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2026[ to top ]

Evaluating the Efficiency and Effectiveness of Learned Sparse Retrieval with the lsr_benchmark.Fröbe, Maik; Schlatt, Ferdinand; Rulli, Cosimo; Hagen, Tim; Merker, Jan Heinrich; Hendriksen, Gijs; Lassance, Carlos; Nardini, Franco Maria; Venturini, Rossano; Potthast, Martin. In Advances in Information Retrieval. 48th European Conference on IR Research (ECIR 2026), of Lecture Notes in Computer Science. Springer Nature, Cham, Switzerland, 2026.
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The Rise of Agentic AI – Implications for Digital Platforms from a Provider Perspective.Grauer, Teresa; Sonnabend, David; Reinhard, Philipp; Li, Mahei Manhai. In Forum Dienstleistungsmanagement 2026. Springer Verlag, 2026.
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Smart Public Displays für Haltestellen öffentlicher Verkehrsmittel: Gestaltungskonzept und prototypische Umsetzung.Beckers, L.; Wehr, F.; Schmidt, L. In Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte, H. Proff (ed.). Springer Gabler, Wiesbaden, 2026.
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Erscheinungsdatum: 10.08.2026
Impact of traffic dynamics on network management. Technical Report (PhD dissertation), . Mehner, Stefan. PhD dissertation. Universität Kassel, 2026.
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Communal Weaving for a Carrier Bag Practice of Computing.Bläsing, Lisa Marie; Horn, Viktoria; Klumbyte, Goda; Lackner, Konstantin; Stöter, Lea; Draude, Claude. In Adjunct Proceedings of the 14th Nordic Conference on Human-Computer Interaction, of NordiCHI ’26 Adjunct, pp. 1–3. ACM, 2026.
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The impact of digital platform introduction on business models in SMEs—The interplay of efficiency and innovation orientation.Hönigsberg, Sarah; Li, Mahei Manhai; Korneeva, Ekaterina; Wache, Hendrik; Dinter, Barbara. In Journal of Strategic Information Systems (JSIS), 35(2). 2026.
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This study examines how digital platform introduction drives business model change in small- and medium-sized enterprises (SMEs). Drawing on a case study of four textile firms, we analyze three phases of platform introduction: pre-platform, engagement, and post-platform launch. The findings reveal a dynamic platform orientation, understood as a cumulative and capability-contingent pattern of SMEs’ engagement with the platform over time. All firms initially adopt an efficiency-focused orientation as a resource-conserving entry logic. However, only those that embed the platform deeply enough to enhance their digital, agile, and network capabilities develop episodic innovation-oriented engagement, which may become dominant and enable more transformative business model change. Others remain primarily efficiency-oriented, achieving only incremental gains. The study demonstrates that pre-existing organizational capabilities shape how the platform orientation unfolds and that improvements in these capabilities determine whether an innovation orientation becomes viable. This study theorizes dynamic platform orientation as the mechanism explaining why similar SMEs participating in the same joint digital platform introduction experience divergent business model outcomes. This mechanism advances research on SME digital transformation and clarifies how tightly coupled SMEs can leverage digital platforms for business model change.
Auto-Judge: A Cross-Task Benchmark for Comparing LLM Judges for Citation-Grounded RAG Systems.Farzi, Naghmeh; Hagen, Tim; Yang, Eugene; Fröbe, Maik; Pradeep, Ronak; Rahmani, Hossein A.; Wang, Xi; Zendel, Oleg; Potthast, Martin; Dietz, Laura. In Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026, A. Moffat, F. Scholer, H. Bast, M. Najork, M. Zhang (eds.), pp. 3159–3166. ACM, 2026.
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An Open SERP Mining Infrastructure for the Archive Query Log.Merker, Jan Heinrich; Ruth, Simon; Scells, Harrisen; Potthast, Martin. In Advances in Information Retrieval. 48th European Conference on IR Research (ECIR 2026), Vol. 16486 of Lecture Notes in Computer Science, R. Campos, A. Jatowt, Y. Lan, M. Aliannejadi, C. Bauer, S. MacAvaney, A. Anand, Z. Ren, S. Verberne, N. Bai, M. Mansoury (eds.), pp. 561–577. Springer Nature, Cham, Switzerland, 2026.
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From ‘Teilnahme’ to ‘Teilhabe’: Rethinking Participation in Equity-Oriented Computer Science Measures.Bläsing, Lisa Marie; Draude, Claude. Gesellschaft für Informatik e.V., 2026.
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This paper is motivated by a common problem in German equity measures designed to foster women’s participation in computer science. Initiatives aimed at diversifying the field often rely on workshops in which the target groups take part in pre-defined activities but are not included in defining the scope of the problem or have a say in designing the measures themselves. In this paper, we use our own role in evaluating equity measures within a research project that offers digital fabrication workshops for young women as an example. We work with the distinction between Teilnahme (taking part) and Teilhabe (participation), arguing that equity measures often do not draw on a strong understanding of participation and empowerment. To counter this, and to “stay with the trouble” (Haraway), we propose a small methodological shift: embedding participatory design methods into the evaluation phase in order to reclaim agency for participants and to transform assessment from a metric of success into a site of co-creation. We also find that this problem is not exclusive to equity measures. Hence the shift could be useful for other domains.
The Wireless Sausage: Ahle Wurst facilitated by AI.König, Immanuel; Koch, Katharina; David, Klaus. In Tagungsband 30. VDE ITG Fachtagung. IEEE, 2026.
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Poster: RADAR: Interactive Exploration of 27 Billion PSKReporter Amateur Radio Reception Reports.Guthardt, Till; Alhamwy, Yasin; Hohlfeld, Oliver. In ACM Internet Measurement Conference (IMC). 2026.
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NAVIGATING THE LANDSCAPE OF IT OPERATING MODELS OR “HOW IT WORKS.”. Grauer, Teresa; Li, Mahei Manhai. In European Conference on Information Systems (ECIS). Milano, Italy, 2026.
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In today’s fast-paced business environment, IT Operating Models (ITOMs), invisible frameworks that define how the IT function works, are emerging as a critical, overlooked factor in determining an organization’s ability to innovate and compete. Organizations struggle to unlock strategic value due to misalignments in their ITOMs. The business-IT alignment literature demonstrates that strategic fit enhances performance but offers limited guidance on how alignment is operationalized in practice. Against this backdrop, this study presents a multi-layer ITOM taxonomy including 16 dimensions and 60 characteristics. Developed through interviews with C-level executives, our taxonomy reveals how organizations structure their IT and translates strategic alignment into operational reality. Our analysis identifies two archetypes: tech-forward organizations, where IT serves as a strategic driver for innovation, and less tech-forward, where IT remains a support function. The research advances theoretical understanding of ITOM design and offers practical guidance for CIOs aiming to harness the potential of IT.
Humans, LLMs, and Measures Do Not Align in Attributed Information Retrieval.Gienapp, Lukas; Lang, Jenny; Potthast, Martin; Scells, Harrisen. In 49th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2026). ACM, 2026.
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Künstliche Intelligenz – KI VO und Datenrecht.Böning, F.; Schindler, S. In Europäisches Datenrecht. Praxishandbuch, C. Geminn, P. C. Johannes (eds.), pp. 515–562. Baden-Baden, 2026.
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Do human trust models transfer to AI? a necessary condition analysis of interpersonal trust antecedents in large language model-based coaching.Meywirth, Sophia; Janson, Andreas; Söllner, Matthias. In Behaviour & Information Technology (BIT), online first, pp. 1–19. 2026.
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As large language models (LLMs) increasingly serve as a technology basis for conversational health behaviour interventions, understanding how users evaluate and respond to these systems becomes critical for their acceptance. When LLM-based coaches are anthropomorphically designed – e.g. through human names, avatars, and messaging interfaces – they may trigger interpersonal trust expectations traditionally reserved for human relationships. This study investigates whether and to what extent the interpersonal trust antecedents of ability, benevolence, and integrity influence trust-related user responses in LLM-based health coaching for fitness and nutrition. Using a vignette-based survey design and combining partial least-squares structural equation modelling (PLS-SEM) with necessary condition analysis (NCA), we identify which antecedents are essential for perceived usefulness and intention to adopt. Results show that integrity is a necessary condition for both outcomes, with a medium to large effect, and that ability significantly influences perceived usefulness but is not necessary. Benevolence, however, was found to be neither a necessary nor a significant predictor in this context. These findings offer theoretical insights into the selective transfer of interpersonal trustworthiness beliefs to AI and provide practical guidance for the design of trustworthy anthropomorphic coaching systems.
When Trust Breaks: A Framework for Analyzing and Understanding Trust Violation and Repair in Sociotechnical Systems.Meywirth, Sophia; Janson, Andreas; Söllner, Matthias. In Thirty-Fourth European Conference on Information Systems (ECIS 2026). Milan, Italy, 2026.
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Trust violations in sociotechnical systems are becoming increasingly visible as AI systems take on advisory and decision-making roles in everyday life. When these systems fail, users must interpret what went wrong and decide whether to continue relying on them. Yet IS research has largely focused on trust formation, leaving the processes through which trust is broken, and potentially repaired, undertheorized. Meanwhile, adjacent fields have produced fragmented insights into trust violations and the mechanisms used to repair them. This paper presents a systematic literature synthesis of 62 studies to understand how trust violations and repair are conceptualized when technology plays a meaningful role. We identify four core stages that structure trust breakdown and recovery: the violation incident, the trustor sensemaking, the violator reaction, and the recalibrated trust outcome. We consolidate these insights into a process-oriented framework and guiding questions, outlining implications for human-AI collaboration and future IS research.
Agentic AI: From Autonomous Agents to Enterprise Agentic AI Systems.Li, Mahei Manhai Li; Reinhard, Philipp; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE). 2026.
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Making the default more legitimate – the role of autonomy and transparency for digital privacy nudges.Janson, Andreas; Barev, Torben Jan. In Information Technology & People, 39(1), pp. 428–455. 2026.
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Purpose This paper examines the concept of digital privacy nudging, a promising approach from behavioral economics that uses subtle cues to influence people’s decisions online. We research the concepts of autonomy and transparency for privacy nudging in digital networking systems for the context of digital work. Design/methodology/approach The paper draws on the literature on digital privacy nudging to develop and test a theoretical model that takes into account legitimate nudge designs, which are those that ensure autonomy and transparency. We utilize a fully randomized between-subjects online experiment with 208 participants to test the effects of different nudge designs on decision outcomes and perceptions. We use a structural equation modeling approach for evaluating the theoretical model. Findings The paper presents two major findings. First, we conceptualize the concept of legitimate nudging and implement the concept empirically with nudges that promote autonomy and transparency in the context of defaults as digital privacy nudges. Second, our findings show that autonomy-promoting nudges significantly lower reactance that is significantly associated with a lower acceptance of digital nudging. Finally, we provide evidence that the acceptance of digital nudging is also crucial for trusting digital systems where nudges are oftentimes embedded in. Research limitations/implications The paper contributes to the literature on digital nudging by providing insights into more legitimate nudge designs through providing autonomy and transparency. Our research provides in this regard implications for nudge effectiveness and the overall debate concerning ethics in digital nudging. We also offer practical implications for organizations and information systems designers who want to use nudges in a responsible way. Originality/value This paper is one of the first to empirically investigate the role of legitimacy in digital nudging and to propose a framework for designing and evaluating legitimate nudges. It also provides insights into the perceptional downstream consequences of legitimate nudging.
Do individuals prefer stricter supply chain laws? Empirical evidence from Germany.Engler, D.; Gleue, M.; Gutsche, G.; Hornung, G.; Möller, S.; Schomberg, S.; Ziegler, A. In European Journal of Political Economy, 93(102829). 2026.
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Hierarchical Background Knowledge in FCA via Must-Link-Before Constraints.Gutekunst, Klara M.; Dürrschnabel, Dominik; Schneider, Stefan; Potthast, Martin. In The Third International Joint Conference on Conceptual Knowledge Structures (CONCEPTS). Springer Nature, Montpellier, 2026.
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Towards a Multi-Agent LLM-Based Tutoring Tool for Mathematical Argumentation Skills.Koulani, Huda; Marchionne, Lucia; Schmidtpott-Schulz, Hendrikje; Eichler, Andreas; Bley, Andreas; Söllner, Matthias. In Design for Better Futures: Beyond the Science of the Artificial. Prototypes and Research-in-Progress, Vol. 16607 of Lecture Notes in Computer Science, pp. 68–79. Springer Nature Switzerland, Cham, 2026.
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Mathematical argumentation is a core competence that integrates mathematical reasoning with broader critical thinking skills, enabling students to construct coherent and logically structured arguments to evaluate mathematical claims. This skill is essential for undergraduate students across disciplines such as information systems, mathematics, and computer science—yet many struggle to develop it. Recent advances in Large Language Models (LLMs) and multi-agent systems offer a promising opportunity to address these challenges by supporting students in refining their mathematical argumentation within a tutorial setting. In this Research-in-Progress paper, we adopt a Design Science Research approach to generate design knowledge for an LLM-based tutoring tool aimed at fostering students’ argumentation skills. Drawing on user requirements and meta-requirements derived from user interviews and theoretical foundations, we derive four design principles and propose a prototype of a multi-agent LLM-based tutoring tool. The system delivers formative feedback on students’ proofs and provides tutorial guidance through step-by-step explanations, grounded in theories of formative feedback and tutorial guidance.
Europäisches Datenrecht. Praxishandbuch. Geminn, C.; Johannes, P. C. Nomos Verlagsgesellschaft, Baden-Baden, 2026.
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Fachliche und überfachliche Kompetenzen durch soziotechnisches Design von Systemen hybrider Intelligenz flexibel und individuell fördern: Projektergebnisse des Vorhabens Komp-HI im Rahmen der Richtlinie zur Bund-Länder-Initiative zur Förderung der Künstlichen Intelligenz in der Hochschulbildung. Hänel, Martin; Weber, Florian K. F.; Link, Hendrik; Tolzin, Antonia; Knoth, Nils; Schulz, J.; Körner, A.; Janson, Andreas; Ebersbach, Mirjam; Hornung, Gerrit; Hetzler, H.; Rummer, Ralf; Leimeister, Jan Marco; Söllner, Matthias. Technische Informationsbibliothek (TIB), Hannover, 2026.
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SpectraCCC: Passive Classification of TCP Congestion-Control Algorithms.Krause, Jonas; Franke, Max; Hohlfeld, Oliver; Schmid, Stefan. In 2026 IEEE 12th International Conference on Network Softwarization (NetSoft), P. IEEE, I. of Electrical, E. Engineers (eds.), pp. 243–248. IEEE, 2026.
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Learning Topology Actions for Power Grid Control: A Graph-Based Soft-Label Imitation Learning Approach.Hassouna, Mohamed; Holzhüter, Clara; Lehna, Malte; de Jong, Matthijs; Viebahn, Jan; Sick, Bernhard; Scholz, Christoph. In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD), pp. 129–146. Springer, 2026.
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The rising proportion of renewable energy in the electricity mix introduces significant operational challenges for power grid operators. Effective power grid management demands adaptive decision-making strategies capable of handling dynamic conditions. With the increase in complexity, more and more Deep Learning (DL) approaches have been proposed to find suitable grid topologies for congestion management. In this work, we contribute to this research by introducing a novel Imitation Learning (IL) approach that leverages soft labels derived from simulated topological action outcomes, thereby capturing multiple viable actions per state. Unlike traditional IL methods that rely on hard labels to enforce a single optimal action, our method constructs soft labels that capture the effectiveness of actions that prove suitable in resolving grid congestion. To further enhance decision-making, we integrate Graph Neural Networks (GNNs) to encode the structural properties of power grids, ensuring that the topology-aware representations contribute to better agent performance. Our approach significantly outperforms its hard-label counterparts as well as state-of-the-art Deep Reinforcement Learning (DRL) baseline agents. Most notably, it achieves a 17% better performance compared to the greedy expert agent from which the imitation targets were derived.
Graph reinforcement learning for power grids: A comprehensive survey.Hassouna, Mohamed; Holzhüter, Clara; Lytaev, Pawel; Thomas, Josephine; Sick, Bernhard; Scholz, Christoph. In Energy and AI, 23, p. 100671. Elsevier, 2026.
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The increasing share of renewable energy and distributed electricity generation requires the development of deep learning approaches to address the lack of flexibility inherent in traditional power grid methods. In this context, Graph Neural Networks are a promising solution due to their ability to learn from graph-structured data. Combined with Reinforcement Learning, they can be used as control approaches to determine remedial actions. This review analyzes how Graph Reinforcement Learning can improve representation learning and decision-making in power grid applications, particularly transmission and distribution grids. We analyze the reviewed approaches in terms of the graph structure, the Graph Neural Network architecture, and the Reinforcement Learning approach. Although Graph Reinforcement Learning has demonstrated adaptability to unpredictable events and noisy data, its current stage is primarily proof-of-concept, and it is not yet deployable to real-world applications. We highlight the open challenges and limitations for real-world applications..
From ‘ChatGPT et al.’ to generative artificial intelligence (GenAI) in peer review: Safeguarding trust while modernising scholarly publishing.Leimeister, Jan Marco; Aaltonen, Aleksi; Currie, Wendy; Schlagwein, Daniel. In Journal of Information Technology (JIT), 41(2). 2026.
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Generative Artificial Intelligence (GenAI) is rapidly entering academic work, including the peer review process. We examine the implications of GenAI for the peer review process – including its use by reviewers, editors, and authors (e.g. for pre-submission self-review or for operationalising review feedback during revision) – and articulates the position of the Journal of Information Technology (JIT). We advance two foundational premises: first, peer review should be seen as a creative process, sometimes even becoming a co-creation with the authors and editors, rather than mechanistic quality control; second, GenAI may augment peer review but should not replace or outsource scholarly judgement and insight. Drawing on recent state-of-the-art analyses of GenAI in peer reviewing, we identify four requirements for ethical use – confidentiality, accountability, bias mitigation, and transparency – and discuss how these principles apply across the reviewing process. We outline where GenAI can provide legitimate support, such as summarisation, language improvement, compliance checking, and workflow management, while emphasising that evaluative judgement must remain with human reviewers and editors. GenAI must not become a shortcut for efficiently producing good papers on average, while steering us away from papers that are more demanding to review but at the same time offering potentially much more impactful contributions. We articulate JIT’s editorial stance for AI-assisted peer review and propose role-specific guidance for authors, reviewers and editors. We also outline a research agenda for studying the impact of GenAI on review quality, timeliness, fairness and trust. Overall, we argue that peer review should evolve through responsible AI augmentation while preserving human-centred governance and the accountability that underpins scholarly evaluation.
Datenschutz- und Digitalpolitik in krisenhaften Zeiten – 10. Interdisziplinäre Jahreskonferenz der Plattform Privatheit, Konferenzbericht, Berlin 2025.Karaboga, M.; Nebel, M.; Schmied, L.; Schörnig, A.; Ferrarese, B. In Zeitschrift für Technikfolgenabschätzung in Theorie und Praxis (TATuP), pp. 72–73. 2026.
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Design and Evaluation of an Adaptive Reading Support System for Comprehension.Hänel, Martin; Mwaita, Kevin Fred; Wambsganss, Thiemo; Söllner, Matthias. In Thirty-Fourth European Conference on Information Systems (ECIS 2026). Milan, Italy, 2026.
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Reading complex informational text is essential for comprehending global scientific knowledge, yet many nonnative readers from practice-oriented pathways struggle to comprehend such materials and require adaptive support that existing systems do not provide. However, past research lacks prescriptive design knowledge on how to effectively design such support systems. Hence, we present results from our design science research endeavor to design and evaluate an adaptive reading support system grounded in comprehension theory. We built on design principles and instantiated them as adaptive hints and support functions typically scattered across separate tools. We evaluated the systems in an online experiment with 84 participants across three conditions: control, conversational interface, and canvas interface. The results show that a conversational interface grounded in ICAP improves comprehension, while canvas-based instantiations of prior design principles require careful design to manage their higher interaction complexity, illustrating how system design grounded in linguistic theory can support the processing of complex texts. The study contributes design knowledge for effective comprehension support systems.
PaperMate: A Prototype for Supporting Comprehension of Scientific Texts for Non Native Academic Readers.Hänel, Martin; Mwaita, Kevin Fred; Wambsganss, Thiemo; Söllner, Matthias. In Design for Better Futures: Beyond the Science of the Artificial. Prototypes and Research-in-Progress, Vol. 16607 of Lecture Notes in Computer Science, pp. 337–344. Springer Nature Switzerland, Cham, 2026.
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Reading comprehension is essential for accessing scientific knowledge, yet many students, especially non native readers, struggle to understand complex academic texts. Comprehension theory shows that understanding requires the coordinated interaction of multiple subskills and the construction of a coherent situation model. Existing reading support systems typically address only isolated aspects such as summarization or simplification, resulting in superficial understanding. We present PaperMate, a canvas based reading support system designed to support situation model construction. Grounded in the Active Reader View, the artifact integrates simplification, structural guidance, essentialization, and contextual clarification within a unified and user controlled interface. This enables readers to flexibly combine support based on individual needs. The artifact was developed through multiple iterative design cycles including proof of concept, proof of value, laboratory studies, and field tests, and is continuously refined. The work demonstrates how holistic reading support can be operationalized in a concrete artifact and contributes to theory grounded design of reading support systems.
Speculative AI Futures Workshop.Lackner, Konstantin; Stöter, Lea; Draude, Claude. In Adjunct Proceedings of the 14th Nordic Conference on Human-Computer Interaction, of NordiCHI ’26 Adjunct, pp. 1–4. ACM, 2026.
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LARS: Keeping Local Traffic Local with Latency-Aware Route Servers at IXPs.de Andres Hernandez, David; Alhamwy, Yasin; Wagner, Daniel; Stephan, Maximilian; Wichtlhuber, Matthias; Hohlfeld, Oliver. In Proceedings of the ACM SIGCOMM 2026 Conference, of SIGCOMM ’26, pp. 1009–1023. ACM, 2026.
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Poster: Decoupling Lighthouse Gathering and Auditing to Increase Web Crawl Throughput and Analysis Flexibility.Kunz, Adrian; Kawollek, Lukas; Löser, Simon; Hohlfeld, Oliver. In ACM Internet Measurement Conference (IMC). 2026.
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Orchestrating Scaffolding AI Agents: Design Principles for Mechanism-Specific Learner Support.Kozachek, Diana; Janson, Andreas. In Design Science Research in Information Systems and Technology (DESRIST), pp. 191–208. Springer, Münster, Germany, 2026.
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AI agents are increasingly adopted in higher education, yet current systems handle requests uniformly, promoting cognitive offloading over sustained skill development. With the rise of orchestrated multi-agent systems, learning goals can be targeted by specialized AI agents that each address a distinct scaffolding mechanism: conceptual, procedural, strategic, or metacognitive. This study follows a Design Science Research approach to derive design requirements from 32 student interviews, iteratively refine a prototype with 22 IS experts, 6 educators, and 34 students, and computationally analyze scaffold effectiveness. We contribute three design principles: (1) multi-agent coordination through a lead orchestrator that delegates to mechanism-specific sub-agents, (2) adaptive learner profiling that enables cross-session scaffolding fading, and (3) continuous institutional knowledge integration grounding scaffolds in verified course materials. Our effectiveness analysis reveals that delivery order predicted learning behavior, positioning orchestration as a key design concern for AI-assisted educational systems.
Daten im Recht (65-91), Elektronische Identifizierung (563-574), Elektronische Vertrauensdienste (575-589), Forschung mit und an Daten (717-736).Johannes, P. C. In Europäisches Datenrecht. Praxishandbuch, C. Geminn, P. C. Johannes (eds.). Baden-Baden, 2026.
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Resilienz als Ergänzung von IT-Sicherheit. Zum semantischen und normativen Mehrwert des Resilienzkonzepts im IT-Recht.Hornung, G.; Pfeiffer, L.; Zurawski, P. In Zeitschrift für Digitalisierung und Recht, pp. 75–102. 2026.
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A Fresh Look at Website Complexity.Kunz, Adrian; Kawollek, Lukas; Alhamwy, Yasin; Hohlfeld, Oliver. In ACM Internet Measurement Conference (IMC). 2026.
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Investigating Counterclaims in Causality Extraction from Text.Hagen, Tim; Deckers, Niklas; Wolter, Felix; Scells, Harrisen; Potthast, Martin. In CoRR, abs/2510.08224. 2026.
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Retrieval-Augmented Generation -- The Future of Search? (Dagstuhl Seminar 25391).Hagen, Matthias; Mothe, Josiane; Muresan, Smaranda; Potthast, Martin; Zhang, Min; Stein, Benno; Heineking, Sebastian. In Dagstuhl Reports, 15(9), M. Hagen; J. Mothe; S. Muresan; M. Potthast; M. Zhang; B. Stein; S. Heineking (eds.), pp. 71–159. Schloss Dagstuhl-Leibniz-Zentrum für Informatik, Dagstuhl, Germany, 2026.
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Detecting RAG Advertisements Across Advertising Styles.Heineking, Sebastian; Pertsch, Wilhelm; Zelch, Ines; Bevendorff, Janek; Stein, Benno; Hagen, Matthias; Potthast, Martin. In CoRR, abs/2603.04925. 2026.
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Trigger Warnings are Grounded in a Shared Vocabulary: A Corpus Analysis with User-Generated Labels.Heineking, Sebastian; Wiegmann, Matti; Wolska, Magdalena; Stein, Benno; Potthast, Martin. In Proceedings of the Fifteenth Language Resources and Evaluation Conference (LREC 2026), S. Piperidis, N. Bel, H. van den Heuvel, N. Ide, S. Krek, A. Toral (eds.), pp. 7106–7125. European Language Resources Association (ELRA), Palma, Mallorca, Spain, 2026.
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Beyond Adoption: A Dynamic Model Of Generative AI User Archetypes In Information System Development Teams.Bruhin, Olivia; Bauer-Hänsel, Ingrid; Ebel, Philipp; Leimeister, Jan Marco. In European Conference on Information Systems (ECIS). Milan, Italy, 2026.
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Generative Artificial Intelligence (GenAI) is rapidly transforming Information Systems Development (ISD), yet traditional binary adoption models fail to capture its complex, open-ended nature. To understand how ISD professionals integrate these tools, we conducted an exploratory qualitative case study at a telecommunications and software company, applying the Job Characteristics Model (JCM) and the social perspective on ISD. Our analysis identifies a framework of dynamic GenAI user archetypes driven by perceived value and depth of engagement: the Disengaged Sceptic, Cautious User, Frustrated Strategist, and Productive Optimiser. With our study, we contribute to the ISD community with an extended theoretical perspective on post-adoptive GenAI use. Additionally, we equip ISD professionals with guidelines to scale GenAI sustainably within ISD teams through targeted, non-linear adoption.
The Good into the Pot, the Bad into the Crop: A Deep Learning Approach to Control Crowd Labeling.Bretschneider, Ulrich; Hupe, Anna; Herde, Marek; Oeste-Reiß, Sarah; Sick, Bernhard. In European Conference on Information Systems (ECIS). Milan, Italy, 2026.
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For labeling data, until today, Crowd Labeling is the mechanism of choice. In the practice of Crowd Labeling, a bunch of various instruments is used, which allow for controlling the crowd, respectively its work results. However, these instruments have in common that they can be executed only before or after a labelling campaign. This causes large delays and therefore not only needs a lot of additional time but also raises extra costs and -effort. In our design science research, we developed and evaluated a Deep Learning-based, algorithmic approach consisting of four different probabilistic-mathematical models. Our new approach enables an assessment of the crowd’s labeling work during an ongoing crowdwork campaign. Besides this benefit, our approach produces excellent rates of accuracy, when it comes to detecting erroneous annotation rates of the crowd.
Grade the Learning, Not the Implementation: AI-Aware Assessment in Internet Measurements Education.Hohlfeld, Oliver. In ACM SIGCOMM Networking Education Workshop. 2026.
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Datenaltruismus.Lorenz, L. In Europäisches Datenrecht. Praxishandbuch, C. Geminn, P. C. Johannes (eds.), pp. 403–451. Baden-Baden, 2026.
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SignAlign: A Smartphone-Based Visual Positioning System for Enhanced Bicycle Safety.Busch, L.; Mathuseck, L.; Götz, J.; Heinisch, J. S.; David, K. In IEEE International Conference on Pervasive Computing and Communications (PerCom), pp. 1–10. IEEE, 2026.
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Learner Models: The Gap between Educational Opportunities vs. Data Protection Challenges.Böck, F.; Link, H.; Landes, D. In IARIA journals, pp. 31–52. 2026.
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Artifact: SignAlign - A Smartphone-Based Visual Positioning System for Enhanced Bicycle Safety.Busch, L.; Mathuseck, L.; Götz, J.; David, K.; Heinisch, J. S. In IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), pp. 1–2. IEEE, 2026.
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Overview of Touché 2026: Argumentation Systems.Kiesel, Johannes; Feger, Marc; Hagen, Tim; Heineking, Sebastian; Heinrich, Maximilian; Fröbe, Maik; Boland, Katarina; Pertsch, Wilhelm; Romberg, Julia; Zelch, Ines; Dietze, Stefan; Hagen, Matthias; Potthast, Martin; Stein, Benno. In Advances in Information Retrieval. 48th European Conference on IR Research (ECIR 2026), Vol. 16485 of Lecture Notes in Computer Science, R. Campos, A. Jatowt, Y. Lan, M. Aliannejadi, C. Bauer, S. MacAvaney, Z. Ren, S. Verberne, N. Bai, M. Mansoury (eds.), pp. 277–286. Springer Nature, Cham, Switzerland, 2026.
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When the Lights Go Out: Internet Resilience During the 2025 Iberian Power Outage.Hohlfeld, Oliver; Alhamwy, Yasin; Striffler, Tobias; Wagner, Daniel; Wichtlhuber, Matthias. In ACM SIGCOMM Computer Communication Review, 56(1), pp. 3–10. Association for Computing Machinery (ACM), 2026.
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POSTER: A Communication-Centric Multi-Agent System for Persistent UAV Formation Control.Alhamwy, Yasin; Bakar, Hozifah; Hohlfeld, Oliver. In SIGCOMM, E. Keller, S. Ha, L. Vanbever, T. Benson (eds.), pp. 2207–2209. ACM, 2026.
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Cognitive and motivational factors of argument evaluation.Berkle, Yvonne; Wambsganss, Thiemo; Janson, Andreas; Leimeister, Jan Marco; Leuchter, Miriam. In Trends in Neuroscience and Education (Trends Neurosci. Educ.), 44(100294). 2026.
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Argument evaluation, including recognizing argument structures and fallacies, is crucial for academic success, yet many university students struggle with these abilities. Drawing on the motivational model of integrative processing and expectancy-value theory, this study examined how distal motivational factors (topic involvement, need to evaluate, academic self-concept in argumentation) relate to proximal appraisals (expectancy of success, task value, emotional cost) and, in turn, to argument evaluation.
DEMO: Lost in Space? Not Your PLC: High-Availability Industrial Control over Satellite Computing Networks.Mitsakis, Nikolaos; Breiting, Yannic; Guimarães, Carlos Eduardo Magalhaes; Zeiger, Florian; Blenk, Andreas. In SIGCOMM, E. Keller, S. Ha, L. Vanbever, T. Benson (eds.), pp. 2204–2206. ACM, 2026.
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When the Crowd Doesn’t Show Up: How Measurement Vantage Points Reveal (or Hide) Traffic Peaks During UEFA EURO 2024.Alhamwy, Yasin; Hohlfeld, Oliver. In Proceedings of the ACM SIGCOMM 2026 Conference, of SIGCOMM ’26, pp. 2159–2161. ACM, 2026.
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Hybrid vPLC Control with eBPF: Offloading Latency-Critical Logic to the Linux Kernel.Mitsakis, Nikolaos; Schöpf, Nico; Blenk, Andreas; Hohlfeld, Oliver. In IEEE International Conference on Industrial Informatics (INDIN). 2026.
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OTI-Bench: Verifying Real-Time Flows in IT/OT Converged Networks with eBPF.Mitsakis, Nikolaos; Breiting, Yannic; Eichholz, Matthias; Eppler, Manuel; Albrecht, Harald; Hohlfeld, Oliver; Blenk, Andreas. In IEEE/IFIP Network Operations and Management Symposiu. 2026.
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Topic-Specific Classifiers are Better Relevance Judges than Prompted LLMs.Gienapp, Lukas; Potthast, Martin; Yates, Andrew; Scells, Harrisen; Yang, Eugene. In 49th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2026). ACM, 2026.
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A Large-Scale, Cross-Disciplinary Corpus of Systematic Reviews.Achkar, Pierre; Gollub, Tim; Simons, Arno; Scells, Harrisen; Potthast, Martin. In CoRR, abs/2604.22864. 2026.
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Shifting Stories of Human-Centered Computing Research: Exploring Narratives Through the Lens of Le Guin’s The Carrier Bag Theory of Fiction.Horn, Viktoria; Stöter, Lea; Bläsing, Lisa Marie; Klumbyte, Goda; Lackner, Konstantin; Draude, Claude. In Adjunct Proceedings of the 14th Nordic Conference on Human-Computer Interaction, of NordiCHI ’26 Adjunct, pp. 1–4. ACM, 2026.
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Representation Fidelity:Auditing Algorithmic Decisions About Humans Using Self-Descriptions.Elstner, Theresa; Potthast, Martin. In CoRR, 2603.05136. 2026.
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A Pipeline to Bootstrap the Evaluation of Retrieval-Augmented Generation for the Automation of Systematic Reviews in Computer Science.Achkar, Pierre; Gollub, Tim; Simons, Arno; Scells, Harrisen; Fröbe, Maik; Potthast, Martin. In 1st Workshop on Multilingual Report Generation via Retrieval Augmented Generation (RAG4Reports 2026) at ACL, E. Yang, D. Lawrie, S. MacAvaney, J. Mayfield, L. Soldaini, A. Yates (eds.), pp. 65–70. Association for Computational Linguistics, San Diego, CA, USA, 2026.
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The Ladder of Data Citizen Participation in Evaluating News Recommender Systems: An Empirical Exploration through an Interdisciplinary Participatory Design Workshop.Horn, Viktoria; Lackner, Konstantin; Uhlmann, Markus; Draude, Claude. In Proceedings of the 19th Participatory Design Conference 2026, Vol. 2: Exploratory Papers and Doctoral Colloquium, of PDC 2026 Vol. 2, pp. 116–124. ACM, 2026.
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Drawing on a participatory design workshop with eight researchers from five academic disciplines, we use the Ladder of Data Citizen Participation as a heuristic to evaluate a recommender system schematic. We identify disciplinary differences in how participation is conceptualised, ranging from representation and technical transparency to democratic self-determination. We also reveal diverging temporal notions of when participation occurs. Reflexive thematic analysis of workshop data highlights tensions between participation and usability, market pressures, and normative design values. We find that current recommender system logic, especially with AI-driven stochastic systems, challenges conventional participatory frameworks. The Ladder proves effective for eliciting epistemological differences but less suitable for guiding participatory system design. Our findings suggest the need for interdisciplinary alignment on participation concepts as a prerequisite for designing recommender systems that serve the public good.
UP2DATE: Shared Task on Systematic Review Updates.Achkar, Pierre; Gollub, Tim; Potthast, Martin; Eickhoff, Carsten; Scells, Harrisen. In 2nd International Workshop on Scholarly Information Access (SCOLIA 2026) at ECIR, Vol. 4187 of CEUR Workshop Proceedings, I. Frommholz, C. K. Kreutz, P. Mayr, G. Cabanac (eds.), pp. 78–83. CEUR-WS.org, Delft, The Netherlands, 2026.
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Datenrechte.Kohpeiß, M.; Seyda, L. In Europäisches Datenrecht. Praxishandbuch, C. Geminn, P. C. Johannes (eds.), pp. 687–716. Baden-Baden, 2026.
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A Collection of Systematic Reviews in Computer Science.Achkar, Pierre; Gollub, Tim; Potthast, Martin. In 2nd International Workshop on Scholarly Information Access (SCOLIA 2026) at ECIR, Vol. 4187 of CEUR Workshop Proceedings, I. Frommholz, C. K. Kreutz, P. Mayr, G. Cabanac (eds.), pp. 71–77. CEUR-WS.org, Delft, The Netherlands, 2026.
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2025[ to top ]

Support for a Complex Assembly Task Through Augmented Reality Instructions With See-Through Data Glasses - Comparison With Smartphone and Paper Instructions.Mack, D.; Schmidt, L. In e-learning and education, (16), pp. 1–18. 2025.
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The study presented here deals with the assembly of an emergency door release handle for unlocking the doors of railway vehicles at a realistic workstation with different instructions. For this purpose, a new AR instruction with see-through data glasses was developed and compared with smartphone-based AR instructions and paper instructions. The paper instructions represent the status quo of the assembly process. The implementation with see-through data glasses is technically more complex but has the advantage over the previously analysed smartphone that the hands are free for assembly. The hypotheses investigated are that the type of instruction has an influence on the assembly time, the number of errors, the usability and the strain on the assembler. Each type of instruction was studied with eight subjects and five assembly runs in a between-subjects design. There was no significant difference in total assembly time between the see-through data glasses and the smartphone. A comparable number of errors with lower strain makes the see-through glasses still interesting for knowledge transfer.
Integration realer Werkzeuge in eine VR-Trainingssoftware für komplexe manuelle Montageprozesse: Vergleichsstudie mit und ohne Haptik.Mack, D.; Schmidt, L. In DELFI 2025: 23. Fachtagung Bildungstechnologien (Freiberg 2025), of Lecture Notes in Informatics (LNI) - Proceedings, V. Köppen, S. Strickroth (eds.), pp. 57–70 *** Best Paper Award ***. Gesellschaft für Informatik, Bonn, 2025.
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Die hier vorgestellte Studie betrachtet das Training der Montage eines Notgriffs zur Türentriegelung von Schienenfahrzeugen an einem originalgetreuen Arbeitsplatz mit verschiedenen Trainingsanwendungen. Dazu wurde eine VR-Trainingsanwendung mit realen Montagevorrichtungen und Werkzeugen neu entwickelt und mit einer VR-Trainingsanwendung ohne solche haptischen Elemente verglichen. Für beide Anwendungen wurde dieselbe Videodatenbrille verwendet. Das Training ermöglicht eine niederschwellige Einarbeitung neuer Mitarbeiter ohne Sprachbarrieren und ohne einen Montagearbeitsplatz in der Produktion zu blockieren. Die untersuchten Hypothesen sind, dass die Art des Trainings einen Einfluss auf die Trainingszeit, die spätere Montagezeit, die Anzahl der Fehler, die Gebrauchstauglichkeit der Anwendung und die Beanspruchung des Montagepersonals während des Trainings hat. Beide Trainings wurden in einem Between-Subject-Design mit jeweils fünfzehn Probanden fünfmal eingesetzt. Anschließend wurden drei reale Montagedurchgänge durchgeführt. Sowohl bei den Trainingszeiten als auch bei den Montagezeiten konnten signifikante Unterschiede zwischen den Trainingsanwendungen festgestellt werden, wobei sich bei der Trainingsanwendung mit Haptik längere Trainings-, aber kürzere reale Montagezeiten zeigten.
UbiComp4VRU: Ubiquitous Computing for Vulnerable Road Users.Heinisch, Judith S.; David, Klaus; Zuo, Si; Salim, Flora; Kegalle, Hiruni. In Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing, pp. 1439–1442. 2025.
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Satzungen als taugliche Rechtsgrundlage für den Einsatz von Learning Analytics in Hochschulen.Hornung, G.; Link, H. In Learning Analytics, Artificial Intelligence und Data Mining in der Hochschulbildung, R. Queckenberg, J. Leschke, M. Persike (eds.), pp. 61–71. 2025.
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Montagetraining in virtueller Realität mit Variation der Unterstützung und Messung physiologischer Parameter.Mack D.; Schmidt, L. In Arbeit 5.0: Menschzentrierte Innovationen für die Zukunft der Arbeit: 71. Kongress der Gesellschaft für Arbeitswissenschaft (Aachen 2025), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 392–397. GfA-Press, Sankt Augustin, 2025.
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Die Einarbeitung von Montagepersonal stellt eine große Herausforderung für Unternehmen dar. Der hohe Einarbeitungsaufwand und die zu erwartende Fluktuation erfordern neue Lösungen. Konventionelle Schulungen sind unflexibel (z. B. bei Sprachbarrieren) und reale Schulungen sind oft erst nach Einrichtung des Arbeitsplatzes möglich. Virtual Reality (VR) bietet die Möglichkeit eines ortsunabhängigen Trainings, bedarf aber weiterer Entwicklung. Eine vorangegangene Studie hat gezeigt, dass ein zu schnelles Durchlaufen von VR-Anwendungen den Trainingseffekt verringert. Adaptive Systeme mit variabler Unterstützung sind daher wünschenswert. Die Messung der Trainingsbeanspruchung ist für die Bewertung solcher Anpassungen relevant. In dieser Arbeit wurde die physiologische Beanspruchung durch VR-Montagetrainings mittels Herzratenvariabilität (HRV) untersucht. Es wurde ein VR-Training zur Montage eines Türnotentriegelungsgriffs entwickelt und in einer Between-Subjects-Studie mit zwei Gruppen (mit/ohne zusätzliche Unterstützung) evaluiert. Während des Trainings wurde die HRV zur Erfassung der Beanspruchung gemessen. Es zeigt sich, dass sich die Durchlaufzeiten signifikant zwischen den beiden Varianten unterscheiden.
A Conceptual Framework for AI-based Decision Systems in Critical Infrastructures.Leyli abadi, Milad; Bessa, Ricardo J.; Viebahn, Jan; Boos, Daniel; Borst, Clark; Castagna, Alberto; Chavarriaga, Ricardo; Hassouna, Mohamed; Lemetayer, Bruno; Leto, Giulia; Marot, Antoine; Meddeb, Maroua; Meyer, Manuel; Schiaffonati, Viola; Schneider, Manuel; Waefler, Toni. In IEEE International Conference on Systems, Man and Cybernetics (SMC), pp. 5799–5806. IEEE, 2025.
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The interaction between humans and AI in safety-critical systems presents a unique set of challenges that remain partially addressed by existing frameworks. These challenges stem from the complex interplay of requirements for transparency, trust, and explainability, coupled with the necessity for robust and safe decision-making. A framework that holistically integrates human and AI capabilities while addressing these concerns is notably required, bridging the critical gaps in designing, deploying, and maintaining safe and effective systems. This paper proposes a holistic conceptual framework for critical infrastructures by adopting an interdisciplinary approach. It integrates traditionally distinct fields such as mathematics, decision theory, computer science, philosophy, psychology, and cognitive engineering and draws on specialized engineering domains, particularly energy, mobility, and aeronautics. Its flexibility is further demonstrated through a case study on power grid management.
Conceptualizing hybrid intelligent service ecosystems.Bartelheimer, Christian; Heinz, Daniel; Hönigsberg, Sarah; Siemon, Dominik; Li, Mahei Manhai; Strohmann, Timo; Poeppelbuss, Jens; Peters, Christoph. In Electronic Markets (EM), 35(63), p. 27. 2025.
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With the proliferation of artifcial intelligence (AI) technologies, the collaboration of human and AI actors in value cocreation processes permeates various application domains. In this conceptual paper, we integrate concepts from human-AI collaboration and service research and present a conceptual framework for hybrid intelligent service ecosystems (HISE). The framework extends the existing conceptualizations of service ecosystems as put forward by the service-dominant logic (S-D logic) by emphasizing how actors deliberately confgure human and artifcial agencies to co-create value via hybrid intelligent service exchange and how this impacts ecosystem formation and evolution. Our conceptualization highlights that value co-creation in HISE is guided and facilitated by shared resources and institutional arrangements, which difer from previous service ecosystems through the emergence of hybrid agency. We demonstrate the applicability of our framework with fve illustrative HISE scenarios and provide fve theoretical propositions. Our fndings extend existing knowledge by theorizing on how to incorporate hybrid intelligence into value co-creation processes. Thereby, we provide a foundation for future interdisciplinary research on human-AI collaboration at the intersection of information systems, human–computer interaction, and service research with S-D logic as a unifying theoretical lens.
A Test Collection for Dataset Retrieval.Kolyada, Nikolay; Stein, Benno; Potthast, Martin. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15576 of Lecture Notes in Computer Science, C. Hauff, C. Macdonal, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 372–380. Springer Nature, Cham, Switzerland, 2025.
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Ranking Generated Answers: On the Agreement of Retrieval Models with Humans on Consumer Health Questions.Heineking, Sebastian; Probst, Jonas; Steinbach, Daniel; Potthast, Martin; Scells, Harrisen. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), C. Hauff, C. Macdonal, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 128–137. Springer Nature, Cham, Switzerland, 2025.
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Individual Rights in the AI Act. The Rights to Lodge a Complaint and to Explanation of the Decision-Making Process in Individual Cases.Hornung, G.; Link, H. In JIPITEC 330, 16(3). 2025.
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crowd-hpo: Realistic Hyperparameter Optimization and Benchmarking for Learning from Crowds with Noisy Labels.Herde, Marek; Lührs, Lukas; Huseljic, Denis; Sick, Bernhard. In Transactions on Machine Learning Research. 2025.
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Crowdworking is a cost-efficient solution for acquiring class labels. Since these labels are subject to noise, various approaches to learning from crowds have been proposed. Typically, these approaches are evaluated using default hyperparameter configurations, which often result in unfair and suboptimal performance, or using hyperparameter configurations tuned via a validation set with ground truth class labels, which represents an often unrealistic scenario. Moreover, both setups can yield different approach rankings, complicating study comparisons. Therefore, we introduce crowd-hpo as a framework for evaluating approaches to learning from crowds, together with criteria for selecting well-performing hyperparameter configurations using only noisy crowd-labeled validation data. Extensive experiments with neural networks demonstrate that these criteria select hyperparameter configurations that improve the learning from crowds approaches' generalization performances, measured on separate test sets with ground truth labels. Hence, incorporating such criteria into experimental studies is essential for enabling fairer and more realistic benchmarking.
Next-generation IS research methods – towards a better understanding of complex and dynamic phenomena ... and generative AI as the elephant in the room.Blohm, Ivo; Miranda, Shaila; Ho, Shuk Ying; Leimeister, Jan Marco. In Journal of Information Technology (JIT), 40(2), pp. 102–121. 2025.
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Emerging phenomena like the increasing volume and variety of available data, machine learning techniques, and, most recently, Generative AI are reshaping our research practices, affording new research methods for testing and developing theory. In this editorial, we discuss our two major observations from running the ‘Next-generation IS Research Methods’ Special Issue: (1) the need for research methods that enhance our understanding of complex and dynamic phenomena and (2) Generative AI as (potential) productivity enhancer. We compile these observations into an organizing framework and discuss possibilities for applying Generative AI in the fields of qualitative, quantitative, and engaged research. We highlight challenges that might occur when applying Generative AI in research and shed light on the changing role of researchers in such settings of human–AI collaboration.
Kapitel „Telekommunikation und digitale Dienste“.Hornung, G.; Schindler, S. In IT-Sicherheitsrecht. Praxishandbuch, Second, , G. Hornung, M. Schallbruch (eds.), pp. 617–670. Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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Machbarkeitsstudie für ein Bundesinstitut für Verbraucherforschung. Abschlussbericht einer vom Bundesministerium für Umwelt, Naturschutz, nukleare Sicherheit und Verbraucherschutz in Auftrag gegebenen „Studie zur Weiterentwicklung der Verbraucherforschung durch Einrichtung eines Bundesinstituts für Verbraucherforschung“. Kenning, Peter; Christian, Kastrop; Lamla, Jörn; Reisch, Lucia. Bundesministerium der Justiz und für Verbraucherschutz, Berlin, 2025.
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Digitale Resonanz – oder: Wie KI Dinge zum Klingen bringt. Anmerkungen zur Politischen Ontologie bei Rosa und Latour.Lamla, Jörn. In Resonanz und Kritik. Perspektiven auf eine Soziologie der Weltbeziehungen, B. Hollstein, J. Oberthür (eds.), pp. 514–522. Suhrkamp, Berlin, 2025.
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SynDEc: A Synthetic Data Ecosystem.Karst, Fabian Sven; Li, Mahei Manhai; Leimeister, Jan Marco. In Electronic Markets (EM), 35. 2025.
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Given the critical role of data availability for growth and innovation in financial services, especially small and mid-sized banks lack the data volumes required to fully leverage AI advancements for enhancing fraud detection, operational efficiency, and risk management. With existing solutions facing challenges in scalability, inconsistent standards, and complex privacy regulations, we introduce a synthetic data sharing ecosystem (SynDEc) using generative AI. Employing design science research in collaboration with two banks, among them UnionBank of the Philippines, we developed and validated a synthetic data sharing ecosystem for financial institutions. The derived design principles highlight synthetic data setup, training configurations, and incentivization. Furthermore, our findings show that smaller banks benefit most from SynDEcs and our solution is viable even with limited participation. Thus, we advance data ecosystem design knowledge, show its viability for financial services, and offer practical guidance for privacy-resilient synthetic data sharing, laying groundwork for future applications of SynDEcs.
Promoting students’ motivation in language education with gamified pedagogical conversational agents.Khosrawi-Rad, Bijan; Keller, Paul Felix; Benner, Dennis; Grogorick, Linda; Borchers, Arne; Janson, Andreas; Leimeister, Jan Marco; Robra-Bissantz, Susanne. In Computers & Education, 238(December, 105374), pp. 1–24. 2025.
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Pedagogical conversational agents (PCAs) like chatbots are a novel approach to technology-mediated language learning with artificial intelligence. They convey learning content interactively and accompany students in their education. However, many users find conversations with PCAs unmotivating. Gamification is a suitable solution to these motivational hurdles due to its playful nature. Given the difficulty of selecting the appropriate game elements and the scarcity of design recommendations for gamified PCAs, we propose the GNPL framework including a cohesive set of four design principles: goal-setting and reflection, novice-expert relationship, performance-related motivation, and learning story narration. In two design cycles, the article shows the application of the design principles in English learning – a domain commonly associated with motivational challenges – by implementing and evaluating a gamified PCA. The results show that the design principles significantly foster learners' motivation and that learners perceive a solid language learning experience, expressed by higher perceived value and social factors. They highlight the relevance of aligning the PCA's social role, the motivational impact of gamification, and the educational goals of the learning context. The design principles guide educators and developers in gamified PCA design. The paper contributes to the theory stream of PCAs by investigating learners' motivation enhancement when using PCAs. In addition, the paper provides new knowledge on meaningful gamification in an unexplored context and practical insights to solve the design challenges of selecting game elements in this context. Furthermore, it shows how language education can be supported by educational technology.
„The wireless seat belt”: Perspectives, challenges and requirements for 5G and 6G wireless communications.David, K. In Tagungsband 29. VDE ITG Fachtagung. IEEE, 2025.
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Exploring Democracy-Friendly News Navigation.Lackner, Konstantin; Uhlmann, Markus; Horn, Viktoria. In Proceedings of the Weizenbaum Conference 2025: Empowering People in Online Spaces: Democracy and Well-Being in Digital Societies, C. Iglesias Keller, J. Ohme, M. Buchner (eds.), pp. 155–159. Weizenbaum Institute, 2025.
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Overview of Touché 2025: Argumentation Systems.Kiesel, Johannes; c Cau gri c Cöltekin; Gohsen, Marcel; Heineking, Sebastian; Heinrich, Maximilian; Fröbe, Maik; Hagen, Tim; Aliannejadi, Mohammad; Anand, Sharat; Erjavec, Tomavz}; Hagen, Matthias; Kopp, Matyávs}; Ljube\vs}i{{’c}}, Nikola; Meden, Katja; Mirzakhmedova, Nailia; Morkevivc}ius, Vaidas; Scells, Harrisen; Wolter, Moritz; Zelch, Ines; Potthast, Martin; Stein, Benno. In Experimental IR Meets Multilinguality, Multimodality, and Interaction. 16th International Conference of the CLEF Association (CLEF 2025), of Lecture Notes in Computer Science, J. C. de Albornoz, J. Gonzalo, L. Plaza, A. García Seco de Herrera, J. Mothe, F. Piroi, P. Rosso, D. Spina, G. Faggioli, N. Ferro (eds.). Springer, Berlin Heidelberg New York, 2025.
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Kesişimsel Toplumsal Cinsiyet Araştırmaları Perspektifinden Dijital Dönüşüm: Zorluklar ve Atılacak Adımlar.Draude, Claude. In Kültür ve Siyasette Feminist Yaklaşımlar, (46), pp. 24–41. 2025.
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Expressive Pooling for Graph Neural Networks.Lachi, Veronica; Moallemy-Oureh, Alice; Roth, Andreas; Welke, Pascal. In Transactions on Machine Learning Research. 2025.
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Considerable efforts have been dedicated to exploring methods that enhance the expressiveness of graph neural networks. Current endeavors primarily focus on modifying the message-passing process to overcome limitations imposed by the Weisfeiler-Leman test, often at the expense of increasing computational cost. In practical applications, message-passing layers are interleaved with pooling layers for graph-level tasks, enabling the learning of increasingly abstract and coarser representations of input graphs. In this work, we formally prove two directions that allow pooling methods to increase the expressive power of a graph neural network while keeping the message-passing method unchanged. We systemically assign eight frequently used pooling operators to our theoretical conditions for increasing expressivity and introduce a novel pooling method XP, short for eXpressive Pooling, as an additional simple method that satisfies our theoretical conditions. Experiments conducted on the Brec dataset confirm that those pooling methods that satisfy our conditions empirically increase the expressivity of graph neural networks.
Matters of Explanation: Rethinking Explainability with Tangible, Embodied, Material Interactions.Klumbytė, Goda; Draude, Claude. In Proceedings of the AAAI/ACM Conference on AI, Ethics, and Society, 8(2), pp. 1491–1500. 2025.
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Conceptualizing the Design Space of Artificial Intelligence Strategy: A Taxonomy and Corresponding Clusters.Hofmann, Peter; Meierhöfer, Simon; Müller, Leon; Oberländer, Anna Maria; Protschky, Dominik. In Business & Information Systems Engineering (BISE). 2025.
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As the real-world use of Artificial intelligence (AI) becomes increasingly pervasive, the interest of organizations in the nascent technology is currently at its peak. Although the scientific literature points out that a strategy is key to responding to technological breakthroughs, the three facets of autonomy, learning, and inscrutability that distinguish contemporary AI from previous generations of IT give rise to a novel and distinctive perspective on strategy. Particularly, the facets of contemporary AI lead to AI-induced market and resource shifts and, thus, to AI-related strategic challenges regarding the scope, scale, speed, and source from which organizations make strategic deliberations. This ultimately requires a strategic response from organizations in the form of an AI strategy. Against this backdrop, this study proposes a multi-layer taxonomy with 15 dimensions and 45 characteristics that unveils how organizations currently structure and organize an AI strategy. Conducting a cluster analysis on this foundation, this study further provides four clusters that delineate predominant design options for developing a new AI strategy or evaluating an existing one. In this way, the results contribute to a fundamental understanding of the design space of an AI strategy and enrich recent discussions among researchers and practitioners on how to advance the real-world use of AI.
Kapitel „Einführung“.Hornung, G.; Schallbruch, M. In IT-Sicherheitsrecht. Praxishandbuch, Second, , G. Hornung, M. Schallbruch (eds.), pp. 29–41. Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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IT-Sicherheitsrecht. Praxishandbuch. Hornung, G.; Schallbruch, M. Second, . Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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STADE: Standard Deviation as a Pruning Metric.de Portugal Mecke, Diego Coello; Alyoussef, Haya; Stubbemann, Maximilian; Koloiarov, Ilia; Hanika, Tom; Schmidt-Thieme, Lars. 2025.
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Konsum.Lamla, Jörn; Roschka, Jakob. In Politische Soziologie, M. Endreß, B. Rampp (eds.), pp. 523–527. Nomos, Baden-Baden, 2025.
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PPTopoGym: Towards an RL Environment for Topology Actions on Power Grids.Köhler, Dominik; Hassouna, Mohamed; Degtyar, Dmitry; Krauß, Jonas; Brendlinger, Kurt; Scholz, Christoph. In Workshop on Machine Learning for Sustainable Power Systems (ML4SPS 2025), ECML PKDD. Springer, 2025.
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Power grids are facing growing challenges, arising from the increasing share of renewable energy sources and highly variable loads, in- troducing significant variability into both power generation and demand. This variability can create transmission line bottlenecks, which in turn lead to overheating. Transmission system operators address this prob- lem by rerouting the power flow via topological control, which is more cost-effective than redispatch measures. While reinforcement learning has shown promise in optimizing such topology changes, existing reinforce- ment learning environments exhibit notable differences from real-world operations. To support research and bridge the gap to real-world ap- plications, we present PPTopoGym—a reinforcement learning environ- ment for evaluating the impact of topology actions on the power flow in pandapower-based grids. It allows for simulations with variable load and generation profiles, and supports direct computation of key grid security metrics, i.e., N−0 and N−1 security constraints for each time step. PP- TopoGym addresses key limitations of existing environments by enabling realistic grid modeling and the integration of real-world data. The code is publicly available.
Empirische Evaluation von personalisierten Fahrgastinformationen auf einem Smart Public Display mit Fokus auf Anmeldeverfahren und Datenschutzbedenken.Beckers, L.; Wehr, F.; Helmke, j. T.; Schindler, S.; Schmidt, L.; Hornung, G. In Arbeit 5.0: Menschzentrierte Innovationen für die Zukunft der Arbeit: 71. Kongress der Gesellschaft für Arbeitswissenschaft (Aachen 2025), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 450–455. GfA-Press, Sankt Augustin, 2025.
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Unter Berücksichtigung von rechtlichen Aspekten werden in diesem Beitrag Ergebnisse zu Datenschutzbedenken bezüglich der Nutzung personalisierter Fahrgastinformationen des öffentlichen Personennahverkehrs auf einem Smart Public Display aus zwei Laborstudien (n = 60) verglichen, in denen verschiedene Anmeldeverfahren und Abstände einer umstehenden Person berücksichtigt wurden. Signifikante Unterschiede deuten darauf hin, dass bei Anmeldung via Gesichtserkennung vermehrt Datenschutzbedenken im Gegensatz zur Anmeldung via RFID-fähiger Karte vorliegen. Es zeigen sich keine signifikanten Unterschiede aufgrund des Abstands einer umstehenden Person. Unter ergänzender Betrachtung der Technologieakzeptanz scheint die Karte das geeignetere Anmeldeverfahren zu sein.
Bürokratieabbau durch Risikoorientierung – Ein Beitrag zur Diskussion um eine Reform der Datenschutz-Grundverordnung.Geminn, C. In Zeitschrift für Datenschutzrecht, pp. 438–442. 2025.
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KI-Training mit Social Media-Daten. (Keine) Grenzen durch DMA und DS GVO?Hornung, G. In Künstliche Intelligenz und Recht, pp. 407–413. 2025.
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DDoS on Repeat: Measuring Pulse-Wave DDoS in the Wild.Kopp, Daniel; Hohlfeld, Oliver. In ITC-36, pp. 1–9. IEEE, 2025.
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Google Topics as a Way Out of the Cookie Dilemma?Köppel, M.; Muttach, J.-P.; Hornung, G. In Machine Learning and Principles and Practice of Knowledge Discovery in Databases. International Workshops of ECML PKDD 2023, CCIS 2133, pp. 493–506. Cham, 2025.
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Less is More or More is Better? Comparing Static and Generative AI-Based Recovery for Chatbot Service Breakdowns.Benner, Dennis; Janson, Andreas; Tan, Chee-Wee. In International Conference on Information Systems (ICIS). Nashville, USA, 2025.
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Conversational breakdowns in chatbot-based customer service interactions can impair service quality and brand perception. Our study investigates how static versus generative AI (GAI)-based recovery affects user experience in such scenarios. Using a dual-study design, Study 1 examines two static strategies: Inform (explanation-focused) and Repair (action-focused). We find that Repair significantly enhances recovery quality and service perception, while Inform offers limited benefits when used alone. Study 2 explores the potential of GAI-driven recovery, employing a chatbot capable of nuanced, interactive support. Preliminary findings suggest that GAI-based recovery may increase resolution success, particularly in complex interactions, but could demand higher cognitive effort from users. By comparing both approaches and introducing a sequencing approach, our study provides novel insights into how recovery design and GAI influence service outcomes. Our results inform the design of future chatbot service systems, suggesting that adaptive, generative recovery may complement traditional static recovery strategies under specific conditions.
An Explorative Diary Study of AI-Generated Podcasts in University Education: Benefits, Challenges, and Future Directions.Benner, Dennis; Rauch, Jannik; Janson, Andreas; Leimeister, Jan Marco. In Extended Abstracts of the CHI Conference on Human Factors in Computing Systems (CHI EA ’25). ACM, Yokohama, Japan, 2025.
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In this study, we explore the potential of AI-generated podcasts as an educational tool in the evolving landscape of learning media. Podcasts have grown increasingly relevant in education due to their accessibility and ability to integrate learning into everyday life. With the advent of generative artificial Intelligence (AI), there is a unique opportunity for scalable and adaptable creation of learning media. However, with novel technology, there also come new challenges. Thus, we developed fine-tuned AI-generated podcasts using Google NotebookLM, our course materials, and a custom prompt. We conducted a one-month explorative evaluation in the field using a qualitative diary study. Our study reveals that students find the podcasts beneficial for flexible everyday learning but also point toward challenges like a lack of emotional engagement and technical non-English language issues. In sum, our study highlights the current benefits and challenges of AI-generated podcasts and presents an agenda for future research.
Common ground improves learning with conversational agents.Körner, Anita; Tolzin, Antonia; Janson, Andreas; Leimeister, Jan Marco; Rummer, Ralf. In Behaviour & Information Technology. 2025.
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Although conversational agents are successfully applied in teaching, it is largely unclear which communication principles should be employed to optimise learning. We examine the influence of common ground (i.e. shared knowledge on which to build during conversation) on learning. In an in-class experiment, students studied with one of two pedagogical conversational agents. The control version provided information without emphasising grounding, whereas the common ground version emphasised grounding, for example, by encouraging students to monitor and repair common ground. After the learning unit, students evaluated their learning experience and the pedagogical conversational agent, after which they were tested on the studied material. Students in the common ground (vs. the control) condition performed better in a post-study knowledge test and engaged longer with the pedagogical conversational agent. Thus, the common ground emphasis facilitated learning with a conversational agent, indicating that grounding principles should be incorporated when designing conversational agents.
Diversitätsgerechter Privatheitsschutz in digitalen Umgebungen.Koch, H.; Strathmann, C.; Hennig, M.; Geminn, C.; Heesen, J.; Krämer, N.; Reinhardt, K.; Schmied, L. In Freiheit in digitalen Infrastrukturen, Reihe Privatheit und Selbstbestimmung in der digitalen Welt, M. Friedewald, A. Roßnagel, M. Karaboga, C. Geminn (eds.). Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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DDoS equilibrium: Internet measurement perspective on attacks and mitigation.. Technical Report (PhD dissertation), . Kopp, Daniel. PhD dissertation. University of Kassel, Germany, 2025.
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DDoS in Balance: Globale Angriffsdynamik und Mitigation.Kopp, Daniel. In Ausgezeichnete Informatikdissertationen 2024 (Band 25), Vol. 25, pp. 151–160. Gesellschaft für Informatik e.V., Bonn, 2025.
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Incomplete Formal Contexts and Their Intrinsic Dimension.Hille, Tobias; Hanika, Tom. In SpringerLink, Vol. 15941, P. Cellier, B. Ganter, R. Missaoui (eds.), pp. 342–358. Springer, Cham, Switzerland, 2025.
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Data selection strategies for minimizing measurement time in materials characterization.Liehr, Alexander; Dingel, Kristina; Kottke, Daniel; Degener, Sebastian; Meier, David; Sick, Bernhard; Niendorf, Thomas. In Scientific Reports, 15(1), p. 15182. Springer Nature, 2025.
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Every new material needs to be assessed and qualified for an envisaged application. A steadily increasing number of new alloys, designed to address challenges in terms of reliability and sustainability, poses significant demands on well-known analysis methods in terms of their efficiency, e.g., in X-ray diffraction analysis. Particularly in laboratory measurements, where the intensities in diffraction experiments tend to be low, a possibility to adapt the exposure time to the prevailing boundary conditions, i.e., the investigated microstructure, is seen to be a very effective approach. The counting time is decisive for, e.g., complex texture, phase, and residual stress measurements. Traditionally, more measurement points and, thus, longer data collection times lead to more accurate information. Here, too short counting times result in poor signal-to-background ratios and dominant signal noise, respectively, rendering subsequent evaluation more difficult or even impossible. Then, it is necessary to repeat experiments with adjusted, usually significantly longer counting time. To prevent redundant measurements, it is state-of-the-art to always consider the entire measurement range, regardless of whether the investigated points are relevant and contribute to the subsequent materials characterization, respectively. Obviously, this kind of approach is extremely time-consuming and, eventually, not efficient. The present study highlights that specific selection strategies, taking into account the prevailing microstructure of the alloy in focus, can decrease counting times in X-ray energy dispersive diffraction experiments without any detrimental effect on data quality for the subsequent analysis. All relevant data, including the code, are carefully assessed and will be the basis for a widely adapted strategy enabling efficient measurements not only in lab environments but also in large-scale facilities.
Risikoorientierung bei Datenschutzgrundsätzen und Erlaubnistatbeständen?Geminn, C. In Bürokratieabbau im Datenschutz, Forum Datenschutz (Neue Folge), Vol. 5, A. Roßnagel, A. Wallmann (eds.). Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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Dynamic Multimodal Cyclist Behaviour Modelling: From Representation Insights to Federated Collaboration.Gao, Shang. In International Conference on Architecture of Computing Systems (ARCS), S. Tomforde, C. Krupitzer (eds.), pp. 389–398. Springer, 2025.
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In the field of intelligent transportation systems, accurately modelling cyclist behaviour is crucial to enhancing traffic safety and efficiency, particularly as road environments are increasingly shared with automated vehicles. Modelling cyclist behaviour is intrinsically complex due to its dynamic, context-dependent nature, shaped by diverse environmental and individual factors. These complexities pose significant challenges for traditional centralized learning approaches, particularly regarding data privacy concerns and heterogeneity across distributed data sources. Federated learning, as an emerging framework, offers the potential to address these challenges by enabling collaborative model training without sharing raw data. However, in real-world traffic scenarios, federated learning must tackle the complexities of non-independent and identically distributed data and the need for real-time adaptability in dynamic traffic environments. This work explores an uncertainty-aware federated learning framework, incorporating multimodal data fusion, to support modelling cyclist behaviour in traffic environments. This research addresses key challenges in federated learning for cyclist behaviour modelling and explores potential solutions, offering both theoretical and practical insights for future applications in intelligent transportation systems.
Integrating Brand Identity Into AI-Based Conversational Agents: A Systematic Literature Review.Dittmar, Angelia; Reinhard, Philipp; Li, Mahei Manhai; Karst, Fabian; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). Big Island, Hawaii, 2025.
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A company's brand identity is vital for fostering meaningful interactions with customers in a digital economy. As generative artificial intelligence (GenAI) becomes increasingly integrated into our daily lives, AI-based assistants are evolving into the primary channel for representing a brand's identity. Consequently, brand departments face the challenge of translating their company's brand identity into highly interactive AI-based assistants effectively. While there is diverse research on single cues that influence user perceptions, the literature lacks a comprehensive understanding of conversational cues and their impact on brand-related outcomes. Hence, we conduct a systematic literature review to identify verbal and visual cues in the design of AI-based chatbots and examine how they influence the perceptions of the assistants and the brand. We contribute a conceptual framework that summarizes the independent and dependent variables as well as their interrelationships and provides researchers and practitioners with a basis for designing and studying conversational design in the age of GenAI.
Wettbewerb um die Zukunft – Die Regulierung von Künstlicher Intelligenz in Japan und Europa.Geminn, C. In Die Öffentliche Verwaltung, pp. 449–462. 2025.
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Mehr Pionierinnen für die Informatik – Ein Programm zur Inspiration und Orientierung zum Informatikstudium für Schülerinnen.Dittert, Nadine; Pancratz, Nils; Schmid, Ute; Draude, Claude. In Grenzen überwinden - voneinander lernen : 21. GI-Fachtagung Informatik und Schule, 22. bis 24. September 2025, Stoos, Schweiz : Proceedings, of Lecture Notes in Informatics, M. Grillenberger, A. Grillenberger (eds.), pp. 279–280. Gesellschaft für Informatik, Bonn, 2025.
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Ein fortwährend relevantes Thema in der Informatik und ihrer Didaktik ist der Gender-Gap. Das Projekt PIONIERIN zielt darauf ab, Schülerinnen den Weg ins Informatikstudium zu bereiten. Im Fokus steht hierbei der Übergang von (außer-)schulischen Informatikaktivitäten zum Studium durch die Entwicklung von Lernumgebungen, die bekannte Forschungsergebnisse berücksichtigen und gezielt mit Informatikinhalten der ersten Semester verbinden. Die didaktisch rekonstruierten Lernangebote knüpfen dabei gezielt an den Perspektiven junger Frauen auf das Informatikstudium an. Forschungsseitig stehen die Wirksamkeit dieser Maßnahmen sowie Beweggründe für oder gegen ein Informatikstudium im Fokus, um langfristig den Gender-Gap in der Informatik zu reduzieren.
Das Zusammenspiel von KI-VO und DS-GVO - Ein harmonisches Miteinander?Geminn, C.; Nebel, M. In Datenschutz und Datensicherheit, pp. 279–283. 2025.
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Unify: Uncertainty incorporated Federated Learning for Object Detection.Gao, Shang; Sick, Bernhard; Götz-Hahn, Franz. In International Conference on Architecture of Computing Systems (ARCS), pp. 330–344. Springer, 2025.
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Federated Learning (FL) has demonstrated promise for collaborative training on decentralized data while preserving privacy. However, applying FL to object detection remains challenging due to non-IID data distributions and domain shifts that can degrade performance with standard aggregation methods. To address these issues, we propose the Uncertainty Incorporated Federated Learning for Object Detection (Unify) framework, a novel FL framework that leverages Evidential Learning (EL) to estimate both epistemic and aleatoric uncertainties. By integrating these uncertainty estimates into the aggregation process, Unify down-weights unreliable client updates, leading to improved cross-domain generalization and enhanced stability. Built upon a lightweight YOLOX detector, our approach achieves detection performance that closely approaches centralized training while significantly outperforming conventional FedAvg under heterogeneous conditions. Evaluations on the KITTI and nuImages datasets demonstrate that Unify improves mean Average Precision (mAP) and yields uncertainties. The findings highlight the potential of uncertainty-incorporated FL in developing resilient, adaptive, and self-organizing computing systems.
Simplified Longitudinal Retrieval Experiments: A Case Study on Query Rewriting and Document Boosting.Keller, Jüri; Fröbe, Maik; Hendriksen, Gijs; Alexander, Daria; Potthast, Martin; Schaer, Philipp. In Experimental IR Meets Multilinguality, Multimodality, and Interaction - 16th International Conference of the CLEF Association, CLEF 2025, Madrid, Spain, September 9-12, 2025, Proceedings, Vol. 16089 of Lecture Notes in Computer Science, J. Carrillo-de-Albornoz, A. G. S. Herrera, J. Gonzalo, L. Plaza, J. Mothe, F. Piroi, P. Rosso, D. Spina, G. Faggioli, N. Ferro (eds.), pp. 117–127. Springer, 2025.
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Graph Neural Networks for Grid Control: Prospects in AI-assisted Transmission Grid Operation.Holzhueter, Clara; Lytaev, Pawel; Dipp, Marcel; Hassouna, Mohamed; Brendlinger, Kurt; Viebahn, Jan; Gegelman, Wiktor; Merz, Christian. In ETG Kongress 2025; Voller Energie – heute und morgen., pp. 874–881. VDE, 2025.
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Transmission grid congestion management and outage planning are critical tasks in modern grid operation due to the non-linear nature of power flows and the large-scale optimization challenges faced by operators. Traditionally, overloads are addressed through generator redispatch, a costly and therefore suboptimal measure. In the project "Graph Neural Networks for Grid Control" (GNN4GC), we investigate alternative strategies, focusing on topological remedial actions that could minimize or even completely eliminate redispatch costs. Topology optimization, a core aspect of this project, presents significant challenges due to its combinatorial nature, requiring extensive computational resources for power flow calculations. To address this, GNN4GC is split into three stages. In the first stage, we explore the use of Graph Neural Networks (GNNs) to accelerate these calculations and benchmark their performance against established tools like pandapower and a DC power flow solver developed by 50Hertz Transmission GmbH and TenneT TSO GmbH. In the second stage, we use Reinforcement Learning and other heuristics to select suitable topologies and solve the topology optimization problem. As a third stage, we test the respective agent on real-life grids to benchmark the methodology. The aim of the final stage is to build a recommender system that can be used in a control room in the future.
The Two Paradigms of LLM Detection: Authorship Attribution vs. Authorship Verification.Bevendorff, Janek; Wiegmann, Matti; Richter, Emmelie; Potthast, Martin; Stein, Benno. In The 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025) (Findings), W. Che, J. Nabende, E. Shutova, M. T. Pilehvar (eds.), pp. 3762–3787. Association for Computational Linguistics, 2025.
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Big Data und KI bei der Polizei – Das Palantir-Urteil in der interdisziplinären Diskussion. Bäuerle, M.; Denker, K.; Geminn, C.; Schöndorf-Haubold. Campus, Frankfurt a.M./New York, 2025.
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AudioProtoPNet: An interpretable deep learning model for bird sound classification.Heinrich, René; Rauch, Lukas; Sick, Bernhard; Scholz, Christoph. In Ecological Informatics, 87, p. 103081. Elsevier, 2025.
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Deep learning models have significantly advanced acoustic bird monitoring by recognizing numerous bird species based on their vocalizations. However, traditional deep learning models are black boxes that provide no insight into their underlying computations, limiting their usefulness to ornithologists and machine learning engineers. Explainable models could facilitate debugging, knowledge discovery, trust, and interdisciplinary collaboration. We introduce AudioProtoPNet, an adaptation of the Prototypical Part Network (ProtoPNet) for multi-label bird sound classification. It is inherently interpretable, leveraging a ConvNeXt backbone to extract embeddings and a prototype learning classifier trained on these embeddings. The classifier learns prototypical patterns of each bird species’ vocalizations from spectrograms of instances in the training data. During inference, recordings are classified by comparing them to learned prototypes in the embedding space, providing explanations for the model’s decisions and insights into the most informative embeddings of each bird species. The model was trained on the BirdSet training dataset, which consists of 9734 bird species and over 6800 h of recordings. Its performance was evaluated on the seven BirdSet test datasets, covering different geographical regions. AudioProtoPNet outperformed the state-of-the-art bird sound classification model Perch, which is superior to the more popular BirdNet, achieving an average AUROC of 0.90 and a cmAP of 0.42, with relative improvements of 7.1% and 16.7% over Perch, respectively. These results demonstrate that even for the challenging task of multi-label bird sound classification, it is possible to develop powerful yet interpretable deep learning models that provide valuable insights for professionals in ornithology and machine learning.
Towards Cognitive Situational Awareness in Maritime Traffic Using Federated Evidential Learning.Gao, Shang; Huang, Zhixin; Al-Falouji, Ghassan; Sick, Bernhard; Tomforde, Sven. In IEEE Conference on Cognitive and Computational Aspects of Situation Management (CogSIMA), pp. 9–16. IEEE, 2025.
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The increasing complexity of maritime navigation and the shift towards (semi)autonomous systems necessitate enhanced situational awareness (SA) to ensure maritime safety. This transition introduces new requirements for situation mod- elling and SA, particularly in busy waterways. To address these challenges, we present the Federated Evidential Learning for Anomaly Detection of Ship Trajectories (FEAST) framework, which integrates Federated Learning and Evidential Learning to provide a privacy-preserving, collaborative, and uncertainty- aware approach to out-of-distribution (OOD) anomaly detection in maritime traffic. FEAST uses data from the Automatic Identification System from the Kiel region, Germany, which exhibits unique characteristics of dynamic and heterogeneous maritime activity due to its connection with the traffic-dense Kiel Canal. Our extensive evaluations demonstrate that FEAST improves OOD anomaly detection by leveraging epistemic and aleatoric uncertainty estimates, outperforming baseline methods such as Denoise AutoEncoders and Variational AutoEncoders. Consequently, FEAST forms a solution to reliable and inter- pretable maritime traffic anomaly detection, supporting enhanced SA in maritime operations.
„Privilegien“ bei der Erforschung maschinellen Lernens.Kostov, I. In Wissenschaftsrecht, pp. 189–207. 2025.
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Ein offener Webindex: Chancen und Risiken für Grundrechte und Grundfreiheiten.Beer, L.; Geminn, C.; Johannes, P. C.; Koulani, H.; Söllner, M.; Voigt, S. In Freiheit in digitalen Infrastrukturen, Reihe Privatheit und Selbstbestimmung in der digitalen Welt, M. Friedewald, A. Roßnagel, C. Geminn, M. Karaboga (eds.), pp. 79–107. Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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An Open Web Index - opportunities and risks for fundamental rights and freedoms.Beer, Leopold; Johannes, Paul C.; Koulani, Huda; Geminn, Christian L.; Söllner, Matthias; Voigt, Stefan. In INFORMATIK, Vol. P-366 of LNI, U. Lucke, S. Stieglitz, F. Uebernickel, A.-L. Lamprecht, M. Klein (eds.), pp. 39–51. Gesellschaft für Informatik, Bonn, 2025.
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A freely accessible and comprehensive European Open Web Index could drive the emergence of new web and data services, including Artificial Intelligence (AI) systems. Such an index would significantly contribute to diversity in the digital market and would enable users to choose between different services. This article addresses and explores the legal framework and potential for such an Open Web Index and it’s applications, including the training of Large Language Models (LLMs). Opportunities and risks for fundamental rights and freedoms are analysed, followed by an overview of legal obligations concerning data protection and artificial intelligence. Evaluating the Open Web Index through the lens of fundamental rights reveals both significant risks and substantial opportunities. While it may challenge rights such as privacy, data protection, intellectual property, and the freedom to conduct a business, it also holds the potential to enhance transparency, democratize access to information and promote freedom of expression.
Integration realer Werkzeuge in eine VR-Trainingssoftware für komplexe manuelle Montageprozesse (Forschungsdaten).Mack, D.; Schmidt, L. Fachgebiet Mensch-Maschine-Systemtechnik, Universität Kassel, 2025.
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Der Datensatz gehört zu der Publikation "Integration realer Werkzeuge in eine VR-Trainingssoftware für komplexe manuelle Montageprozesse - Vergleichsstudie mit und ohne Haptik" (DELFI 2025). In der Studie wurde der Einfluss von haptischem Feedback in Virtual-Reality-Trainingsumgebungen auf den Lerntransfer bei der Montage eines Notgriffs für Schienenfahrzeuge untersucht. In einem Between-Subjects-Design absolvierten zwei Gruppen (je 15 Teilnehmende) ein VR-basiertes Training mit und ohne Integration realer Werkzeuge und Montagevorrichtungen. Anschließend führten die Probanden reale Montagen durch. Erhoben wurden: - Demografische Daten und Technikaffinität (TA-EG) - Trainings- und Montagezeiten (Videoaufzeichnung) - Fehleranzahl bei der Montage - Gebrauchstauglichkeit (SUS), Beanspruchung (NASA-TLX) und qualitative Feedbacks Die Auswertung erfolgte mittels t-Test, Mann-Whitney-U-Test und deskriptiver Statistik. Die Ergebnisse zeigen, dass haptische Elemente in der VR-Anwendung signifikant positive Effekte auf die Montagezeit und die Fehlerreduktion hatten. Alle Teilnehmenden gaben ihr schriftliches Einverständnis zur Teilnahme und zur Nutzung der Daten.
New Materialist Informatics: New Materialism/Computer Science/Technology Design.Klumbytė, Goda; Draude, Claude. In Posthuman Convergences: Transdisciplinary Methods and Practices, G. Klumbytė, E. Jones, R. Braidotti (eds.), pp. 184–216. Edinburgh University Press, Edinburgh, 2025.
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Overview of the ``Voight-Kampff’’ Generative AI Authorship Verification Task at PAN and ELOQUENT 2025.Bevendorff, Janek; Wang, Yuxia; Karlgren, Jussi; Wiegmann, Matti; Fröbe, Maik; Tsivgun, Akim; Su, Jinyan; Xie, Zhuohan; Abassy, Mervat; Mansurov, Jonibek; Xing, Rui; Ta, Minh Ngoc; Elozeiri, Kareem Ashraf; Gu, Tianle; Tomar, Raj Vardhan; Geng, Jiahui; Artemova, Ekaterina; Shelmanov, Artem; Habash, Nizar; Stamatatos, Efstathios; Gurevych, Iryna; Nakov, Preslav; Potthast, Martin; Stein, Benno. In Working Notes of CLEF 2025 -- Conference and Labs of the Evaluation Forum, Vol. 4038 of CEUR Workshop Proceedings, G. Faggioli, N. Ferro, P. Rosso, D. Spina (eds.), pp. 3504–3534. CEUR-WS.org, 2025.
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Souverän ist, wer über den Datenschutz bestimmt: Die Expansion des Datenschutzrechts als rechtsstaatliche Herausforderung.Hornung, G. In Selbstbehauptung der Demokratie. Freundesgabe für Christoph Gusy, J. Eichenhofer, K. Groh, K. Ziegler (eds.), pp. 227–246. Tübingen, 2025.
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§ 33.Hornung, G. In Verwaltungsrecht. VwVfG, Vol. 7, F. Schoch, J.-P. Schneider (eds.). Verlag C.H. Beck, München, 2025.
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Direitos do indivíduo no Regulamento da IA: os direitos de apresentar reclamação e de explicação sobre as decisões individuais.Hornung, G. In Revista de Direito Civil Contemporâneo, 44/2025, pp. 303–323. 2025.
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Overview of PAN 2025: Voight-Kampff Generative AI Detection, Multilingual Text Detoxification, Multi-Author Writing Style Analysis, and Generative Plagiarism Detection.Bevendorff, Janek; Dementieva, Daryna; Fröbe, Maik; Gipp, Bela; Greiner-Petter, André; Karlgren, Jussi; Mayerl, Maximilian; Nakov, Preslav; Panchenko, Alexander; Potthast, Martin; Shelmanov, Artem; Stamatatos, Efstathios; Stein, Benno; Wang, Yuxia; Wiegmann, Matti; Zangerle, Eva. In Experimental IR Meets Multilinguality, Multimodality, and Interaction. Proceedings of the Sixteenth International Conference of the CLEF Association (CLEF 2025), Vol. 16089 of Lecture Notes in Computer Science, J. C. de Albornoz, J. Gonzalo, L. Plaza, A. G. S. Herrera, J. Mothe, F. Piroi, P. Rosso, D. Spina, G. Faggioli, N. Ferro (eds.), pp. 388–411. Springer, Berlin Heidelberg New York, 2025.
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Einleitung (zusammen mit Simitis, S. / Spiecker gen. Döhmann, I.), Art. 1, Art. 94 und Art. 99 DSGVO (zusammen mit Spiecker gen. Döhmann, I.), Art. 3, Art. 4 Nr. 17 und Art. 27 DS-GVO sowie § 1 Abs. 4-8 BDSG.Hornung, G. In Datenschutzrecht. DS-GVO/BDSG, 2. Auflage, , S. Simitis, G. Hornung, I. Spiecker gen. Döhmann (eds.). Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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Intransparenz, Komplexität, Korrelationen: Zu Nichtwissen als Rechtsproblem.Kostov, I. In Künstliche Intelligenz und Recht, pp. 425–427. 2025.
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Präventive Verhaltensvorhersage durch „Künstliche Intelligenz“. Möglichkeiten, Maßstäbe, Misstrauen.Kostov, I. In Der Staat, 64(4), pp. 537–586. 2025.
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Designing Access?! Critical Reflections on Gender-specific Educational Initiatives in Computing.Bläsing, Lisa Marie; Draude, Claude. Gesellschaft für Informatik e.V., 2025.
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Participatory approaches in human-computer interaction traditionally center around the co-creation of digital systems and on the empowerment of lay users. This position paper sets a different focus and reframes participation as a means of access to design itself. Hence, it is not about designing technologies, but about reflecting on how to create conditions under which marginalized groups — specifically young women — can access computer science education. The paper is motivated by a current research project that seeks to increase young women's interest in studying computer science (CS). Situated within the broader goal of diversifying the field of computing, the research project interrogates how digital fabrication and didactic reconstruction approaches to CS education could support increased representation of women in CS study programs. What we present here is not so much about the didactical approaches as such but a reflection on the broader setup of the project through the lens of intersectional gender research and the question of participation.
The Geometric Structure of Topic Models.Hirth, Johannes; Hanika, Tom. In CONCEPTS, Vol. 15941 of Lecture Notes in Computer Science, P. Cellier, B. Ganter, R. Missaoui (eds.), pp. 19–34. Springer, 2025.
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Not Enough Data to Be Fair? Evaluating Fairness Implications of Data Scarcity Solutions.Karst, Fabian; Li, Mahei Manhai; Reinhard, Philipp; Leimeister, Jan Marco. In Proceedings of the 58th Hawaii International Conference on System Sciences (HICSS), pp. 6886–6895. Hawaii, USA, 2025.
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This study explores the implications of the use of data scarcity solutions on fairness in machine learning, specifically in consumer credit interest rate prediction. We develop a comprehensive taxonomy of Data Scarcity Solutions (DSS) by analyzing academic literature, data science competitions, and practical implementations. We identify six distinct DSS clusters: Data Extension, Pre-Training, Public Data Inclusion, Data Sharing, Federated Learning, and Active Learning. Our evaluation shows that most DSS enhance both performance and fairness, with minimal negative correlation between the two. Notably, approaches incorporating external or synthetic data significantly improve fairness. This research contributes to understanding DSS beyond algorithmic performance, providing a framework for evaluating their societal impact. Furthermore, it offers practitioners a taxonomy to select the right method for tackling data scarcity and addresses fairness concerns in real-world scenarios.
Einsatzmöglichkeiten niedrigschwelliger 3D-360°- und Augmented-Reality-Anwendungen zur Wissensvermittlung im Handwerk. Funk, J. In Vol. 5 of Schriftenreihe Mensch-Maschine-Systemtechnik. Kassel University Press, Kassel, 2025.
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Die Digitalisierung der Arbeitswelt bietet auch dem Mittelstand eine Vielzahl an innovativen Chancen und Wettbewerbsvorteilen, erfordert andererseits aber auch eine Qualifizierung der Mitarbeiter in diesem Bereich, damit Betriebe von den Vorteilen der Digitalisierung profitieren können. Eine Branche, die über besonderes Weiterbildungspotential verfügt, ist das Handwerk. Auf Basis von Virtual- und Augmented-Reality-(VR-/AR-)Technologien können für den Einsatz im Bildungssektor interessante neue Anwendungen realisiert werden. Vorteile dieser Anwendungen liegen bspw. in einer besseren Lernleistung und einer höheren Motivation der Lernenden. Aufgrund der flexiblen Einsatzmöglichkeiten und dem damit verbundenen hohen Potential werden VR-/AR-Anwendungen in der Bildung weiter an Bedeutung gewinnen. Im Rahmen dieser Arbeit wurden bereits vorhandene und zukünftige Möglichkeiten zur Wissensvermittlung im Handwerk untersucht. Digitale Lernplattformen sind weit verbreitet und ermöglichen schon jetzt ein flexibleres Lernen, bspw. durch asynchronen und dezentralen Zugriff auf Inhalte. Autorenwerkzeuge unterstützen Dozenten bei der Erstellung von hochwertigen Multi-Media-Inhalten. Potentiale neuer Technologien, wie 3D-360°- und AR-Anwendungen, können zu einem besseren Lernerlebnis beitragen, werden aber bisher kaum eingesetzt. Für diese Arbeit wurden niedrigschwellige 3D-360°- und AR-Anwendungen entwickelt, die sowohl einen breiten Einsatz durch günstige Hardware als auch eine leichte Inhaltserstellung ohne vertiefte Programmierkenntnisse ermöglichen. Zu Beginn wurden verfügbare Lernplattformen und Autorenwerkzeuge recherchiert, und es wurde exemplarisch der Einsatz einer ausgewählten Plattform für das Handwerk evaluiert. Aufbauend wurden die Möglichkeiten von 3D-360°- und AR-Anwendungen anhand von je zwei Forschungsfragen betrachtet. Zu jeder dieser Forschungsfragen wurde eine empirische Studie durchgeführt. Dabei wurde je eine Studie unter realen Bedingungen mit einer Stichprobe entsprechend der geplanten Zielgruppe durchgeführt. Die Ergebnisse der Arbeit zeigen Potentiale und mögliche Anwendungsmöglichkeiten von 3D-360°- und AR-Anwendungen auf. Die günstige und meist vorhandene Hardware, wie verwendete Smartphones, in Kombination mit leicht zu erstellenden Inhalten unterstützen hierbei eine breite Anwendung im Handwerk.
Counterfactual Query Rewriting to Use Historical Relevance Feedback.Keller, Jüri; Fröbe, Maik; Hendriksen, Gijs; Alexander, Daria; Potthast, Martin; Hagen, Matthias; Schaer, Philipp. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15574 of Lecture Notes in Computer Science, C. Hauff, C. Macdonald, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 138–147. Springer Nature, Cham, Switzerland, 2025.
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Large Language Model Relevance Assessors Agree With One Another More Than With Human Assessors.Fröbe, Maik; Parry, Andrew; Schlatt, Ferdinand; MacAvaney, Sean; Stein, Benno; Potthast, Martin; Hagen, Matthias. In 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), N. Ferro, M. Maistro, G. Pasi, O. Alonso, A. Trotman, S. Verberne (eds.), pp. 2858–2863. ACM, New York, 2025.
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Web-scale Retrieval Experimentation with chatnoir-pyterrier.Merker, Jan Heinrich; Bevendorff, Janek; Fröbe, Maik; Hagen, Tim; Scells, Harrisen; Wiegmann, Matti; Stein, Benno; Hagen, Matthias; Potthast, Martin. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15576 of Lecture Notes in Computer Science, C. Hauff, C. Macdonal, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 96–104. Springer Nature, Cham, Switzerland, 2025.
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Mirror, Mirror on the Wall: Enabling Computational Research on Beauty Ideals.Gollub, Tim; Achkar, Pierre; Potthast, Martin; Stein, Benno. In Annual International Conference of the Alliance of Digital Humanities Organizations (DH 2025), Conference Abstracts. Alliance of Digital Humanities Organizations, 2025.
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Call for Research on the Impact of Information Retrieval on Social Norms.Gollub, Tim; Achkar, Pierre; Potthast, Martin; Stein, Benno. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15575 of Lecture Notes in Computer Science, C. Hauff, C. Macdonal, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 371–384. Springer Nature, Cham, Switzerland, 2025.
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Rethinking AI Design Practices: A Reference Architecture for Generative AI Systems.Grau, Marc; Reinhard, Philipp; Bauer-Hänsel, Ingrid; Blohm, Ivo. In European Conference on Information Systems (ECIS). Aisel, Amman, Jordan, 2025.
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Generative AI (GenAI) holds the potential to transform various facets of society. While research and practice increasingly explore its diverse use cases and assess its impact, many companies continue to face significant challenges in designing and developing advanced GenAI systems, hindering their ability to derive value from these technologies. To address these challenges and offer guidance on emerging GenAI development practices, we propose a reference architecture that highlights key design decisions. Using a design science research approach, we developed the reference architecture informed by consortium workshops, literature reviews, and expert interviews. The reference architecture is grounded in eight key design requirements and serves as a strategic guide to streamline system design and assist organisational decision-making and communication. Additionally, the architecture contributes to the academic discourse by offering a structured framework for future research on the design peculiarities of GenAI systems, helping bridge the gap between practical implementations and theoretical insights.
Are Narratives a success factor for Digital Transformation? A Qualitative Study on the Importance of Narratives.Grauer, Teresa; Li, Mahei. In 20th International Conference on Wirtschaftsinformatik (WI). AIS eLibrary, Münster, Germany, 2025.
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Organizations seek to drive digital transformation. Initiatives fail, often due to human-related factors such as stakeholder resistance. Despite the role of human dynamics in digital transformation, research has yet to fully explore effective strategies for mitigating these challenges. Narratives represent a promising yet underexamined tool for managing human-related risks in digital transformation. Many organizations employ narratives, either implicitly or explicitly, to shape their transformation efforts. However, both scholars and practitioners lack understanding of how narratives influence transformation outcomes. This inductive case study examines how organizations leverage narratives to enhance digital transformation. We conducted interviews to analyze their use of narratives. Our findings reveal key functions and characteristics: (1) narratives serve a transformative, motivational function, (2) narratives help overcome resistance and engage people, (3) boundary conditions are relevant for successful narratives, (4) overarching narratives define digital transformation initiatives. By strategically shaping narratives, organizations can navigate human-related barriers and improve transformation success.
BLOCKCHAIN IN CONTINUING EDUCATION – TAXONOMY FOR A NEXT-GENERATION TEACHING PLATFORM.Meyer, Nathalie Alysha; Meier, Alexander. In European Conference on Information Systems (ECIS), Vol. 2025. AIS Electronic Library (AISeL), Amman, Jordan, 2025.
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The constantly growing educational technology market and rising demand for comprehensive, lifelong learning in rapidly digitizing environments, offer significant potential for implementing decentralized blockchain systems in the context of continuing education. However, the continuing education sector underutilizes the promised value. This paper develops a multi-layer taxonomy based on a systematic literature review and expert interviews, which contributes to systematically delineating possible augmentations of continuing education management using blockchain-based technology. Applications include fraud prevention, intellectual property protection, efficient and secure data exchange by tokenizing personal documents and developing interoperable, smart educational institutions using smart contracts and IoT. The taxonomy incorporates descriptive knowledge and prescriptive guidance to researchers in educational technology, implementers, and instructors in continuing education, as well as institutional decision-makers on the benefits of blockchain, such as decentralized governance, data security, immutability, and anonymity, leveraged throughout the phases of educational program development in an institutional or company-internal context.
Dynamiken digitaler Bewertung. Ein Vorschlag zur Sortierung.Krenn, Karoline/; Kropf, Jonathan; Laser, Stefan; Ochs, Carsten. In Dynamiken digitaler Bewertung. Über Gestaltungsspielräume in Infrastrukturen – von KI bis Queering, K. Krenn, J. Kropf, S. Laser, C. Ochs (eds.), pp. 1–27. Springer VS, Wiesbaden, 2025.
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The Second International Workshop on Open Web Search (WOWS).Farzana, Sheikh; Fröbe, Maik; Granitzer, Michael; Hendriksen, Gijs; Hiemstra, Djoerd; Potthast, Martin; Vries, Arjen; Zerhoudi, Saber. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), of Lecture Notes in Computer Science. Springer Nature, Cham, Switzerland, 2025.
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Creating the “Casual Listener”: Consecrating Institutions and Spotify’s “Curational Turn.”. Kropf, Jonathan. In Perspectives on Music after Bourdieu, R. Diaz-Bone, A. Lehmann-Wermser (eds.), pp. 293–312. Springer, Wiesbaden, 2025.
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Corpus Subsampling: Estimating the Effectiveness of Neural Retrieval Models on Large Corpora.Fröbe, Maik; Parry, Andrew; Scells, Harrisen; Wang, Shuai; Zhuang, Shengyao; Zuccon, Guido; Potthast, Martin; Hagen, Matthias. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15572 of Lecture Notes in Computer Science, C. Hauff, C. Macdonald, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 453–471. Springer Nature, Cham, Switzerland, 2025.
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Overview of the Plagiarism Detection Task at PAN 2025.Greiner-Petter, André; Fröbe, Maik; Wahle, Jan Philip; Ruas, Terry; Gipp, Bela; Aizawa, Akiko; Potthast, Martin. In Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025, Vol. 4038 of CEUR Workshop Proceedings, G. Faggioli, N. Ferro, P. Rosso, D. Spina (eds.), pp. 3575–3585. CEUR-WS.org, 2025.
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Designing for Trust: Integrating Self-referencing in Large Language Model-Based Health Coaching.Meywirth, Sophia; Janson, Andreas; Söllner, Matthias. In DESRIST (1), Vol. 15703 of Lecture Notes in Computer Science, S. Chatterjee, J. vom Brocke, R. Anderson (eds.), pp. 296–309. Springer, 2025.
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This research applies the Design Science Research (DSR) methodology to investigate how self-referencing in Large Language Model (LLM)-based health coaching influences user trust and perceptions of anthropomorphism. We synthesized theory-driven design principles to guide the integration of self-referencing and demonstrated them in a vignette-based prototype. Through a single-factorial between-subjects experiment, analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) and qualitative feedback, we identified a dual effect of self-referencing: while professional self-referencing enhances trust via increased anthropomorphism, overly personal references can directly undermine trust. Based on these findings, we refined our design principles to optimize trust-building in LLM-based coaching. Our contributions provide actionable design guidelines for creating more effective and trustworthy AI-driven health interventions, advancing the understanding of anthropomorphic design in digital coaching contexts.
Offset Finding of Beamline Parameters on the METRIXS Beamline at BESSY II Using Machine Learning.Meier, David; Zeschke, Thomas; Feuer-Forson, Peter; Sick, Bernhard; Viefhaus, Jens; Hartmann, Gregor. In Journal of Physics: Conference Series, p. 012130. IOP Publishing, 2025.
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Beamline alignment is challenging as the beamline components must be set up ideally so that the rays follow the desired optical path. Automated methods using a digital twin allow for faster diagnostics and improved beam properties compared to manual tuning. We introduce an automated method of finding the offsets to improve this digital twin model. These offsets represent the unknown but constant differences between the beamline parameter positions as set up at the physical beamline and the corresponding parameter positions of its digital twin. Our method assumes the capability to execute precise relative movements with a known step size for these parameters, although the absolute position information is unknown. By combining the surrogate model with a global optimizer, we successfully determine offsets for 34 beamline parameters on a simulated METRIXS beamline at the BESSY II synchrotron radiation source in Berlin.
Reconstructing time-of-flight detector values of angular streaking using machine learning.Meier, David; Viefhaus, Jens; Hartmann, Gregor; Helml, Wolfram; Otto, Thorsten; Sick, Bernhard. In Physical Review Accelerators and Beams, 28(7), p. 074601. American Physical Society, 2025.
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Angular streaking experiments enable for experimentation in the attosecond regions. However, the deployed time-of-flight (TOF) detectors are susceptible to noise and failure. These shortcomings make the outputs of the TOF detectors hard to understand for humans and further processing, such as, for example, the extraction of beam properties. In this article, we present an approach to remove high noise levels and reconstruct up to three failed TOF detectors from an arrangement of 16 TOF detectors. Due to its fast evaluation time, the presented method is applicable online during a running experiment. It is trained with simulation data, and we show the results of denoising and reconstruction of our method on real-world experiment data.
Pricing, Design and Cultivation – Conceptual Tools for the Normative Assessment of Fairness in the Age of Media Platformization.Kropf, Jonathan; Lamla, Jörn; Uhlmann, Markus. In Digital Journalism. 2025.
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Learning Effective Representations for Retrieval Using Self-Distillation with Adaptive Relevance Margins.Gienapp, Lukas; Deckers, Niklas; Potthast, Martin; Scells, Harrisen. In 15th International Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR 2025), H. Zamani, L. Dietz, B. Piwowarski, S. Bruch (eds.), pp. 275–285. ACM, New York, 2025.
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DEVELOPING A HYBRID VECTOR-GRAPH RETRIEVAL SYSTEM FOR ENTITY-PRESERVING AND INSPIRING STORYLINE CREATION OF PRESENTATION SLIDES.Meier, Alexander; Rietsche, Roman; Li, Mahei Manhai. In European Conference on Information Systems (ECIS). Amman, Jordan, 2025.
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Effective presentation slide creation is crucial for impactful communication, yet fully automating this task with AI is insufficient. Hybrid human-AI solutions often perform worse than pure AI or human creation due to overreliance on AI. To address this, we develop design principles for configuring human-AI hybrid systems in complex knowledge tasks using a design science research approach. Our prototype, NarrativeNet Weaver, leverages an underutilized corpus of existing presentation slides, applying generative AI advances in hybrid dense embedding and graph-based retrieval techniques. Evaluated through 15 think-aloud sessions and 73 user trials, users with NarrativeNet Weaver exhibit greater engagement and achieve equal or improved slide quality compared to those using a ChatGPT-based chatbot with a vector database. We contribute design knowledge for human-AI systems for complex multimodal content and offer a new approach to retrieving and visualizing existing slides, enhancing the utilization of valuable but underused resources.
Diskussionspapier zu den Auswirkungen weitreichender Klauseln in Verlagsverträgen über die Nutzung von generativer KI, Version 1.0; Stand: 10.11.2025. Grünberger, M.; Hornung, G. 2025.
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ImageCLEF 2025: Multimedia Retrieval in Medical, Social Media and Content Recommendation Applications.Ionescu, Bogdan; Müller, Henning; Stanciu, Dan-Cristian; Idrissi-Yaghir, Ahmad; Radzhabov, Ahmedkhan; de Herrera, Alba García Seco; Andrei, Alexandra; Storr as, Andrea; Ben Abacha, Asma; Bracke, Benjamin; Lecouteux, Benjamin; Stein, Benno; Macaire, Cécile; Friedrich, Christoph M.; Schmidt, Cynthia Sabrina; Fabre, Diandra; Schwab, Didier; Dimitrov, Dimitar; Esperanc ca-Rodier, Emmanuelle; Constantin, Gabriel; Becker, Helmut; Damm, Hendrik; Schäfer, Henning; Rodkin, Ivan; Koychev, Ivan; Kiesel, Johannes; Rückert, Johannes; Malvehy, Josep; textcommabelowStefan, Liviu-Daniel; Bloch, Louise; Potthast, Martin; Heinrich, Maximilian; Riegler, Michael A.; Dogariu, Mihai; Codella, Noel; Halvorsen, Pr al; Nakov, Preslav; Brüngel, Raphael; Novoa, Roberto Andres; Das, Rocktim Jyoti; Hicks, Steven A.; Gautam, Sushant; Pakull, Tabea M. G.; Thambawita, Vajira; Kovalev, Vassili; Yim, Wen-Wai; Xie, Zhuohan. In Advances in Information Retrieval. 47th European Conference on IR Research (ECIR 2025), Vol. 15576 of Lecture Notes in Computer Science, C. Hauff, C. Macdonal, D. Jannach, G. Kazai, F. M. Nardini, F. Pinelli, F. Silvestri, N. Tonellotto (eds.), pp. 398–406. Springer Nature, Cham, Switzerland, 2025.
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Dynamiken digitaler Bewertung. Über Gestaltungsspielräume in Infrastrukturen – von KI bis Queering. Krenn, Karoline; Kropf, Jonathan; Laser, Stefan; Ochs, Carsten. Springer VS, Wiesbaden, 2025.
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The Future of Consumption. Agenda for a new perspective on consumer Research.Lamla, Jörn; Heidbrink, Ludger; Hohnsträter, Dirk; Loer, Kathrin; Roschka, Jakob. Universität Kassel, Kassel, 2025.
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Interact360: a new paradigm for interacting with a future smart city.Mathuseck, L.; Lange, S.; David, K. In Proc. 1st Symposium on Data Driven Smart City Science and Transferability (DaSCiT). 2025.
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The Viability of Crowdsourcing for RAG Evaluation.Gienapp, Lukas; Hagen, Tim; Fröbe, Maik; Hagen, Matthias; Stein, Benno; Potthast, Martin; Scells, Harrisen. In 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), N. Ferro, M. Maistro, G. Pasi, O. Alonso, A. Trotman, S. Verberne (eds.), pp. 159–169. ACM, New York, 2025.
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Personalized Coaching for Lifestyle Behavior Change through Large Language Models: A Qualitative Study.Meywirth, Sophia; Janson, Andreas; Söllner, Matthias. In HICSS, T. X. Bui (ed.), pp. 1–10. ScholarSpace, 2025.
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This paper investigates the impact of large language model (LLM)-based coaching interventions on enhancing physical activity and nutritional habits, following motivational interviewing guidelines. By exploring user perceptions through qualitative research involving eight interviews, five key themes emerged: the tension between the need for authenticity and reservations about AI humanization, the desire for personalized coaching and autonomy, the necessity of simplifying daily tasks, the aspiration for self-development, and the need for perceived privacy and trust. The findings reveal that perceptions of LLM-based coaching are multifaceted and cannot be easily classified as purely beneficial or concerning; they vary based on the specific implementation. This complexity indicates that certain aspects can simultaneously present both benefits and risks. The paper discusses theoretical implications and offers practical recommendations to enhance the advantages and mitigate the risks associated with LLM-based coaching interventions.
Conceptual Topic Aggregation.Gutekunst, Klara M.; Dürrschnabel, Dominik; Hirth, Johannes; Stumme, Gerd. In Conceptual Knowledge Structures, P. Cellier, B. Ganter, R. Missaoui (eds.), pp. 3–18. Springer Nature Switzerland, Cham, 2025.
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The vast growth of data has rendered traditional manual inspection infeasible, necessitating the adoption of computational methods for efficient data exploration. Topic modeling has emerged as a powerful tool for analyzing large-scale textual datasets, enabling the extraction of latent semantic structures. However, existing methods for topic modeling often struggle to provide interpretable representations that facilitate deeper insights into data structure and content.
Beyond IP: Amateur Radio PSKReporter as a Crisis Measurement Tool.Alhamwy, Yasin; Hohlfeld, Oliver. In ACM Internet Measurement Conference Poster. 2025.
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Rises for Measuring Local Distributivity in Lattices.Abdulla, Mohammad; Hille, Tobias; Dürrschnabel, Dominik; Stumme, Gerd. In Conceptual Knowledge Structures, P. Cellier, B. Ganter, R. Missaoui (eds.), pp. 392–407. Springer Nature Switzerland, Cham, 2025.
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Distributivity is a well-established and extensively studied notion in lattice theory. In the context of data analysis, particularly within Formal Concept Analysis (FCA), lattices are often observed to exhibit a high degree of distributivity. However, no standardized measure exists to quantify this property. In this paper, we introduce the notion of rises in (concept) lattices as a means to assess distributivity. Rises capture how the number of attributes or objects in covering concepts change within the concept lattice. We show that a lattice is distributive if and only if no non-unit rises occur. Furthermore, we relate rises to the classical notion of meet- and join distributivity. We observe that concept lattices from real-world data are to a high degree join-distributive, but much less meet-distributive. We additionally study how join-distributivity manifests on the level of ordered sets.
Entwicklung und Erprobung eines Qualifizierungskonzepts zur Förderung digitaler Kompetenzen von Beschäftigten aus der Produktion.Landau, E.; Schmidt, L. In Lern- und Arbeitsprozesse im Wandel: Transformation gewerblich-technischer Facharbeit und Berufsbildung, of Berufsbildung, Arbeit und Innovation, M. Becker, R. Dreher, M. Frenz, L. Windelband (eds.), pp. 273–285. wbv, Bielefeld, 2025.
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Ask, Retrieve, Summarize: A Modular Pipeline for Scientific Literature Summarization.Achkar, Pierre; Gollub, Tim; Potthast, Martin. In 1st International Workshop on Scholarly Information Access (SCOLIA 2025) at ECIR, of CEUR Workshop Proceedings, I. Frommholz, P. Mayr, G. Cabanac, S. Verberne, C. K. Kreutz (eds.). CEUR-WS.org, 2025.
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From Keyterms to Context: Exploring Topic Description Generation in Scientific Corpora.Achkar, Pierre; Murugaboopathy, Satiyabooshan; Kreuter, Anne; Gollub, Tim; Potthast, Martin; Campbell, Yuri. In 5th New Frontiers in Summarization Workshop (NewSum 2025) at EMNLP, Y. Dong, W. Xiao, H. Zhang, R. Zhang, O. Ernst, L. Wang, F. Liu (eds.). Association for Computational Linguistics, Hybrid, 2025.
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Data Centers Manufacturing Steel: Rethinking Industrial Networks in the Age of IT.Mitsakis, Nikolaos; Reisacher, Marco; Eichholz, Matthias; Breiting, Yannic; Albrecht, Harald; Blenk, Andreas; Hohlfeld, Oliver. In HotNets, pp. 85–95. ACM, 2025.
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Qualitätsmanagementgerechte Nutzung crowdbasierter Arbeit durch KMU.Lange, Kirsten; Refflinghaus, Robert; Hupe, Anna; Bretschneider, Ulrich. In Neue Methoden und Trends in der Qualitätswissenschaft, S. Bracke, P. Heß (eds.), pp. 209–221. Springer Vieweg, Wiesbaden, Wiesbaden, 2025.
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Im Zuge der wachsenden Digitalisierung ist die Bedeutung von Crowdsourcing in den letzten Jahren deutlich gestiegen. Viele Unternehmen nutzen bereits heute die Beauftragung von (bezahlter) Arbeit über Internet-basierte Plattformen („Crowdworking-Plattformen“). Für Klein- und Mittelständische Unternehmen (KMU) bietet diese neue Form der Arbeitsorganisation allerdings noch erhebliches ungenutztes Potenzial, da die Ausgestaltung der Aufgaben, die Zusammenarbeit mit den Plattformen und der „Crowd“ KMU (noch) vor Herausforderungen stellt. Das vorliegende Papier beschreibt ein Konzept zur Anpassung des Qualitätsmanagements in KMU, um das Potenzial von Crowdworking besser zu nutzen. Es wird aufgezeigt, wie eine qualitätsmanagementgerechte Nutzung der Arbeit von crowdbasierten Mechanismen in KMUs erfolgen kann, um die Erfüllung der Kundenanforderungen weiterhin zu gewährleisten. Die verschiedenen Formen crowdbasierter Mechanismen werden diskutiert. Es werden Hindernisse für KMU bei der Einführung von Crowdsourcing und Strategien zu deren Überwindung aufgezeigt. Ein modulares Referenzprozessmodell für den qualitätsorientierten Einsatz von Crowdworking in KMU wird entwickelt. Darüber hinaus werden konkrete Handlungsempfehlungen zur Anpassung bzw. Ergänzung der Ausgestaltung des Qualitätsmanagements in KMU für den effizienten und effektiven Einsatz von crowdbasierten Mechanismen gegeben.
Special Issue ‘Frictions: Conflicts, Controversies and Design Alternatives in Digital Valuation’. Digital Culture & Society (DCS). Burkhardt, Marcus; Kropf, Jonathan; Ochs, Carsten; Seitz, Tatjana. Vol. 9. transcript, Bielefeld, 2025.
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Team OpenWebSearch at LongEval: Using Historical Data for Scientific Search.Alexander, Daria; Fröbe, Maik; Hendriksen, Gijs; Hagen, Matthias; Hiemstra, Djoerd; Potthast, Martin; Vries, Arjen. In Working Notes of the Conference and Labs of the Evaluation Forum, CLEF 2025, Madrid, Spain, 9-12 September 2025, Vol. 4038 of CEUR Workshop Proceedings, G. Faggioli, N. Ferro, P. Rosso, D. Spina (eds.), pp. 3316–3326. CEUR-WS.org, 2025.
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Introduction.Burkhardt, Marcus; Kropf, Jonathan; Ochs, Carsten; Seitz, Tatjana. In Digital Culture & Society - Special Issue ‚Frictions: Conflicts, Controversies and Design Alternatives in Digital Valuation.‘, M. Burkhardt, J. Kropf, C. Ochs, T. Seitz (eds.), pp. 5–15. transcript, Bielefeld, 2025.
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Power Out, Internet Down? Measuring Internet Resilience in South Africa.Alhamwy, Yasin; Alshebane, Abdalmohimn; Hohlfeld, Oliver. In ACM Internet Measurement Conference Poster. 2025.
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TraffIX: Monitoring Global Internet Traffic Trends by Crawling IXP Statistics.Alhamwy, Yasin; Hohlfeld, Oliver. In ACM SIGCOMM Workshop on Next-Generation Network Observability (NGNO). ACM, 2025.
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T(SN)-Ray: Gauging TAS and PSFP Delays of TSN Switches for Predictable Deterministic Networking.Eppler, Manuel; Osswald, Lukas; Mitsakis, Nikolaos; Blenk, Andreas; Menth, Michael. In Proc. ACM Netw., 3(CoNEXT4), pp. 1–23. 2025.
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Crawling Alice Looking Glasses at IXPs to Quantify BGP Route Diversity.Alhamwy, Yasin; Khoulani, Bashar; Hohlfeld, Oliver. In SIGCOMM (Posters and Demos), pp. 121–123. ACM, 2025.
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Digital Culture & Society (DCS), Vol. 9, Issue 2/2023 - Special Issue ,Frictions: Conflicts, Controversies and Design Alternatives in Digital Valuation’. Burkhardt, Marcus; Kropf, Jonathan; Ochs, Carsten; Seitz, Tatjana. transcript, Bielefeld, 2025.
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Location-based Probabilistic Load Forecasting of Electric Vehicle Charging Sites: Deep Transfer Learning with Multi-Quantile Temporal Convolutional Network.Ali, Mohammad Wazed; Mustafa, Mohammad Asif Ibna; Shuvo, Md. Aukerul Moin; Sick, Bernhard. In International Conference on Architecture of Computing Systems (ARCS), pp. 205–219. Springer, 2025.
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Electrification of vehicles is a potential way of reducing fossil fuel usage and thus lessening environmental pollution. Electric Vehicles (EVs) of various types for different transport modes (including air, water, and land) are evolving. Moreover, different EV user groups (commuters, commercial or domestic users, drivers) may use different charging infrastructures (public, private, home, and workplace) at various times. Therefore, usage patterns and energy demand are very stochastic. Characterizing and forecasting the charging demand of these diverse EV usage profiles is essential in preventing power outages. Previously developed data-driven load models are limited to specific use cases and locations. None of these models are simultaneously adaptive enough to transfer knowledge of day-ahead forecasting among EV charging sites of diverse locations, trained with limited data, and cost-effective. This article presents a location-based load forecasting of EV charging sites using a deep Multi-Quantile Temporal Convolutional Network (MQ-TCN) to overcome the limitations of earlier models. We conducted our experiments on data from four charging sites, namely Caltech, JPL, Office-1, and NREL, which have diverse EV user types like students, full-time and part-time employees, random visitors, etc. With a Prediction Interval Coverage Probability (PICP) score of 93.62%, our proposed deep MQ-TCN model exhibited a remarkable 28.93% improvement over the XGBoost model for a day-ahead load forecasting at the JPL charging site. By transferring knowledge with the inductive Transfer Learning (TL) approach, the MQ-TCN model achieved a 96.88% PICP score for the load forecasting task at the NREL site using only two weeks of data.
The German Commons -- 154 Billion Tokens of Openly Licensed Text for German Language Models.Gienapp, Lukas; Schröder, Christopher; Schweter, Stefan; Akiki, Christopher; Schlatt, Ferdinand; Zimmermann, Arden; Genêt, Phillipe; Potthast, Martin. In CoRR, abs/2510.13996. 2025.
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Die Rechtmäßigkeit der Verarbeitung von öffentlichen personenbezogenen Daten aus dem Internet.Gilga, C. In Die Rechtmäßigkeit der Verarbeitung von öffentlichen personenbezogenen Daten aus dem Internet. Web-Monitoring gemäß der Datenschutz-Grundverordnung. Springer Vieweg, Wiesbaden, 2025.
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Continuous value shaping: A boundary concept for innovating service innovation approaches.Böhmann, Tilo; Roth, Angela; Satzger, Gerhard; Benz, Carina; Beverungen, Daniel; Boes, Andreas; Breidbach, Christoph; Gersch, Martin; Gudergan, Gerhard; Hogreve, Jens; Kurtz, Christian; Langes, Barbara; Leimeister, Jan Marco Leimeister; Lewandowski, Tom; Meiren, Thomas; Nägele, Rainer; Paluch, Stefanie; Peters, Christoph; Poeppelbuss, Jens; Robra‑Bissantz, Susanne; Schultz, Carsten; Schumann, Jan H.; Wirtz, Jochen; Wünderlich, Nancy V. In Electronic Markets, 35(27), p. 20. 2025.
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Technological advancements and evolving value orientations reshape future value creation and pose new requirements for service innovation. While a variety of disciplines are developing new approaches to drive service innovation, this is primarily done in isolation and generates only fragmented solutions. Sociological theory has proposed “boundary objects” as an effective umbrella for communication and cooperation among communities. Therefore, we introduce continuous value shaping (CVS) as a boundary object describing service innovation approaches along five principles. We reflect on this concept through the different disciplinary lenses of researchers in service marketing, information systems, service engineering, sociology of work, and innovation management. These perspectives highlight how the CVS principles already connect to discourses within the individual disciplines. However, the CVS concept will not only provide an umbrella to embrace existing activities in different academic disciplines. It also assists to identify research themes that will benefit from uniting the power of these disciplines, and it can serve as an integrating framework to conceptualize complex service innovation approaches. Thus, the CVS concept should guide both researchers and practitioners to develop and implement novel innovation and transformation efforts—in and across organizations.
Unlocking Business Value with Generative AI: Balancing Co-Creation and Co-Destruction in Knowledge Work.Bruhin, Olivia; Ebel, Philipp; Bauer-Hänsel, Ingrid. In Proceedings in the Thirty-Third European Conference on Information Systems (ECIS). Amman, Jordan, 2025.
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This study investigates the dual impact of Generative AI tools on business value in knowledge work, focusing on value co-creation and co-destruction. Drawing from three case studies across diverse industries and over a year of GenAI integration, we analyzed qualitative insights from 15 industry experts. We contextualized our insights using the value co-creation and co-destruction framework and the value discipline lens. Our findings reveal GenAI’s nuanced role in enhancing operational efficiency, enabling innovative solutions through supporting complex problem-solving and more creative employee engagement, and strengthening customer intimacy through mechanisms such as depth or availability of the interaction. However, risks such as over-reliance on AI, quality concerns, and the erosion of critical human judgment skills complicate its adoption. By balancing these perspectives and explaining the value creation logic, this study provides a nuanced understanding of GenAI’s role in shaping business value, offering actionable recommendations for effective and sustainable integration.
Tangible LLMs: Tangible Sense-Making For Trustworthy Large Language Models.Angelini, Leonardo; Klumbyte, Goda; Daniel, Maxime; Couture, Nadine; Mugellini, Elena; Draude, Claude. In Proceedings of the Nineteenth International Conference on Tangible, Embedded, and Embodied Interaction, of TEI ’25, pp. 1–5. Association for Computing Machinery, New York, NY, USA, 2025.
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The goal of this studio is to explore and discuss the potential benefits and the open challenges of giving a physical form to Artificial Intelligence (AI), towards the definition of tangible, or graspable AI. In this studio, we want to carry out a hands-on exploration of the potential of tangible interaction to help people grasp how transformer-based AI models, such as Large Language Models (LLMs), make predictions. Starting from a basic understanding of the core mechanisms of these models – input/output embedding, positional encoding, self-attention, and multi-head attention, we will explore how tangible interaction properties, such as data physicalization and tangible manipulation, may help designing graspable interfaces for facilitating the understanding and control of LLMs. Fostering AI transparency and human agency, we believe that tangible interaction may help increase the trustworthiness of Large Language Models. Through brainstorming and prototyping activities, we aim at identifying effective tangible representations and manipulation techniques that will help users grasp and trust LLMs.
AI-Powered Teams: How the Usage of Generative AI Tools Enhances Knowledge Transfer and Knowledge Application in Knowledge-Intensive Teams.Bruhin, Olivia; Bumann, Luc; Ebel, Philipp. In 20th International Conference on Wirtschaftsinformatik (WI). Münster, Germany, 2025.
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Generative Artificial Intelligence (GenAI) tools, including ChatGPT and GitHub Copilot, are revolutionizing software development by enhancing knowledge sharing and application. This study investigates the role of GenAI tools in software development teams, focusing on its impact on knowledge management processes and team performance. Through an empirical study with 80 software developers, we examine how GenAI usage influences the key knowledge management processes, knowledge transfer and application, and its subsequent effect on team performance. Our findings indicate that GenAI tools significantly enhance team dynamics, fostering efficient knowledge exchange and boosting productivity. In our study, we highlight the importance of integrating GenAI thoughtfully to maximize collaborative benefits, emphasizing its role as a catalyst for innovation and efficiency in knowledge-intensive environments.
ReNeuIR at SIGIR 2025: The Fourth Workshop on Reaching Efficiency in Neural Information Retrieval.Bruch, Sebastian; Fröbe, Maik; Hagen, Tim; Nardini, Franco Maria; Potthast, Martin. In 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), N. Ferro, M. Maistro, G. Pasi, O. Alonso, A. Trotman, S. Verberne (eds.), pp. 4153–4156. ACM, New York, 2025.
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UWBike: Global Bicycle Positioning System Using a Single Ultra-Wideband Reference Point.Mathuseck, L.; Busch, L.; Götz, J.; Heinisch, J. S.; David, K. In Companion of the 2025 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp Companion ’25). 2025.
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Axioms for Retrieval-Augmented Generation.Merker, Jan Heinrich; Fröbe, Maik; Stein, Benno; Potthast, Martin; Hagen, Matthias. In 15th International Conference on Innovative Concepts and Theories in Information Retrieval (ICTIR 2025), H. Zamani, L. Dietz, B. Piwowarski, S. Bruch (eds.), pp. 67–77. ACM, New York, 2025.
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Efficient Bayesian Updates for Deep Active Learning via Laplace Approximations.Huseljic, Denis; Herde, Marek; Rauch, Lukas; Hahn, Paul; Huang, Zhixin; Kottke, Daniel; Vogt, Stephan; Sick, Bernhard. In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD), pp. 20–35. Springer, 2025.
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Deep active learning (AL) selects batches of instances for annotation to avoid retraining deep neural networks (DNNs) after each new label. Employing a naive top-b selection can result in a batch of redundant (similar) instances. To address this, various AL strategies employ clustering techniques that ensure diversity within a batch. We approach this issue by substituting the costly retraining with an efficient Bayesian update. Our proposed update represents a second-order optimization step using the Gaussian posterior from a last-layer Laplace approximation. Thereby, we achieve low computational complexity by computing the inverse Hessian in closed form. We demonstrate that in typical AL settings, our update closely approximates retraining while being considerably faster. Leveraging our update, we introduce a new framework for batch selection through sequential construction, updating the DNN after each label acquisition. Furthermore, we incorporate our update into a look-ahead selection strategy as a feasible upper baseline approximating optimal batch selection. Our results highlight the potential of efficient updates to advance deep AL research.
Design Pattern Development for Online Labor Platforms: Addressing Certificate Forgery Through Blockchain-Based Solutions.Hupe, Anna; Bretschneider, Ulrich. In International Conference of Information Systems (ICIS). Nashville, USA, 2025.
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Outsourcing tasks via online labor platforms (OLPs) has become a widely adopted strategy for companies to delegate activities beyond their core competencies to external gig workers, enabling rapid and cost-effective task execution. Increasing task complexity and required expertise lead to higher payment, incentivizing gig workers to exaggerate their qualifications and engage in certificate forgery. Such misrepresentations often result in inadequate task outcomes. Existing approaches focus on detecting forgeries through governance mechanisms; they address results rather than underlying causes and cannot provide complete security. Our research, in contrast, addresses the causes of certificate forgery on OLPs. Following a design science research approach and based on a literature review and interviews, we identify challenges, derive requirements and design pattern elements, and propose a blockchain-based design pattern to mitigate credential fraud. Our research contributes to reducing information asymmetries between gig workers and organizations, thereby enhancing task quality, improving trust, and commitment on OLPs.
Artificial Intelligence as a Hybrid Life Form. On the Critique of Cybernetic Expansion.Lamla, Jörn. In Algorithmic Transformation and Diffusion of Power: Trust, Conflict, Uncertainty, and Control, I. Spiecker gen. Döhmann, C. Burchard (eds.), pp. 331–353. Nomos, Baden-Baden, 2025.
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Improving Fast 6D Pose Estimation with Adaptive Model Fusion.Hubert, Andreas; Guo, Chenxi; Doll, Konrad; Sick, Bernhard. In International Conference on Machine Learning and Intelligent Systems Engineering (MLISE), pp. 58–63. IEEE, 2025.
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Object tracking in manual assembly cells presents unique challenges due to the wide variation in motion speeds, ranging from slow, precise movements to rapid changes of direction. Traditional tracking models face a fundamental trade-off: models specialized for slow motion achieve high accuracy at low speeds but fail at higher velocities, while fast-motion models track rapid movements effectively but lose precision for slow moving objects. To address this limitation, we propose an Adaptive Fusion Tracker (AFT) approach that combines a Slow Motion Tracker (SMT) and a Fast Motion Tracker (FMT) to improve tracking robustness across diverse motion ranges. Our experimental evaluation demonstrates that AFT configurations, fusing SMT and FMT results, enhance performance beyond the individual models' operational limits. Among them, AFT with averages the results by weight consistently achieves the highest tracking accuracy, doubling the performance for certain tracking motion speeds, while a state-based AFT offers a computationally efficient alternative. These findings suggest that adaptive fusion extends the effective operational range of tracking models, making them more reliable for real-world applications.
How Siemens Empowered Workforce Re- and Upskilling Through Digital Learning.Freise, Leonie Rebecca; Ritz, Eva; Bretschneider, Ulrich; Rietsche, Roman; Beitinger, Gunter; Leimeister, Jan Marco. In MIS Quarterly Executive, 24(3), p. Article 4. 2025.
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The accelerating digital transformation of manufacturing is enhancing automation and production efficiency while requiring employees to develop new skills to meet evolving demands. This case study examines how Siemens embedded a human-centric, bottom-up approach to empower employee re- and upskilling through innovative digital learning. Aligned with Siemens’s actions, we present a four-phase model on leveraging information systems to address skill gaps, enhance adaptability and tackle re- and upskilling challenges. We also provide five recommendations to help organizations foster lifelong learning in dynamic manufacturing environments.
Freiheit in digitalen Infrastrukturen, Reihe Privatheit und Selbstbestimmung in der digitalen Welt. Friedewald, M.; Roßnagel, A.; Karaboga, M.; Geminn, C. Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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Europäisches Datenrecht. Geminn, Christian; Johannes, Paul. Nomos, 2025.
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Industrial Views on DevOps Adoption Before and After Implementation: A Qualitative Comparison.Copei, Sebastian; Hohlfeld, Oliver; Kosiol, Jens. In ECSA (Tracks and Workshops), Vol. 15982 of Lecture Notes in Computer Science, D. Bianculli, H. Sartaj, V. Andrikopoulos, C. Pautasso, T. Mikkonen, J. Pérez, T. Bures, M. D. Sanctis, H. Muccini, E. Navarro, M. Soliman, U. Zdun (eds.), pp. 202–211. Springer, 2025.
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Kursorischer Vergleich der Übersetzungsdienste ChatGPT, Google Translate, DeepL und eTranslation. Hagen, Tim; Potthast, Martin. Universitätsbibliothek Kassel, 2025.
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Code and Craft: How Generative AI Tools Facilitate Job Crafting in Software Development.Freise, Leonie Rebecca; Bruhin, Olivia; Ritz, Eva; Li, Mahei Manhai; Leimeister, Jan Marco. In 58th Hawaii International Conference on System Sciences (HICSS). Hawaii, USA, 2025.
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The rapid evolution of the software development industry challenges developers to manage their diverse tasks effectively. Traditional assistant tools in software development often fall short of supporting developers efficiently. This paper explores how generative artificial intelligence (GAI) tools, such as Github Copilot or ChatGPT, facilitate job crafting—a process where employees reshape their jobs to meet evolving demands. By integrating GAI tools into workflows, software developers can focus more on creative problem-solving, enhancing job satisfaction, and fostering a more innovative work environment. This study investigates how GAI tools influence task, cognitive, and relational job crafting behaviors among software developers, examining its implications for professional growth and adaptability within the industry. The paper provides insights into the transformative impacts of GAI tools on software development job crafting practices, emphasizing their role in enabling developers to redefine their job functions.
TIREx Tracker: The Information Retrieval Experiment Tracker.Hagen, Tim; Fröbe, Maik; Merker, Jan Heinrich; Scells, Harrisen; Hagen, Matthias; Potthast, Martin. In 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), N. Ferro, M. Maistro, G. Pasi, O. Alonso, A. Trotman, S. Verberne (eds.), pp. 3764–3771. ACM, New York, 2025.
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Rethinking technology regulation in the age of AI risks.Currie, Wendy L; Schlagwein, Daniel; Leimeister, Jan Marco; Willcocks, Leslie. In Journal of Information Technology (JIT), 40(3), p. 10. 2025.
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This paper argues that artificial intelligence exposes the shortcomings of traditional regulatory paradigms, challenging Easterbrook’s ‘Law of the Horse’ view that general legal principles suffice. AI’s opacity, autonomy, and systemic risks demand risk-informed, technology-specific governance. We identify the pacing problem, where innovation outstrips regulatory capacity, and propose a tripartite framework distinguishing functional, structural, and relational risks. Comparative analysis of EU, US, UK, and Chinese approaches highlights divergent logics of precaution, market oversight, hybrid flexibility, and state control. Effective governance requires embedding risk into policy design through adaptive, proportionate, and harmonised mechanisms, balancing innovation with accountability. The paper underscores the urgency of global coordination and calls for interdisciplinary IS research to inform anticipatory, participatory, and ethically grounded regulation.
Towards Safer Incentive-Based Crowdfunding: A Blockchain-based Approach.Hupe, Anna; Bretschneider, Ulrich. In International Conference on Information Systems (ICIS). Nashville, USA, 2025.
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Crowdfunding has become an increasingly important funding mechanism, with transaction volumes growing steadily in recent years. However, significant information asymmetries between backers and project initiators challenge its sustainable development, particularly in incentive-based crowdfunding. Backers lack critical insights into initiators’ motives, capabilities, and project specifics due to the anonymous nature of these interactions. Using principal-agent theory, we analyze existing problems between backers and project initiators and highlight the information asymmetries between them. These asymmetries result in backers suffering from adverse selection and moral hazard, threatening campaign success. To address these problems, we propose integrating blockchain technology into crowdfunding campaigns. Our results show that blockchain contributes to increased transparency, security, traceability, and decentralization. Based on a literature review and expert interviews, we examine the technological potential to reduce information asymmetries, strengthen trust between backers and project initiators, and contribute to improved governance mechanisms and innovative ways of implementing crowdfunding more securely.
AI Meets Management: Redefining Leadership and Managerial Roles in the New Era.Chowdhury, Ishraque Hossain; Aurora, S.R.; Chowdhury, Soumyadeb; Elgayeva, Kate; Janson, Andreas; Jarrahi, Mohammad Hossein; Krakowski, Sebastian; Nguyen, Minh Thu Nhien; Van den Abeele, Jeriek. In Academy of Management Meeting (AOM). Copenhagen, Denmark, 2025.
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Advancements in artificial intelligence (AI) have continued to change many aspects of organizations, including leadership and managerial roles. Emerging technologies within AI, for example, natural language processing , machine learning, data mining, and Generative AI (GenAI) can be used for innovative ways to transform managerial practices, while at the same time, posing new questions about the current ways things are done at the leadership and managerial levels. This panel symposium examines the potential of AI, especially GenAI, in critically questioning current leadership and managerial practices as well as improving decision-making and other organizational processes. We bring together leading scholars and practitioners to provide insights into how GenAI may shape these practices, what changes may occur in the organization due to the widespread use of GenAI, and how we can ride these waves into the future.
Eingriffe in Informationsrechte: Staatliche Verantwortung bei Datenschutz und IT-Sicherheit. Gutjahr, A.; Hornung, G.; Schaller, T.; Spiecker gen. Döhmann, I. 2025.
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Introduction to Posthuman Convergences.Klumbytė, Goda; Jones, Emily; Braidotti, Rosi. In Posthuman Convergences: Transdisciplinary Methods and Practices, G. Klumbytė, E. Jones, R. Braidotti (eds.), pp. 1–25. Edinburgh University Press, Edinburgh, 2025.
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Efficient Management of LLM-Based Coaching Agents’ Reasoning While Maintaining Interaction Quality and Speed.Göldi, Andreas; Rietsche, Roman; Ungar, Lyle. In Conference on Human Factors in Computing Systems (CHI). Yokohama, Japan, 2025.
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LLM-based agents improve upon standalone LLMs, which are optimized for immediate intent-satisfaction, by allowing the pursuit of more extended objectives, such as helping users over the long term. To do so, LLM-based agents need to reason before responding. For complex tasks like personalized coaching, this reasoning can be in- formed by adding relevant information at key moments, shifting it in the desired direction. However, the pursuit of objectives beyond interaction quality may compromise this very quality. Moreover, as the depth and informativeness of reasoning increase, so do the number of tokens required, leading to higher latency and cost. This study investigates how an LLM-based coaching agent can adjust its reasoning depth using a discrepancy mechanism that signals how much reasoning effort to allocate based on how well the objective is being met. Our discrepancy-based mechanism constrains reasoning to better align with alternative objectives, reducing cost roughly tenfold while minimally impacting interaction quality.
Posthuman Convergences: Transdisciplinary Methods and Practices.Klumbytė, Goda; Jones, Emily; Braidotti, Rosi. p. 408. Edinburgh University Press, Edinburgh, 2025, August.
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Influence of the Pedestrian Geometry in Collision Avoidance Systems.Götz, J.; Mathuseck, L.; Busch, L.; David, K. In IEEE Transactions on Intelligent Vehicles. 2025.
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„Mit einer KI bleibe ich in dem Kosmos an Informationen gefangen, die ich schon habe.“ Im Gespräch mit dem Produktbewerter Holger Brackemann von der Stiftung Warentest.Krenn, Karoline; Kropf, Jonathan. In Dynamiken digitaler Bewertung. Über Gestaltungsspielräume in Infrastrukturen – von KI bis Queering, K. Krenn, J. Kropf, S. Laser, C. Ochs (eds.), pp. 119–133. Springer VS, Wiesbaden, 2025.
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Freiheit in digitalen Infrastrukturen – eine Einleitung in den Band.Friedewald, M.; Roßnagel, A.; Geminn, C.; Karaboga, M. In Freiheit in digitalen Infrastrukturen, Reihe Privatheit und Selbstbestimmung in der digitalen Welt, pp. 11–20. Nomos Verlagsgesellschaft, Baden-Baden, 2025.
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Conclusion: (Infra)Structures for the Convergences.Klumbytė, Goda; Jones, Emily; Braidotti, Rosi. In Posthuman Convergences: Transdisciplinary Methods and Practices, G. Klumbytė, E. Jones, R. Braidotti (eds.), pp. 365–278. Edinburgh University Press, Edinburgh, 2025.
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2024[ to top ]

A Repository for Formal Contexts.Hanika, Tom; Jäschke, Robert. In Proceedings of the 1st International Joint Conference on Conceptual Knowledge Structures. 2024.
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Data is always at the center of the theoretical development and investigation of the applicability of formal concept analysis. It is therefore not surprising that a large number of data sets are repeatedly used in scholarly articles and software tools, acting as de facto standard data sets. However, the distribution of the data sets poses a problem for the sustainable development of the research field. There is a lack of a central location that provides and describes FCA data sets and links them to already known analysis results. This article analyses the current state of the dissemination of FCA data sets, presents the requirements for a central FCA repository, and highlights the challenges for this.
Reproducibility and Geometric Intrinsic Dimensionality: An Investigation on Graph Neural Network Research.Hille, Tobias; Stubbemann, Maximilian; Hanika, Tom. In Transactions on Machine Learning Research. 2024.
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Cognitive Load Theory Approach to Hybrid Intelligence: Tackling the Dual Aim of Task Performance and Learning.Bittner, Eva A. C.; Oeste-Reiß, Sarah; Kirmse, Rosemarie; Poser, Mathis; Wiethof, Christina. In Forty-Fifth International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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Knowledge workers in information-rich work environments face cognitive challenges as they must deal with multitasking, interruptions, and time pressure. In domains like customer support with high turnover rates and increasingly diverse and complex products, employees need to rapidly develop from novices to experts while showing high task performance. The objective of this paper is to develop design knowledge for hybrid intelligence systems that tackle the dual aim of task performance and learning in knowledge work. We follow a design science research approach and build on theoretical and empirical knowledge on cognitive load theory. We propose a task-user matrix that classifies expertise and task difficulty to identify cognitive challenges. We develop four intervention strategies in the form of design patterns specified through design principles to address these challenges in system design. A pattern evaluation with system developers initially supports the effectiveness, plausibility and feasibility of our patterns.
AI Literacy and its Implications for Prompt Engineering Strategies.Knoth, Nils; Tolzin, Antonia; Janson, Andreas; Leimeister, Jan Marco. In Computers and Education: Artificial Intelligence, 6(June). 2024.
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Artificial intelligence technologies are rapidly advancing. As part of this development, large language models (LLMs) are increasingly being used when humans interact with systems based on artificial intelligence (AI), posing both new opportunities and challenges. When interacting with LLM-based AI system in a goal-directed manner, prompt engineering has evolved as a skill of formulating precise and well-structured instructions to elicit desired responses or information from the LLM, optimizing the effectiveness of the interaction. However, research on the perspectives of non-experts using LLM-based AI systems through prompt engineering and on how AI literacy affects prompting behavior is lacking. This aspect is particularly important when considering the implications of LLMs in the context of higher education. In this present study, we address this issue, introduce a skill-based approach to prompt engineering, and explicitly consider the role of non-experts' AI literacy (students) in their prompt engineering skills. We also provide qualitative insights into students’ intuitive behaviors towards LLM-based AI systems. The results show that higher-quality prompt engineering skills predict the quality of LLM output, suggesting that prompt engineering is indeed a required skill for the goal-directed use of generative AI tools. In addition, the results show that certain aspects of AI literacy can play a role in higher quality prompt engineering and targeted adaptation of LLMs within education. We, therefore, argue for the integration of AI educational content into current curricula to enable a hybrid intelligent society in which students can effectively use generative AI tools such as ChatGPT.
Konsum als holistische Perspektive. Wie sich Sozial- und Verbraucherpolitik als Konsumpolitik zukunftsweisend zusammendenken lassen.Lamla, Jörn. In Verbrauchersozialpolitik. Über sozialpolitische Funktionen der Verbraucherpolitik und vergleichbare Vermischungen, K.-U. Hellmann (ed.), pp. 135–159. Nomos, 2024.
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Reliable Probabilistic Human Trajectory Prediction for Autonomous Applications.Hetzel, Manuel; Reichert, Hannes; Doll, Konrad; Sick, Bernhard. In Workshop on Uncertainty Quantification for Computer Vision (UNCV), ECCV, pp. 135–152. Springer, 2024.
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Autonomous systems, like vehicles or robots, require reliable, accurate, fast, resource-efficient, scalable, and low-latency trajectory predictions to get initial knowledge about future locations and movements of surrounding objects for safe human-machine interaction. Furthermore, they need to know the uncertainty of the predictions for risk assessment to provide safe path planning. This paper presents a lightweight method to address these requirements, combining Long Short-Term Memory and Mixture Density Networks. Our method predicts probability distributions, including confidence level estimations for positional uncertainty to support subsequent risk management applications and runs on a lowpower embedded platform. We discuss essential requirements for human trajectory prediction in autonomous vehicle applications and demonstrate our method’s performance using multiple traffic-related datasets. Furthermore, we explain reliability and sharpness metrics and show how important they are to guarantee the correctness and robustness of a model’s predictions and uncertainty assessments. These essential evaluations have so far received little attention for no good reason. Our approach focuses entirely on real-world applicability. Verifying prediction uncertainties and a model’s reliability are central to autonomous realworld applications. Our framework and code are available at: https://github.com/kav-institute/mdn_trajectory_forecasting.
Professionalisierung im Verbraucher:innenschutz. Herausforderungen, Möglichkeiten und Grenzen.Lamla, Jörn. In Professionalisierung im Verbraucherschutz. Jahrbuch Konsum & Verbraucherwissenschaften., C. Bala, et al. (eds.). Düsseldorf, 2024.
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Systeme zur Angriffserkennung nach dem neuen EU-Cybersicherheitsrahmen – Hochrisiko-Systeme der KI-Verordnung?Kohpeiß, M.; Schaller, T. In Computer und Recht, pp. 22–29. 2024.
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Towards Effective AI-Driven Reading Assistants: A Design Science Exploration. Thirty-Second European Conference on Information Systems.Hänel, Martin; Wambsganss, Thiemo; Söllner, Matthias. ECIS 2024 Proceedings, 2024.
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Recent advancements in AI have led to the introduction of tools that support researchers in scientific reading. Tools such as SciSpace have come to the forefront to assist users in reading scientific texts. However, there is an insufficient theoretical foundation on how to design these reading assistants as well as no evidence of their effects, especially given the recent progress. Specifically, past literature lacks insights on evaluated user requirements and design principles for the design of computer-assisted reading systems. Addressing these challenges, we draw on Design Science Research (DSR) to derive and evaluate a set of five design principles for computer-assisted reading systems. Building on flow theory as our theoretical lens, we develop and perform a first proof-of-concept evaluation of a prototypical implementation of our principles as a computer-assisted reading artifact. Our design principles support researchers and practitioners on how to design, evaluate, and compare their AI-reading tools more effectively.
Lagekartierung in der Katastrophe – Der Einsatz künstlicher Intelligenz zur Analyse von Erdbeobachtungs- und Internetdaten im AIFER-Projekt aus Sicht der Endanwenderinnen und -anwender und des Rechts.Gilga, C.; Knoche, L. In Forschung für den Bevölkerungsschutz, B. für Bevölkerungsschutz und Katastrophenhilfe (ed.), pp. 95–97. Frankfurt am Main, 2024.
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Workshop on Interactive Adaptive Learning (IAL), ECML PKDD. Bunse, Mirko; Herde, Marek; Krempl, Georg; Lemaire, Vincent; Tharwat, Alaa; Pham, Minh Tuan; Saadallah, Amal. In Vol. 3770 of CEUR Workshop Proceedings. 2024.
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Divergent selection in a Mediterranean pine on local spatial scales.Budde, Katharina B.; Rellstab, Christian; Heuertz, Myriam; Gugerli, Felix; Hanika, Tom; Verdú, Miguel; Pausas, Juli G.; González-Martínez, Santiago C. In Journal of Ecology, 112(2). 2024.
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Abstract The effects of selection on an organism's genome are hard to detect on small spatial scales, as gene flow can swamp signatures of local adaptation. Therefore, most genome scans to detect signatures of environmental selection are performed on large spatial scales; however, divergent selection on the local scale (e.g. between contrasting soil conditions) has also been demonstrated, in particular for herbaceous plants. Here, we hypothesised that in topographically complex landscapes, microenvironment variability is strong enough to leave a selective footprint in the genomes of long-lived organisms. To test this, we investigated paired south- versus north-facing Pinus pinaster stands on the local scale, with trees growing in close vicinity (≤820 m distance between paired south- and north-facing stands), in a Mediterranean mountain area. While trees on north-facing slopes experience less radiation, trees on south-facing slopes suffer from especially harsh conditions, particularly during the dry summer season. Two outlier analyses consistently revealed five putatively adaptive loci (out of 4034), in candidate genes two of which encoded non-synonymous substitutions. Additionally, one locus showed consistent allele frequency differences in all three stand pairs indicating divergent selection despite high gene flow on the local scale. Permutation tests demonstrated that our findings were robust. Functional annotation of these candidate genes revealed biological functions related to abiotic stress response, such as water availability, in other plant species. Synthesis. Our study highlights how divergent selection in heterogeneous microenvironments shapes and maintains the functional genetic variation within populations of long-lived forest tree species, being the first to focus on adaptive genetic divergence between south- and north-facing slopes within continuous forest stands. This is especially relevant in the current context of climate change, as this variation is at the base of plant population responses to future climate.
Towards Effective AI-Driven Reading Assistants: A Design Science Exploration.Hänel, M.; Wambsganss, T.; Söllner, M. In Thirty-Second European Conference on Information Systems (ECIS 2024), pp. 1–16. 2024.
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The Geometric Structure of Topic Models.Hirth, Johannes; Hanika, Tom. arXiv, 2024.
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Digital Culture & Society - Special Issue ‚Frictions: Conflicts, Controversies and Design Alternatives in Digital Valuation.‘. Burkhardt, Marcus; Kropf, Jonathan; Ochs, Carsten; Seitz, Tatjana. transcript, Bielefeld, 2024.
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Ordinal motifs in lattices.Hirth, Johannes; Horn, Viktoria; Stumme, Gerd; Hanika, Tom. In Information Sciences, 659, p. 120009. 2024.
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Employee acceptance of digital transformation strategies: A paradox perspective.Klein, S. P.; Spieth, P.; Söllner, M. In Journal of Product Innovation Management, 41(5), pp. 999–1021. 2024.
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Consumption and Conventions: Valuation, Recommendation, and the Quality of Goods in Digital Age.Lamla, Jörn. In Handbook of Economics and Sociology of Conventions, R. Diaz-Bone, G. Larquier (eds.), pp. 1–19. Springer, Cham, 2024.
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PrOuD: Probabilistic Outlier Detection Solution for Time Series Analysis on Real-world Photovoltaic Inverters.He, Yujiang; Huang, Zhixin; Vogt, Stephan; Sick, Bernhard. In Energies (MDPI), 17(1), p. 64. MDPI, 2024.
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Anomaly detection methods applied to time series are mostly viewed as a black box, which solely provides a deterministic answer to the detected target. Without a convincing explanation, domain experts can hardly trust the detection results and conduct a further time series diagnosis in real-world applications. To overcome the challenge, we mathematically analyzed the sources of anomalies and novelties in multivariate time series as well as their relationships from the perspective of Gaussian-distributed non-stationary noise. Furthermore, we proposed mathematical methods to generate artificial time series and synthetic anomalies, with the goal of solving the problem that it is difficult to train and evaluate models in real-world applications due to the lack of sufficient data. In addition, we designed extbfProbabilistic extbfOutlier extbfDetection (PrOuD), which is a general solution to provide interpretable detection results to assist domain experts in time series analysis. PrOuD can convert a predictive uncertainty of a trained model about a time series value into an estimated uncertainty of the detected outlier through Monte Carlo Estimation. The experimental results obtained on both artificial time series and real-world photovoltaic inverter data demonstrated that the proposed solution could detect emerging anomalies accurately and quickly. The implemented PrOuD demo case shows the potential to makes the detection results of the existing detection methods more convincing so that domain experts can more efficiently complete their tasks, such as time series diagnosis and anomalous pattern clustering.
EmotionAware 2024: Eighth International Workshop on Emotion Awareness for Pervasive Computing Beyond Traditional Approaches-Welcome and Committees.David, Klaus; Dobbins, Chelsea; Heinisch, Judith; Okoshi, Tadashi; Dupré, Damien; Gaggioli, Andrea; Gao, Nan; Peltonen, Ella; Sugaya, Midori; Tag, Benjamin; Van Laerhoven, Kristof; Mariani, Stefano; Sigg, Stephan. In 2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2024, pp. 23–24. Institute of Electrical and Electronics Engineers Inc., 2024.
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Enhancing Multi-objective Optimisation Through Machine Learning-Supported Multiphysics Simulation.Botache, Diego; Decke, Jens; Ripken, Winfried; Dornipati, Abhinay; Götz-Hahn, Franz; Ayeb, Mohamed; Sick, Bernhard. In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD), pp. 297–312. Springer, 2024.
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This paper presents a methodological framework for training, self-optimising, and self-organising surrogate models to approximate and speed up multiobjective optimisation of technical systems based on multiphysics simulations. At the hand of two real-world datasets, we illustrate that surrogate models can be trained on relatively small amounts of data to approximate the underlying simulations accurately. Including explainable AI techniques allow for highlighting feature relevancy or dependencies and supporting the possible extension of the used datasets. One of the datasets was created for this paper and is made publicly available for the broader scientific community. Extensive experiments combine four machine learning and deep learning algorithms with an evolutionary optimisation algorithm. The performance of the combined training and optimisation pipeline is evaluated by verifying the generated Pareto-optimal results using the ground truth simulations. The results from our pipeline and a comprehensive evaluation strategy show the potential for efficiently acquiring solution candidates in multiobjective optimisation tasks by reducing the number of simulations and conserving a higher prediction accuracy, i.e., with a MAPE score under 5% for one of the presented use cases.
Erprobung eines innovativen Unternehmensberatungskonzepts für neue Technologien am Beispiel von 3D-Scannern und -Druckern.Landau, E.; Schmidt, L. In Arbeitswissenschaft in-the-loop - Mensch-Technologie-Integration und ihre Auswirkung auf Mensch, Arbeit und Arbeitsgestaltung: 70. Kongress der Gesellschaft für Arbeitswissenschaft (Stuttgart 2024), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (H.3.5). GfA-Press, Sankt Augustin, 2024.
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Im Beitrag wird der Entwicklungsstand eines Unternehmensberatungskonzepts für kleine und mittlere Unternehmen (KMU) aus Produktion und Handwerk am Beispiel von 3D-Scannern und -Druckern vorgestellt. Ziel ist es, den Beschäftigten ein selbstständiges Austesten neuer Technologien anhand praxisnaher Anwendungsfälle zu ermöglichen. Dabei wurde in einem Mixed-Method-Design untersucht, ob die pädagogischen und didaktischen Werthaltungen bzw. Überzeugungen, u. a. Anchored Instruction und Cognitive Apprenticeship, umgesetzt und die Lernziele erreicht wurden. Es werden erste Ergebnisse der Evaluation des Konzepts aus einer Pilotstudie (N = 5) vorgestellt, diskutiert und Maßnahmen für die iterative Überarbeitung abgeleitet.
Enhancing Multi-Objective Optimization through Machine Learning-Supported Multiphysics Simulation.Botache, Diego; Decke, Jens; Ripken, Winfried; Dornipati, Abhinay; Götz-Hahn, Franz; Ayeb, Mohamed; Sick, Bernhard. In arXiv e-prints, p. arXiv:2309.13179v2. 2024.
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This paper presents a methodological framework for training, self-optimising, and self-organising surrogate models to approximate and speed up multiobjective optimisation of technical systems based on multiphysics simulations. At the hand of two real-world datasets, we illustrate that surrogate models can be trained on relatively small amounts of data to approximate the underlying simulations accurately. Including explainable AI techniques allow for highlighting feature relevancy or dependencies and supporting the possible extension of the used datasets. One of the datasets was created for this paper and is made publicly available for the broader scientific community. Extensive experiments combine four machine learning and deep learning algorithms with an evolutionary optimisation algorithm. The performance of the combined training and optimisation pipeline is evaluated by verifying the generated Pareto-optimal results using the ground truth simulations. The results from our pipeline and a comprehensive evaluation strategy show the potential for efficiently acquiring solution candidates in multiobjective optimisation tasks by reducing the number of simulations and conserving a higher prediction accuracy, i.e., with a MAPE score under 5% for one of the presented use cases.
Let’s Play with AI! A 2x2 Experiment on Collaborative vs. Competitive Game Elements for Pedagogical Conversational Agents.Khosrawi-Rad, Bijan; Keller, Paul; Grogorick, Linda; Benner, Dennis; Janson, Andreas; Robra-Bissantz, Susanne. In Pre-ICIS SIG Services Workshop on Synergizing Service Ecosystems with AI. Bangkok, Thailand, 2024.
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Technological advances in generative artificial intelligence (GAI) have increased the relevance of pedagogical conversational agents (PCAs) like chatbots to support students. Despite their potential for learning as a service, PCAs are rarely used by educational institutions. They often neglect the benefits of group learning, like collaborative problem- solving, and insufficiently address learners’ motivational challenges in digital environments. To tackle these issues, we designed and evaluated a gamified PCA for information systems (IS) education with collaborative and competitive group learning capabilities. We investigated the effects of collaborative and competitive elements in PCA design using a 2x2 experiment (n = 120). Our findings show that collaborative game elements foster learners’ motivation and highlight the PCA’s role as a group learning moderator. This study contributes new knowledge on GAI in IS education, meaningful gamification in the PCA context, and computer-supported collaborative learning.
Drowning in emails: investigating email classes and work stressors as antecedents of high email load and implications for well-being.Kern, Marcel; Ohly, Sandra; Duranova, Lenka; Friedrich, Juliane. In Frontiers in Psychology, 15. 2024.
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Lawfulness by design – development and evaluation of lawful design patterns to consider legal requirements.Dickhaut, E.; Janson, A.; Söllner, M.; Leimeister, J. M. In Eur. J. Inf. Syst., 33(4), pp. 441–468. 2024.
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Casimir Effect in MEMS: Materials, Geometries, and Metrologies—A Review.Elsaka, Basma; Yang, Xiaohui; Kästner, Philipp; Dingel, Kristina; Sick, Bernhard; Lehmann, Peter; Buhmann, Stefan Yoshi; Hillmer, Hartmut. In Materials, 17(14), p. 3393. 2024.
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Casimir force densities, i.e., force per area, become very large if two solid material surfaces come closer together to each other than 10 nm. In most cases, the forces are attractive. In some cases, they can be repulsive depending on the solid materials and the fluid medium in between. This review provides an overview of experimental and theoretical studies that have been performed and focuses on four main aspects: (i) the combinations of different materials, (ii) the considered geometries, (iii) the applied experimental measurement methodologies and (iv) a novel self-assembly methodology based on Casimir forces. Briefly reviewed is also the influence of additional parameters such as temperature, conductivity, and surface roughness. The Casimir effect opens many application possibilities in microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS), where an overview is also provided. The knowledge generation in this fascinating field requires interdisciplinary approaches to generate synergetic effects between technological fabrication metrology, theoretical simulations, the establishment of adequate models, artificial intelligence, and machine learning. Finally, multiple applications are addressed as a research roadmap.
Personalisierte Politische Online-Werbung. Nutzung – Wirkung – Rechtlicher Rahmen, Policy Paper, Forschungsberichte der Plattform Privatheit. Technical Report (2), . Gilga, C.; Panahi, T.; Karaboga, M.; Meier, Y.; Schindler, S. Fraunhofer ISI, Karlsruhe, 2024.
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Nachhaltiges Konsumieren im Anthropozän. Strukturelle Widersprüche, lebenspraktische Konflikte und die Zukunft der Verbraucherdemokratie.Lamla, Jörn. In Zeitschrift für Wirtschafts- und Unternehmensethik (zfwu), 25(1), pp. 7–27. 2024.
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Politisches Microtargeting – Rechtsfragen personalisierter politischer Werbung.Gilga, C.; Panahi, T.; Schindler, S. In Computer und Recht, pp. 416–424. 2024.
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More Than Just Efficiency: Impact of Generative AI on Developer Productivity.Li, Mahei; Dickhaut, Ernestine; Bruhin, Olivia; Wache, Hendrik; Weritz, Pauline. In Americas Conference on Information Systems (AMCIS). Utah, USA, 2024.
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The collaboration between genAI and humans in the field of information systems holds transformative potential echoing the co-creation ethos in digital ecosystems. GenAI's automated code generation capabilities present an opportunity for seamless cooperation with human developers. As genAI evolves, it can contribute to the generation of code with minimal human input, enabling developers to focus on higher-level conceptualization and problem-solving. The individual work changes by GenAI also have wider-reaching effects, which requires a holistic understanding of its impact. Our interview study with 15 software developers presents a shift towards a more balanced viewpoint on measuring the effects of genAI in software development environments, specifically the importance of human-centric indicators (e.g. satisfaction and wellbeing) in addition to traditional efficiency and effectiveness indicators. This insight underscores the balancing act between enhancing productivity and potentially undermining it, reflecting the interplay of co-creation and co-destruction in service ecosystems and calling for a more holistic socio- technical perspective.
“Dear Manager, now I know what you expect”: Examining availability ambiguity in two studies.Heissler, Clara; Ohly, Sandra; Kern, Marcel. In German Journal of Human Resource Management, 38(3), pp. 259–282. 2024.
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Criteria for Uncertainty-based Corner Cases Detection in Instance Segmentation.Heidecker, Florian; El-Khateeb, Ahmad; Bieshaar, Maarten; Sick, Bernhard. In arXiv e-prints, p. arXiv:2404.11266. 2024.
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The operating environment of a highly automated vehicle is subject to change, e.g., weather, illumination, or the scenario containing different objects and other participants in which the highly automated vehicle has to navigate its passengers safely. These situations must be considered when developing and validating highly automated driving functions. This already poses a problem for training and evaluating deep learning models because without the costly labeling of thousands of recordings, not knowing whether the data contains relevant, interesting data for further model training, it is a guess under which conditions and situations the model performs poorly. For this purpose, we present corner case criteria based on the predictive uncertainty. With our corner case criteria, we are able to detect uncertainty-based corner cases of an object instance segmentation model without relying on ground truth (GT) data. We evaluated each corner case criterion using the COCO and the NuImages dataset to analyze the potential of our approach. We also provide a corner case decision function that allows us to distinguish each object into True Positive (TP), localization and/or classification corner case, or False Positive (FP). We also present our first results of an iterative training cycle that outperforms the baseline and where the data added to the training dataset is selected based on the corner case decision function.
CoMoRea 2024: 20th Workshop on Context and Activity Modeling and Recognition-Welcome and Committees.Civitarese, Gabriele; Hirmer, Pascal; Indulska, Jadwiga; Bettini, Claudio; Nicklas, Daniela; Riboni, Daniele; Stuckenschmidt, Heiner; Wieland, Matthias; Bauer, Martin; David, Klaus; Dürr, Frank; Kirsch Pinheiro, Manuele; Lalanda, Philippe; Zhong, Mingyang. In 2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2024, pp. 19–20. Institute of Electrical and Electronics Engineers Inc., 2024.
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The Power of Reading Support for Learners: A State-of-the-Art Analysis of Computer-Assisted Reading from an Information Systems Perspective.Haenel, M.; Wambsganss, T.; Söllner, M. In Hawaii International Conference on System Sciences. Maui, Hawaii, USA, 2024.
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Reading and synthesizing scientific papers is a crucial skill for students. However, many students in higher education struggle to effectively comprehend scientific texts. To address this challenge, research has leveraged computer-assisted reading (CAR) systems to improve students' reading comprehension abilities at scale. However, the research and application of CAR in higher education still lack an organized overview and clear terminology due to the multidisciplinary character of the research field (e.g., Education didactic, Human-Computer Interaction, or Information Systems). Therefore, we perform a systematic literature review on CAR from an interdisciplinary Information Systems perspective. We take the socio-technical systems theory as a lens to organize, summarize past literature as well to identify white spots for a future research agenda. The main contributions of this paper are the synthesis and consolidation of CAR to create a basis for all researchers investigating the research field of CAR in higher education.
From Structured to Unstructured: A Comparative Analysis of Computer Vision and Graph Models in solving Mesh-based PDEs.Decke, Jens; Wünsch, Olaf; Sick, Bernhard; Gruhl, Christian. In International Conference on Architecture of Computing Systems (ARCS), pp. 82–96. Springer, 2024.
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This article investigates the application of computer vision and graph-based models in solving mesh-based partial differential equations within high-performance computing environments. Focusing on structured, graded structured, and unstructured meshes, the study compares the performance and computational efficiency of three computer vision-based models against three graph-based models across three datasets. The research aims to identify the most suitable models for different mesh topographies, particularly highlighting the exploration of graded meshes, a less studied area. Results demonstrate that computer vision-based models, notably U-Net, outperform the graph models in prediction performance and efficiency in two (structured and graded) out of three mesh topographies. The study also reveals the unexpected effectiveness of computer vision-based models in handling unstructured meshes, suggesting a potential shift in methodological approaches for data-driven partial differential equation learning. The article underscores deep learning as a viable and potentially sustainable way to enhance traditional high-performance computing methods, advocating for informed model selection based on the topography of the mesh.
Fault Detection for Agents in Power Grid Topology Optimization: A Comprehensive Analysis.Lehna, Malte; Hassouna, Mohamed; Degtyar, Dmitry; Tomforde, Sven; Scholz, Christoph. In Machine Learning for Sustainable Power Systems (ML4SPS), ECML. Springer, 2024.
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Optimizing the topology of transmission networks using Deep Reinforcement Learning (DRL) has increasingly come into focus. Various DRL agents have been proposed, which are mostly benchmarked on the Grid2Op environment from the Learning to Run a Power Network (L2RPN) challenges. The environments have many advantages with their realistic chronics and underlying power flow backends. However, the interpretation of agent survival or failure is not always clear, as there are a variety of potential causes. In this work, we focus on the failures of the power grid simulation to identify patterns and detect them in advance. We collect the failed chronics of three different agents on the WCCI 2022 L2RPN environment, totaling about 40k data points. By clustering, we are able to detect five distinct clusters, identifying common failure types. Further, we propose a multi-class prediction approach to detect failures beforehand and evaluate five different prediction models. Here, the Light Gradient-Boosting Machine (LightGBM) shows the best failure detection performance, with an accuracy of 86%. It also correctly identifies in 91% of the time failure and survival observations. Finally, we provide a detailed feature importance analysis that identifies critical features and regions in the grid.
Rechtliche Chancen und Grenzen der automatisierten Entscheidungsunterstützung und Entscheidungsfindung in der Medizin. Casper, F. In of Der Elektronische Rechtsverkehr (Band 50). Nomos Verlagsgesellschaft, Baden-Baden, 2024.
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Self-Aware Control for Autonomous Underwater Vehicles.Decke, Jens; Gerland, Florian; Schomberg, Thomas; Wünsch, Olaf; Sick, Bernhard; Gruhl, Christian. In Workshop on self-improving system integration (SISSY), ACSOS, pp. 13–14. IEEE, 2024.
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We present a concept to research the implementation of a self-aware control system for underwater cleaning robots. Multiple robots cooperate as a swarm to clean the hull of large container ships while in transit. We utilise physics-informed neural networks to implement an autonomous steering system and combine it with a deep reinforcement learning-based decision and scheduling system. This approach ensures efficient navigation and cleaning operations, adapting to dynamic environmental conditions in real-time. The proposed control system allows the cleaner robots, to enhance fuel efficiency, reduce CO2 emissions, and minimize the environmental impact of maritime transportation.
An Efficient Multi Quantile Regression Network with Ad Hoc Prevention of Quantile Crossing.Decke, Jens; Jenß, Arne; Sick, Bernhard; Gruhl, Christian. In International Conference on Architecture of Computing Systems (ARCS), pp. 51–66. Springer, 2024.
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This article presents the Sorting Composite Quantile Regression Neural Network (SCQRNN), an advanced quantile regression model designed to prevent quantile crossing and enhance computational efficiency. Integrating ad hoc sorting in training, the SCQRNN ensures non-intersecting quantiles, boosting model reliability and interpretability. We demonstrate that the SCQRNN not only prevents quantile crossing and reduces computational complexity but also achieves faster convergence than traditional models. This advancement meets the requirements of high-performance computing for sustainable, accurate computation. In organic computing, the SCQRNN enhances self-aware systems with predictive uncertainties, enriching applications across finance, meteorology, climate science, and engineering.
Die Zukunft des Konsums. Agenda zur Neuperspektivierung der Verbraucherforschung.Lamla, Jörn; Heidbrink, Ludger; Hohnsträter, Dirk; Loer, Kathrin; Roschka, Jakob. Universität Kassel, Kassel, 2024.
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Influence of the Pedestrian Geometry in Collision Avoidance Systems.Götz, Johann; Mathuseck, Lars; Busch, Lennart; David, Klaus. In 2024 IEEE 99th Vehicular Technology Conference (VTC2024-Spring), pp. 1–5. IEEE, 2024.
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Physiological data for affective computing in HRI with anthropomorphic service robots: the AFFECT-HRI data set.Heinisch, Judith S; Kirchhoff, Jérôme; Busch, Philip; Wendt, Janine; von Stryk, Oskar; David, Klaus. In Scientific Data, 11(1), p. 333. 2024.
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Beyond Trial and Error: Strategic Assessment of Decentralized Identity in US Healthcare.Göppinger, Sophia Maite Magdalena; Meier, Alexander; Elshan, Edona; Malekan, Omid; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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The US healthcare system relies on trustworthy and effective data exchange. Yet its data flows are impaired by pervasive conflicting interests and incentives and the lack of authentic data, leading to persistent inefficiencies. By ensuring authentic data, decentralized identity (ID) presents a potential solution. However, information systems (ISs) have historically shown high rates of unsuccessful deployment in healthcare. Since formative use case evaluation frameworks can enhance deployment success rates, this paper conducted a participatory action research study to develop and test an evidence-based, theory-informed, and practical framework for assessing healthcare use cases' amenability to decentralized ID. The framework serves healthcare organizations as a decision-support tool in choosing suitable use cases for decentralized ID and planning corresponding initiatives. For researchers, the socio-technical factors that determine use cases's amenability to decentralized ID enhance their understanding of this novel IS and the socio-technical change it brings about.
Wiping out the limitations of Large Language Models - A Taxonomy for Retrieval Augmented Generation.Li, Mahei Manhai; Nikishina, Irina; Sevgili, Özge; Semmann, Martin. 2024.
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Current research on RAGs is distributed across various disciplines, and since the technology is evolving very quickly, its unit of analysis is mostly on technological innovations, rather than applications in business contexts. Thus, in this research, we aim to create a taxonomy to conceptualize a comprehensive overview of the constituting characteristics that define RAG applications, facilitating the adoption of this technology in the IS community. To the best of our knowledge, no RAG application taxonomies have been developed so far. We describe our methodology for developing the taxonomy, which includes the criteria for selecting papers, an explanation of our rationale for employing a Large Language Model (LLM)-supported approach to extract and identify initial characteristics, and a concise overview of our systematic process for conceptualizing the taxonomy. Our systematic taxonomy development process includes four iterative phases designed to refine and enhance our understanding and presentation of RAG’s core dimensions. We have developed a total of five meta-dimensions and sixteen dimensions to comprehensively capture the concept of Retrieval-Augmented Generation (RAG) applications. When discussing our findings, we also detail the specific research areas and pose key research questions to guide future information system researchers as they explore the emerging topics of RAG systems.
Hedonic Signals in Crowdfunding.Blohm, Ivo; Schulz, Moritz; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE), 66, pp. 757–775. 2024.
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This study draws on signaling theory to investigate the effect of hedonic signals in crowdfunding projects on funding performance. It compares the effect of hedonic signals across reward-, equity-, and donation-based crowdfunding platforms by combining archival data from 18 platforms and a large-scale panel of 64 experts that rate the strength of hedonic signals in 108 crowdfunding projects. Through the application of mixed linear modeling, the findings indicate a positive influence of stronger hedonic signals on funding performance. However, there are substantial differences across platform types. Increasing the strength of hedonic signals by one standard deviation increases funding performance by 28.9% on reward platforms, while there are no systematic effects on equity and donation platforms. This study contributes to existing crowdfunding research by clarifying the role of hedonic signals in crowdfunding and shedding light on the increasing need to better consider the characteristics of different crowdfunding platforms in crowdfunding research.
Feldstudie zur Navigation autonomer mobiler Roboter an belebten öffentlichen Orten.Hegenberg, J.; Schmidt, L. In Arbeitswissenschaft in-the-loop - Mensch-Technologie-Integration und ihre Auswirkung auf Mensch, Arbeit und Arbeitsgestaltung: 70. Kongress der Gesellschaft für Arbeitswissenschaft (Stuttgart 2024), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (D.6.4). GfA-Press, Sankt Augustin, 2024.
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Autonome mobile Roboter fahren zunehmend im öffentlichen Raum. Mögliche Konflikte zwischen der Fahrroute des Roboters und den Laufrouten der Passanten müssen so aufgelöst werden, dass die Passanten sich nicht gestört oder gefährdet fühlen und der Roboter dennoch effizient sein Ziel erreicht. Dazu wird eine Studie präsentiert, die nonverbale Kommunikation von Bewegungsabsichten mittels Blicken bzw. Kopfbewegungen im Feld erprobt. Bestehende Erkenntnisse aus künstlichen Szenarien und Laborstudien sowie zum menschlichen Verhalten werden im halböffentlichen Raum eines Einkaufszentrums einer Felderprobung unterzogen sowie vorläufige Ergebnisse präsentiert.
Betroffenenrechte in der digitalen Selbstvermessung.Böning, F.; Laufs, U. In Data Sharing – Datenkapitalismus by Default?, M. Friedewald, A. Roßnagel, C. Geminn, M. Karaboga, S. Schindler (eds.), pp. 301–322. Nomos, Baden-Baden, 2024.
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dopanim: A Dataset of Doppelganger Animals with Noisy Annotations from Multiple Humans.Herde, Marek; Huseljic, Denis; Rauch, Lukas; Sick, Bernhard. In Conference on Neural Information Processing Systems (NeurIPS 2024) Track on Datasets and Benchmarks, pp. 1–16. 2024.
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Human annotators typically provide annotated data for training machine learning models, such as neural networks. Yet, human annotations are subject to noise, impairing generalization performances. Methodological research on approaches counteracting noisy annotations requires corresponding datasets for a meaningful empirical evaluation. Consequently, we introduce a novel benchmark dataset, dopanim, consisting of about 15,750 animal images of 15 classes with ground truth labels. For approximately 10,500 of these images, 20 humans provided over 52,000 annotations with an accuracy of circa 67%. Its key attributes include (1) the challenging task of classifying doppelganger animals, (2) human-estimated likelihoods as annotations, and (3) annotator metadata. We benchmark well-known multi-annotator learning approaches using seven variants of this dataset and outline further evaluation use cases such as learning beyond hard class labels and active learning. Our dataset and a comprehensive codebase are publicly available to emulate the data collection process and to reproduce all empirical results.
Tutorial: Interactive Adaptive Learning.Herde, Marek; Pham, Minh Tuan; Tharwat, Alaa; Sick, Bernhard. In Workshop on Interactive Adapative Learning (IAL), ECML PKDD, pp. 1–6. 2024.
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We summarize the contents of the tutorial we present as a part of the 8th Interactive Adaptive Learning workshop. This workshop is co-located with the ECML-PKDD conference, where it takes place on September 9th, 2024 in Vilnius, Lithuania.
GenAI and Software Engineering: Strategies for Shaping the Core of Tomorrow’s Software Engineering Practice.Bruhin, Olivia; Ebel, Philipp; Müller, Leon; Li, Mahei. In International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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The rapid integration of Generative Artificial Intelligence (GenAI) into Software Engineering (SE) transforms how software is designed, developed, and maintained, introducing significant managerial challenges. This study examines these emerging challenges and proposes strategic actions for managing SE in the future. We provide an overview of the current GenAI development within SE and analyze its implications across three critical pillars: People, Process, and Technology. Our findings indicate that GenAI introduces a dynamic complexity to these elements, demanding a combined managerial approach. We propose six strategic actions essential for shaping the future of SE practice.This study aims to help practitioners make strategic decisions regarding GenAI implementation and offers researchers insights into past findings and opportunities for further investigation.
Exploring The Paradoxical Tensions in Low Code Environments.Bruhin, Olivia; Ebel, Philipp; Elshan, Edona. In International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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The rapid acceleration of digitalization has increased the demand for dynamic software development, exposing a significant skills gap in IT. Low Code Development Platforms (LCDP) have emerged as a crucial solution, enabling faster development cycles and democratizing software creation. However, integrating citizen and professional developers within these platforms introduces new challenges, particularly in task division, collaboration, and governance. This study explores the dynamic of the interactions in low code environments, using paradox theory to analyze the resulting tensions – the paradox of empowerment, the paradox of security, and the paradox of harmonization – and their impact on both innovation and efficiency. Our findings provide critical insights into the roles, collaborative processes, and governance frameworks necessary for effective and balanced LCDP implementation. These insights provide a framework for effective and balanced LCDP implementation, offering organizations strategies to enhance innovation while managing the inherent complexities within these environments.
Predictions and Decision Making for Resilient Intelligent Sustainable Energy Systems.Braun, Martin; Gruhl, Christian; Hans, Christian Andreas; Härtel, Philipp; Scholz, Christoph; Sick, Bernhard; Siefert, Malte; Steinke, Florian; Stursberg, Olaf; Wende-von Berg, Sebastia. In Innovative Smart Grid Technologies Europe (ISGT EUROPE), pp. 1–5. IEEE, 2024.
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Future energy systems are subject to various uncertain influences. As resilient systems they should maintain a constantly high operational performance whatever happens. We explore different levels and timescales of decision making in energy systems, highlighting different uncertainty sources in different domains and discuss how uncertainties can be represented and how to react to them. Moreover, we summarize, which uncertainties are already well examined and which ones still need further inquiry to obtain resilient energy systems.
Annot-Mix: Learning with Noisy Class Labels from Multiple Annotators via a Mixup Extension.Herde, Marek; Lührs, Lukas; Huseljic, Denis; Sick, Bernhard. In European Conference on Artificial Intelligence (ECAI), pp. 2910–2918. IOS Press, 2024.
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Training with noisy class labels impairs neural networks' generalization performance. In this context, mixup is a popular regularization technique to improve training robustness by making memorizing false class labels more difficult. However, mixup neglects that multiple annotators, e.g., crowdworkers, typically provide class labels. Therefore, we propose an extension of mixup, which handles multiple class labels per instance while considering which class label originates from which annotator. Integrated into our multi-annotator classification framework annot-mix, it performs superiorly to eleven (mostly state-of-the-art) approaches in an evaluation study with eleven datasets comprising noisy class labels from either human or simulated annotators. Our code is publicly available through our GitHub repository at https://github.com/ies-research/multi-annotator-machine-learning/tree/annot-mix.
The Rise of Generative AI in Low Code Development Platforms – An Analysis and Future Directions.Bruhin, Olivia; Dickhaut, Ernestine; Elshan, Edona; Li, Mahei Manhai. In Hawaii International Conference on System Sciences (HICSS). Waikiki, Hawaii, USA, 2024.
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This study investigates the relationship between Generative AI (GenAI) and Low Code Development Platforms (LCDPs), providing preliminary insights into Gen's transformative potential in this context. It is based on expert interviews and provides insight into the changing landscape of LCDPs influenced by GenAI. The findings highlight the promising benefits of GenAI in LCDPs, such as increased efficiency and decreased errors, while also emphasizing the importance of human oversight and collaboration. The findings also highlight the importance of interpersonal skills in IT, even in an increasingly automated environment. While the economic efficiency and broader implications of GenAI are still being investigated, the study lays the groundwork for future research in this rapidly evolving domain.
The GDPR five years on. A retrospective from the viewpoint of consumers.Geminn, C.; Roßnagel, A. In Revue européenne de droit de la consommation / European Journal of Consumer Law, pp. 109–129. 2024.
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Lootboxen in Videospielen aus jugendschutzrechtlicher Perspektive - Wie kann das Jugendschutzrecht seinem Namen gerecht werden?Helmke, J. T. In Computer und Recht, pp. 254–261. 2024.
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Die Verwaltung in der Pandemie. Bewältigungsstrategien in Japan und Deutschland.Geminn, C.; Terada, M.; Tatsumi, T. In Die Öffentliche Verwaltung, pp. 464–473. 2024.
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What is the Intrinsic Dimension of Your Binary Data? - and How to Compute it Quickly.Hanika, Tom; Hille, Tobias. In Conceptual Knowledge Structures - First International Joint Conference, CONCEPTS 2024, Cádiz, Spain, September 9-13, 2024, Proceedings, Vol. 14914 of Lecture Notes in Computer Science, I. P. Cabrera, S. Ferré, S. A. Obiedkov (eds.), pp. 97–112. Springer, 2024.
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Beyond Code: The Impact of Generative AI on Work Systems in Software Engineering.Bruhin, Olivia. In International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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The development of Generative Artificial Intelligence (GenAI) in Software Engineering (SE) is driving significant transformations in work systems, impacting work practices, information management, and development processes. This study applies Work System Theory to explore how GenAI not only enhances individual tasks but also redefines entire workflows and collaboration models within SE environments. Through a case study involving expert interviews at a telecommunications and software company, the research uncovers both substantial benefits and emerging challenges associated with GenAI integration. The findings contribute to a structured framework that offers guidance for effectively implementing GenAI to enhance productivity and foster innovation in SE. These insights are essential for practitioners managing the rapidly evolving SE landscape, ensuring the successful and sustainable adoption of GenAI within work systems.
Der europäische Gesundheitsdatenraum: Ein Paradigmenwechsel in der Verarbeitung von Gesundheitsdaten?Böning, F.; Riechert, A. In Datenzugangsregeln. Zwischen Freigabe und Kontrolle, S. Augsberg, M. Düwell, B. Müller (eds.), pp. 215–257. Frankfurt/New York, 2024.
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General Reusability: Ensuring Long-Term Benefits of Deep Active Learning.Hahn, Paul; Huseljic, Denis; Herde, Marek; Sick, Bernhard. In Workshop on Interactive Adapative Learning (IAL), ECML PKDD, pp. 33–46. 2024.
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Deep active learning (DAL) provides a promising framework for reducing labeling costs for data-hungry deep neural networks. In DAL research, experiments are evaluated based on the performance of the model that is responsible for querying data, which can be interpreted as a model-centric evaluation. However, the data queried by DAL should be model agnostic so that new models can be effectively trained on it. An example can be derived from the rapid progress in deep learning, where new architectures are proposed in quick succession. Naturally, we want to employ these new and more effective models while still using the queried data from DAL. This results in the need to ensure high performance for both current and future models, which we refer to as reusability. In line with this topic, we propose general reusability, a novel, data-centric evaluation metric that measures the long-term value of queried data. Our experiments demonstrate that the current evaluation protocol in DAL research does not assess the reusability of data and that GR can fill this gap.
Capturing artificial intelligence applications’ value proposition in healthcare – a qualitative research study.Hennrich, Jasmin; Ritz, Eva; Hofmann, Peter; Urbach, Nils. In Capturing artificial intelligence applications’ value proposition in healthcare – a qualitative research study, 2024. 2024.
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Artificial intelligence (AI) applications pave the way for innovations in the healthcare (HC) industry. However, their adoption in HC organizations is still nascent as organizations often face a fragmented and incomplete picture of how they can capture the value of AI applications on a managerial level. To overcome adoption hurdles, HC organizations would benefit from understanding how they can capture AI applications’ potential. We conduct a comprehensive systematic literature review and 11 semi-structured expert interviews to identify, systematize, and describe 15 business objectives that translate into six value propositions of AI applications in HC. Our results demonstrate that AI applications can have several business objectives converging into risk-reduced patient care, advanced patient care, self-management, process acceleration, resource optimization, and knowledge discovery. We contribute to the literature by extending research on value creation mechanisms of AI to the HC context and guiding HC organizations in evaluating their AI applications or those of the competition on a managerial level, to assess AI investment decisions, and to align their AI application portfolio towards an overarching strategy.
It is the habit not the handle that affects tooth brushing - a randomised counterbalanced cross over study with young and healthy adults.Deinzer, Renate; Eidenhardt, Zdenka; Sohrabi, Keywan; Stenger, Manuel; Kraft, Dominik; Sick, Bernhard; Götz-Hahn, Franz; Bottenbruch, Carlotta; Berneburg, Nils; Weik, Ulrike. In BMC Oral Health, 24(1), p. 757. Springer, 2024.
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Objective To assess the effect of the toothbrush handle on video-observed toothbrushing behaviour and toothbrushing effectiveness. Methods This is a randomized counterbalanced cross-over study. N = 50 university students and employees brushed their teeth at two occasions, one week apart, using either a commercial ergonomically designed manual toothbrush (MT) or Brushalyze V1 (BV1), a manual toothbrush with a thick cylindrical handle without any specific ergonomic features. Brushing behaviour was video-analysed. Plaque was assessed at the second occasion immediately after brushing. Participants also rated their self-perceived oral cleanliness and directly compared the two brushes regarding their handling and compared them to the brushed they used at home. Results The study participants found the BV1 significantly more cumbersome than the M1 or their brush at home. (p < 0.05). However, correlation analyses revealed a strong consistency of brushing behavior with the two brushes (0.71 < r < 0.91). Means differed only slightly (all d < 0.36). These differences became statistically significant only for the brushing time at inner surfaces (d = 0.31 p = 0.03) and horizontal movements at inner surfaces (d = 0.35, p = 0.02). Plaque levels at the gingival margins did not differ while slightly more plaque persisted at the more coronal aspects of the crown after brushing with BV1 (d = 0.592; p 0.042). Discussion The results of the study indicate that the brushing handle does not play a major role in brushing behavior or brushing effectiveness.
Unveiling Challenges and Opportunities in Low Code Development Platforms: A StackOverflow Analysis.Elshan, Edona; Bruhin, Olivia; Schmidt, Niklas; Simeon, Dominik; Kedziora, Damian. In Proceedings of the 57th Hawaii International Conference on System Sciences (HICSS). O’ahu, Hawaii, 2024.
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As the rapidly expanding digital transformations at multiple organizations require development of growing number of software solutions, low code development platforms (LCDPs) started to be widely used by pretrained business users, in such use-cases as process automation and rapid application development. Our study explores the challenges of LCDPs use for developers, by investigating 30 000 of their posts at one of the most prominent fora StackOverflow. It is conducted with text-mining approaches, primarily Latent Dirichlet Allocation (LDA), aiming to identify challenges for users of LCDPs. As they were from the areas of visualization, third-party integration, database and table management, datatype conversion, programming languages, and file handling, we further discussed them to propose possible enhancements for users of LCDPs.
Konsum.Lamla, Jörn; Roschka, Jakob. In Handbuch Politische Soziologie, M. Endreß, B. Rampp (eds.). Nomos Verlagsgesellschaft, Baden-Baden, 2024.
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When to Use Smart Contracts Instead of Traditional Contracts – A Conceptual Analysis.Hupe, Anna. In 19th International Conference on Wirtschaftsinformatik (WI). Würzburg, Germany, 2024.
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Smart contracts are code-based representations of business logic that encapsulate predefined rules that they verify and execute autonomously. As self-executing agreements, these contracts running on a blockchain facilitate interactions between untrusted parties, eliminating the need for intermediaries. They speed processes, increase transparency, and facilitate data exchange across national and organizational boundaries, providing a competitive advantage. However, there are significant costs associated with implementing smart contracts. In our study, we conduct a comparative analysis of these costs and compared them to traditional contracts. Using a combination of literature review and expert interviews, we dissect the cost structures of both approaches at an abstract level. We then construct a matrix to systematically compare traditional contracts with smart contracts. This framework allows us to model the conditions that favor the use of smart contracts over traditional ones, and to identify instances where each approach has a distinct advantage.
The Interplay of Uncertainty Modeling and Deep Active Learning: An Empirical Analysis in Image Classification.Huseljic, Denis; Herde, Marek; Nagel, Yannick; Rauch, Lukas; Strimaitis, Paulius; Sick, Bernhard. In Transactions on Machine Learning Research. 2024.
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Deep active learning (AL) seeks to reduce the annotation costs required for training deep neural networks (DNNs). Often, deep AL strategies focus on instances where the predictive uncertainty of a DNN is high. Furthermore, Bayesian concepts to model uncertainty are frequently adopted. Despite considerable research, a detailed analysis of the role of uncertainty in deep AL is still missing, especially regarding aleatoric and epistemic uncertainty, both related to predictive uncertainty. This article provides an in-depth empirical study analyzing the interplay of uncertainty and deep AL in image classification. Our study investigates four hypotheses that provide an intuitive understanding of the effects of accurately estimating aleatoric and epistemic uncertainty on existing uncertainty-based AL strategies but also, in the opposite direction, the impact of uncertainty-based AL on the quality of uncertainty estimates that are needed in many applications. By analyzing these hypotheses on synthetic and real-world data, we find that accurate aleatoric estimates can even impair instance selection, while accurate epistemic estimates have negligible effects. Moreover, we provide a publicly available toolbox for deep AL with various models and strategies to facilitate further research and practical applications. Code is available at https://github.com/dhuseljic/dal-toolbox.
LiST: An All-Linear-Layer Spatial-Temporal Feature Extractor with Uncertainty Estimation for RUL Prediction.Huang, Zhixin; Gruhl, Christian; Sick, Bernhard. In IEEE Conference on Industrial Electronics and Applications (ICIEA), pp. 1–7. IEEE, 2024.
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In the context of Remaining Useful Life (RUL) prediction for industrial systems, the pursuit of prediction accuracy must be balanced against the hardware costs of model operation and the reliability of prediction results. To resolve these challenges, we introduce LiST, an all-linear-layer spatial-temporal feature extractor integrated with uncertainty estimation, specifically designed for processing sensor multivariate time series (MTS) data. Unlike traditional linear models that flatten MTS and thus neglect their spatial-temporal dependencies, LiST's linear layers act on both the sensor and time dimensions of MTS that can extract spatial and temporal features like GNN and RNN models. Through performance comparisons on four RUL prediction datasets, LiST uses only 66.1% of the parameters, achieves comparable accuracy to state-of-the-art GNN and RNN models, obtains the best results on two datasets with up to a 21.6% improvement in Score, and enhances training efficiency by 3.2 times. Additionally, LiST can predict RUL with uncertainty estimation and precisely disentangle epistemic and aleatoric uncertainties, thus enhancing the model's practicality and reliability in real-world industrial applications.
Weisfeiler–Lehman goes dynamic: An analysis of the expressive power of Graph Neural Networks for attributed and dynamic graphs.Beddar-Wiesing, Silvia; D’Inverno, Alessio; Graziani, Caterina; Lachi, Veronica; Moallemy-Oureh, Alice; Scarselli, Franco; Thomas, Josephine. In Neural Networks, 173, p. 106213. Elsevier, 2024.
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Graph Neural Networks (GNNs) are a large class of relational models for graph processing. Recent theoretical studies on the expressive power of GNNs have focused on two issues. On the one hand, it has been proven that GNNs are as powerful as the Weisfeiler–Lehman test (1-WL) in their ability to distinguish graphs. Moreover, it has been shown that the equivalence enforced by 1-WL equals unfolding equivalence. On the other hand, GNNs turned out to be universal approximators on graphs modulo the constraints enforced by 1-WL/unfolding equivalence. However, these results only apply to Static Attributed Undirected Homogeneous Graphs (SAUHG) with node attributes. In contrast, real-life applications often involve a much larger variety of graph types. In this paper, we conduct a theoretical analysis of the expressive power of GNNs for two other graph domains that are particularly interesting in practical applications, namely dynamic graphs and SAUGHs with edge attributes. Dynamic graphs are widely used in modern applications; hence, the study of the expressive capability of GNNs in this domain is essential for practical reasons and, in addition, it requires a new analyzing approach due to the difference in the architecture of dynamic GNNs compared to static ones. On the other hand, the examination of SAUHGs is of particular relevance since they act as a standard form for all graph types: it has been shown that all graph types can be transformed without loss of information to SAUHGs with both attributes on nodes and edges. This paper considers generic GNN models and appropriate 1-WL tests for those domains. Then, the known results on the expressive power of GNNs are extended to the mentioned domains: it is proven that GNNs have the same capability as the 1-WL test, the 1-WL equivalence equals unfolding equivalence and that GNNs are universal approximators modulo 1-WL/unfolding equivalence. Moreover, the proof of the approximation capability is mostly constructive and allows us to deduce hints on the architecture of GNNs that can achieve the desired approximation.
Disclosing Diverse Perspectives of News Articles for Navigating between Online Journalism Content.Horn, Viktoria; Hirth, Johannes; Holfeld, Julian; Behmenburg, Jens Hendrik; Draude, Claude; Stumme, Gerd. In Proceedings of the 13th Nordic Conference on Human-Computer Interaction, of NordiCHI ’24, pp. 1–14. Association for Computing Machinery, Uppsala, Sweden, 2024.
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Today, exposure to journalistic online content is predominantly controlled by news recommender systems, which often suggest content that matches user’s interests or is selected according to non-transparent recommendation criteria. To circumvent resulting trade-offs like polarisation or fragmentation whilst ensuring user’s autonomy, we explore how different perspectives within online news can be disclosed instead for guiding navigation. To do so, we developed an interactive prototype that displays article titles in correspondence to their argumentative orientation. In order to investigate how the usage of our novel navigation structure impacts the choice of news articles and user experience, we conducted an exploratory user study assessing the impact of the design parameters chosen. Implications are drawn from the study results and the development of the interactive prototype for the exposure to diversity in the context of navigating news content online.
Overcoming People-related Challenges in Large-scale Agile Transformations: The Role of Online Communities of Practice.Geffers, Kristin. In European Conference on Information Systems (ECIS 2024). Paphos, Cyprus, 2024.
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The contemporary business landscape is shaped by complexity, ongoing change, and disruptions. To remain competitive, an increasing number of organizations are embracing the company-wide adoption of agile methodologies, known as large-scale agile transformations (LSATs). However, these transformations face significant challenges, such as employees’ lack of skills and motivation. While Communities of Practice (CoPs) are recognized as supportive mechanisms for LSATs, their role in addressing transformational challenges lacks adequate academic exploration. Our research bridges this gap by conducting an exploratory qualitative case study in a European automotive software company undergoing a LSAT. Through interviews with 33 actively participating employees across several internal online CoPs, we have found that these CoPs play a fundamental role in developing relevant employee abilities (workforce agility), perceptions (psychological empowerment), and attitudes (agile mindset). These findings contribute to understanding agile transformations and online CoPs and offer insights into effective strategies for managing and mitigating LSATs’ challenges.
Individualrechte in der KI-Verordnung. Die Rechte auf Beschwerde und auf Erläuterung der Entscheidungsfindung im Einzelfall.Hornung, G. In Datenschutz und Datensicherheit, pp. 507–512. 2024.
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Behavior Change Techniques in Digital Interventions for Health Behavior Change: A Taxonomy of Popular Mobile Applications.Meywirth, S.; Söllner, M. In Proceedings of the 57th Hawaii International Conference on System Sciences (HICSS). Hawaii International Conference on System Sciences 2024 (HICSS-57), 2024.
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Designing a Large Language Model-Based Coaching Intervention for Lifestyle Behavior Change.Meywirth, S.; Söllner, M. In Design Science Research for a Resilient Future, M. Mandviwalla, M. Söllner, T. Tuunanen (eds.), pp. 81–94. Springer Nature, Switzerland, 2024.
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Time-Series Representation Learning via Heterogeneous Spatial-Temporal Contrasting for Remaining Useful Life Prediction.Huang, Zhixin; He, Yujiang; Nivarthi, Chandana Priya; Gruhl, Christian; Sick, Bernhard. In International Conference on Pattern Recognition (ICPR), pp. 1–21. Springer, 2024.
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Classical contrastive learning paradigms rely on manual augmentations like cropping, masking, dropping, or adding noise randomly to create divergent sample views from original data. However, the choice of which method to manipulate samples is often subjective and may destroy the latent pattern of the sample. In response, this paper introduces a novel contrastive learning paradigm without choosing sample view augmentation methods, termed Heterogeneous Spatial-Temporal Representation Contrasting (HSTRC). Instead of sample view augmentation, we employ dual branches with a heterogeneous spatial-temporal flipped structure to extract two distinct hidden feature views from the same source data, which avoids disturbing the original time series. Leveraging a combination of cross-branch spatial-temporal contrastive and projected feature contrastive loss functions, HSTRC can effectively extract robust representations from unlabeled time series data. Remarkably, by only fine-tuning the fully connected layers on top of extracted representations by HSTRC, we achieve the best performance across several Remaining Useful Life prediction datasets, showing up to 19.2% improvements over the state-of-the-art supervised learning methods and classical contrastive learning paradigms. Besides, further intensive experiments demonstrate HSTRC's effectiveness in active learning, out-of-distribution testing, and transfer learning scenarios.
Digital Transformation Through the Lens of Intersectional Gender Research Challenges and Needs for Action.Draude, Claude. In Introduction to Digital Humanism: A Textbook, H. Werthner, C. Ghezzi, J. Kramer, J. Nida-Rümelin, B. Nuseibeh, E. Prem, A. Stanger (eds.), pp. 83–97. Springer Nature Switzerland, Cham, 2024.
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In recent years, digital technology has been discussed both in its potential to promote or to demote gender equity. This field of tension, between empowerment and threat of amplifying inequalities, is explored in this contribution. Moreover, this chapter views digital humanism through the lens of intersectional gender research. After discussing the historic relation between gender and humanism, concepts and terminology of gender research and feminist theory are explained in more detail. Following this, the interaction of gender and technology is illustrated through examples. Finally, the lessons learned part contains suggestions and calls for action important for a more inclusive and equitable digital transformation.
Richtlinie über die Resilienz kritischer Einrichtungen: neue Pflichten für Unternehmen und Umsetzungsbedarf in Deutschland.Hornung, G.; Muttach, J.-P.; Schaller, T. In Computer und Recht, pp. 229–237. 2024.
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Cyber-physische Systeme zwischen rechtlichen Anforderungen und rechtskonformer Gestaltung.Hornung, G.; Lurtz, H. In Handbuch Industrie 4.0 und Digitale Transformation. Betriebswirtschaftliche, technische und rechtliche Herausforderungen, 2.nd ed. Wiesbaden, 2024.
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Translations and Participation. Cross-Disciplinary Perspectives. Dinkelaker Jörg; Wenten, Klara-Aylin. transcript, Bielefeld, 2024.
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Spatial-Temporal Attention Graph Neural Network with Uncertainty Estimation for Remaining Useful Life Prediction.Huang, Zhixin; Nivarthi, Chandana Priya; Gruhl, Christian; Sick, Bernhard. In International Joint Conference on Neural Networks (IJCNN), pp. 1–9. IEEE, 2024.
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In the increasingly complex industrial system health management domain, accurate prediction of remaining useful life plays an essential role. This paper analyzes the methods to improve the predictive performance of remaining useful life from three aspects: optimizing model structures, augmenting uncertainty estimation in predictions, and transitioning normalization methods. Based on our analysis, we propose a novel model, the Uncertainty Spatial-Temporal Attention Graph Neural Network (USTAGNN), which consists of three primary components: sensor graph construction, a spatio-temporal feature extractor, and a probabilistic prediction module. The feature extractor leverages graph neural networks and temporal convolutional networks as a foundation to extract spatial and temporal features, further enhanced by attention mechanisms, spectral normalization, and residual connections to bolster its distance awareness. Following extensive experimental comparisons, we utilized the parameter-driven dynamic adjacency matrix for sensor graph construction and the deep kernel Gaussian process for precise uncertainty estimation. USTAGNN tries to resolve issues not thoroughly addressed in existing research, such as comparative analyses of sensor graph construction methods, accurate uncertainty estimation, and the model’s generalization under different preprocessing conditions. The proposed model demonstrated state-of-the-art performance on various subsets of the C-MAPSS dataset, achieving up to a 35.9% improvement in prediction score.
BikeSense: Riding Behaviour Recognition Using An Instrumented Bicycle.Mathuseck, Lars; Götz, Johann; Busch, Lennart; David, Klaus. In BikeSense: Riding Behaviour Recognition Using An Instrumented Bicycle Lars Mathuseck, Johann G¨otz, Lennart Busch, Klaus David University of Kassel, Kassel, Germany comtec@uni-kassel.de Abstract—Riding a bicycle is an environmentally friendly and healthy mode of transportation. However, riding a bicycle also comes with the risk of traffic accidents. One approach to reduce accidents is to use cooperative collision avoidance systems that enable smartphones, carried by cyclists, to communicate with intelligent vehicles. Smartphones are not only equipped with GNSS sensors to obtain a cyclist’s position, but they also come with IMU sensors, which can be used to recognise a cyclist’s riding behaviour. Such riding behaviour information can help to improve collision avoidance systems, because the system can adapt its internal trajectory prediction according to the cyclist’s riding behaviour. This results in a more accurate position prediction based on the actual behaviour of the cyclist, and thus a higher chance of avoiding a collision. In this work, we propose our system BikeSense and perform experiments to collect sensor data on different riding behaviours, such as pedalling, coasting, and braking. To classify these riding behaviours, we use a transformer-based classifier. Then, we analyse how different typ- ical carrying positions of the smartphone in body-worn positions (trouser pocket and backpack) and positions for an on-board IMU (handlebar and frame) influence the detection accuracy. Our results show a promising riding behaviour recognition rate with an average f1-score of 96.5%. Index Terms—bicycle, pedalling detection, behaviour, Human Activity Recognition I. INTRODUCTION With each year, bicycles are becoming more and more popular as a transportation option in cities. According to the European Parliamentary Research Service (EPRS) [1], there are 1 billion bicycles in the world in 2022. However, riding a bicycle is still considered risky compared to driving a car, especially in urban environments [2]. According to the report of the European Road Safety Observatory [3] from 2021, cyclists are the only type of road users in the EU for which no decline in fatalities has been measured since 2010. One reason could be that cars are more in focus and already have countermeasures in production cars, such as braking assistants, lane-keeping systems, or attention warning systems. Passive protection measures, such as helmets, are important in reducing the risk of serious injuries, but not everyone opts for them, and they do not prevent accidents in the first place. On the other hand, active protection measures for cyclists, such as visual-based [4], [5] or cooperative collision avoidance systems [6]–[8], have been proposed by many authors. These systems use camera data from the car or exchange movement information between road users to warn a car that can brake in case of an imminent collision with a vulnerable road user (VRU). Fig. 1: Future position prediction of the bicycle as probability map within a cooperative collision avoidance system of a typical street-crossing accident scenario. Position prediction without riding behaviour information (left) and with riding behaviour information (right). Typically, these collision avoidance systems forecast the movement trajectory of VRUs some seconds into the future to calculate potential collision points [9]. Therefore, collision avoidance systems have to assume a future movement model, such as a constant-velocity model or a constant-acceleration model based on current movement [10]. Riding behaviour recognition can help to improve these active protection measures. For example, pedalling or braking can influence the speed of cyclists and hence their future po- sition (Fig. 1). Therefore, we investigate how to recognise this riding behaviour. Inertial Measurement Unit (IMU) sensors are promising in detecting riding behaviour, because these sensors are already widely used in human activity recognition [11]. Bicycles of the future will be equipped with various sensors, such as on-board IMU sensors, among other sensors that are currently only available in modern cars. However, most of the bicycles currently available do not have such sensors. Therefore, in this paper, we analyse both cases, that is, on- board IMU sensors attached directly to the bicycle, as well as IMU sensors of a smartphone, carried by the cyclist. To simulate the on-board IMU sensors, we attached smartphones to the bicycle and used the smartphone sensors to record the data. We conducted real-life experiments using our instrumented bicycle to collect training and test data. Furthermore, we propose our system BikeSense for riding behaviour recog- nition. Using machine learning, we try to detect whether CoMoRea 2024: 20th Workshop on Context and Activity Modeling and Recognition 979-8-3503-0436-7/24/$31.00 ©2024 IEEE 2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), pp. 1–6. IEEE, 2024.
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Collaborative Hybrid Human AI Learning through Conceptual Exploration.Ganter, Bernhard; Hanika, Tom; Hirth, Johannes; Obiedkov, Sergei. In Proceedings of the Workshops at the Third International Conference on Hybrid Human-Artificial Intelligence co-located with (HHAI) 2024), Malmö, Sweden, June 10-11, 2024, Vol. 3825 of CEUR Workshop Proceedings, P. Ericson, N. Khairova, M. D. Vos (eds.), pp. 1–8. CEUR-WS.org, 2024.
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Designing a Large Language Model-Based Coaching Intervention for Lifestyle Behavior Change.Meywirth, Sophia. In Design Science Research for a Resilient Future, M. Mandviwalla, M. Söllner, T. Tuunanen (eds.). Springer Nature Switzerland, Cham, 2024.
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Adopting and maintaining healthy lifestyle behaviors such as regular exercise and balanced nutrition remain challenging despite their well-documented benefits for preventing chronic diseases and promoting overall well-being. Motivational Interviewing (MI) has emerged as a promising technique to address ambivalence and facilitate behavior change. However, traditional face-to-face delivery of MI interventions is limited by scalability and accessibility issues. Leveraging recent advancements in LLMs, this paper proposes an innovative approach to deliver MI-based coaching for lifestyle behavior change digitally. Following a problem-centered DSR approach, we created an initial prototype based on MI theory and qualitative user interviews using ChatGPT (GPT-3.5). We evaluated our prototype in a qualitative study. Our research outcomes include five design principles and thirteen system requirements. This research enhances the design knowledge base in LLM-based health coaching. It marks an essential first step towards designing LLM-based MI interventions, contributing valuable insights for future research in this emerging field.
Introducing Generative Feedback to Chatbots in Digital Higher Education.Benner, Dennis. In International Conference on Wirtschaftsinformatik (WI). Würzburg, Germany, 2024.
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The rapid evolution of the educational landscape, accentuated by the rise of Generative Artificial Intelligence (GAI), calls for a re-evaluation of digital education methodologies to harness new technologies and meet the changing needs of learners. Focusing on the potential of GAI, this study introduces a novel approach called generative feedback and explores its impact on the motivation, learning experience and performance of students in higher education. Therefore, this study presents a prototype that implements a GAI-driven chat using OpenAI’s GPT-4 turbo model to provide feedback to students. Using an overlap�ping study design that combines a longitudinal field study and a two-stage online experiment, this study investigates how generative feedback affects learners. Initial findings suggest that GAI-driven chatbots can provide meaningful feedback to students and enhance their learning experience, setting the stage for further investigation towards a better theoretical understanding of the design and practical application of GAI-driven chatbot feedback.
Unterstützung einer komplexen Montageaufgabe durch eine Augmented-Reality-Anleitung mit Durchsichtdatenbrille.Mack, D.; Schmidt, L. In DELFI 2024: 22. Fachtagung Bildungstechnologien (Fulda 2024), of Lecture Notes in Informatics (LNI) - Proceedings, S. Schulz, N. Kiesler (eds.), pp. 49–62 *** Best Paper Candidate ***. Gesellschaft für Informatik, Bonn, 2024.
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Die hier vorgestellte Studie betrachtet die Montage eines Notgriffs zur Türentriegelung von Schienenfahrzeugen an einem originalgetreuen Arbeitsplatz mit unterschiedlichen Anleitungen. Dazu wurde eine AR-Anleitung mit einer Durchsichtdatenbrille neu entwickelt und mit einer Smartphone- basierten AR-Anleitung sowie einer Papieranleitung verglichen. Die Papieranleitung stellt den Status Quo in der Montage dar. Die Umsetzung mit einer Durchsichtdatenbrille ist zwar technisch aufwändiger, hat aber gegenüber dem bereits untersuchten Smartphone den Vorteil, dass die Hände für die Montage frei sind. Die untersuchten Hypothesen sind, dass die Anleitungsart einen Einfluss auf die Montagezeit, die Anzahl der Fehler, die Gebrauchstauglichkeit und die Beanspruchung der montierenden Personen hat. Jede Anleitungsart wurde mit acht Probanden und fünf Montagedurchgängen in einem Between- Subject-Design untersucht. Zwischen Durchsichtdatenbrille und Smartphone zeigte sich bei der Gesamtmontagedauer kein signifikanter Unterschied. Eine vergleichbare Fehleranzahl bei geringerer Beanspruchung macht die Durchsichtdatenbrille dennoch interessant für die Wissensvermittlung.
Einsatz von Virtual Reality zum Erlernen eines Montageprozesses.Mack, D.; Funk, J.; Schmidt, L. In Arbeitswissenschaft in-the-loop - Mensch-Technologie-Integration und ihre Auswirkung auf Mensch, Arbeit und Arbeitsgestaltung: 70. Kongress der Gesellschaft für Arbeitswissenschaft (Stuttgart 2024), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (H.4.2). GfA-Press, Sankt Augustin, 2024.
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Für die Montage von komplexen Baugruppen soll ein Schulungsangebot entwickelt werden, welches auch ohne Sprachbarriere ein niedrigschwelliges Anlernen neuer Arbeiter ermöglicht. In der hier vorgestellten Studie wurden zwei Arten von Montagetrainings für die Montage einer realen Baugruppe eines mittelständischen Unternehmens verglichen. Eine Gruppe wurde in einer VR-Trainingssimulation geschult. Die Kontrollgruppe wurde mit einem Video aus der Egoperspektive der VR-Anwendung trainiert. Dabei wurden die Gebrauchstauglichkeit (SUS) und die Beanspruchung (NASA-TLX) bei der Verwendung der Anwendungen getestet. Anschließend wurde die komplexe Baugruppe an einem Montagearbeitsplatz montiert, wobei die benötigte Zeit und die gemachten Fehler protokolliert wurden.
Completing the Skills Puzzle: Developing a Skills Profile Data Model.Freise, Leonie Rebecca; Bretschneider, Ulrich. In 19. Internationale Tagung der Wirtschaftsinformatik (Wi24). Würzburg, Germany, 2024.
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In today’s working world, driven by technological progress, there is a growing need to adapt and update skills to remain competitive. Employers need qualified employees, and employees want to develop their job-related skills, so skills profiles are becoming more prevalent. These profiles comprise skills that individuals bring to their jobs and develop over employment. When used effectively, they offer benefits in attracting, retaining, and developing talent, as well as in staffing and performance management. This paper proposes a data model for such profiles. Drawing upon a systematic literature review and interviews with employees, we derived the critical aspects of a skill profile data model. We further demonstrate the complexity and the need for a structured approach to include a bottom-up perspective. This research contributes to the theoretical understanding of skills profile data models by including the employee perspectives. It further provides insights for organizations to develop a skilled workforce.
Investigating the Influence of Kolb’s Learning Cycle Embedded in Conversational Agents on Learning Outcomes.Becker, A.; Wambsganss, T. In ECIS 2024 Proceedings, p. 15. 2024.
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Skills in Flux – Challenges in AI-based Skills Management and Skills Profiles.Freise, Leonie Rebecca; Bretschneider, Ulrich; Oeste-Reiss, Sarah. In 19. Internationale Tagung der Wirtschaftsinformatik (Wi24). Würzburg, Germany, 2024.
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The changing world of work, driven by automation and digital tech-nologies, requires a workforce that continuously adapts its skills in order to be competitive and employable. This dynamic environment has fueled the demand for advanced skills management, with artificial intelligence (AI) playing a critical role in measuring and supporting individual skills development. This paper looks at AI-based competency profiles as a strategic tool for talent acquisition, reten-tion, and development and highlights their potential challenges. Using semi-structured interviews with experts from HR, education, and industry, we explore the multiple challenges of AI-based skills management from a theoretical, con-ceptual, and practical perspective. Our findings reveal complex problems at the individual, team, organizational, and systemic levels that form a basis for the de-velopment of effective AI-based skills management strategies. This research highlights the importance of using AI to foster an adaptable and skilled workforce that meets both current needs and future challenges.
Nachhaltige Intelligenz–intelligente Nachhaltigkeit: Transdisziplinäre Forschungsperspektiven.Hornung, G.; Blättel-Mink, B.; Helmke, J. T.; Döben-Henisch, G.-D.; Lamla, J.; Limberger, V.; Ohde, F.; Reß, B.; Schrader, C.; Söllner, M. 2024.
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Nachhaltigkeit und Künstliche Intelligenz sind zwei der Megathemen unserer Zeit. Sie werfen schon je für sich komplexe Herausforderungen wissenschaftlicher und praktischer Art auf, die schon jetzt stark und immer weiter zunehmend Politik, Wirtschaft und Alltagsleben erfassen. Dem vorliegenden Whitepaper liegt die Überzeugung der Autor*innen zugrunde, dass wir trotz der jeweiligen Komplexität Nachhaltigkeit und Künstliche Intelligenz in ihren Wechselwirkungen beobachten und analysieren müssen, weil eine Trennung angesichts der vielfältigen Verflechtungen künstlich wäre und Gefahr liefe, wesentliche Problemlagen, aber auch Handlungsoptionen zu übersehen.
Varieties of Valuation. Rahmungen, Aushandlungen und Widersprüche digitaler Bewertungspraktiken. Krenn, Karoline; Kropf, Jonathan; Laser, Stefan; Ochs, Carsten. VS, Wiesbaden, 2024.
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Influence of Background Color on 6D Pose Tracking Accuracy.Hubert, Andreas; Doll, Konrad; Sick, Bernhard. In International Conference on Engineering and Emerging Technologies (ICEET), pp. 1–6. IEEE, 2024.
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Fast 6D pose tracking is a critical component in numerous applications ranging from robotics to augmented reality. A notable method for addressing this challenge involves simulating the last known pose and comparing it with the current one, a process central to the SE(3)-TrackNet approach, which is known for its reliability. Traditionally, this method employs a uniform black background for the simulated input. This study challenges the standard practice by demonstrating that the choice of background color can significantly influences the accuracy of 6D pose estimation. Through a series of experiments, we provide results showing that background color is a critical factor for the effectiveness of the SE(3) TrackNet approach.
Governing the Crowd: Developing Reference Process Modules for the Governance of the Crowd on Online Labour Platforms.Hupe, Anna; Lange, Kirsten; Bretschneider, Ulrich; Refflinghaus, Robert. In International Working Seminar on Production Economics (IWSPE). Innsbruck, Austria, 2024.
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Fast Fishing: Approximating BAIT for Efficient and Scalable Deep Active Image Classification.Huseljic, Denis; Hahn, Paul; Herde, Marek; Rauch, Lukas; Sick, Bernhard. In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD), pp. 280–296. 2024.
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Deep active learning (AL) seeks to minimize the annotation costs for training deep neural networks. \\textsc{Bait, a recently proposed AL strategy based on the Fisher Information, has demonstrated impressive performance across various datasets. However, \\textsc{Bait's high computational and memory requirements hinder its applicability on large-scale classification tasks, resulting in current research neglecting \\textsc{Bait in their evaluation. This paper introduces two methods to enhance \\textsc{Bait's computational efficiency and scalability. Notably, we significantly reduce its time complexity by approximating the Fisher Information. In particular, we adapt the original formulation by i) taking the expectation over the most probable classes, and ii) constructing a binary classification task, leading to an alternative likelihood for gradient computations. Consequently, this allows the efficient use of \\textsc{Bait on large-scale datasets, including ImageNet. Our unified and comprehensive evaluation across a variety of datasets demonstrates that our approximations achieve strong performance with considerably reduced time complexity. Furthermore, we provide an extensive open-source toolbox that implements recent state-of-the-art AL strategies, available at \\url{https://github.com/dhuseljic/dal-toolbox.
Engaging Minds – How Gamified Chatbots can Support and Motivate Learners in Digital Education.Benner, Dennis; Schöbel, Sofia; Janson, Andreas; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). Waikiki, Hawaii, USA, 2024.
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Blended and online learning is growing, and self-regulated learning is becoming more relevant. Most often, students struggle with organizing their own learning processes, lose focus or procrastinate. Keeping learners motivated and engaged can be a real challenge. Therefore, we present gamified chatbots as a potential solution. On the one hand, chatbots can provide a more engaging learning experience. On the other hand, gamification can provide motivational incentives to keep learners engaged and motivated. So far, not many studies have elaborated on how gamification can be effectively used to make a chatbot interaction more engaging or improve the learning experience. This study uses an experimental approach to distinguish how a combination of badges and a progress bar can support and motivate learners to stay engaged with their learning activities. We elaborate on the effects of gamified chatbots and support practitioners with guidance on how to design gamified chatbots in education.
Systematic Evaluation of Uncertainty Calibration in Pretrained Object Detectors.Huseljic, Denis; Herde, Marek; Hahn, Paul; Müjde, Mehmet; Sick, Bernhard. In International Journal of Computer Vision, 133(3), pp. 1033–1047. Springer, 2024.
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In the field of deep learning based computer vision, the development of deep object detection has led to unique paradigms (e.g., two-stage or set-based) and architectures (e.g., Faster-RCNN or DETR) which enable outstanding performance on challenging benchmark datasets. Despite this, the trained object detectors typically do not reliably assess uncertainty regarding their own knowledge, and the quality of their probabilistic predictions is usually poor. As these are often used to make subsequent decisions, such inaccurate probabilistic predictions must be avoided. In this work, we investigate the uncertainty calibration properties of different pretrained object detection architectures in a multi-class setting. We propose a framework to ensure a fair, unbiased, and repeatable evaluation and conduct detailed analyses assessing the calibration under distributional changes (e.g., distributional shift and application to out-of-distribution data). Furthermore, by investigating the influence of different detector paradigms, post-processing steps, and suitable choices of metrics, we deliver novel insights into why poor detector calibration emerges. Based on these insights, we are able to improve the calibration of a detector by simply finetuning its last layer.
Using Machine Learning for Optical Spectroscopy Data Analysis - Processing Multiple Spatially Resolved Reflection Spectroscopy Data with Continuous Feature Networks. Magnussen, Birk Martin. kassel university press, 2024.
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Living a healthy lifestyle is an ever-increasing priority. To facilitate such a healthy lifestyle, accurate, quick, and inexpensive feedback on diet quality is essential. Sensors based on multiple spatially resolved reflection spectroscopy aim to provide such feedback. However, current data processing algorithms require highly accurate hardware. This requirement for accuracy causes production costs of the sensors to be too expensive, while the application scope is too small to be viable for end-customers. In order to keep production costs low, new algorithms capable of handling production inaccuracies need to be developed. This thesis proposes such a novel neural network architecture called a continuous feature network. In addition to being well suited for the sensor data at hand, continuous feature networks are capable of compensating for sensor inaccuracies. A continuous feature network is also capable of predicting results from an input sample with partially missing data, allowing it to ignore certain production defects. In this thesis, continuous feature networks are proposed, implemented, trained, and investigated using real-world sensor data. To improve training, a novel method for semi-supervised learning based on the available datasets is introduced and evaluated. Based on the ability of the continuous feature network to operate on partially missing data, a novel explainable AI method is introduced, allowing to accurately quantify possible error sources for a measurement. The newly introduced methods are applied to the processing of sensor data, relaxing the requirement for highly accurate sensor hardware while increasing prediction accuracy. This enables a significant reduction in production rejects and thus sensor cost, while also allowing for the detection and prediction of new vitality parameters.
Adaptive Shapley: Using Explainable AI with Large Datasets to Quantify the Impact of Arbitrary Error Sources.Magnussen, Birk Martin; Jessulat, Maik; Stern, Claudius; Sick, Bernhard. In International Conference on Big Data Analytics (ICBDA), pp. 305–310. IEEE, 2024.
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Almost all sensors suffer from some level of uncertainty introduced from production inaccuracies. When the sensor data is processed by machine learning, quantifying the impact of such production inaccuracies on the output of the machine learning model becomes difficult. Certain neural network architectures, such as continuous feature networks, allow individual features and data to be omitted while still being able to correctly predict the result without the need for retraining. Such features can, for example, be individual channels of a sensor. This article proposes a method to use the capability to omit arbitrary features or sensor channels to calculate Shapley values for each sensor channel. These Shapley values represent the contribution of each individual channel to the measurement. They are defined using an arbitrary function called the ``value function''. If the value function is defined as the error of the current measurement, the Shapley values will represent the contribution of each sensor channel to the error of the measurement result. By calculating Shapley values like this for a large unlabelled dataset of measurements, it is possible to understand how much measurement error was introduced by which channel of which sensor in each measurement. Averaging the Shapley values for each sensor in the dataset will then result in a metric for each channel of that sensor, which represents a contribution to measurement errors. By comparing these values to any arbitrary quality metrics for the sensor channels obtained in a calibration process or similar step, it is possible to correlate and quantify which value in the quality metric will cause how much of a measurement error, or whether the quality metric is even relevant for the measurement accuracy. This article will show the efficacy and use case of the method on an example of the production and quality control of optical sensors based on multiple spatially resolved reflection spectroscopy.
Rechtliche und technische Herausforderungen von Privatheit in Big-Data-Verarbeitungssystemen.Hornung, G.; Schaller, T.; Selzer, A.; Stummer, S. In Kommunikation & Recht 2024, pp. 187–192. 2024.
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Peer Review Report For: Co-creation of the Digital Democracy and Data Commons Manifesto: alternative sociotechnical visions of data [version 2; peer review: 3 approved, 1 approved with reservations, 1 not approved].Draude, Claude. In Open Res Europe, 4(45). 2024.
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Exploring Individuals’ Psychological Factors as Predictors of Workforce Agility in Software Development Teams.Geffers, Kristin; Bretschneider, Ulrich; Eilers, Karen. In International Conference on Information Systems (ICIS). Bangkok, Thailand, 2024.
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In the rapidly evolving automotive sector, software development teams (SDTs) face the challenge of swiftly adapting to unpredictable changes driven by globalization, customer expectations, and innovation. This study delves into the influence of psychological factors — particularly attitudes, emotions, and perceptions — on the workforce agility of employees working in SDTs, crucial for adeptly navigating dynamic shifts. Despite the central role of psychological factors in shaping behavior, existing research overlooks their impact on workforce agility. Through interviews with 27 employees from a leading software company serving the automotive industry, we empirically identified three key factors: agile mindset, psychological empowerment, and agile leadership. Subsequently, drawing upon the literature, we explore the correlations among these factors. By investigating these previously unexplored psychological predictors and their correlations, this study enriches our understanding of workforce agility and provides actionable insights for SDT leaders to nurture desired behaviors.
Conceptual Mapping of Controversies.Draude, Claude; Dürrschnabel, Dominik; Hirth, Johannes; Horn, Viktoria; Kropf, Jonathan; Lamla, Jörn; Stumme, Gerd; Uhlmann, Markus. In Conceptual Knowledge Structures, Vol. 14914, I. P. Cabrera, S. Ferré, S. Obiedkov (eds.), pp. 201–216. Springer Nature Switzerland, Cham, 2024.
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With our work, we contribute towards a qualitative analysis of the discourse on controversies in online news media. For this, we employ Formal Concept Analysis and the economics of conventions to derive conceptual controversy maps. In our experiments, we analyze two maps from different news journals with methods from ordinal data science. We show how these methods can be used to assess the diversity, complexity and potential bias of controversies. In addition to that, we discuss how the diagrams of concept lattices can be used to navigate between news articles.
Location based Probabilistic Load Forecasting of EV Charging Sites: Deep Transfer Learning with Multi-Quantile Temporal Convolutional Network.Ali, Mohammad Wazed; Mustafa, Mohammed Asif bin; Shuvo, Md. Aukerul Moin; Sick, Bernhard. In arXiv e-prints, p. arXiv:2409.11862. 2024.
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Electrification of vehicles is a potential way of reducing fossil fuel usage and thus lessening environmental pollution. Electric Vehicles (EVs) of various types for different transport modes (including air, water, and land) are evolving. Moreover, different EV user groups (commuters, commercial or domestic users, drivers) may use different charging infrastructures (public, private, home, and workplace) at various times. Therefore, usage patterns and energy demand are very stochastic. Characterizing and forecasting the charging demand of these diverse EV usage profiles is essential in preventing power outages. Previously developed data-driven load models are limited to specific use cases and locations. None of these models are simultaneously adaptive enough to transfer knowledge of day-ahead forecasting among EV charging sites of diverse locations, trained with limited data, and cost-effective. This article presents a location-based load forecasting of EV charging sites using a deep Multi-Quantile Temporal Convolutional Network (MQ-TCN) to overcome the limitations of earlier models. We conducted our experiments on data from four charging sites, namely Caltech, JPL, Office-1, and NREL, which have diverse EV user types like students, full-time and part-time employees, random visitors, etc. With a Prediction Interval Coverage Probability (PICP) score of 93.62%, our proposed deep MQ-TCN model exhibited a remarkable 28.93% improvement over the XGBoost model for a day-ahead load forecasting at the JPL charging site. By transferring knowledge with the inductive Transfer Learning (TL) approach, the MQ-TCN model achieved a 96.88% PICP score for the load forecasting task at the NREL site using only two weeks of data.
Data Sharing – Datenkapitalismus by Default?Friedewald, M.; Roßnagel, A.; Geminn, C.; Karaboga, M.; Schindler, S. Nomos Verlagsgesellschaft, Baden-Baden, 2024.
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Generative AI for Banks: Benchmarks and Algorithms for Synthetic Financial Transaction Data.Karst, Fabian Sven; Chong, Sook-Yee; Antenor, Abigail A.; Lin, Enyu; Li, Mahei Manhai; Leimeister, Jan Marco. In Workshop on Information Technologies and Systems (WITS). Bangkok, Thailand, 2024.
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The banking sector faces challenges in using deep learning due to data sensitivity and regulatory constraints, but generative AI may offer a solution. Thus, this study identifies effective algorithms for generating synthetic financial transaction data and evaluates five leading models - Conditional Tabular Generative Adversarial Networks (CTGAN), DoppelGANger (DGAN), Wasserstein GAN, Financial Diffusion (FinDiff), and Tabular Variational AutoEncoders (TVAE) - across five criteria: fidelity, synthesis quality, efficiency, privacy, and graph structure. While none of the algorithms is able to replicate the real data's graph structure, each excels in specific areas: DGAN is ideal for privacy-sensitive tasks, FinDiff and TVAE excel in data replication and augmentation, and CTGAN achieves a balance across all five criteria, making it suitable for general applications with moderate privacy concerns. As a result, our findings offer valuable insights for choosing the most suitable algorithm.
Conceptual Mapping of Controversies.Draude, Claude; Dürrschnabel, Dominik; Hirth, Johannes; Horn, Viktoria; Kropf, Jonathan; Lamla, Jörn; Stumme, Gerd; Uhlmann, Markus. In Conceptual Knowledge Structures, I. P. Cabrera, S. Ferré, S. Obiedkov (eds.), pp. 201–216. Springer Nature Switzerland, Cham, 2024.
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With our work, we contribute towards a qualitative analysis of the discourse on controversies in online news media. For this, we employ Formal Concept Analysis and the economics of conventions to derive conceptual controversy maps. In our experiments, we analyze two maps from different news journals with methods from ordinal data science. We show how these methods can be used to assess the diversity, complexity and potential bias of controversies. In addition to that, we discuss how the diagrams of concept lattices can be used to navigate between news articles.
Poster: Web Dependency Analyzer to Identify Resource Dependencies and their Impact on Rendering.Alhamwy, Yasin; Mertens, Paul; Hohlfeld, Oliver. In Proceedings of the 2024 ACM on Internet Measurement Conference, of IMC ’24, pp. 793–794. Association for Computing Machinery, Madrid, Spain, 2024.
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Modern websites are complex and fetch content from a multitude of different servers or domains. When measuring the complexity of the modern web, an open question is how content that is fetched from these domains contribute to the rendered output of the website. In this poster, we present the Web Dependency Analyzer, a tool that is designed to automatically infer the domains that a website depends on and further analyze the impact of each domain on the rendered output of the site. Our Web Dependency Analyzer instructs a headless web browser to infer the resource dependencies from a large set of input domains and outputs the visual impact of the unavailability of each domain.
Conceptualizing the Agile Mindset in Agile Software Development Teams.Geffers, Kristin; Bretschneider, Ulrich; Eilers, Karen. In International Conference on Wirtschaftsinformatik (WI 2024). Würzburg, Germany, 2024.
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Agile Software Development Teams (ASDTs) employ agile method-ologies to navigate the dynamic landscape of the software industry, responding effectively to constant change and innovation. The success of ASDTs relies sig-nificantly on the individuals’ mindset, referred to as the agile mindset (AM). Yet, a clear conceptualization of the AM remains elusive, as existing approaches do not meet scientific standards and fail to produce consistent results. This paper addresses this gap by systematically conceptualizing the AM within the context of ASDTs. Through a systematic review and evaluation of existing definitions and initial conceptualizations, we identify dimensions and consolidate insights, resulting in a comprehensive conceptualization of the AM. Our work represents a crucial step towards understanding the AM’s role in ASDTs and lays the foun-dation for our planned future work: the empirical validation and development of a standardized measurement instrument for the AM.
Enhancing Maritime Behaviour Analysis through Novel Feature Engineering and Digital Shadow Modelling: A Case Study in Kiel Fjord.Al-Falouji, Ghassan; Gao, Shang; Haschke, Lukas; Nowotka, Dirk; Tomforde, Sven. In International Conference on Architecture of Computing Systems (ARCS), pp. 97–111. Springer, 2024.
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With the continuous evolution of maritime technology, there is a growing need for analysing and modelling vessel behaviour in complex waterway systems. This paper presents an extension and utilisation of the Surface Vessel Nautical Behaviour Analysis (SV-NBA) framework for in-depth spatio-temporal analysis of maritime surface vessels’ behaviour in Kiel Fjord. Leveraging one year of collected Automatic Identification System (AIS) data, we extracted features from the recorded data. Three feature sets are generated and compared using expert-knowledge fea- tures, methods for feature selection, and Denoising Autoencoder latent space representation. Behaviour modelling and analysis utilises clustered data from the three feature sets, employing Gaussian Mixture Models (GMM). The trained GMM models serve as digital shadows, enabling storage-efficient representation of vessel behaviour and facilitates appli- cations such as online situational awareness and marine-traffic manage- ment. These digital shadows serve as observer-layer in a dynamic au- tonomous system of system, offering insights into maritime activities and enhancing navigation safety in busy waterways. This research contributes to the advancement of autonomous navigation systems and supports ef- ficient maritime traffic management strategies.
Valuation and digital Platforms.Kropf, J; Frisch, T. In The Routledge International Handbook of Valuation and Society, A. Krüger, T. Peetz, H. Schaefer (eds.), pp. 267–278. Routledge, London, 2024.
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Steering Towards Maritime Safety with True Motion Predictions Ensemble.Al-Falouji, Ghassan; Beyer, Tom; Gao, Shang; Tomforde, Sven. In Workshop on self-improving system integration (SISSY), ACSOS, pp. 7–12. IEEE, 2024.
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Maritime transportation is vital for global trade, yet safety challenges persist, especially with increasing vessel density and narrow waterways. The standard Closest Point of Approach (CPA) method, used to estimate collision risk, has limitations due to its reliance on constant Course Over Ground (COG) and Speed Over Ground (SOG) assumptions, neglecting dynamic vessel behaviours, true ship dimensions, and environmental influences. Addressing these limitations, this paper introduces an enhanced CPA (eCPA) method that counters these deficits by incorporating ship trajectory predictions, probabilistic risk assessment, and real-time data integration. The eCPA method includes user- adjustable tools for trajectory interpolation, prediction, and anomaly elimination, making it adaptable to various maritime scenarios. Extensive testing in encounter scenarios demonstrates the effectiveness of our approach in improving maritime safety through robust and probabilistic estimation of encounter points. This method aligns with the Self-Integration and Self-Organising Systems (SISSY) initiative, exhibiting how autonomous maritime operations can benefit from self-improving and self-integrating systems to enhance navigation safety and efficiency.
Verrechnung – Design – Kultivierung: Instrumentenkasten für die Gestaltung fairer Geschäftsmodelle durch Ko-Valuation. Technical Report (1), . Draude, Claude; Engert, Simon; Hess, Thomas; Hirth, Johannes; Horn, Viktoria; Kropf, Jonathan; Lamla, Jörn; Stumme, Gerd; Uhlmann, Markus; Zwingmann, Nina. M. Friedewald; A. Roßnagel; C. Geminn; M. Karaboga (eds.). Fraunhofer-Institut für System- und Innovationsforschung ISI, Karlsruhe, 2024.
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Ausgehend von der Beobachtung, dass gegenwärtige Herausforderungen der Datenökonomie neben der angemessenen Verwendung von Daten auch Aspekte der gerechten Verteilung von Erlösen, die Manipulation durch Algorithmen oder die Beeinflussung der politischen Meinungsbildung durch Plattformen betreffen, lotet das vorliegende White Paper Möglichkeiten der fairen Gestaltung datenökonomischer Geschäftsmodelle aus. Die erarbeiteten Instrumente und Analysen zur Unterstützung einer fairen Geschäftsmodellgestaltung basieren auf Ergebnissen des vom BMBF geförderten Projekts „Faire digitale Dienste: Ko-Valuation in der Gestaltung datenökonomischer Geschäftsmodelle (FAIRDIENSTE)“. Um ein analytisch gehaltvolles Fairness-Verständnis zu entwickeln, das auch für die konkrete datenökonomische Gestaltungspraxis innovative und wirtschaftlich tragfähige Alternativen zu gegenwärtigen Geschäftsmodellen freizulegen vermag, wurden in FAIRDIENSTE verschiedene Ansätze der kooperativen Wertvermittlung (im Folgenden auch „Ko-Valuation“) erprobt, die wir als Verrechnung, Design und Kultivierung bezeichnen: Erstens wurde untersucht, inwiefern sich unterschiedliche Werte in eine ökonomische Sprache der Preise übersetzen und fair verrechnen lassen (Verrechnung). Zweitens wurde herausgearbeitet, wie Wertkonflikte durch technische und regulative Designs kanalisiert werden können (Design). Drittens wurde geprüft, inwiefern die öffentliche Aushandlung von Wertkonflikten, z.B. über Social-Media-Elemente, gefördert werden kann, um zu einer Kultur der Fairness unter den Nutzerinnen und Nutzern beizutragen (Kultivierung). Diese Perspektiven wurden anhand der Fairness-Herausforderungen des digitalen Journalismus geschärft und auf ihre Tragfähigkeit geprüft. Darüber hinaus beanspruchen die folgenden Überlegungen und Instrumente zur fairen Geschäftsmodellgestaltung aber auch auf andere gesellschaftliche Domänen anwendbar zu sein.
Leading Teams in Today’s Dynamic Organizations: The Core Characteristics of Agile Leadership.Geffers, Kristin; Bretschneider, Ulrich; Eilers, Karen; Oeste-Reiß, Sarah. In Hawaii International Conference on System Sciences (HICSS). Waikiki, Hawaii, USA, 2024.
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Agile leadership (AL) is essential for leading agile transformations. So far, a conceptualization of AL is still lacking. To investigate its core characteristics, we conduct an exploratory single case study. Our study examines a senior executive training program within a young European automotive software company, with the objective of establishing AL throughout the organization. Our study’s primary findings reveal that AL can be categorized into five perspectives: person-based, purpose-based, result-based, position-based, and process-based. Agile leaders are humble, adaptable, visionary, and engaged. AL focuses on aligning employees with a clear vision, fostering a learning organization, increasing transparency, and establishing decision-making in teams. It is practiced by executives, agile accountabilities, and team members. Agile leaders operate as experimenters, collaborators, facilitators, enablers, and resilient leaders. Our findings provide a foundational basis for organizations to implement AL, thereby enhancing their adaptability and overall success.
Entrepreneurial Self-Efficacy and Team Processes: Unraveling the Dynamics in Early-Stage Ventures.Friedrichs, Juliane; Ohly, Sandra. In Academy of Management Proceedings, 2024(1), p. 18283. 2024.
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Nachhaltige Intelligenz – intelligente Nachhaltigkeit: transdisziplinäre Forschungsperspektiven. Whitepaper. Hornung, Gerrit; Blättel-Mink, Birgit; Helmke, Jan Torben; Döben-Henisch, Gerd-Dietrich; Lamla, Jörn. Vol. 17. Kassel University Press, Kassel, 2024.
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The Birkhoff Completion of Finite Lattices.Abdulla, Mohammad; Hirth, Johannes; Stumme, Gerd. In Conceptual Knowledge Structures, I. P. Cabrera, S. Ferré, S. Obiedkov (eds.), pp. 20–35. Springer Nature Switzerland, Cham, 2024.
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We introduce the Birkhoff completion as the smallest distributive lattice in which a given finite lattice can be embedded as semi-lattice. We discuss its relationship to implicational theories, in particular to R. Wille's simply-implicational theories. By an example, we show how the Birkhoff completion can be used as a tool for ordinal data science.
Werten und Bewerten (Literaturbesprechung: Krüger, Anne K., Soziologie des Wertens und Bewertens. Einsichten. Themen der Soziologie (utb). Bielefeld: transcript 2022).Kropf, J. In Kölner Zeitschrift für Soziologie und Sozialpsychologie, 76(2), pp. 233–236. 2024.
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FinDEx: A Synthetic Data Sharing Platform for Financial Fraud Detection.Karst, Fabian; Li, Mahei Manhai; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). University of Hawaiʻi at Mānoa, Waikiki, Hawaii, USA, 2024.
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The rising number of financial frauds inflicted in the last year more than 800 billion USD in damages on the global economy. Although financial institutions possess advanced AI systems for fraud detection, the time required to accumulate a sufficient volume of fraudulent data for training models creates a costly vulnerability. Combined with the inability to share fraud detection training data among institutions due to data and privacy regulations, this poses a major challenge. To address this issue, we propose the concept of a synthetic data-sharing ecosystem platform (FinDEx). This platform ensures data anonymity by generating synthesized training data based on each institution's fraud detection datasets. Various synthetic data generation techniques are employed to rapidly construct a shared dataset for all ecosystem members. Using design science research, this paper leverages insights from financial fraud detection literature, data sharing practices, and modular systems theory to derive design knowledge for the platform architecture. Furthermore, the feasibility of using different data generation algorithms such as generative adversarial networks, variational auto encoder and Gaussian mixture model was evaluated and different methods for the integration of synthetic data into the training procedure were tested. Thus, contributing to the theory at the intersection between fraud detection and data sharing and providing practitioners with guidelines on how to design such systems.
Öffentliche Register im Internet und Datenschutz.Johannes, P.C. In Der Betrieb, pp. 2947–2950. 2024.
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Disentangling the influence of mobile learning usability and its determinants–PLS-SEM and importance-performance investigation.Janson, Andreas; Ernst, Sissy-Josefina. In Computers and Education Open (CAEO), 7(December). 2024.
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Today, numerous mobile learning applications are used to enable learning during the working process or on-the-go. However, few insights that are available regarding mobile application usability (MAU) and its determinants in the context of mobile learning. More specifically, there is a critical need to disentangle the determinants of MAU and their overall impact on MAU while also acknowledging the possible motivational consequences. Therefore, we developed a theoretical model of MAU, its determinants, and its consequences. By utilizing a free simulation experiment, we investigated the role of MAU in the domain of mobile learning. We used structural equation modeling to analyze the theoretical model. The results show a significant influence of MAU on mobile learning compatibility, performance expectancy, and self-efficacy. The results also indicate that compatibility acts as a partial mediator of usability on performance expectancy. Finally, we conducted an importance-performance analysis that reveals key usability insights: UI output, the most critical factor, underperforms, highlighting a major improvement area. UI structure and application design also need enhancement. In contrast, UI input and application utility perform well despite lower importance, with UI graphics showing adequate performance despite being least crucial. The present paper contributes to the discussion concerning MAU and its impact on mobile learning, while delivering formative insights of MAU for mobile learning applications.
The Ladder of Data Citizen Participation: A Sociotechnical Lens for Designing Democratic Digital Services in the Data Economy.Horn, Viktoria; Draude, Claude. In Interacting with Computers. Oxford University Press (OUP), 2024.
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Wenn die Datengenossenschaft für mich einwilligt: Zum speziellen Datenvermittlungsdienst nach DGA.Johannes, P. C.; Nebel, M. In Data Sharing – Datenkapitalismus by Default?, M. Friedewald, A. Roßnagel, C. Geminn, M. Karaboga, S. Schindler (eds.), pp. 75–94. Nomos, Baden-Baden, 2024.
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Capturing Nonlinear Electron Dynamics with Fully Characterised Attosecond X-ray Pulses.Funke, Lars; Ilchen, Markus; Dingel, Kristina; Mazza, Tommaso; Mullins, Terence; Otto, Thorsten; Rivas, Daniel; Savio, Sara; Serkez, Svitozar; Walter, Peter; Wieland, Niclas; Wülfing, Lasse; Bari, Sadia; Boll, Rebecca; Braune, Markus; Calegari, Francesca; De Fanis, Alberto; Decking, Winfried; Duensing, Andreas; Düsterer, Stefan; Ehresmann, Arno; Erk, Benjamin; Ferreira de Lima, Danilo Enoque; Galler, Andreas; Geloni, Gianluca; Grünert, Jan; Guetg, Marc; Grychtol, Patrik; Hans, Andreas; Held, Arne; Hindriksson, Ruda; Inhester, Ludger; Jahnke, Till; Laksman, Joakim; Larsson, Mats; Liu, Jia; Marangos, Jon P.; Marder, Lutz; Meier, David; Meyer, Michael; Mirian, Najmeh; Ott, Christian; Passow, Christopher; Pfeifer, Thomas; Rupprecht, Patrick; Schletter, Albert; Schmidt, Philipp; Scholz, Frank; Schott, Simon; Schneidmiller, Evgeny; Sick, Bernhard; Son, Sang-Kil; Tiedtke, Kai; Usenko, Sergey; Wanie, Vincent; Wurzer, Markus; Yurkov, Mikhail; Zhaunerchyk, Vitali; Helml, Wolfram. In arXiv e-prints, p. arXiv:2408.03858. 2024.
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Attosecond X-ray pulses are the key to studying electron dynamics at their natural time scale involving specific electronic states. They are promising to build the conceptual bridge between physical and chemical photo-reaction processes. Free-electron lasers have demonstrated their capability of generating intense attosecond X-ray pulses. However, harnessing them for time-resolving experiments and investigations of nonlinear X-ray absorption mechanisms remains a cutting-edge challenge. We have characterised X-ray pulses with durations of down to 700attoseconds and peak powers up to 200GW at ∼ 1keV photon energy via angular streaking at the SQS instrument of the European XFEL. As direct application, we present results of nonlinear X-ray-matter interaction via state-specific spectroscopy on a transient system. Using the derived spectral and temporal information of each pulse, we deliberately steer the probability for formation of double-core vacancies in neon gas atoms through excitation or ionisation of the second inner-shell electron after K-shell ionisation. Our results advance the field of attosecond science with highly intense and fully characterised X-ray pulses to the site-specific investigation of electronic motion in transient media.
Professionalisierung im Verbraucherschutz. Jahrbuch Konsum & Verbraucherwissenschaften 2023/2024. Bala, Christian; Boden, Alexander; Lamla, Jörn; Stevens, Gunnar; Schuldzinski, Wolfgang. Verbraucherzentrale, Düsseldorf, 2024.
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Stairway to heaven or highway to hell: A model for assessing cognitive automation use cases.Engel, Christian; Elshan, Edona; Ebel, Philipp; Leimeister, Jan Marco. In Journal of Information Technology (JIT), 39(1), pp. 94–122. 2024.
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Cognitive automation (CA) moves beyond rule-based business process automation to target cognitive knowledge and service work. This allows the automation of tasks and processes, for which automation seemed unimaginable a decade ago. To organizations, these CA use cases offer vast opportunities to gain a significant competitive advantage. However, CA imposes novel challenges on organizations’ decisions regarding the automation potential of use cases, resulting in low adoption and high project failure rates. To counteract this, we draw on an action research study with a leading European manufacturing company to develop and test a model for assessing use cases’ amenability to CA. The proposed model comprises four dimensions: cognition, data, relationship, and transparency requirements. The model proposes that a use case is less (more) amenable to CA if these requirements are high (low). To account for the model’s industry-agnostic generalizability, we draw on an internal evaluation within the action research company and three additional external evaluations undertaken by independent project teams in three distinct industries. From a practice perspective, the model will help organizations make more informed decisions in selecting use cases for CA and planning their respective initiatives. From a research perspective, the identified determinants affecting use cases’ amenability to CA will enhance our understanding of CA in particular and artificial intelligence as the driving force behind CA in general.
Optical Detection of the Body Mass Index and Related Parameters Using Multiple Spatially Resolved Reflection Spectroscopy.Magnussen, Birk Martin; Möckel, Frank; Jessulat, Maik; Stern, Claudius; Sick, Bernhard. In International Conference on Bioinformatics and Computational Biology (ICBCB), pp. 132–136. IEEE, 2024.
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Obesity is a common problem for many people. In order to assist people combating obesity, providing methods to quickly, easily, and inexpensively assess their body composition is important. This article investigates how noninvasive, optical sensors based on multiple spatially resolved reflection spectroscopy can be used to measure the body mass index and body composition parameters. Using machine learning to train continuous feature networks, it is possible to predict the body mass index of a subject, with a correlation of $$R=0.61$$ with $$p<0.0001$$. Similarly, the predicted body mass index shows correlations to both the subject's visceral fat ($$R=0.44,p=0.0023$$) and skeletal muscle mass index ($$R=0.52,p=0.0003$$), indicating that the trained neural network is capable of identifying both types of tissue. Strategies to independently detect either type of tissue are discussed.

2023[ to top ]

Spatio-Temporal Attention Graph Neural Network for Remaining Useful Life Prediction.Huang, Zhixin; He, Yujiang; Sick, Bernhard. In Computational Science and Computational Intelligence (CSCI), pp. 99–105. IEEE, 2023.
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RUL prediction plays a crucial role in the health management of industrial systems. Given the increasing complexity of systems, data-driven predictive models have attracted significant research interest. Upon reviewing the existing literature, it appears that many studies either do not fully integrate both spatial and temporal features or employ only a single attention mechanism. Furthermore, there seems to be inconsistency in the choice of data normalization methods, particularly concerning operating conditions, which might influence predictive performance. To bridge these observations, this study presents the Spatio-Temporal Attention Graph Neural Network. Our model combines graph neural networks and temporal convolutional neural networks for spatial and temporal feature extraction, respectively. The cascade of these extractors, combined with multihead attention mechanisms for both spatio-temporal dimensions, aims to improve predictive precision and refine model explainability. Comprehensive experiments were conducted on the CMAPSS dataset to evaluate the impact of unified versus clustering normalization. The findings suggest that our model performs state-of-the-art results using only the unified normalization. Additionally, when dealing with datasets with multiple operating conditions, cluster normalization enhances the performance of our proposed model by up to 27%.
What Does Really Count? Estimating Relevance of Corner Cases for Semantic Segmentation in Automated Driving.Breitenstein, Jasmin; Heidecker, Florian; Lyssenko, Maria; Bogdoll, Daniel; Bieshaar, Maarten; Zöllner, J. Marius; Sick, Bernhard; Fingscheidt, Tim. In Workshop on roBustness and Reliability of Autonomous Vehicles in the Open-world (BRAVO), ICCV, pp. 3991–4000. 2023.
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In safety-critical applications such as automated driving, perception errors may create an imminent risk to vulnerable road users (VRU). To mitigate the occurrence of unexpected and potentially dangerous situations, so-called corner cases, perception models are trained on a huge amount of data. However, the models are typically evaluated using task-agnostic metrics, which do not reflect the severity of safety-critical misdetections. Consequently, misdetections with particular relevance for the safe driving task should entail a more severe penalty during evaluation to pinpoint corner cases in large-scale datasets. In this work, we propose a novel metric IoUw that exploits relevance on the pixel level of the semantic segmentation output to extend the notion of the intersection over union (IoU) by emphasizing small areas of an image affected by corner cases. We (i) employ IoUw to measure the effect of pre-defined relevance criteria on the segmentation evaluation, and (ii) use the relevance-adapted IoUw to refine the identification of corner cases. In our experiments, we investigate vision-based relevance criteria and physical attributes as per-pixel criticality to factor in the imminent risk, showing that IoUw precisely accentuates the relevance of corner cases.
Automized Assessment for Professional Skills – A Systematic Literature Review and Future Research Avenues.Freise, Leonie Rebecca; Bretschneider, Ulrich. In Internationale Tagung Wirtschaftsinformatik (WI). Paderborn, Germany, 2023.
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Globalization, technological progress, and demographic trends increasingly influence our labor markets. With changing labor markets and increasing digitalization, new competencies of workers are needed to meet demands. However, as a first step to developing these new skills, knowledge about the existing skills and their status quo is necessary. Here, automated skill assessment offers a crucial added value, as it can create a reliable and objective database. Based on a systematic investigation, our analysis shows, in four different areas, how skills and competencies in the automated assessment are (1) defined, (2) included as an element of analysis, (3) methodically recorded and processed, (4) which data source is used. In doing so, we offer insights into existing approaches to automated assessment of professional skills. We contribute to a better under-standing of the design of automated skill assessment methods and provide perspectives on future research directions.
Is that even legal? – A guide for builders experimenting with data governance in Germany. Geminn, Christian; Johannes, Paul C.; Müller, Johannes K.M.; Nebel, Maxi. Mozilla, 2023.
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Machine Learning Supported Optimisation and Experimental Evaluation of Electrical Motors for Small Urban Passenger Vehicles.Botache, Diego. In Organic Computing -- Doctoral Dissertation Colloquium 2023, S. Tomforde, C. Krupitzer (eds.), pp. 14–26. kassel university press, 2023.
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The increasing environmental pollution and rising global energy demands require the rapid development of novel and sustainable traction machines from urban transport up to large-scale transport vehicles. The optimisation of the development cycle of electrical traction machines plays a vital role in sustainable mobility. Still, developers have to face the difficulty of analysing time-consuming multiphysics simulations to assess the performance of many prototype variants. Accelerating this process involves implementing machine learning-supported strategies that can effectively acquire results and predictions about the performance and efficiency of prototypes in an iterative optimisation process and detect possible issues during the experimental procedure. The following research project streamlines the development cycle by identifying and presenting multiple strategies for applying and evaluating machine learning and deep learning techniques in different stages and areas in the development cycle including self-optimisation and self-adaptation capabilities. By implementing these strategies, the optimisation process can be further improved and become more efficient and robust, reducing the time and cost required for testing and validation. Therefore, this proposal addresses two application areas. The first area consists of the supported machine learning motor performance prediction at the topology design and optimisation stage of structural components. The second area corresponds to the machine learning-supported experimental evaluation process of prototypes at desired test benches.
Explaining the ghosts: Feminist intersectional XAI and cartography as methods to account for invisible labour.Klumbytė, Goda; Piehl, Hannah; Draude, Claude. 2023.
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Contemporary automation through AI entails a substantial amount of behind-the-scenes human labour, which is often both invisibilised and underpaid. Since invisible labour, including labelling and maintenance work, is an integral part of contemporary AI systems, it remains important to sensitise users to its role. We suggest that this could be done through explainable AI (XAI) design, particularly feminist intersectional XAI. We propose the method of cartography, which stems from feminist intersectional research, to draw out a systemic perspective of AI and include dimensions of AI that pertain to invisible labour.
Active Learning with Fast Model Updates and Class-Balanced Selection for Imbalanced Datasets.Huang, Zhixin; He, Yujiang; Herde, Marek; Huseljic, Denis; Sick, Bernhard. In Workshop on Interactive Adapative Learning (IAL), ECML PKDD, pp. 28–45. 2023.
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Active learning strategies aim to minimize the number of queried samples for model training. However, two challenges in pool-based deep active learning on imbalanced datasets are observed in experiments: (1) the declining performance of active learning strategies due to imbalanced class distribution; (2)~the lack of sample diversity in acquisition batches due to the absence of timely model updates. This paper proposes the AL-FaMoUS, a general solution combining fast model updates and class-balanced minibatch selection to the active learning process. Furthermore, a simplification of the AL-FaMoUS, which selects one single sample in each acquisition minibatch, is experimentally evaluated on four image and three time-series imbalanced datasets. The results demonstrate that the implemented AL-FaMoUS outperforms the other adopted AL strategies, including uncertainty sampling and BALD solely combined with either the fast model update or the class balance selection strategy, in terms of accuracy and Macro F1 score.
Data Governance in Germany – An Introduction. Technical Report (14, VIII), . Geminn, Christian; Johannes, Paul C.; Müller, Johannes; Nebel, Maxi. ITeG Technical Reports, kassel university press, 2023.
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Conceptual Views on Tree Ensemble Classifiers.Hanika, Tom; Hirth, Johannes. In International Journal of Approximate Reasoning, p. 108930. 2023.
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Random Forests and related tree-based methods are popular for supervised learning from table based data. Apart from their ease of parallelization, their classification performance is also superior. However, this performance, especially parallelizability, is offset by the loss of explainability. Statistical methods are often used to compensate for this disadvantage. Yet, their ability for local explanations, and in particular for global explanations, is limited. In the present work we propose an algebraic method, rooted in lattice theory, for the (global) explanation of tree ensembles. In detail, we introduce two novel conceptual views on tree ensemble classifiers and demonstrate their explanatory capabilities on Random Forests that were trained with standard parameters.
Considering Time: A Conceptual Model of Team Influences on Entrepreneurial Self-Efficacy Over Time.Friedrichs, J.; Ohly, S. In Academy of Management Proceedings, 2023(1), p. 18584. 2023.
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Transferring Digital Twin Technology on Employee Skills: A Framework to Support Human Resources.Freise, Leonie Rebecca; Hupe, Anna. In Academy of Management Annual Meeting (AOM). Boston, Massachusetts, USA, 2023.
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Skill assessment has become increasingly important in recent years. The shortage of skilled workers has demonstrated the need to identify suitable candidates for jobs and to develop existing employees. However, human resources processes rely on resumes, references, or job certifications to assess their employees’ skills. A few years ago, the concept of a digital twin was introduced, which is a digital replica of a physical entity. While using blockchain, the digital twin technology offers tremendous potential for transfer to other contexts. In the context of these considerations, we present a framework that allows the technology of the digital twin to be combined with that of skill assessment to create an enhanced skill profile. With a job market signaling perspective, we integrate knowledge about skills, clarify the opportunities of assessment, and develop a framework for a digital skill twin. In doing so, we argue that the multi-source and multi-method approach of such a digital skill twin leads to increased validity, reliability, and standardization. We thereby contribute to theory and practice by developing a new framework that offers employees to know their strengths and development potential and organizations to assess their employees’ skills.
Daten-Fairness in einer globalisierten Welt. Friedewald, M.; Roßnagel, A.; Neuburger, R.; Bieker, F.; Hornung, G. Nomos Verlagsgesellschaft, Baden-Baden, 2023.
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Unraveling the Complexity of Splitting Sequential Data: Tackling Challenges in Video and Time Series Analysis.Botache, Diego; Dingel, Kristina; Huhnstock, Rico; Ehresmann, Arno; Sick, Bernhard. In arXiv e-prints, p. arXiv:2307.14294. 2023.
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Splitting of sequential data, such as videos and time series, is an essential step in various data analysis tasks, including object tracking and anomaly detection. However, splitting sequential data presents a variety of challenges that can impact the accuracy and reliability of subsequent analyses. This concept article examines the challenges associated with splitting sequential data, including data acquisition, data representation, split ratio selection, setting up quality criteria, and choosing suitable selection strategies. We explore these challenges through two real-world examples: motor test benches and particle tracking in liquids.
Towards Feminist Intersectional XAI: From Explainability to Response-Ability.Klumbytė, Goda; Piehl, Hannah; Draude, Claude. 2023.
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This paper follows calls for critical approaches to computing and conceptualisations of intersectional, feminist, decolonial HCI and AI design and asks what a feminist intersectional perspective in HCXAI research and design might look like. Sketching out initial research directions and implications for explainable AI design, it suggests that explainability from a feminist perspective would include the fostering of response-ability - the capacity to critically evaluate and respond to AI systems - and would centre marginalised perspectives.
Kann sich künstliche Intelligenz selbst erklären? – Wie Erklärungen aus rechtswissenschaftlicher und ethischer Sicht gestaltet sein sollten und was Psychologie und Informatik dazu beitragen können. Horstmann, Aike; Krämer, Nicole; Geminn, Christian; Bile, Tamer; Weber, Carina; Manzeschke, Arne; Mavrina, Lina; Kopp, Stefan; Artelt, André; Hammer, Barbara. Universität Duisburg-Essen, 2023.
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Consumer Participation through Digital Review Practices? On the Sociology of the Infrastructures of Consumer Participation.Lamla, Jörn. In Consumer Policy from Below, K. Hellmann, A. Klein, B. Baule (eds.), pp. 81–93. Springer, Wiesbaden, 2023.
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Feminist epistemology for machine learning systems design.Klumbytė, Goda; Piehl, Hannah; Draude, Claude. 2023.
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This paper presents a series of feminist epistemological concepts as tools for developing critical, more accountable, and contextualised approaches to machine learning systems design. Namely, we suggest that the methods of situated knowledges or situating, figurations or figuring, diffraction or diffracting, and critical fabulation or speculation can be productively actualised in the field of machine learning systems design. We also suggest that the meta-method for doing this actualisation requires not so much translation but transposition - a creative and critical adaptation to speak to machine learning contexts.
Sharing Design Knowledge Through Codification in Interdisciplinary DSR Collaborations.Dickhaut, Ernestine; Janson, Andreas; Hevner, Alan; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). Maui, Hawaii, 2023.
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The goals of design science research (DSR) projects are to generate novel and useful artifacts and to produce rigorous and generalizable design knowledge. Often, DSR projects are conducted in collaborative, interdisciplinary project teams. Different disciplinary approaches to codifying design knowledge result in challenging project interactions. To study this situation, we analyze design knowledge codification in interdisciplinary teams over time. We gain insights from a survey of recent DSR papers that have been published in the AIS Senior Scholars’ Basket. We then present a detailed case study of a longitudinal project that brought to light issues of sharing design knowledge across disciplinary borders. Drawing from the survey and case study, we provide actionable guidance on how to effectively codify and share design knowledge to support researchers and practitioners to build useful artifacts and to make interdisciplinary design knowledge contributions reusable and applicable.
Role of Hyperparameters in Deep Active Learning.Huseljic, Denis; Herde, Marek; Hahn, Paul; Sick, Bernhard. In Workshop on Interactive Adaptive Learning (IAL), ECML PKDD, pp. 19–24. 2023.
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Despite considerable research on pool-based deep active learning (DAL), deploying DAL into real applications still has several challenges. A frequently neglected aspect is the choice of training hyperparameters (HPs), such as the learning rate. Since these HPs determine how the deep neural network learns in each cycle, they must be chosen carefully. In this article, we analyze the role of HPs in DAL. We find that optimizing HPs reduces the performance gap between DAL strategies. Conversely, we highlight challenges in finding optimal HPs when using datasets selected via DAL strategies.
Revolutionizing Crowdworking Campaigns: Conquering Adverse Selection and Moral Hazard with the Help of Smart Contracts.Hupe, Anna; Bretschneider, Ulrich. In International Conference on Information Systems (ICIS). Hyderabad, India, 2023.
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Crowdworking is increasingly being applied by companies to outsource tasks beyond their core competencies flexibly and cost-effectively to an unknown group. However, the anonymous and financially incentivized nature of crowdworkers creates information asymmetries and conflicts of interest, leading to inefficiencies and intensifying the principal-agent problem. Our paper offers a solution to the widespread problem of inefficient Crowdworking campaigns. We first derive the currently applied Crowdworking campaign process based on a qualitative study. Subsequently, we identify the broadest adverse selection and moral hazard problems in the process. We then analyze how the blockchain application of smart contracts can counteract those challenges and develop a process model that maps a Crowdworking campaign using smart contracts. We explain how our developed process significantly reduces adverse selection and moral hazard at each stage. Thus, our research provides approaches to make online labor more attractive and transparent for companies and online workers.
Hybrid Intelligence Service Support.Langes, Barbara; Peters, Christoph; Reinhard, Philipp; Li, Mahei Manhai; Hermann, Sophia; Katzenberger, Rebecca; Boes, Andreas; Leimeister, Jan Marco. In Innovationen für datenbasierte Wertschöpfung. Mit internetbasierten Dienstleistungen die Zukunft der Wirtschaft gestalten, B. Langes, C. Peters, A. Boes, J. M. Leimeister (eds.), pp. 37–49. ISF München, München, 2023.
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Gesundheits-Apps und Digitale Gesundheitsanwendungen (DiGAs) – Ethische, rechtliche, psychologische und informatische Perspektive. Artelt, André; Geminn, Christian; Hammer, Barbara; Horstmann, Aike; Krämer, Nicole; Manzeschke, Arne; Preuß, Antonia; Weber, Carina. Universität Duisburg-Essen, 2023.
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Privacy-Trade-offs: Zur Rolle technischer und regulativer Datenschutzinitiativen im Ökosystem des digitalen Journalismus.Engert, Simon; Kropf, Jonathan; Uhlmann, Markus. In Daten-Fairness in einer globalisierten Welt, M. Friedewald, A. Roßnagel, R. Neuburger, F. Bieker, G. Hornung (eds.), pp. 145–170. Nomos Verlagsgesellschaft, Baden-Baden, 2023.
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Integrating Multiple Logics by Design? Developing an Approach for Designing Digital Business Models.Engert, Simon; Horn, Viktoria; Draude, Claude; Hess, Thomas. In ACIS 2023 Proceedings. 2023.
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Current approaches to the design and development of digital business models (DBMs) overlook the multiple, and sometimes conflicting, logics of actors with which the focal firm seeks to co-create value. The lack of integrating stakeholders’ logics into DBMs has potentially detrimental and unintended ethical and social consequences. By collaboratively conducting an action research project with a digital publisher and drawing on participatory and value-sensitive design principles, we develop a novel approach for designing DBMs that integrates actors’ multiple logics by design. We contribute to literature by introducing a new approach highlighting DBMs’ inherent social aspects and furthering our understanding of multiple logics’ role in DBMs. Practitioners gain a concrete DBM design method preempting conflict.
On the Reliability of Automated Analysis of Fracture Surfaces Using a Novel Computer Vision-Based Tool.Engelhardt, Anna; Decke, Jens; Meier, David; Dulig, Franz; Ragunathan, Rishan; Wegener, Thomas; Sick, Bernhard; Niendorf, Thomas. In Advanced Engineering Materials, 25(21), p. 2300876. Wiley, 2023.
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Fracture surface analysis is of utmost importance with respect to structural integrity of metallic materials. This especially holds true for additively manufactured materials. Despite an increasing trend of automatization of testing methods, the analysis and classification of fatigue fracture surface images is commonly done manually by experts. Although this leads to correct results in most cases, it has several disadvantages, e.g., the need of a huge knowledge base to interpret images correctly. In present work, an unsupervised tool for analysis of overview images of fatigue fracture surface images is developed to support nonexperienced users to identify the origin of the fracture. The tool is developed using fracture surface images of additively manufactured Ti6Al4V specimens fatigued in the high-cycle-fatigue regime and is based on the identification of river marks. Several recording parameters seem to have no significant influence on the results as long as preprocessing settings are adapted. Moreover, it is possible to analyze images of other materials with the tool as long as the fracture surfaces contain river marks. However, special features like multiple origins or origins located in direct vicinity to the surface, e.g., caused by increased plastic strains, require a further tool development or alternative approaches.
Special Issue Editorial: Adaptive and Intelligent Gamification Design.Janson, Andreas; Schmidt-Kraepelin, Manuel; Schöbel, Sofia; Sunyaev, Ali. In AIS Transactions on Human-Computer Interaction (THCI), 15(2), pp. 136–145. 2023.
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This editorial provides an overview of the three accepted papers for the AIS THCI special issue on adaptive and intelligent gamification designs. The first paper examines conversational agents and how one can use gamification to make the design more engaging. The second study focuses on mobile fitness apps and analyzes the role that personality plays in apps and game designs. Finally, the third paper examines gamification in a virtual laboratory environment. Aligned with current work, we present future research directions that involve generative AI, the metaverse, and a shift in gamification research and practice in the future.
Informiertheit und Transparenz im Kontext digitaler Selbstvermessung.Böning, F.; Astfalk, S.; Sellung, R.; Laufs, U. In Daten-Fairness in einer globalisierten Welt, M. Friedewald, A. Roßnagel, R. Neuburger, F. Bieker, G. Hornung (eds.), pp. 247–273. Baden-Baden, 2023.
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Toward Social Role-Based Interruptibility Management.Anderson, Christoph; Heinisch, Judith Simone; Deldari, Shohreh; Salim, Flora; Ohly, Sandra; David, Klaus; Pejović, Veljko. In IEEE Pervasive Computing, 22(1), pp. 59–68. 2023.
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Disentangling Trust in Voice Assistants - A Configurational View on Conversational AI Ecosystems.Janson, Andreas; Schmitt, Anuschka; Bevilacqua, Tatjana. In Annual Meeting of the Academy of Management (AOM). Boston, Massachusetts, USA, 2023.
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Voice assistants’ (VAs) increasingly nuanced and natural communication via artificial intelligence (AI) opens up new opportunities for the experience of users, providing task assistance and automation possibilities, and also offer an easy interface to digital services and ecosystems. However, VAs and according ecosystems face various problems, such as low adoption and satisfaction rates as well as other negative reactions from users. Companies, therefore, need to consider what contributes to user satisfaction of VAs and related conversational AI ecosystems. Key for conversational AI ecosystems is the consideration of trust due to their agentic and pervasive nature. Nonetheless, due to the complexity of conversational AI ecosystems and different trust sources involved, we argue that we need a more detailed understanding about trust. Thus, we propose a configurational view on conversational AI ecosystems that allows us to disentangle the complex and interrelated factors that contribute to trust in VAs. We examine with a configurational approach and a survey study, how different trust sources contribute to the outcomes of conversational AI ecosystems, i.e., in our case user satisfaction. The results of our study show four distinct patterns of trust source configurations. Vice versa, we show how trust sources contribute to the absence of the outcome, i.e., user satisfaction. The derived implications provide a configurative theoretical understanding for the role of trust sources for user satisfaction that provides practitioners useful guidance for more trustworthy conversational AI ecosystems.
Faster, Cheaper, Better? Analyzing how Lowcode Developoment Platforms drive Bottom-Up Innovation.Elshan, Edona; Germann, Dominic; Dickhaut, Ernestine; Li, Mahei Manhai. In European Conference on Information Systems (ECIS). Kristiansand, Norway, 2023.
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Recent years have seen a growing adoption of Low Code Development Platforms (LCDPs) in organizations. The increasing affinity for technology development across all user groups, consumerization of development, and advancing digitalization are opening up a new target group for the low code movement. This change in software development allows bottom-up user innovators within a company to leverage their domain knowledge and quickly deploy much-needed digital services. However, a clear understanding of this paradigm of software development in organizations and the influence on end-user acceptance is still missing. In this paper, we present the results of an interview study conducted with 18 LCDP experts and discuss the implications of our findings, highlighting the role of LCDPs and context in bottom-up innovation as well as user-centricity. Our research contributes to the literature on LCDPs and offers valuable insights for organizations looking to leverage their workforce's innovative potential.
Abschreckungseffekte und Überwachungsgefühl im Datenschutzrecht. Auswirkungen auf betroffene Personen.Büscher, M.; Gutjahr, A.; Hornung, G.; Schindler, S.; Selzer, A.; Spiecker gen. Döhmann, I.; Stummer, S.; Wilmer, T.; Zurawski, P. In Datenschutz und Datensicherheit, 2023, pp. 503–512. 2023.
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Context-aware recommendations for extended electric vehicle battery lifetime.Eider, Markus; Sick, Bernhard; Berl, Andreas. In Sustainable Computing: Informatics and Systems (SUSCOM), 37, p. 100845. Elsevier, 2023.
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Electric vehicles are a means of reducing CO2 emissions in transportation. However, the sustainability of electric vehicle batteries is affected by battery health degradation, which decreases their overall lifetime. This results in a substantial amount of depleted batteries due to replacements. Users have a major impact on battery health degradation through their actions while handling electric vehicles, such as the use of fast charging. To mitigate this problem, this article presents a methodology to generate user guidance for batteryfriendly actions in the upcoming use. Therefore, we first identify general recommendations from related work and combine them with the vehicle context in order to define context-aware recommendations in the form of if–then rules. These context-aware recommendations are then used to generate user advice. Second, the article covers how to predict the vehicle context in order to determine necessary recommendations. Third, a prescriptive recommendation system architecture is proposed, which takes vehicle context information, and produces user guidance. Finally, we test the proposed architecture using fuzzy logic as decision system. Overall, the architecture provides satisfactory user advice
Leveraging Low Code Development of Smart Personal Assistants: An Integrated Design Approach with the SPADE Method.Elshan, Edona; Ebel, Philipp Alexander; Söllner, Matthias; Leimeister, Jan Marco. In Journal of Management Information Systems (JMIS), 40(1), pp. 96–129. 2023.
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Smart personal assistants (SPAs) promise individualized user interactions owing to their varying interaction possibilities, knowledgeability, and human-like behaviors. To support the widespread adoption and use of SPAs, organizations such as Google or Amazon provide low code environments that support the development of SPAs (e.g., for Google Home or Amazon’s Alexa). These so-called low code platforms enable domain experts (e.g., business users without programming skills or experience) to develop SPAs for their purposes. However, using these platforms alone does not guarantee a useful and good conversation with novel SPAs due to non-intuitive design choices. Following a design science research approach, we propose the Smart Personal Assistant for Domain Experts (SPADE) method to address the missing link. This method supports domain experts in the development and contextualization of sophisticated SPAs for various application scenarios and focuses especially on conversational and anthropomorphic design steps. Our proof of concept and proof of value results show that SPADE is useful for supporting domain experts to create effective SPAs in different domains beyond private set-ups.
Das agile Mindset: Definition, Relevanz und Messbarkeit.Eilers, Karen; Peters, Christoph. In PersonalQUARTELY, 24(4). 2023.
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Stores are Liable for Their Robots!? An Empirical Study on Liability in HRI with an Anthropomorphic Frontline Service Robot.Busch, Philip; Kirchhoff, Jérôme; Heinisch, Judith S.; David, Klaus; von Stryk, Oskar; Wendt, Janine. In 2023 32nd IEEE International Conference on Robot and Human Interactive Communication (RO-MAN). 2023.
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Innovationen für datenbasierte Wertschöpfung. Mit internetbasierten Dienstleistungen die Zukunft der Wirtschaft gestalten. Langes, Barbara; Peters, Christoph; Boes, Andreas; Leimeister, Jan Marco. ISF München, München, 2023.
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Establishing a Comprehensive Quality Management for the Use of Crowd-based Mechanisms by SMEs.Lange, Kirsten; Refflinghaus, Robert; Hupe, Anna; Bretschneider, Ulrich. In International Conference on Production Research (ICPR). Cluj-Napoca, Romania, 2023.
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This paper describes a concept to adapt the design of quality management in SMEs to better exploit the potential of crowdworking. It shows how the quality management, especially of SMEs, can be organised to make efficient and targeted use of work perfomed by crowd-based mechanisms and continue to ensure that customer requirements are met. The different forms of crowd-based mechanisms will be discussed. Barriers of SMEs in adopting crowdsourcing and strategies to overcome them will be identified. A modular reference process model for the quality-oriented use of crowdworking in SMEs will be developed. In addition, concrete recommendations for action to adapt or supplement the design of quality management in SMEs for the efficient and effective use of crowd-based mechanisms will be given.
Domain Imaging in Periodic Submicron Wide Nanostructures by Digital Drift Correction in Kerr Microscopy.Akhundzada, Sapida; Dingel, Kristina; Bischof, David; Janzen, Christian; Sick, Bernhard; Ehresmann, Arno. In Advanced Photonics Research, 4(10), p. 2300170. Wiley, 2023.
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Magneto-optical Kerr microscopy is a powerful method for imaging magnetic domains. Even though domain imaging below the diffractive resolution limit is possible, such investigations are getting increasingly complex with decreasing structure size due to the decreasing Kerr contrast. As magnetic domain images free of topographical artifacts are obtained by subtracting a reference image from the actual image, the corresponding challenges are additionally increased by unavoidable sample motion in the time interval between acquiring the two images. Software-based drift corrections typically rely on a unique structure in the image's region of interest (ROI), recognized automatically or selected manually by the user. By digital image shifting, the ROI positions in the actual and reference images are aligned, and the sample motion is compensated. For magnetic domain imaging in periodically arranged micro- or nano-objects, unique topographical features are not given, making the drift correction by ROIs difficult, often even impossible. Herein, a novel software-based approach is presented for drift corrections to image domains with features close/below the optical resolution limit and for investigating periodically arranged micro- or nano-objects without utilizing ROIs. High-contrast images are obtained, enabling the characterization of periodically arranged 1D, 2D, and 3D magnetic objects with lateral dimensions below 100 nm.
An Investigation of Why Low Code Platforms Provide Answers and New Challenges.Elshan, Edona; Dickhaut, Ernestine; Ebel, Philipp. In Hawaii International Conference on System Sciences (HICSS). Maui, Hawaii, 2023.
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Although the idea of low code development is not new, the market for these oftentimes platform-based development approaches is exponentially growing. Especially factors such as increasing affinity for technology development across all user groups, consumerization of development, and advancing digitalization are opening a new target group for the low code movement. The broad application possibilities of low code, as well as the benefits, are therefore getting more important for businesses. Especially for small and medium-sized enterprises (SMEs), low code constitutes a promising avenue to survive and succeed in the rapidly changing world. However, a clear understanding regarding the application of this paradigm of software development in SMEs is still missing. To provide a coherent understanding of the phenomenon low code in SMEs, we review extant literature and conduct interviews, identifying potential application domains and conceptualizing the benefits and challenges of low code from a holistic perspective.
How to leverage anthropomorphism for chatbot service interfaces: The interplay of communication style and personification.Janson, Andreas. In Computers in Human Behavior, (December). Elsevier, 2023.
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Although chatbots are oftentimes used in customer service encounters, interactions are oftentimes perceived as not satisfactory. One key aspect for designing chatbots is the use of anthropomorphic design elements. In this experimental study, we examine the two anthropomorphic chatbot design elements of personification, which includes a human-like appearance, and social orientation of communication style, which means a more sensitive and extensive communication. We tested the influence of the two design elements on social presence, satisfaction, trust and empathy towards a chatbot. First, the results show a significant influence of both anthropomorphic design elements on social presence. Second, our findings illustrate that social presence influences trusting beliefs, empathy, and satisfaction. Third, social presence acts as a mediator for both anthropomorphic design elements for satisfaction with a chatbot. Our implications provide a better understanding of anthropomorphic chatbot design elements when designing chatbots for short-term interactions, and we offer actionable implications for practice that enable more effective chatbot implementations.
Meetings at Digital Workplaces – An Experimental Approach to Analyze Group Attachment and Organizational Commitment in Digital Worlds.Gleich, Tristan; Schöbel, Sofia; Janson, Andreas. In European Conference on Information Systems (ECIS). Kristiansand, Norway, 2023.
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After facing the COVID-19 pandemic, organizations request their employees to work from home permanently. For an organization, this provides positive benefits such as reducing costs for rent. From an employee perspective, working from home can cause a feeling of isolation towards co-workers and lower attachment to an organization. One way to counteract this problem is to transfer the office to the digital world, especially spurred by the metaverse discussion to represent processes of our real world in digital environments that allow us to do everything in the same way digitally as we are doing in the real world. In this paper, we present a theoretical model for conducting a 2x2 between-subject experiment to analyze how digital real-world meeting experiences influence team attachment and organizational commitment. We contribute to theories such as the need of belonging and transfer them to digital environments and provide practical implications for designing digital offices.
Harnessing Conversational AI in Higher Education: The Education Buddy - An Innovative Intervention for International Students Facing Study Difficulties.Haenel, M.; Söllner, M. In Lecture Notes in Informatics (LNI). INFORMATIK 2023, Berlin. 2023.
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Alternative Daten-Governance – Länderreporte für Deutschland, die USA, Kenia und Indien.Geminn, Christian; Johannes, Paul C.; Müller, Johannes; Nebel, Maxi. In ZD-Aktuell, (5,01102). 2023.
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Kontextadaptive Gestaltungslösungen für das User Interface mobiler Applikationen zur Schonung der Aufmerksamkeitsressource in der mobilen Interaktion. Kniewel, R. In Vol. 4 of Schriftenreihe Mensch-Maschine-Systemtechnik. Kassel University Press, Kassel, 2023.
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Im Alltag werden Smartphones häufig unterwegs eingesetzt, zum Beispiel zur Orientierung oder Informationsbeschaffung. Ihre Verwendung erfordert die Aufmerksamkeit des Nutzers, und oft leidet die Aufmerksamkeit für die Umgebung darunter. Ziel dieser Arbeit war es, Gestaltungslösungen zur Aufmerksamkeitsschonung in der Unterwegsnutzung (mobile Interaktion) zu entwickeln. Für drei typische Komponenten mobiler Applikationen des freizeitbezogenen Anwendungsfeldes wurde je ein Lösungsansatz abgeleitet, der auf einer Anpassung der Komponente an den Kontext (Kontextadaptivität) basiert. Es wurden exemplarische Gestaltungslösungen erarbeitet und in Nutzerstudien auf die Gestaltungsziele Gebrauchstauglichkeit, Aufmerksamkeitsschonung und Nutzerakzeptanz untersucht. Ein Lösungsansatz sieht vor, dem Nutzer die Spracheingabe, statt der Tastatureingabe anzubieten, wenn das Smartphone im Gehen verwendet wird. In einer Studie zeigte sich, dass die Spracheingabe eine effektive und ca. dreifach effizientere Eingabe ermöglicht und das Gehen weniger beeinträchtigt. Trotz geringer Vorerfahrungen wurde die Spracheingabe auch subjektiv nützlicher bewertet. Allerdings scheint die Akzeptanz ihrer Nutzung in öffentlichen Räumen eingeschränkt zu sein. Der zweite Lösungsansatz hat das Ziel, die Verwendung mobiler Karten zu beschleunigen, indem auf den Kartenpins Merkmalsinformationen abgebildet werden, die für den Nutzer aktuell relevant sind. Ein iteratives Vorgehen resultierte in verständlichen Gestaltungslösungen, die ein effektives Auffinden eines gesuchten Kartenpins ermöglichen und die Suchzeit ungefähr halbieren. Als besonders effizient erwiesen sich Gestaltungsvarianten mit farbiger Symbolerweiterung, die zudem am meisten präferiert wurden. Die Ergebnisse deuten auf eine Nutzerakzeptanz für den Lösungsansatz hin. Der dritte Lösungsansatz betrifft Benachrichtigungen, die Informationen zur Reisebegleitung liefern, aber den Nutzer bei einer anderen Aufgabe unterbrechen. Die Benachrichtigungen werden statt auf dem Smartphone auf einer Smartwatch angezeigt, um die Unterbrechung zu verkürzen. In Studien wurde deutlich, dass der Vorteil der Smartwatch in ihrer spezifischen Handhabung liegt, aber das Endgerät selbst keinen Effekt hat. Auch gelang es, eine gebrauchstaugliche benachrichtigungsbasierte Reisebegleitung für Smartwatches zu entwickeln, die von Nutzern akzeptiert wird. Insgesamt konnte in dieser Arbeit gezeigt werden, dass durch die gebrauchstaugliche Gestaltung kontextadaptiver App-Komponenten die Aufmerksamkeit in der mobilen Interaktion geschont werden kann.
Smarter Crowdwork by Applying Smart Contracts? European Conference on Information Systems.Hupe, Anna; Bretschneider, Ulrich. In European Conference on Information Systems (ECIS). Kristiansand, Norway, 2023.
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Crowdworking is characterized by flexibly engaging a workforce that is recruited for only one task. After the task is completed, the crowdworker and the company do not collaborate anymore. To identify the best-suited crowdwoker for a certain task, crowd working platform providers offer different tools to match both parties. Matching a crowdworker with the required skills for a task is an important factor to complete a crowdworking campaign successfully. As of today, the principal agent theorem and high transaction costs decrease the effectiveness of such campaigns due to information asymmetries between crodworkers and crowdsourcers. Based on a qualitative approach, we structurally develop a currently existing crowdworking campaign process. We then theoretically analyze how smart contracts can support and simplify the identified process while reducing the challenges of transaction cost economics and the principal agent theorem.
Managing power grids through topology actions: A comparative study between advanced rule-based and reinforcement learning agents.Lehna, Malte; Viebahn, Jan; Marot, Antoine; Tomforde, Sven; Scholz, Christoph. In Energy and AI, 14, p. 100276. Energy and AI, 2023.
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The operation of electricity grids has become increasingly complex due to the current upheaval and the increase in renewable energy production. As a consequence, active grid management is reaching its limits with conventional approaches. In the context of the Learning to Run a Power Network (L2RPN) challenge, it has been shown that Reinforcement Learning (RL) is an efficient and reliable approach with considerable potential for automatic grid operation. In this article, we analyse the submitted agent from Binbinchen and provide novel strategies to improve the agent, both for the RL and the rule-based approach. The main improvement is a N-1 strategy, where we consider topology actions that keep the grid stable, even if one line is disconnected. More, we also propose a topology reversion to the original grid, which proved to be beneficial. The improvements are tested against reference approaches on the challenge test sets and are able to increase the performance of the rule-based agent by 27%. In direct comparison between rule-based and RL agent we find similar performance. However, the RL agent has a clear computational advantage. We also analyse the behaviour in an exemplary case in more detail to provide additional insights. Here, we observe that through the N-1 strategy, the actions of both the rule-based and the RL agent become more diversified.
Barriers of SMEs in Adopting Crowdsourcing and -working and Strategies to Overcome Them. Hupe, Anna; Bretschneider, Ulrich; Lange, Kirsten; Trostmann, Tim; Stubbemann, Lena; Leimeister, Jan Marco; Refflinghaus, Robert. Vol. 16. Kassel University Press (kup), Kassel, Germany, 2023.
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Despite its undisputable benefits for firms, crowdsourcing and ‐working is currently rarely applied in small and medium sized enterprises (SME). Up to now extant literature provides only an incomplete picture of the barriers that hinder SMEs from adopting crowdsourcing and ‐working. Because of these incomplete insights on this phenomenon there is also a great deal of uncertainty on how to overcome these barriers. In the scope of an interview series with 15 SMEs we explore a range of different barriers. In a second round of interviews with crowdsourcing and ‐working experts (Delphi study) we reveal strategies that may help SMEs to overcome these barriers. The findings from these two studies not only expand the so far incomplete body of knowledge but also provide practical references for SMEs to overcome the barriers and to adopt crowdsourcing and ‐working for their value creation activities.
WHERETO FOR AUTOMATED COACHING CONVERSATION: STRUCTURED INTERVENTION OR ADAPTIVE GENERATION?Göldi, Andreas; Rietsche, Roman. In European Conference on Information Systems (ECIS). Kristiansand, Norway, 2023.
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In an age of lifelong learning, it is important that adult learners can effectively use their motivation and resources to reach their learning goals. In conversation, coaches can intervene to promote learning goal attainment by using behavioural change techniques (BCTs). In a coaching chatbot, such techniques can be ordered in an established, structured way to good effect. With recent technological advances, chatbot responses can be generated adaptively; this means that BCTs can be applied in an adaptive but less structured way. It is yet unclear whether this latter form of configuring coaching interventions is viable, how they compare to more established structured interventions, and whether both methods can be combined. For the purpose of answering this, we propose a 2x2 experimental design with the two intervention types as factors and goal attainment as the dependent variable. Results will indicate avenues for automating skilled conversation including choice of technology.
Learning Analytics nach Satzung, Rechtssicherer Einsatz durch Hochschulen.Johannes, Paul C.; Geminn, C. L.; Nebel, M. In Datenschutz und Datensicherheit, pp. 715–720. 2023.
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Systematic Privacy for large, real life Data Processing Systems. Gutjahr, A.; Hornung, G.; Kriegel, J.; Schaller, T.; Selzer, A.; Spiecker gen. Döhmann, I.; Stummer, S.; Wilmer, T. 2023.
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Interactive collaborative exploration using incomplete contexts.Felde, Maximilian; Stumme, Gerd. In Data & Knowledge Engineering, 143, p. 102104. Elsevier BV, 2023.
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Datenschutzrechtliche Beurteilung von Learning Analytics an Hochschulen in NRW. Geminn, Christian; Johannes, Paul C.; Nebel, Maxi; Bile, Tamer. 2023.
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Greedy Discovery of Ordinal Factors.Dürrschnabel, Dominik; Stumme, Gerd. 2023.
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In large datasets, it is hard to discover and analyze structure. It is thus common to introduce tags or keywords for the items. In applications, such datasets are then filtered based on these tags. Still, even medium-sized datasets with a few tags result in complex and for humans hard-to-navigate systems. In this work, we adopt the method of ordinal factor analysis to address this problem. An ordinal factor arranges a subset of the tags in a linear order based on their underlying structure. A complete ordinal factorization, which consists of such ordinal factors, precisely represents the original dataset. Based on such an ordinal factorization, we provide a way to discover and explain relationships between different items and attributes in the dataset. However, computing even just one ordinal factor of high cardinality is computationally complex. We thus propose the greedy algorithm in this work. This algorithm extracts ordinal factors using already existing fast algorithms developed in formal concept analysis. Then, we leverage to propose a comprehensive way to discover relationships in the dataset. We furthermore introduce a distance measure based on the representation emerging from the ordinal factorization to discover similar items. To evaluate the method, we conduct a case study on different datasets.
Self-Integration and Agent Compatibility.Gruhl, Christian; Sick, Bernhard. In Autonomic Computing and Self-Organizing Systems Companion (ACSOS-C), pp. 71–73. IEEE, 2023.
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This position paper addresses the issue of agent compatibility in the context of self-aware microsystems (SAMs), which are SISSY systems with self-awareness capabilities. SAMs are designed to adapt their behaviour and collaborate with other agents in multi-agent settings. Achieving compatibility and effective collaboration between agents pose significant challenges, such as detecting incompatibility and discerning it from malicious behaviour. We present our concept of agent compatibility, highlight future challenges, and propose directions for future research in this area. By focusing on agent compatibility, we aim to advance the understanding of SAMs and promote successful collaboration among agents.
Das vietnamesische Datenschutzrecht – Neuerungen durch das Dekret Nr. 13/2023/ND-CP.Geminn, Christian; Pham, Thi Thanh Huong. In Zeitschrift für Datenschutz, (8), pp. 440–446. 2023.
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Digitalisierung der Verwaltung – Ein Blick auf Deutschland und Japan.Geminn, Christian; Tatsumi, Tomohiko; Terada, Mayu. In Die Öffentliche Verwaltung, 76(20), pp. 847–859. 2023.
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Reconstruction of incomplete X-ray diffraction pole figures of oligocrystalline materials using deep learning.Meier, David; Ragunathan, Rishan; Degener, Sebastian; Liehr, Alexander; Vollmer, Malte; Niendorf, Thomas; Sick, Bernhard. In Scientific Reports, 13(1), p. 5410. Springer Nature, 2023.
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X‑ray diffraction crystallography allows non‑destructive examination of crystal structures. Furthermore, it has low requirements regarding surface preparation, especially compared to electron backscatter diffraction. However, up to now, X‑ray diffraction has been highly time‑ consuming in standard laboratory conditions since intensities on multiple lattice planes have to be recorded by rotating and tilting. Furthermore, examining oligocrystalline materials is challenging due to the limited number of diffraction spots. Moreover, commonly used evaluation methods for crystallographic orientation analysis need multiple lattice planes for a reliable pole figure reconstruction. In this article, we propose a deep‑learning‑based method for oligocrystalline specimens, i.e., specimens with up to three grains of arbitrary crystal orientations. Our approach allows faster experimentation due to accurate reconstructions of pole figure regions, which we did not probe experimentally. In contrast to other methods, the pole figure is reconstructed based on only a single incomplete pole figure. To speed up the development of our proposed method and for usage in other machine learning algorithms, we introduce a GPU‑based simulation for data generation. Furthermore, we present a pole widths standardization technique using a custom deep learning architecture that makes algorithms more robust against influences from the experiment setup and material.
Drawing Order Diagrams Through Two-Dimension Extension.Dürrschnabel, Dominik; Hanika, Tom; Stumme, Gerd. In Journal of Graph Algorithms and Applications, 27(9), pp. 783–802. Journal of Graph Algorithms and Applications, 2023.
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Self-awareness in Cyber-Physical Systems: Recent Developments and Open Challenges.Esterle, Lukas; Dutt, Nikil; Gruhl, Christian; Lewis, Peter R.; Marcenaro, Lucio; Regazzoni, Carlo; Jantsch, Axel. In Design, Automation & Test in Europe Conference & Exhibition (DATE), pp. 1–6. IEEE, 2023.
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Self-aware computing systems enable computing systems to reflect on their actions and behavior. This becomes even more relevant in Cyber-Physical Systems where computing systems have to control and interact with elements in the real world. This paper reports on recent advances made in computational self-awareness for cyber-physical systems.
Power blackout: Citizens’ contribution to strengthen urban resilience.Knodt, M.; Stöckl, A.; Steinke, F.; Pietsch, M.; Hornung, G.; Stroscher, J.-P. In Energy Policy, 2023(174), p. 113433. 2023.
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Maximal Ordinal Two-Factorizations.Dürrschnabel, Dominik; Stumme, Gerd. In Graph-Based Representation and Reasoning, M. Ojeda-Aciego, K. Sauerwald, R. Jäschke (eds.), pp. 41–55. Springer Nature Switzerland, Cham, 2023.
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Given a formal context, an ordinal factor is a subset of its incidence relation that forms a chain in the concept lattice, i.e., a part of the dataset that corresponds to a linear order. To visualize the data in a formal context, Ganter and Glodeanu proposed a biplot based on two ordinal factors. For the biplot to be useful, it is important that these factors comprise as much data points as possible, i.e., that they cover a large part of the incidence relation. In this work, we investigate such ordinal two-factorizations. First, we investigate for formal contexts that omit ordinal two-factorizations the disjointness of the two factors. Then, we show that deciding on the existence of two-factorizations of a given size is an {\$$}{\$$}{\backslash}textsf{\{}NP{\}}{\$$}{\$$}NP-complete problem which makes computing maximal factorizations computationally expensive. Finally, we provide the algorithm Ord2Factor that allows us to compute large ordinal two-factorizations.
Auslage von Betriebsvereinbarungen mit vertraulichen Daten im Betrieb.Breyer, J.; Schild, H.-H. In Der Betrieb, 2023, pp. 2501–2503. 2023.
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Towards Enhancing Deep Active Learning with Weak Supervision and Constrained Clustering.Aßenmacher, Matthias; Rauch, Lukas; Goschenhofer, Jann; Stephan, Andreas; Bischl, Bernd; Roth, Benjamin; Sick, Bernhard. In Workshop on Interactive Adapative Learning (IAL), ECML PKDD, pp. 65–73. 2023.
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Three fields revolving around the question of how to cope with limited amounts of labeled data are Deep Active Learning (DAL), deep Constrained Clustering (CC), and Weakly Supervised Learning (WSL). DAL tackles the problem by adaptively posing the question of which data samples to annotate next in order to achieve the best incremental learning improvement, although it suffers from several limitations that hinder its deployment in practical settings. We point out how CC algorithms and WSL could be employed to overcome these limitations and increase the practical applicability of DAL research. Specifically, we discuss the opportunities to use the class discovery capabilities of CC and the possibility of further reducing human annotation efforts by utilizing WSL. We argue that the practical applicability of DAL algorithms will benefit from employing CC and WSL methods for the learning and labeling process. We inspect the overlaps between the three research areas and identify relevant and exciting research questions at the intersection of these areas.
Implementing Digital Responsibility through Information Systems Research – A Delphi Study of Objectives, Activities, and Challenges in IS Research.Beverungen, Daniel; zur Heiden, Philipp; Lehrer, Christiane; Trier, Matthias; Bartelheimer, C. Paderborn, Germany, 2023.
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Measuring university students’ ability to recognize argument structures and fallacies.Berkle, Yvonne; Schmitt, Lukas; Tolzin, Antonia; Janson, Andreas; Wambsganss, Thiemo; Leimeister, Jan Marco; Leuchter, Miriam. In Frontiers in Psychology (Front. Psychol.), 14(1270931), pp. 1–17. 2023.
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Theory: Argumentation is crucial for all academic disciplines. Nevertheless, a lack of argumentation skills among students is evident. Two core aspects of argumentation are the recognition of argument structures (e.g., backing up claims with premises, according to the Toulmin model) and the recognition of fallacies. As both aspects may be related to content knowledge, students studying different subjects might exhibit different argumentation skills depending on whether the content is drawn from their own or from a foreign subject. Therefore, we developed an instrument to measure the recognition of both argument structures and fallacies among the groups of preservice teachers and business economics students in both their respective domains (pedagogy and economics), and a neutral domain (sustainability). For the recognition of fallacies, we distinguished between congruent and incongruent fallacies. In congruent fallacies, the two aspects of argument quality, i.e., deductive validity and inductive strength, provide converging evidence against high argument quality. In incongruent fallacies, these two aspects diverge. Based on dual process theories, we expected to observe differences in the recognition of congruent and incongruent fallacies. Aims: We investigated whether these two abilities are domain-specific and whether the recognition of fallacies depends on the congruence of two aspects of argument quality. Methods: 267 preservice teachers and 56 business economics students participated in the study. For the recognition of argument structures, participants assigned the five statements constituting one argument to the corresponding component according to the Toulmin model. For the recognition of fallacies, we created arguments and incorporated a common fallacy into some of them: formal fallacy, overgeneralization, irrelevance, or circularity. Participants rated whether the argument was cogent or not, which was followed by a brief justification. Results: Domain specificity could not be found for either of both abilities. For the recognition of fallacies, two dimensions were found: a congruent dimension (formal fallacies and overgeneralizations) and an incongruent dimension (irrelevance and circularity). Discussion: The instrument measures the recognition of both argument structures and fallacies in these two groups across domains. The recognition of fallacies differs depending on whether the deductive validity and the inductive strength of the argument are equally indicative of argument quality or not.
Das Verhältnis von Art. 6 Abs. 2 und 3 DSGVO.Helmke, J. T.; Link, H. In Datenschutz und Datensicherheit, 2023, pp. 708–714. 2023.
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Verpflichtung zur intelligenten Angriffserkennung?Kohpeiß, M. In Datenschutz und Datensicherheit, 2023, pp. 220–224. 2023.
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Weiterleitung von Daten der Jugendhilfe eines unbegleiteten minderjährigen Flüchtlings im Rahmen des Asylverfahrens, Anmerkung zu VG München, Urt. v. 22.9.2022 – M 10 K 21.30727.Lorenz, L. In Neue Zeitschrift für Familienrecht, 2023, p. 335. 2023.
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A Value Co-Creation Perspective on Data Labeling in Hybrid Intelligence Systems: A Design Study.Li, Mahei Manhai; Reinhard, Philipp; Oeste-Reiss, Sarah; Peters, Christoph; Leimeister, Jan Marco. In Information Systems (IS), p. 102311. 2023.
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The adoption of innovative technologies confronts IT-Service-Management (ITSM) with an increasing volume and variety of requests. Artificial intelligence (AI) possesses the potential to augment customer service employees. However, the training data for AI systems are annotated by domain experts with little interest in labeling correctly due to their limited perceived value. Ultimately, insufficient labeled data leads to diminishing returns in AI performance. Following a design science research approach, we provide a novel human-in-the-loop (HIL) design for ITSM support ticket recommendations by incorporating a value co-creation perspective. The design incentivizes ITSM agents to provide labels during their everyday ticket-handling procedures. We develop a functional prototype based on 17,120 support tickets provided by a pilot partner as an instantiation and evaluate the design through accuracy metrics and user evaluations. Our evaluation revealed that recommendations after label improvement showed increased user ratings, and users are willing to contribute their domain knowledge. The improved labels can be utilized to continuously enhance the AI system as rewards showed increasing growth with decreasing marginal returns. Overall, our results emphasize agents' need for value-in-use by providing better results if they improve the labeling of support tickets pre-labeled by AI. Thus, we provide prescriptive knowledge of a novel HIL design that enables efficient and interactive labeling in the context of diverse applications of reinforcement learning systems.
Scaling Dimension.Ganter, Bernhard; Hanika, Tom; Hirth, Johannes. In Formal Concept Analysis - 17th International Conference, ICFCA 2023, Kassel, Germany, July 17-21, 2023, Proceedings, Vol. 13934 of Lecture Notes in Computer Science, D. Dürrschnabel, D. López-Rodríguez (eds.), pp. 64–77. Springer, 2023.
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It is the habit not the handle that affects tooth brushing. Results of a randomised counterbalanced cross over study.Deinzer, Renate; Eidenhardt, Zdenka; Sohrabi, Keywan; Stenger, Manuel; Kraft, Dominik; Sick, Bernhard; Götz-Hahn, Franz; Bottenbruch, Carlotta; Berneburg, Nils; Weik, Ulrike. In Research Square. 2023.
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Objective: To assess the effect of the toothbrush handle on video-observed toothbrushing behaviour and toothbrushing effectiveness Methods: This is a randomized counterbalanced cross-over study. N = 50 university students brushed their teeth at two occasions, one week apart, using either a commercial ergonomically designed manual toothbrush (MT) or Brushalyze V1 (BV1), a manual toothbrush with a thick cylindrical handle without any specific ergonomic features. Brushing behaviour was video-analysed. Plaque was assessed at the second occasion immediately after brushing. Participants directly compared the two brushes regarding their handling and compared them to the brushed they used at home. Results: The study participants found the BV1 significantly more cumbersome than the M1 or their brush at home. (p < 0.05). However, correlation analyses revealed a strong consistency of brushing behavior with the two brushes (0.71 < r < 0.91). Means differed only slightly (all d < 0.36). These differences became statistically significant only for the brushing time at inner surfaces (d = 0.31 p = 0.03) and horizontal movements at inner surfaces (d = 0.35, p = 0.02). Plaque levels at the gingival margins did not differ while slightly more plaque persisted at the more coronal aspects of the crown after brushing with BV1 (d = 0.592; p 0.042) Discussion: The results of the study indicate that the brushing handle does not play a major role in brushing behavior or brushing effectiveness.
Zertifizierungskriterien für Verarbeitungstätigkeiten. Luxemburg prescht vor – Eine Analyse.Helmke, J. T.; Link, H.; Schild, H.-H. In Datenschutz und Datensicherheit, 2023, pp. 100–107. 2023.
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Stay with me - Conversational Churn Prevention in Digital Subscription Service.Benner, Dennis; Schöbel, Sofia. In European Conference on Information Systems (ECIS). Kristiansand, Norway, 2023.
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Lots of organizations use subscription business models. However, with increasing competition and technological progress switching costs for customers are decreasing. This development can translate to serious issues for subscription-based businesses, requiring action. Traditionally, businesses used mailings or calls, which are costly, time-consuming and often not effective. In this research-in-progress paper, we explore conversational churn prevention as a potential remedy. We present a conversational agent with persuasive design features (e.g., nudges) and first results from a pre-study. We conduct an in-between subject experiment and interviews for our mixed-methods evaluation of our pre-study. Our work contributes to theory, by presenting more insights into the interaction quality of conversational agents in the context of churn prevention of digital services and the role of persuasive design. We support practitioners, by guiding them towards more effective use of conversational agents to improve their services and to predict churn.
Investigating Emotions, Social Roles, Well-being and Mobile Usage Behaviors During COVID-19 Home Confinement.Gao, Nan; Nolan, Sam; Ji, Kaixin; Khan Rumi, Shakila; Heinisch, Judith Simone; Anderson, Christoph; David, Klaus; Salim, Flora D. In arXiv preprint arXiv:2310.13304. 2023.
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Power flow forecasts at transmission grid nodes using Graph Neural Networks.Beinert, Dominik; Holzhüter, Clara; Thomas, Josephine; Vogt, Stephan. In Energy and AI, 14(1), p. 100262. Elsevier, 2023.
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The increasing share of renewable energy in the electricity grid and progressing changes in power consumption have led to fluctuating, and weather-dependent power flows. To ensure grid stability, grid operators rely on power forecasts which are crucial for grid calculations and planning. In this paper, a Multi-Task Learning approach is combined with a Graph Neural Network (GNN) to predict vertical power flows at transformers connecting high and extra-high voltage levels. The proposed method accounts for local differences in power flow characteristics by using an Embedding Multi-Task Learning approach. The use of a Bayesian embedding to capture the latent node characteristics allows to share the weights across all transformers in the subsequent node-invariant GNN while still allowing the individual behavioral patterns of the transformers to be distinguished. At the same time, dependencies between transformers are considered by the GNN architecture which can learn relationships between different transformers and thus take into account that power flows in an electricity network are not independent from each other. The effectiveness of the proposed method is demonstrated through evaluation on two real-world data sets provided by two of four German Transmission System Operators, comprising large portions of the operated German transmission grid. The results show that the proposed Multi-Task Graph Neural Network is a suitable representation learner for electricity networks with a clear advantage provided by the preceding embedding layer. It is able to capture interconnections between correlated transformers and indeed improves the performance in power flow prediction compared to standard Neural Networks. A sign test shows that the proposed model reduces the test RMSE on both data sets compared to the benchmark models significantly.
Neue „Digitale DNA“ der EU oder nur ein (weiterer) Schritt politischen Symbolcharakters? – Teil II.Lorenz, L. In E-Zeitschrift für Wirtschaftsrecht und Digitalisierung (LRZ), 2023(Rn.), p. 289 ff. 2023.
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Handlungsbroschüre. Privacy by Design am Beispiel der kollaborativen kontextsensitiven NORA-App zur Kommunikationsunterstützung von Wissensarbeit. Handlungsempfehlungen zur Gestaltung von kollaborativen kontextsensitiven mobilen Anwendungen und Algorithmen nach normativen Anforderungen des Datenschutzrechts und der Informatik. Technical Report (Band 15), . Löber, LI; König, I; Lange, S; David, K; Roßnagel, A. ITeG Technical Reports, kassel university press, 2023.
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Datenschutzkonforme Digitalisierung in Schulen. Die Zertifizierung schulischer Informationssysteme als Chance für den Beschäftigtendatenschutz.Hornung, G. In Zeitschrift für Datenschutzrecht, 2023, pp. 311–316. 2023.
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“Dear Manager, now I know what you expect”: Examining availability ambiguity in two studies.Heissler, C.; Ohly, S.; Kern, M. In German Journal of Human Resource Management, (23970022231196440). 2023.
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Hochschuldidaktik Informatik HDI 2021. Desel, Jörg; Opel, Simone; Siegeris, Juliane; Draude, Claude; Weber, Gerhard; Schell, Timon; Schwill, Andreas; Thorbrügge, Carsten; Schäfer, Len Ole; Netzer, Cajus Marian; Gerstenberger, Dietrich; Winkelnkemper, Felix; Schulte, Carsten; Böttcher, Axel; Thurner, Veronika; Häfner, Tanja; Ottinger, Sarah; Große-Bölting, Gregor; Scheppach, Lukas; Mühling, Andreas; Baberowski, David; Leonhardt, Thiemo; Rentsch, Susanne; Bergner, Nadine; Bonorden, Leif; Stemme, Jonas; Hoppe, Uwe; Weicker, Karsten; Bender, Esther; Barbas, Helena; Hamann, Fabian; Soll, Marcus; Sitzmann, Daniel. In of Commentarii informaticae didacticae (CID). Universitätsverlag Potsdam, 2023.
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Die Fachtagungen HDI (Hochschuldidaktik Informatik) beschäftigen sich mit den unterschiedlichen Aspekten informatischer Bildung im Hochschulbereich. Neben den allgemeinen Themen wie verschiedenen Lehr- und Lernformen, dem Einsatz von Informatiksystemen in der Hochschullehre oder Fragen der Gewinnung von geeigneten Studierenden, deren Kompetenzerwerb oder auch der Betreuung der Studierenden widmet sich die HDI immer auch einem Schwerpunktthema. Im Jahr 2021 war dies die Berücksichtigung von Diversität in der Lehre. Diskutiert wurden beispielsweise die Einbeziehung von besonderen fachlichen und überfachlichen Kompetenzen Studierender, der Unterstützung von Durchlässigkeit aus nichtakademischen Berufen, aber auch die Gestaltung inklusiver Lehr- und Lernszenarios, Aspekte des Lebenslangen Lernens oder sich an die Diversität von Studierenden adaptierte oder adaptierende Lehrsysteme. Dieser Band enthält ausgewählte Beiträge der 9. Fachtagung 2021, die in besonderer Weise die Konferenz und die dort diskutierten Themen repräsentieren.
Selbstständige Evangelisch-Lutherischen Kirche (SELK) unterfällt DS-GVO, Anmerkung zu VG Hannover, Urteil v. 30.11.2022 – 10 A 1195/21.Lorenz, L. In Neue Zeitschrift für Verwaltungsrecht, 2023, pp. 1027–1032. 2023.
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New Materialisms Across the Natural Sciences and Humanities: Trajectories, Inspirations, and Stirrings.Hinton, Peta; Lorenz-Meyer, Dagmar; Barla, Josef; Braun, Veit; Draude, Claude; Ernst, Waltraud; Liu, Xin; Mauthner, Natasha; Schmitz, Sigrid; Šmejkalová, Jiřina; Szczygielska, Marianna. In Methods and Genealogies of New Materialisms, F. Colman, I. van der Tuin (eds.), pp. 212–238. Edinburg University Press, 2023.
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Curated Panel: ‘New Materialisms Across the Natural Sciences and Humanities: Trajectories, Inspirations, and Stirrings’.Hinton, Peta; Lorenz-Meyer, Dagmar; Barla, Josef; Braun, Veit; Draude, Claude; Ernst, Waltraud; Liu, Xin; Mauthner, Natasha; Schmitz, Sigrid; Šmejkalová, Jiřina; Szczygielska, Marianna. In Methods and Genealogies of New Materialisms, F. Colman, I. van der Tuin (eds.), pp. 212–238. Edinburg University Press, 2023.
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Ordinal Motifs in Lattices.Hirth, Johannes; Horn, Viktoria; Stumme, Gerd; Hanika, Tom. 2023.
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Lattices are a commonly used structure for the representation and analysis of relational and ontological knowledge. In particular, the analysis of these requires a decomposition of a large and high-dimensional lattice into a set of understandably large parts. With the present work we propose /ordinal motifs/ as analytical units of meaning. We study these ordinal substructures (or standard scales) through (full) scale-measures of formal contexts from the field of formal concept analysis. We show that the underlying decision problems are NP-complete and provide results on how one can incrementally identify ordinal motifs to save computational effort. Accompanying our theoretical results, we demonstrate how ordinal motifs can be leveraged to retrieve basic meaning from a medium sized ordinal data set.
Who knows best? A Case Study on Intelligent Crowdworker Selection via Deep Learning.Herde, Marek; Huseljic, Denis; Sick, Bernhard; Bretschneider, Ulrich; Oeste-Reiß, Sarah. In Workshop on Interactive Adapative Learning (IAL), ECML PKDD, pp. 14–18. 2023.
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Crowdworking is a popular approach for annotating large amounts of data to train deep neural networks. However, parts of the annotations are often erroneous. In a case study, we demonstrate how an intelligent crowdworker selection via deep learning reduces the number of erroneous annotations and, thus, the annotation costs of obtaining reliable data for training deep neural networks.
Neue „Digitale DNA“ der EU oder nur ein (weiterer) Schritt politischen Symbolcharakters? – Teil III.Lorenz, L. In E-Zeitschrift für Wirtschaftsrecht und Digitalisierung (LRZ), 2023(Rn.), p. 306 ff. 2023.
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Measuring students’ argumentation skills: validation of a test instrument.Berkle, Yvonne; Janson, Andreas; Wambsganß, Thiemo; Löfflad, Denise; Leimeister, Jan Marco; Leuchter, Miriam. In EARLI Conference (EARLI). Thessaloniki, Greece, 2023.
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The importance of argumentation skills for academic disciplines is well evident. Two core aspects of argumentation skills are a) the recognition of argumentation fallacies and b) the recognition of the structure of arguments. These two argumentation skills might be related to domain-specific knowledge. In our study, we aim to evaluate an instrument to assess the recognition of argumentation fallacies and the structure of arguments in the context of different domains. Thus, we implemented a self-developed instrument to measure both argumentation skills in different student groups (business economic students and pre-service teachers) in different domains: a) the study-domain of their own courses, b) the study-domain of the respective other courses and c) a neutral domain (sustainability). We assumed these three domains to represent different dimensions within the ability to recognize argumentation fallacies and within the ability to recognize argument structures. This assumption could not be confirmed, what leads to the assumption that our instrument captures cross-domain argumentation skills. However, our research implies a difference in the recognition of formal compared to informal argumentation fallacies. Furthermore, the results indicate that the instrument measures argumentative skills in both groups of students equally well.
Deus ex machina? – Grundrechte und Digitalisierung. Jus Publicum – Beiträge zum Öffentlichen Recht. Geminn, C. Mohr Siebeck, Tübingen, 2023.
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Koordinierungsrechtliche Betrachtung der Indexierung mitgliedstaatlicher Familienleistungen, speziell des deutschen Kindergeldes.Lorenz, L. In Neue Zeitschrift für Familienrecht, 2023, pp. 97–109. 2023.
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Privacy by Design am Beispiel der kollaborativen kontextsensitiven NORA-App zur Kommunikationsunterstützung von Wissensarbeit. Technical Report (Band 15), . Löber, L. I.; König, I.; Lange, S.; David, K.; Roßnagel, A. ITeG Technical Reports, kassel university press, 2023.
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Art. 42, 43 DSGVO und § 39 BDSG.Hornung, G. In Auernhammer. Datenschutz-Grundverordnung, Bundesdatenschutzgesetz und Nebengesetze, Kommentar, 8. Auflage, M. Eßer, P. Kramer, K. v. Lewinski (eds.). Carl Heymanns Verlag, Köln, 2023.
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Neue „Digitale DNA“ der EU oder nur ein (weiterer) Schritt politischen Symbolcharakters? – Teil I.Lorenz, L. In E-Zeitschrift für Wirtschaftsrecht und Digitalisierung (LRZ), 2023(Rn.), p. 273 ff. 2023.
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Policy design in data economy: In need for a public online news (eco)system?Horn, Viktoria; Draude, Claude. 2023.
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Socio-technical design embeds social investigations and inquiries into (Information) Technology Design processes. In this position paper, we propose, by using the aforementioned approach the design of technology and policies can simultaneously inform each other. Additionally we present data economy and particularly anchored online journalism platforms as use cases of policy need and design potentials.
Die Berliner „Kirchensteuer-Rasterfahndung“ auf dem (gerichtlichen) Prüfstand.Lorenz, L. In Die Öffentliche Verwaltung, 2023, pp. 55–66. 2023.
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Multi-annotator Deep Learning: A Probabilistic Framework for Classification.Herde, Marek; Huseljic, Denis; Sick, Bernhard. In Transactions on Machine Learning Research. 2023.
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Solving complex classification tasks using deep neural networks typically requires large amounts of annotated data. However, corresponding class labels are noisy when provided by error-prone annotators, e.g., crowdworkers. Training standard deep neural networks leads to subpar performances in such multi-annotator supervised learning settings. We address this issue by presenting a probabilistic training framework named multi-annotator deep learning (MaDL). A downstream ground truth and an annotator performance model are jointly trained in an end-to-end learning approach. The ground truth model learns to predict instances' true class labels, while the annotator performance model infers probabilistic estimates of annotators' performances. A modular network architecture enables us to make varying assumptions regarding annotators' performances, e.g., an optional class or instance dependency. Further, we learn annotator embeddings to estimate annotators' densities within a latent space as proxies of their potentially correlated annotations. Together with a weighted loss function, we improve the learning from correlated annotation patterns. In a comprehensive evaluation, we examine three research questions about multi-annotator supervised learning. Our findings show MaDL's state-of-the-art performance and robustness against many correlated, spamming annotators.
Who knows best? A Case Study on Intelligent Crowdworker Selection via Deep Learning.Herde, Marek; Huseljic, Denis; Sick, Bernhad; Bretschneider, Ulrich; Oeste-Reiss, Sarah. In International Workshop & Tutorial on Interactive Adaptive Learning (IAL). Torino, Italy, 2023.
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Crowdworking is a popular approach for annotating large amounts of data to train deep neural networks. However, parts of the annotations are often erroneous. In a case study, we demonstrate how an intelligent crowdworker selection via deep learning reduces the number of erroneous annotations and, thus, the annotation costs of obtaining reliable data for training deep neural networks.
Die „ePA für alle“ zwischen Gesundheits- und Datenschutz (Teil 2) – Das für die elektronische Patientenakte angekündigte opt-out-Modell auf dem verfassungs- und EU-datenschutzrechtlichen Prüfstand.Lorenz, L. In Zeitschrift für Gesundheit und Pflege, 2023, pp. 165–183. 2023.
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The IMPTC Dataset: An Infrastructural Multi-Person Trajectory and Context Dataset.Hetzel, Manuel; Reichert, Hannes; Reitberger, Günther; Doll, Konrad; Sick, Bernhard; Fuchs, Erich. In IEEE Intelligent Vehicles Symposium (IV), pp. 1–7. IEEE, 2023.
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Inner-city intersections are among the most critical traffic areas for injury and fatal accidents. Automated vehicles struggle with the complex and hectic everyday life within those areas. Sensor-equipped smart infrastructures, which can cooperate with vehicles, can benefit automated traffic by extending the perception capabilities of drivers and vehicle perception systems. Additionally, they offer the opportunity to gather reproducible and precise data of a holistic scene understanding, including context information as a basis for training algorithms for various applications in automated traffic. Therefore, we introduce the Infrastructural Multi-Person Trajectory and Context Dataset (IMPTC). We use an intelligent public inner-city intersection in Germany with visual sensor technology. A multi-view camera and LiDAR system perceives traffic situations and road users’ behavior. Additional sensors monitor contextual information like weather, lighting, and traffic light signal status. The data acquisition system focuses on Vulnerable Road Users (VRUs) and multiagent interaction. The resulting dataset consists of eight hours of measurement data. It contains over 2,500 VRU trajectories, including pedestrians, cyclists, e-scooter riders, strollers, and wheelchair users, and over 20,000 vehicle trajectories at different day times, weather conditions, and seasons. In addition, to enable the entire stack of research capabilities, the dataset includes all data, starting from the sensor-, calibration- and detection data until trajectory and context data. The dataset is continuously expanded and is available online for non-commercial research at https://github.com/kav-institute/imptc-dataset
Die „ePA für alle“ zwischen Gesundheits- und Datenschutz (Teil 1) – Das für die elektronische Patientenakte angekündigte opt-out-Modell auf dem verfassungs- und EU-datenschutzrechtlichen Prüfstand.Lorenz, L. In Zeitschrift für Gesundheit und Pflege, 2023, pp. 132–154. 2023.
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The Ladder of Participation as a Conceptual Tool for Sustainable Socio-Technical Design of Data-driven Digital Services.Horn, Viktoria; Draude, Claude. In HCI International 2023 Posters, C. Stephanidis, M. Antona, S. Ntoa, G. Salvendy (eds.), pp. 60–67. Springer Nature Switzerland, Cham, 2023.
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Participation in the data economy is prone to unjust power imbalances. Individuals function as mere data sources and are left out of decisions on how, when, and where personal data is accumulated and processed. In this paper, we translate Arnsteins' `Ladder of Citizen Participation' to the field of the data economy to offer a conceptual lens to tackle power imbalances' underlying structures. For this, we derived assumptions from the application's ecosystem. We propose to encase the lowest rungs of the ladder with the term of involuntary participation and frame individuals as digital Citizens to avoid a mere focus on the economic dimension of participation. Building on this, we translate the eight rungs of Arnstein's original ladder to the new application field of the data economy through examples and design affordances corresponding with differing degrees of digital citizens' data agency. Eventually, we contemplate implications for socio-technical design resulting from the re-conceptualization of the `ladder' and formulate future research.
Datenübermittlung an GKV-Spitzenverband im Datentransparenzverfahren, Anmerkung zu SG Frankfurt am Main, Beschluss v. 01.06.2022 – S 25 KR 932/22 DS ER.Lorenz, L.; Schild, H.-H. In Zeitschrift für Datenschutz, 2023, pp. 167–171. 2023.
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Targeted Adversarial Attacks on Wind Power Forecasts.Heinrich, René; Scholz, Christoph; Vogt, Stephan; Lehna, Malte. In Machine Learning, 113(2), pp. 863–889. Springer, 2023.
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In recent years, researchers proposed a variety of deep learning models for wind power forecasting. These models predict the wind power generation of wind farms or entire regions more accurately than traditional machine learning algorithms or physical models. However, latest research has shown that deep learning models can often be manipulated by adversarial attacks. Since wind power forecasts are essential for the stability of modern power systems, it is important to protect them from this threat. In this work, we investigate the vulnerability of two different forecasting models to targeted, semi-targeted, and untargeted adversarial attacks. We consider a Long Short-Term Memory (LSTM) network for predicting the power generation of individual wind farms and a Convolutional Neural Network (CNN) for forecasting the wind power generation throughout Germany. Moreover, we propose the Total Adversarial Robustness Score (TARS), an evaluation metric for quantifying the robustness of regression models to targeted and semi-targeted adversarial attacks. It assesses the impact of attacks on the model's performance, as well as the extent to which the attacker's goal was achieved, by assigning a score between 0 (very vulnerable) and 1 (very robust). In our experiments, the LSTM forecasting model was fairly robust and achieved a TARS value of over 0.78 for all adversarial attacks investigated. The CNN forecasting model only achieved TARS values below 0.10 when trained ordinarily, and was thus very vulnerable. Yet, its robustness could be significantly improved by adversarial training, which always resulted in a TARS above 0.46.
Towards the design of hybrid intelligence frontline service technologies – A novel human-in-the-loop configuration for human machine interactions.Li, Mahei Manhai; Löfflad, Denise; Reh, Cornelius; Oeste-Reiß, Sarah. In Hawaii International Conference on System Sciences (HICSS). Maui, Hawaii, 2023.
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Evaluation der digitalen Selbstbestimmung in benutzungsorientierten Gestaltungsprozessen.Hornung, G.; Schmidt, L. Kassel, 2023.
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Harnessing Conversational AI in Higher Education: The Education Buddy - An Innovative Intervention for International Students Facing Study Difficulties.Hänel, Martin; Söllner, Matthias. In GI-Jahrestagung, Vol. P-337 of LNI, pp. 385–388. Gesellschaft für Informatik, Bonn, 2023.
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As Germany anticipates a demographic shift necessitating reliance on foreign professionals, the integration of international students becomes critical. Despite being a preferred non-English speaking study destination, the country's academic environment – encompassing course materials, lectures, and organizational aspects – is predominantly German. This poses a significant language barrier for the 440,000 foreign students currently studying in Germany, potentially impeding their academic success and future professional integration. To mitigate this, we introduce the Education Buddy, a Conversational Agent (CA) designed to assist international students in navigating their studies. The Education Buddy emerges as a potentially effective tool for facilitating the successful participation of international students within the German academic system.
Automatic Textual Explanations of Concept Lattices.Hirth, Johannes; Horn, Viktoria; Stumme, Gerd; Hanika, Tom. In Graph-Based Representation and Reasoning, of Lecture Notes in Computer Science, M. Ojeda-Aciego, K. Sauerwald, R. Jäschke (eds.), pp. 138–152. Springer Nature Switzerland, Cham, 2023.
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Lattices and their order diagrams are an essential tool for communicating knowledge and insights about data. This is in particular true when applying Formal Concept Analysis. Such representations, however, are difficult to comprehend by untrained users and in general in cases where lattices are large. We tackle this problem by automatically generating textual explanations for lattices using standard scales. Our method is based on the general notion of ordinal motifs in lattices for the special case of standard scales. We show the computational complexity of identifying a small number of standard scales that cover most of the lattice structure. For these, we provide textual explanation templates, which can be applied to any occurrence of a scale in any data domain. These templates are derived using principles from human-computer interaction and allow for a comprehensive textual explanation of lattices. We demonstrate our approach on the spices planner data set, which is a medium sized formal context comprised of fifty-six meals (objects) and thirty-seven spices (attributes). The resulting 531 formal concepts can be covered by means of about 100 standard scales.
Introduction (mit Simitis, S. / Spiecker gen. Döhmann, I.), Art. 1, Art. 94 und Art. 99 (mit Spiecker gen. Döhmann, I.) sowie Art. 3, Art. 4 Nr. 17 und Art. 27.Hornung, G. In General Data Protection Regulation: Article-by-Article Commentary, I. Spiecker gen. Döhmann, V. Papakonstantinou, G. Hornung, P. De Hert (eds.). Nomos Verlagsgesellschaft (in Kooperation mit C.H.Beck und Hart Publishing), Baden-Baden, 2023.
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Continuous Feature Networks: A Novel Method to Process Irregularly and Inconsistently Sampled Data With Position-Dependent Features.Magnussen, Birk Martin; Stern, Claudius; Sick, Bernhard. In International Journal On Advances in Intelligent Systems, 16(3&4), pp. 43–50. ThinkMind, 2023.
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Continuous Kernels have been a recent development in convolutional neural networks. Such kernels are used to process data sampled at different resolutions as well as irregularly and inconsistently sampled data. Convolutional neural networks have the property of translational invariance (e.g., features are detected regardless of their position in the measurement domain), which is unsuitable if the position of detected features is relevant for the prediction task. However, the capabilities of continuous kernels to process irregularly sampled data are still desired. This article introduces the continuous feature network, a novel method utilizing continuous kernels, for detecting global features at absolute positions in the data domain. Through a use case in processing multiple spatially resolved reflection spectroscopy data, which is sampled irregularly and inconsistently, we show that the proposed method is capable of processing such data directly without additional preprocessing or augmentation as is needed using comparable methods. In addition, we show that the proposed method is able to achieve a higher prediction accuracy than a comparable network on a dataset with position-dependent features. Furthermore, a higher robustness to missing data compared to a benchmark network using data interpolation is observed, which allows the network to adapt to sensors with a failure of individual light emitters or detectors without the need for retraining. The article shows how these capabilities stem from the continuous kernels used and how the number of available kernels to be trained affects the model. Finally, the article proposes a method to utilize the introduced method as a base for an interpretable model usable for explainable AI.
Systeme zur Angriffserkennung nach § 8a Abs. 1a BSIG.Kohpeiß, M.; Schaller, T. In Computer und Recht, 2023, pp. 589–595. 2023.
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Vergleichende Evaluation von Explorationsarten in interaktiven 3D-360°-Anwendungen: Einsatz von explorativem Lernen zur Vorbereitung von Handwerkern auf Vor-Ort-Termine beim Kunden.Funk, J.; Schmidt, L. In Medienpädagogik : Zeitschrift für Theorie und Praxis der Medienbildung, (51), pp. 297–321. 2023.
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Die vorliegende Studie vergleicht drei Arten des explorativen Lernens mit interaktiven 3D-360°-Anwendungen. Als Szenarien für die Anwendung werden simulierte Vor-Ort-Ter-mine von Handwerkern beim Kunden verwendet. In den Handwerksszenarien «Maler», «Elektriker» und «Klempner» sollen handwerksübliche Arbeitsaufgaben zur Vorbereitung auf reale Vor-Ort-Termine mit verschiedenen Explorationsarten durchgeführt werden. In Art A werden Arbeitsabläufe von einer Fachperson im Video durchgeführt und vom Nutzer beobachtet. In Art B werden arbeitsaufgabenrelevante Stellen in der gezeigten Umgebung durch «!»-Symbole markiert. In Art C werden keine Markierungen eingesetzt, relevante Stellen müssen vom Nutzer entdeckt werden. Die Studie mit 30 Teilnehmern im Within-Subject-Design prüft unter anderem die Hypothesen, ob sich die Explorationsart auf die Gebrauchstauglichkeit (SUS), das Benutzungserlebnis (UEQ) und die eingenomme-ne Rolle der nutzenden Person (aktiv/passiv) auswirkt. Bei allen Explorationsarten liegt eine vergleichbar hohe Gebrauchstauglichkeit vor. Das Benutzungserlebnis ist sowohl in Art B als auch in Art C signifikant höher als in Art A. In Art C wird die eigene Nutzerrolle aktiver eingeschätzt als in Art A und B. Art B ist wiederum aktiver als Art A. Das bessere Benutzungserlebnis und die aktivere Rolle der nutzenden Person bei gleichbleibend ho-her Gebrauchstauglichkeit machen die Explorationsarten B (markierte Stellen) und C (un-markierte Umgebung) interessant für die Wissensvermittlung von praktischen Inhalten
Automotive Manufacturers and Their Stumble from one Supply Crisis to Another: Procurement Departments Could be the Game Changer by Using Data Analytics, but…Klee, Sven; Janson, Andreas; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). Maui, Hawaii, USA, 2023.
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With this paper, we examine the use of data analytics for crisis management in automotive procurement departments. Possible business values of data analytics were part of numerous research approaches. Nevertheless, automotive manufacturers are repeatedly confronted with supply chain disruptions. Procurement departments have a central role within supply chains and are predominantly responsible for stable supply processes. Taking into account the potential of data analytics, such crises should be avoided or at least mitigated. Thus, there is the question, why data analytics cannot currently help automotive procurement departments by facing such crises. We therefore evaluate problems and obstacles by implementing and using data analytics in automotive procurement departments. Therefore, we talk to experienced procurement experts for evaluating practical insights. With our findings we provide practical insights and applicable recommendations for action with the goal of helping procurement leaders to better leverage data analytics for meeting current and future crises.
How Videoconferencing and its Affordances Transformed Teaching in Schools During COVID-19 Pandemic.Dickhaut, Ernestine; Li, Mahei Manhai; Janson, Andreas. In Hawaii international conference on system sciences (HICSS). Maui, Hawaii, 2023.
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The COVID-19 pandemic has brought about major changes in digitization in many areas of life and professions. New areas were digitized almost overnight, the school system in Germany was no exception leading to a demand for videoconferencing tools and communication platforms. These technologies have many different functionalities that need to be discovered, explored, and exploited by the user. Given the disruptive events that the COVID pandemic brought to us, this paper aims to shed light on how the dynamics of discovery, exploration, and exploitation unfolds. We use a functional affordance theory perspective to analyze and understand how user learn to use new technologies. To do this, we conducted an exploratory case-study-based research design including interviews with teachers from various schools to analyze how they appropriate new technologies to develop an explanatory theoretical model.
Kritische Kompetenzen für die post-digitale (Politik der) Lebensführung.Lamla, Jörn. In forum für Kinder- und Jugendpsychiatrie, Psychosomatik und Psychotherapie, 13(3+4), pp. 5–25. 2023.
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Investigating Relevant Data in Automotive Procurement Departments: External Shocks as Transparency Creator for Data Deficits in Decision-Making.Klee, Sven; Janson, Andreas. In Information Systems Frontiers (Inf Syst Front). 2023.
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Uncertainty becomes the new normal for organizations worldwide. Many organizations are dependent on complex global supply chains. COVID-19, but also environmental disasters or the war in Ukraine, demonstrate the volatility of supply chains. Procurement departments are the central interface between internal and external stakeholders and must manage the supply chain stability what requires fast and accurate decision-making. External shocks and sudden disruptions of central supply chains illustrated that data analytics could not prevent disruptions, although sound research on competitive advantages and numerous investments should have enabled organizations to data-driven decision-making. Rather, it became transparent, that there are numerous data deficits in organizations. We did an interview-based study with 23 procurement and supply chain experts about relevant data sets and the status of its usability. We contribute to theory and practice by uncovering relevant aspects of data and provide theoretical propositions on how decision-making can be improved in automotive procurement departments.
Anonymisierung von Patientendaten durch Fremdlabore für Dritte – Zur anonymisierenden Wirkung der Pseudonymisierung; datenschutzrechtliche Darstellung anhand eines Fallbeispiels.Johannes, Paul C.; Geminn, Christian. In Medizinrecht, (5), pp. 368–372. 2023.
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Wegfall der Meldeobliegenheit – Kein Ruhen des Krankengeldanspruchs im eAU-Verfahren – Besprechung von LSG Nordrhein-Westfalen, Urt. v. 16.11.2022 – L 10 KR 245/22.Lorenz, L. In Betriebs-Berater, 2023, pp. 827–831. 2023.
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6G Fabric Compiles Microdomains for Sophisticated Service Delivery.David, K.; Al-Dulaimi, A.; Haas, H.; Hu, R.Q. In IEEE Vehicular Technology Magazine, pp. 16–18. 2023.
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Synthesizing Training Data with Generative Adversarial Networks: Towards the Design of a Data-Sharing Ecosystem Platform for Fraud Detection.Karst, Fabian Sven; Li, Mahei Manhai; Leimeister, Jan Marco. In International Conference on Design Science Research in Information Systems and Technology (DESRIST). Pretoria, South Africa, 2023.
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Financial fraud has a severe impact on the general population. While financial institutions have technological capabilities for fraud detection using intelligent AI systems, the delay until they have collected a sufficient size of fraudulent data to train their fraud detection models creates a costly vulnerability. One major challenge for quickly training data lies in the inability to share fraud detection training data with other financial institutions, due to data and privacy regulations. Thus, we create the concept for a data-sharing ecosystem platform that addresses data anonymity concerns by creating synthesized training data based on each institution’s fraud detection training data sets. We rely on the advantages of generative adversarial networks (GAN) to quickly construct a shared dataset for all ecosystem members. Applying design science research, this paper derives design knowledge based on financial fraud detection literature, data sharing between financial institutions, GANs and modular systems theory for the design of a plat-form architecture for data-sharing ecosystems.
Utilizing Continuous Kernels for Processing Irregularly and Inconsistently Sampled Data With Position-Dependent Features.Magnussen, Birk Martin; Stern, Claudius; Sick, Bernhard. In International Conference on Autonomic and Autonomous Systems (ICAS), pp. 49–53. ThinkMind, 2023.
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Continuous Kernels have been a recent development in convolutional neural networks. Such kernels are used to process data sampled at different resolutions as well as irregularly and inconsistently sampled data. Convolutional neural networks have the property of translational invariance (e.g., features are detected regardless of their position in the measurement domain), which is unsuitable for certain types of data, where the position of detected features is relevant. However, the capabilities of continuous kernels to process irregularly sampled data are still desired. This article introduces a novel method utilizing continuous kernels for detecting global features at absolute positions in the data domain. Through a use case in processing multiple spatially resolved reflection spectroscopy data, which is sampled irregularly and inconsistently, we show that the proposed method is capable of processing such data natively without additional preprocessing as is needed using comparable methods. In addition, we show that the proposed method is able to achieve a higher prediction accuracy than a comparable network on a dataset with position-dependent features. Furthermore, a higher robustness to missing data compared to a benchmark network using data interpolation is observed, which allows the network to adapt to sensors with individual failed components without the need for retraining.
Leveraging Repeated Unlabelled Noisy Measurements to Augment Supervised Learning.Magnussen, Birk Martin; Stern, Claudius; Sick, Bernhard. In International Conference on Computational Intelligence and Intelligent Systems (CIIS), pp. 1–6. ACM, 2023.
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Often, producing large labelled datasets for supervised machine learning is difficult and expensive. In cases where the expensive part is due to labelling and obtaining ground truth, it is often comparably easy to acquire large datasets containing unlabelled data points. For reproducible measurements, it is possible to record information on multiple data points being from the same reproducible measurement series, which should thus have an equal but unknown ground truth. In this article, we propose a method to incorporate a dataset of such unlabelled data points for which some data points are known to be equal in end-to-end training of otherwise labelled data. We show that, with the example of predicting the carotenoid concentration in human skin from optical multiple spatially resolved reflection spectroscopy data, the proposed method is capable of reducing the required number of labelled data points to achieve the same prediction accuracy for different model architectures. In addition, we show that the proposed method is capable of reducing the negative impact of noisy data when performing a repeated measurement of the same sample.
Graph Pooling Provably Improves Expressivity.Lachi, Veronica; Moallemy-Oureh, Alice; Roth, Andreas; Welke, Pascal. In Workshop on New Frontiers in Graph Learning, NeurIPS, pp. 1–7. 2023.
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In the domain of graph neural networks (GNNs), pooling operators are fundamental to reduce the size of the graph by simplifying graph structures and vertex features. Recent advances have shown that well-designed pooling operators, coupled with message-passing layers, can endow hierarchical GNNs with an expressive power regarding the graph isomorphism test that is equal to the Weisfeiler-Leman test. However, the ability of hierarchical GNNs to increase expressive power by utilizing graph coarsening was not yet explored. This results in uncertainties about the benefits of pooling operators and a lack of sufficient properties to guide their design. In this work, we identify conditions for pooling operators to generate WL-distinguishable coarsened graphs from originally WL-indistinguishable but non-isomorphic graphs. Our conditions are versatile and can be tailored to specific tasks and data characteristics, offering a promising avenue for further research.
Sampling-based Uncertainty Estimation for an Instance Segmentation Network.Heidecker, Florian; El-Khateeb, Ahmad; Sick, Bernhard. In arXiv e-prints, p. arXiv:2305.14977. 2023.
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The examination of uncertainty in the predictions of machine learning (ML) models is receiving increasing attention. One uncertainty modeling technique used for this purpose is Monte-Carlo (MC)-Dropout, where repeated predictions are generated for a single input. Therefore, clustering is required to describe the resulting uncertainty, but only through efficient clustering is it possible to describe the uncertainty from the model attached to each object. This article uses Bayesian Gaussian Mixture (BGM) to solve this problem. In addition, we investigate different values for the dropout rate and other techniques, such as focal loss and calibration, which we integrate into the Mask-RCNN model to obtain the most accurate uncertainty approximation of each instance and showcase it graphically.
Vorb. zu § 3a.Hornung, G. In Verwaltungsrecht. VwVfG, 4.th ed. Verlag C.H.Beck, Loseblatt, München, 2023.
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Persistent UAV Formation Flight by Dynamic Agent Replacement and Leader Selection.Bauer, Maximilian; Alhamwy, Yasin; Geihs, Kurt. In Progressive and Integrative Ideas and Applications of Engineering Systems Under the Framework of IOT and AI, Y. Ma (ed.), pp. 106–117. Springer Nature Singapore, Singapore, 2023.
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First responders use Unmanned Aerial Vehicles (UAV) in disaster response to obtain a situational overview. Flying in a formation has the advantage of having multiple airborne sensors and cameras. However, UAV formations are limited in terms of flight time. In this paper we present a system that is capable of achieving persistent formation flight. The system does not need a central coordination unit and is self-organizing by triggering UAVs on the ground to take-off and join the formation whenever a UAV in the formation is about to run out of battery. The replacement process allows the formation to be kept intact for as long as possible. Onboard each UAV, the flight controller handles the formation-keeping and trajectory following while a higher level multi-agent-coordination unit accesses the flight controller to send commands. The leader-follower formation is designed to be rigid and independent of the number of UAVs present in the formation. A prototype consisting of four simulated UAVs was implemented as a proof of concept, which worked as expected.
Datenschutzzertifizierung: Ende des Dornröschenschlafs? Potentiale und Erfolgsfaktoren der Zertifizierung als Instrument für eine effektive und grundrechtsorientierte Data Governance.Hornung, G.; Kohpeiß, M. In Daten-Fairness in einer globalisierten Welt, M. Friedewald, A. Roßnagel, R. Neuburger, F. Bieker, G. Hornung (eds.), pp. 173–200. 2023.
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Context Information for Corner Case Detection in Highly Automated Driving.Heidecker, Florian; Susetzky, Tobias; Fuchs, Erich; Sick, Bernhard. In IEEE International Conference on Intelligent Transportation Systems (ITSC), pp. 1522–1529. IEEE, 2023.
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Context information provided along with a dataset can be very helpful for solving a problem because the additional knowledge is already available and does not need to be extracted. Moreover, the context indicates how diverse a dataset is, i.e., how many samples per context category are available to train and test machine learning (ML) models. In this article, we present context annotations for the BDD100k image dataset. The annotations comprise, for instance, information about daytime, road condition (dry/wet), and dirt on the windshield. Sometimes, no or only little data are available for unique or rare combinations of these context attributes. However, data that matches these context conditions is crucial when discussing corner cases: Firstly, most ML models, e.g., object detectors, are not trained on such data, which leads to the assumption that they will perform poorly in those situations. Secondly, data containing corner cases are required for validating ML models. With this in mind, separate ML models dedicated to context detection are useful for expanding the training set with additional data of special interest, such as corner cases.
DADO – Low-Cost Query Strategies for Deep Active Design Optimization.Decke, Jens; Gruhl, Christian; Rauch, Lukas; Sick, Bernhard. In International Conference on Machine Learning and Applications (ICMLA), pp. 1611–1618. IEEE, 2023.
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In this work, we apply deep active learning to the field of design optimization to reduce the number of computationally expensive numerical simulations widely used in industry and engineering. We are interested in optimizing the design of structural components, where a set of parameters describes the shape. If we can predict the performance based on these parameters and consider only the promising candidates for simulation, there is an enormous potential for saving computing power. We present two query strategies for self-optimization to reduce the computational cost in multi-objective design optimization problems. Our proposed methodology provides an intuitive approach that is easy to apply, offers significant improvements over random sampling, and circumvents the need for uncertainty estimation. We evaluate our strategies on a large dataset from the domain of fluid dynamics and introduce two new evaluation metrics to determine the model's performance. Findings from our evaluation highlights the effectiveness of our query strategies in accelerating design optimization. Furthermore, the introduced method is easily transferable to other self-optimization problems in industry and engineering.
Factorizing Lattices by Interval Relations.Koyda, Maren; Stumme, Gerd. In Int. J. Approx. Reason., 157, pp. 70–87. 2023.
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Corner Cases in Machine Learning Processes.Heidecker, Florian; Bieshaar, Maarten; Sick, Bernhard. In AI Perspectives & Advances, 6(1), pp. 1–17. 2023.
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Applications using machine learning (ML), such as highly autonomous driving, depend highly on the performance of the ML model. The data amount and quality used for model training and validation are crucial. If the model cannot detect and interpret a new, rare, or perhaps dangerous situation, often referred to as a corner case, we will likely blame the data for not being good enough or too small in number. However, the implemented ML model and its associated architecture also influence the behavior. Therefore, the occurrence of prediction errors resulting from the ML model itself is not surprising. This work addresses a corner case definition from an ML model's perspective to determine which aspects must be considered. To achieve this goal, we present an overview of properties for corner cases that are beneficial for the description, explanation, reproduction, or synthetic generation of corner cases. To define ML corner cases, we review different considerations in the literature and summarize them in a general description and mathematical formulation, whereby the expected relevance-weighted loss is the key to distinguishing corner cases from common data. Moreover, we show how to operationalize the corner case characteristics to determine the value of a corner case. To conclude, we present the extended taxonomy for ML corner cases by adding the input, model, and deployment levels, considering the influence of the corner case properties.
Einführung eines DSGVO-konformen Videokonferenzsystems in hessischen Schulen. Projektergebnisse des ZEVEDI Ad hoc-Vorhabens „Wechselkosten zum DSGVO-konformen VC-System des Schulportals Hessen“. Dickhaut, Ernestine; Schaup, Lasse; Li, Mahei Manhai; Leimeister, Jan Marco. Vol. 13. Kassel University Press (KUP), Kassel, 2023.
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Die Pandemie hat zu einem abrupten Umstellen des Präsenz‐Schulbetriebs auf Online‐Lehre gezwungen. Man könnte auch von einem Digitalisierungszwang sprechen. Nach der Pandemie gilt es zu analysieren, was gut und bewahrenswert ist und was verändert werden muss – aus unterschiedlichsten Gründen. Zudem gilt es diese Phase, die 2020 mit Notmaßnahmen begann, als Chance zu begreifen, und das Momentum für mehr und gute digitale Lösungen zu nutzen. In Hessen (und darüber hinaus) gilt es nun zukunftsfähige Infrastrukturen für Schulen zu entwickeln. Diese sollen gutes Lehren und Lernen für Schüler: innen, Lehrende und Eltern ermöglichen und damit den klassischen Präsenzunterricht erweitern, anreichern und insgesamt wirksamer machen. Zugleich sollten alle Beteiligten beim Aufbau solcher Infrastrukturen und darauf aufbauender Anwendungen verstehen, dass es auch darum gehen muss, Lösungen zu erarbeiten, die die digitale Souveränität stärken. Digitale Souveränität beschreibt die Fähigkeiten und Möglichkeiten von Individuen und Institutionen, ihre Rolle(n) in der digitalen Welt selbstständig, selbstbestimmt und sicher ausüben zu können. // 1. Ebenso gehört digitale Souveränität zu den Leitbildern des digitalen Wandels in Europa: Bürgerinnen und Bürger müssen die Möglichkeit haben, Softwarelösungen zu nutzen, die ihre Grundrechte – Datenschutz gemäß europäischem Recht und informationelle Selbstbestimmung – respektieren. Aus dem Blickwinkel des Datenschutzes liegt digitale Souveränität vor, wenn die verantwortlichen Stellen informationstechnische Systeme und Dienste nutzen, die ihnen ermöglichen, ihre datenschutzrechtlichen Pflichten zu erfüllen. // 2. Es gilt also abzuwägen, ob bspw. die Vorteile von Consumer Software, die oftmals hohe Gebrauchstauglichkeit gepaart mit hoher Bekannt‐ und Vertrautheit bei vielen Nutzern die Nachteile durch fehlende Einhaltung von Datenschutzvorgaben, mangelnder Rechtssicherheit oder dem Untergraben digitaler Souveränität überwiegen. Darüber hinaus wird aber allzu oft übersehen, dass mehr als die o.g. Technologiewahl insbesondere auch die zielgerichtete organisationale Einführung und die Einbettung der IT in Arbeitsprozesse, Strukturen und soziale Kontexte massgeblich zum Erfolg beitragen. Erfolg ist hierbei zu messen in art‐ und sachgerechter, freiwilliger und intensiver Nutzung von Softwarelösungen in Lehr‐ und Lernprozessen. Es geht also auch um den organisationalen Einführungsprozess in hessische Schulen und das Unterstützen und Befördern der individuellen Aneignung der neuen Softwarelösungen bei allen Anspruchsgruppen. Denn nur wenn Software genutzt wird, entfaltet sich ihr potenzieller Nutzen. Ziel unseres Vorhabens ist daher, diese Zieldefinition nicht aus den Augen zu verlieren und alle Akteure dabei zu unterstützen, die Einführung von Videokonferenzsoftware an hessischen Schulen zu befördern und insbesondere auch am Erreichen dieses Ziels zu messen.
An Examination of Organic Computing Strategies in Design Optimization.Decke, Jens. In Organic Computing -- Doctoral Dissertation Colloquium 2023, S. Tomforde, C. Krupitzer (eds.), pp. 41–54. kassel university press, 2023.
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In the field of design optimization, numerical equation solvers, commonly used for finite element analysis and computational fluid dy- namics, impose significant computational demands. The iterative nature of design optimization, involving numerous simulations, magnifies re- source requirements in terms of time, energy, costs, and greenhouse gas emissions. Accelerating this process has been a long-standing research challenge, driven by the potential for resource savings and the ability to tackle increasingly complex problems. Recently, organic computing methods have gained prominence as promising approaches to address this challenge. This study aims to bridge the gap by integrating tech- niques from deep learning, active learning, and generative learning into the field of design optimization. The goal is to accelerate the design op- timization process while addressing specific challenges such as exploring large and complex design spaces and evaluating the advantages and con- straints of these methods. This research has the potential to significantly impact the industrial use of design optimization by providing faster and more efficient tools.
Indien: Der neue Digital Personal Data Protection Act.Geminn, Christian. In ZD-Aktuell, (19, 01404). 2023.
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Working with Diversity in Informatics.Draude, Claude. In Hochschuldidaktik Informatik HDI 2021, of Commentarii informaticae didacticae, pp. 13–33. Universitätsverlag Potsdam, 2023.
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Diversity is a term that is broadly used and challenging for informatics research, development and education. Diversity concerns may relate to unequal participation, knowledge and methodology, curricula, institutional planning etc. For a lot of these areas, measures, guidelines and best practices on diversity awareness exist. A systemic, sustainable impact of diversity measures on informatics is still largely missing. In this paper I explore what working with diversity and gender concepts in informatics entails, what the main challenges are and provide thoughts for improvement. The paper includes definitions of diversity and intersectionality, reflections on the disciplinary basis of informatics and practical implications of integrating diversity in informatics research and development. In the final part, two concepts from the social sciences and the humanities, the notion of “third space”/hybridity and the notion of “feminist ethics of care”, serve as a lens to foster more sustainable ways of working with diversity in informatics.
Australien: Neue Befugnisse der Datenschutzaufsicht.Geminn, Christian. In ZD-Aktuell, (3, 01052). 2023.
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2022[ to top ]

Analyzing Design Knowledge Representation in Design Science Research and Deriving Recommendations to Support Design Knowledge Codification.Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In The Transdisciplinary Reach of Design Science Research. 17th International Conference on Design Science Research in Information Systems and Technology (DESRIST), Vol. 13229 of Lecture Notes in Computer Science, A. Drechsler, A. Gerber, A. Hevner (eds.), pp. 417–428. St. Petersburg, Florida, USA, 2022.
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The goal of design science research is the generation of novel artifacts. Thereby DSR projects generate valuable design knowledge, thus, underscoring the importance to codify of design knowledge for achieving scientific progress. The research community observes that DSR projects generate a large amount of design knowledge, but the developed knowledge often ends as a single success story. To counter this situation, we analyze the variety of design knowledge representation forms that have been published in the AIS Senior Scholars’ Basket in design science research papers. Based on our systematic literature review, we identify prevalent ways of design knowledge representations. We provide as a central contribution how to effectively communicate design knowledge through the derivation of recommendations that provides practical guidance to support researchers and practitioners in making design knowledge contributions reusable and applicable.
Conceptualizing Design Knowledge in IS Research – A Review and Taxonomy of Design Knowledge Properties.Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS), pp. 5778–5787. Hawaii, USA, 2022.
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Design science projects are of great interest in information systems (IS) research. Typically, design-oriented projects generate valuable design knowledge through the design and possible instantiation of artifacts. Although designing novel artifacts and accumulating design knowledge is common practice in IS, there is still limited shared knowledge about the distinctive characteristics of design knowledge to facilitate its accumulation. To address this issue, we develop a design knowledge taxonomy and contribute to a deeper understanding of design knowledge properties. The taxonomy is grounded on a systematic literature review, followed by a combination of empirical-to-conceptual and conceptual-to-empirical iterations. We evaluate the taxonomy by interviewing six domain experts and demonstrate its practical application and utility. Thus, the taxonomy consists of key dimensions and characteristics of design knowledge and contributes to a better scientific understanding of its characteristics. Practitioners can use the taxonomy as an instrument to further understand, design, and accumulate design knowledge.
It Takes Two to Tango: Design Thinking and Design Patterns for Better System Development.Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In Design Thinking for Software Engineering, J. Hehn, D. Mendez, W. Brenner, M. Broy (eds.), pp. 201–211. Springer, Cham, Switzerland, 2022.
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Design Thinking has become a well-established approach to solving wicked problems through creative and conceptual solutions. Thus, Design Thinking approaches usually end with finding novel solutions but do not offer support in the practical implementation of these solutions. To bridge the gap between finding creative solutions and implementing them into suitable end products, we see Design Patterns as a useful approach to combine the advantages of both sides—the human-centered Design Thinking approach and the practical implementation in system development. Design Patterns offer proven solutions to recurring problems and thus provide design knowledge to solve complex design problems. In this contribution, we demonstrate how Design Patterns act as a complement to Design Thinking by using the example of designing a lawful smart personal learning assistant. We use Design Thinking to extract the design solution of the lawful learning assistant and develop it with the help of Design Patterns. We demonstrate the use of Design Patterns by using the deletion routine Design Pattern as an example of how a Design Pattern can be used for lawful design in addition to their known fields of application in system development. The evaluation results show that the combination of Design Thinking and Design Patterns lead to an approach that not only identifies novel, complex solutions but also supports their practical implementation.
Efficient SVDD sampling with approximation guarantees for the decision boundary.Englhardt, Adrian; Trittenbach, Holger; Kottke, Daniel; Sick, Bernhard; Böhm, Klemens. In Machine Learning, 111(4), pp. 1349–1375. Springer, 2022.
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Support Vector Data Description (SVDD) is a popular one-class classifier for anomaly and novelty detection. But despite its effectiveness, SVDD does not scale well with data size. To avoid prohibitive training times, sampling methods select small subsets of the training data on which SVDD trains a decision boundary hopefully equivalent to the one obtained on the full data set. According to the literature, a good sample should therefore contain so-called boundary observations that SVDD would select as support vectors on the full data set. However, non-boundary observations also are essential to not fragment contiguous inlier regions and avoid poor classification accuracy. Other aspects, such as selecting a sufficiently representative sample, are important as well. But existing sampling methods largely overlook them, resulting in poor classification accuracy. In this article, we study how to select a sample considering these points. Our approach is to frame SVDD sampling as an optimization problem, where constraints guarantee that sampling indeed approximates the original decision boundary. We then propose RAPID, an efficient algorithm to solve this optimization problem. RAPID does not require any tuning of parameters, is easy to implement and scales well to large data sets. We evaluate our approach on real-world and synthetic data. Our evaluation is the most comprehensive one for SVDD sampling so far. Our results show that RAPID outperforms its competitors in classification accuracy, in sample size, and in runtime.
Cognitive automation.Engel, Christian; Ebel, Philipp; Leimeister, Jan Marco. In Electronic Markets, 32(1), pp. 339–350. 2022.
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Facilitated by AI technology, the phenomenon of cognitive automation extends the scope of deterministic business process automation (BPA) through the probabilistic automation of knowledge and service work. By transforming work systems through cognitive automation, organizations are provided with vast strategic opportunities to gain business value. However, research lacks a unified conceptual lens on cognitive automation, which hinders scientific progress. Thus, based on a Systematic Literature Review, we describe the fundamentals of cognitive automation and provide an integrated conceptualization. We provide an overview of the major BPA approaches such as workflow management, robotic process automation, and Machine Learning-facilitated BPA while emphasizing their complementary relationships. Furthermore, we show how the phenomenon of cognitive automation can be instantiated by Machine Learning-facilitated BPA systems that operate along the spectrum of lightweight and heavyweight IT implementations in larger IS ecosystems. Based on this, we describe the relevance and opportunities of cognitive automation in Information Systems research.
Commonsense Knowledge for Human-Robot Collaboration in Hybrid Search and Rescue Teams.Geihs, Kurt; Jakob, Stefan; Opfer, Stephan; Alhamwy, Yasin. In 2nd International Workshop on Human-Robot Interaction: New Trends in Service and Industry (HRI-SI2022). Naples/Italy, 2022.
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Kontrollierte Verbindungen. Rezension zu „Die Macht der Plattformen. Politik in Zeiten der Internetgiganten“ von Michael Seemann.Kropf, Jonathan. In Soziopolis - Gesellschaft beobachten. Soziopolis, 2022.
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Why the agile mindset matters.Eilers, Karen; Peters, Christoph; Leimeister, Jan Marco. In Technological Forecasting and Social Change, 179(121650), pp. 1–14. 2022.
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Volatility, uncertainty, complexity, and ambiguity (VUCA) are drivers in today's business world. To perform amid this accelerated change and the digitalization progress, organizations are implementing agility. However, such an implementation does not happen without stumbling blocks and some fail. One reason for this is actors’ agile mindset (AM), which is necessary to deal succefully within a VUCA environment. Knowledge of the AM is in its infancy and conceptualization and measuring tools for it are lacking. Furthermore, the relation of the AM in terms of strategic agility and performance is still unclear. Our study aims to close these gaps. We examine AM through 15 interviews and a survey (N = 449) to predict strategic agility and performance. As a result, we conceptualize AM as an attitude that comprises four dimensions: attitude towards 1) learning spirit, 2) collaborative exchange, 3) empowered self-guidance, and 4) customer co-creation. Furthermore, we describe how actors with an AM deal with new technologies. We found that AM affects organizational performance mediated by strategic agility. These findings contribute to the agility and management research by providing a conceptualization and measuring instrument for AM. Furthermore, its relevance for strategic agility is explained and its relationship with organizational performance outlined.
The Role of Design Patterns in the Development and Legal Assessment of Lawful Technologies.Dickhaut, Ernestine; Li, Mahei Manhai; Janson, Andreas; Leimeister, Jan Marco. In Electronic Markets (Electron Markets), 32(4), pp. 2311–2331. 2022.
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Novel technologies such as smart personal assistants integrate digital services into everyday life. These services use personal data to offer personalized services. While they are subject to special data protection regulations at the time of development, there are few guidelines describing the transition from legal requirements to implementation. To reduce risks, services depend on external legal assessments. With developers and legal experts often missing either legal or technical knowledge, the challenge lies in bridging this gap. We observe that design patterns support both developers and legal experts, and we present an approach in which design patterns are leveraged to provide twofold value for both developers and legal experts when dealing with novel technologies. We conducted a revelatory case study for smart personal assistants and scaffolded the case interpretation through cognitive fit theory. On the basis of the findings, we develop a theoretical model to explain and predict the twofold value of design patterns to develop and assess lawful technologies.
Understanding the Design Elements Affecting User Acceptance of Intelligent Agents: Past, Present and Future.Elshan, Edona; Zierau, Naim; Engel, Christian; Janson, Andreas; Leimeister, Jan Marco. In Information Systems Frontiers (Inf Syst Front), 24(3), pp. 699–730. 2022.
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Intelligent agents (IAs) are permeating both business and society. However, interacting with IAs poses challenges moving beyond technological limitations towards the human-computer interface. Thus, the knowledgebase related to interaction with IAs has grown exponentially but remains segregated and impedes the advancement of the field. Therefore, we conduct a systematic literature review to integrate empirical knowledge on user interaction with IAs. This is the first paper to examine 107 Information Systems and Human-Computer Interaction papers and identified 389 relationships between design elements and user acceptance of IAs. Along the independent and dependent variables of these relationships, we span a research space model encompassing empirical research on designing for IA user acceptance. Further we contribute to theory, by presenting a research agenda along the dimensions of the research space, which shall be useful to both researchers and practitioners. This complements the past and present knowledge on designing for IA user acceptance with potential pathways into the future of IAs.
Requirements for AI-based Teammates: A Qualitative Inquiry in the Context of Creative Workshops.Elshan, Edona; Siemon, Dominik; de Vreede, Triparna; de Vreede, Gert-Jan; Oeste-Reiß, Sarah; Ebel, Philipp. In Hawaii International Conference on System Sciences (HICSS). 2022.
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Innovation requires organizations to tap into the knowledge and creativity of teams. However, teams are confronted with massive amounts of data and information, necessitating a broad set of knowledge, methodologies, and approaches to solve problems and innovate. Consequently, team composition has become a critical challenge. Recent advances in artificial intelligence (AI) may assist in addressing this challenge. As AI is permeating both business and private sectors, organizational teams may be augmented with AI team members. However, given the nascent nature of this phenomenon, little is known about the specific roles and requirements for such AI teammates. Within an interview study we discover common challenges in teams and identify recurring capability gaps of participants and behaviors that negatively impact the team's collective performance. Based on our findings, we propose requirements for AI-based teammates to address these gaps and support beneficial collaboration between humans and AI in teams.
Zusammenfassung und Ausblick.Lamla, Jörn. In Verbrauchermacht in Bewegung. Protest, Politik und sozio-technische Infrastrukturen, D. Hohnsträter, S. Krankenhagen, J. Lamla (eds.), pp. 161–168. Nomos, Baden-Baden, 2022.
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Priority-Dependent Display of Notifications in the Peripheral Field of View of Smart Glasses.Faulhaber, A. K.; Hoppe, M.; Schmidt, L. In 28th IEEE Conference on Virtual Reality and 3D User Interfaces: Abstracts and Workshops (Christchurch 2022), pp. 586–587. IEEE, Piscataway, 2022.
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We propose a concept for displaying notifications in the peripheral field of view of smart glasses aiming to achieve a balance between perception and distraction depending on the priority of the notification. We designed three different visualizations for notifications of low, medium, and high priority. To evaluate this concept, we conducted a study with 24 participants who reacted to the notifications while performing a primary task. Reaction times for the low-priority notification were significantly higher. The medium- and high-priority notifications did not show a clear difference.
Pose and Semantic Map Based Probabilistic Forecast of Vulnerable Road Users Trajectories.Kress, Viktor; Jeske, Fabian; Zernetsch, Stefan; Doll, Konrad; Sick, Bernhard. In IEEE Transactions on Intelligent Vehicles, 8(3), pp. 2592–2603. IEEE, 2022.
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In this article, an approach for probabilistic trajectory forecasting of vulnerable road users (VRUs) is presented, taking into consideration past movements and the surrounding environment. Past movements are represented by 3D poses reflecting the posture and movements of individual body parts. The surrounding environment is modeled in the form of semantic maps showing, e.g., the course of streets, sidewalks, and the occurrence of obstacles. Forecasts are generated in grids discretizing the space and in the form of arbitrary discrete probability distributions. The distributions are evaluated for their reliability, sharpness, and positional accuracy. We compare our method with two approaches providing forecasts in the form of continuous probability distributions, and we discuss their respective advantages and disadvantages. We thereby investigate the impact of poses and semantic maps. Using a technique we refer to as spatial label smoothing, our approach is able to achieve reliable forecasts. Overall, the 3D poses have a positive impact on the forecasts. The semantic maps facilitate the adaptation of the probability distributions to the individual situation and prevent forecasts of trajectories leading through obstacles. Our method is evaluated on a dataset recorded in inner-city traffic using a research vehicle. The dataset has been made publicly available.
EmotionAware 2022: Sixth International Workshop on Emotion Awareness for Pervasive Computing Beyond Traditional Approaches - Welcome and Committees.David, Klaus; Dobbins, Chelsea; Okoshi, Tadashi; Ohly, Sandra; Peltonen, Ella. In 2022 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2022, p. i-ii. IEEE Computer Society, Los Alamitos, CA, USA, 2022.
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NDNET: A Unified Framework for Anomaly and Novelty Detection.Decke, Jens; Schmeißing, Jörn; Botache, Diego; Bieshaar, Maarten; Sick, Bernhard; Gruhl, Christian. In International Conference on Architecture of Computing Systems (ARCS), pp. 197–210. Springer, 2022.
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We introduce NDNET (https://novelty-detection.net/p/ndnet), an anomaly and novelty detection library that implements various detection algorithms adjusted for online processing of data streams. The intention of this library is threefold: 1) Make experimentation with different anomaly and novelty detection algorithms simple. 2) Support the development of new novelty detection approaches by providing the mCANDIES framework. 3) Provide fundamentals to analyze and evaluate novelty detection algorithms on data streams. The library is freely available and developed as open-source software.
A Stopping Criterion for Transductive Active Learning.Kottke, Daniel; Sandrock, Christoph; Krempl, Georg; Sick, Bernhard. In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECMLPKDD), pp. 468–484. Springer, 2022.
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In transductive active learning, the goal is to determine the correct labels for an unlabeled, known dataset. Therefore, we can either ask an oracle to provide the right label at some cost or use the prediction of a classifier which we train on the labels acquired so far. In contrast, the commonly used (inductive) active learning aims to select instances for labeling out of the unlabeled set to create a generalized classifier, which will be deployed on unknown data. This article formally defines the transductive setting and shows that it requires new solutions. Additionally, we formalize the theoretically cost-optimal stopping point for the transductive scenario. Building upon the probabilistic active learning framework, we propose a new transductive selection strategy that includes a stopping criterion and show its superiority.
Privatheit und Digitalität: Zur soziotechnischen Transformation des selbstbestimmten Lebens.Lamla, Jörn; Büttner, Barbara; Ochs, Carsten; Pittroff, Fabian; Uhlmann, Markus. In Die Zukunft von Privatheit und Selbstbestimmung, A. Roßnagel, M. Friedewald (eds.), pp. 125–158. Springer Vieweg, Wiesbaden, 2022.
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Der Beitrag wendet sich dem ambivalenten Zusammenspiel von Privatheit und Digitalität zu, indem er deren Relevanz für Diskurse und Praktiken der Selbstbestimmung ausleuchtet und auf die soziotechnischen Transformationen dieses Zusammenspiels bezieht. Privatheit und Digitalität werden dabei als gesellschaftlich mitkonstituierte Sozialformen, Assemblagen oder Kommunikationsverhältnisse perspektiviert, die von historisch sich wandelnden soziokulturellen Einflussgrößen durchzogen sind. Um die skizzierte Perspektive einzunehmen werden wir zunächst die einschlägigen soziologischen Wissensbestände zu einer kursorischen Darstellung gesellschaftstheoretischer Perspektiven auf Privatheit verdichten. Daraufhin wenden wir uns den soziologischen Digitalisierungsforschungen zu, die die Konzeptualisierung von Privatheit nicht unberührt lassen. Hierbei wird v. a. herausgearbeitet, dass das soziologische und gesellschaftstheoretische Bild von Privatheit um Aspekte des Technischen und Materiellen erweitert werden muss. Theoretisch entsprechend eingestellt werden wir sodann eine Analyse von Selbstbestimmung unter soziodigitalen Verhältnissen präsentieren, die sich an vier zentralen Problemfeldern von Privatheit und Digitalität entfaltet: Die soziale Prämierung von Sichtbarkeit; soziale Konsequenzen digitaler Verhaltensformung; die soziale Dynamik datenökonomischer Erlösmodelle; sowie die Auswirkungen, die sich aus alldem für die Entscheidungsfreiheiten von Nutzenden ergeben. Im Fazit des Beitrags werden Konsequenzen für eine demokratische und an Selbstbestimmung orientierte Gestaltung von Privatheit benannt. Hierbei zeigt sich ein erheblicher Bedarf an einer Politik der Gestaltung und Regulierung von soziodigitalen Infrastrukturen, die eine Datenökonomie befördert, welche sich der demokratischen Kontrolle, Mitbestimmung und v. a. der Kritik öffnet. Zentrale Kompetenz individueller, wie kollektiver Selbstbestimmung wird damit die Fähigkeit zur Kritik der normierenden Gehalte und Effekte soziodigitaler Infrastrukturen. Diese muss aus den soziodigitalen Verhältnissen und praktischen Situationen selbst erwachsen und die Pluralität von Rechtfertigungsordnungen moderner Gesellschaften einbeziehen, um so die Kontingenz bestehender normativer Ordnungen erfahrbar und alternative Infrastrukturgestaltungspfade begehbar zu machen: Nur wenn die Infrastrukturen gewährleisten, dass der Faden zur kritischen Praxis nicht reißt, kann Privatheit unter soziodigitalen Bedingungen Ort der Selbstbestimmung bleiben.
Predicting flow stress behavior of an AA7075 alloy using machine learning methods.Decke, Jens; Engelhardt, Anna; Rauch, Lukas; Degener, Sebastian; Sajjadifar, Seyedvahid; Scharifi, Emad; Steinhoff, Kurt; Niendorf, Thomas; Sick, Bernhard. In Crystals, 9(12), pp. 1–19. MDPI, 2022.
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This work focuses on the prediction of hot deformation behavior of thermo-mechanically processed precipitation hardenable aluminum alloy AA7075. Data available are focusing on a novel hot forming process at different tool temperatures ranging from 24°C to 350°C to set different cooling rates after solution-heat-treatment. Isothermal uniaxial tensile tests in the temperature range from 200°C to 400°C and at strain rates ranging from 0.001 s^-1 to 0.1 s^-1 were carried out on four different material conditions. The present paper mainly focuses on a comparative study of modeling techniques based on Machine Learning (ML) and the well-known Zerilli-Armstrong model (Z-A) as an empirically based reference. Work focused on predicting single data points of curves that the model was trained on. Due to the novel way data were split with respect to training and testing data, it becomes possible to predict entire stress-strain curves which leads to a reduction in the number of required laboratory experiments, finally saving costs and time in future experiments. While all investigated ML methods showed a higher performance than the Z-A model, the extreme Gradient Boosting model (XGB) showed the superior results, i.e., highest error reduction of 91% with respect to the Mean Squared Error.
Beiträge zur Interaktionsgestaltung bei Überwachung und Steuerung industriell eingesetzter mobiler Roboter. Cramar, L. In Vol. 3 of Schriftenreihe Mensch-Maschine-Systemtechnik. Kassel University Press, Kassel, 2022.
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Die Motivation, in der verfahrens- und prozesstechnischen Industrie mobile Roboter einzusetzen, sowohl zur Handhabung gefährlicher Gegenstände, z. B. von chemisch, biologisch oder radioaktiv kontaminiertem Material, als auch zur Entlastung des Menschen bei monotonen und vigilanzkritischen Tätigkeiten, hat in den vergangenen Jahrzehnten stark zugenommen. Durch die hohe Komplexität solcher Einsätze können die Robotersysteme allerdings nicht völlig autonom eingesetzt werden und erfordern eine Überwachung sowie bei Bedarf eine teleoperative Steuerung durch menschliche Operatoren, was ihnen einen semiautonomen Charakter verleiht. Die dazu erforderliche Überwachung sowie bei Bedarf Teleoperation mobiler Roboter erfolgt durch menschliche Operatoren aus der Leitwarte heraus, was für diese eine besondere Herausforderung darstellt: Neben der Planung des durchzuführenden Ansatzes, bei der alle Schritte und Besonderheiten bereits im Voraus zu planen sind, ist auch die Überwachung und Steuerung solcher Systeme mit besonderen Problemen und Schwierigkeiten behaftet. Um dem Zweck der Entlastung der Mitarbeiter gerecht zu werden, muss die Bedienung des Robotersystems entsprechend gestaltet sein. Da der Einsatz von Interaktionsmedien und -konzepten vor allem in sicherheitskritischen Bereichen einen noch innovativen Charakter trägt, muss besonders genau überprüft werden, ob die erwarteten Vorteile auch in diesem Kontext positiv bewertet werden können. Im Rahmen dieser Arbeit wurde anhand des Anwendungsfalls RoboGasInspector das Vorgehen zur Gestaltung einer gebrauchstauglichen Interaktion zur Überwachung und Steuerung der Inspektionsroboter und deren Einzelteile (bspw. Kamera und Roboterarm) nach dem Prinzip des menschzentrierten Gestaltungsansatzes vorgestellt. Den Schwerpunkt der Arbeit bildet dabei die evaluationsbasierte Ableitung konkreter Hinweise für die Gestaltung der Mensch-Roboter-Interaktion im ausgewählten Anwendungsfall. Welche Technologien in das Robotersystem integriert und zum erfolgreichen und sicheren Bedienen des Systems führen können, wurde anhand ausgewählter Beispiele im iterativen Gestaltungsprozess, von der Erhebung der Anforderungen über das Erarbeiten von Gestaltungslösungen sowie Evaluation dieser unter Laborbedingungen analysiert und diskutiert. Die Ableitung von Gestaltungsempfehlungen wurde anschließend exemplarisch vorgestellt und diskutiert.
Künstliche Intelligenz, Demokratie und Privatheit. Friedewald, Michael; Roßnagel, Alexander; Heesen, Jessica; Krämer, Nicole; Lamla, Jörn. In of Privatheit und Selbstbestimmung in der digitalen Welt | Privacy and Self-Determination in the Digital World. Nomos, Baden-Baden, 2022.
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Proactive hybrid learning and optimisation in self-adaptive systems: The swarm-fleet infrastructure scenario.Krupitzer, Christian; Gruhl, Christian; Sick, Bernhard; Tomforde, Sven. In Information and Software Technology, 145, p. 106826. Elsevier, 2022.
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Context: Smart and adaptive Systems, such as self-adaptive and self-organising (SASO) systems, typically consist of a large set of highly autonomous and heterogeneous subsystems that are able to adapt their behaviour to the requirements of ever-changing, dynamic environments. Their successful operation is based on appropriate modelling of the internal and external conditions. Objective: The control problem for establishing a near-to-optimal coordinated behaviour of systems with multiple, potentially conflicting objectives is either approached in a distributed (i.e., fully autonomous by the autonomous subsystems) or in a centralised way (i.e. one instance controlling the optimisation and planning process). In the distributed approach, selfish behaviour and being limited to local knowledge may lead to sub-optimal system behaviour, while the centralised approach ignores the autonomy and the coordination efforts of parts of the system. Method: In this article, we present a concept for a hybrid (i.e., integrating a central optimisation with a distributed decision-making process) system management that combines local reinforcement learning and self-awareness mechanisms of fully autonomous subsystems with external system-wide planning and optimisation of adaptation freedom that steers the behaviour dynamically by issuing plans and guidelines augmented with incentivisation schemes. Results: This work addresses the inherent uncertainty of the dynamic system behaviour, the local autonomous and context-aware learning of subsystems, and proactive control based on adaptiveness. We provide the ‘swarm-fleet infrastructure’—a self-organised taxi service established by autonomous, privately-owned cars—as a testbed for structured comparison of systems. Conclusion: The ‘swarm-fleet infrastructure’ supports the advantages of a proactive hybrid self-adaptive and self-organising system operation. Further, we provide a system model to combine the system-wide optimisation while ensuring local decision-making through reinforcement learning for individualised configurations.
Technologieregulierung im Mehrebenensystem – Das Gesetz über Künstliche Intelligenz. Geminn, Christian. 2022.
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What should AI know? Information disclosure in human-AI collaboration.Cvetkovic, Izabel; Oeste-Reiß, Sarah; Lehmann-Willenbrock, Nale; Bittner, Eva. In European Conference on Information Systems (ECIS). Timisoara, Romania, 2022.
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AI-assisted Design Thinking shows great potential for supporting collaborative creative work. To foster creative thinking processes within teams with individualized suggestions, AI has to rely on data provided by the teams. As a prerequisite, team members need to weigh their disclosure preferences against the potential benefits of AI when disclosing information. To shed light on these decisions, we identify relevant information such as emotional states or discussion arguments that design thinking teams could provide to AI to enjoy the benefits of its support. Using the privacy calculus as theoretical lens, we draft a research design to analyze user preferences for disclosing different information relevant to the service bundles that AI provides for respective information. We make explorative contributions to the body of knowledge in terms of AI use and its corresponding information disclosure. The findings are relevant for practice as they guide the design of AI that fosters information disclosure.
Künstliche Intelligenz als hybride Lebensform. Zur Kritik der kybernetischen Expansion.Lamla, Jörn. In Künstliche Intelligenz, Demokratie und Privatheit, M. Friedewald, A. Roßnagel, J. Heesen, N. Krämer, J. Lamla (eds.), pp. 77–100. Nomos, Baden-Baden, 2022.
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Traversing the Insider’s Path toward Equitable Research Practices for Migrants.Dankwa, Nana Kesewaa. In Interactions, 29(2), pp. 62–65. Association for Computing Machinery, New York, NY, USA, 2022.
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In this forum we explore different perspectives for how to apply intersectionality as a critical framework for design across multiple contexts. --- Yolanda A. Rankin and Jakita O. Thomas, Editors
Desinformationen und Messengerdienste: Herausforderung und Lösungsansätze.Krämer, N.; Hornung, G.; Jansen, C.; Kluck, J. P.; Rinsdorf, L.; Setz, T.; Steinebach, M.; Vogel, I.; Yannikos, Y. In Künstliche Intelligenz, Demokratie und Privatheit, M. Friedewald, A. Roßnagel, J. Heesen, N. Krämer, J. Lamla (eds.), pp. 317–349. Nomos, Baden-Baden, 2022.
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Hybrid Spaces, Hybrid Methodologies: Finding Ways of Working with Social Sciences and Humanities in Human-Computer Interaction.Draude, Claude; Klumbytė, Goda. In Human-Computer Interaction. Theoretical Approaches and Design Methods, Vol. 13302 of Lecture Notes in Computer Science, M. Kurosu (ed.), pp. 40–56. Springer International Publishing, Cham, 2022.
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Starting from the need for responsible research and innovation in computing, this paper addresses the challenges that come from working with the social sciences and the humanities in human-computer interaction. In this paper, we attempt to move beyond interdisciplinarity towards transdisciplinarity. In particular, we explore concepts of hybridity and third spaces that are used in HCI participatory design practices. We trace back the postcolonial, decolonial and feminist scholarship basis of these concepts and look at how their critical potential can inform a conceptualization of what we call hybrid methodology in its own right. For this, we present three case studies. The first two work with experimental spaces in artistic research and research through design, the third works with intersectional critical and speculative methodologies in machine learning systems design. The first two case studies center around the discussions of disciplinary openness through experimentation as a way of moving beyond interdisciplinarity towards transdisciplinarity; the third zooms in on the role of critical theoretical knowledge from the social sciences and the humanities as knowledge that enables new orientations in research and design of IT systems.
Faire Algorithmen und die Fairness von Erklärungen – Informatische, rechtliche und ethische Perspektiven. Geminn, Christian; Artelt, André; Hammer, Barbara; Manzeschke, Arne; Mavrina, Lina; Weber, Carina. Universität Duisburg-Essen, Duisburg, 2022.
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Zur Institutionalisierung einer Überwachungsgesamtrechnung.Geminn, Christian. In Die Öffentliche Verwaltung, 75(19), pp. 789–795. 2022.
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Faktoren für gelungene Studienprogramm-Reformen.Kordts, Robert; Leimeister, Jan Marco; Zenker, Christina. In Neues Handbuch Hochschullehre (NHHL), Vol. 104, B. Berendt, A. Fleischmann, N. Schaper, B. Szczyrba, M. Wiemer, J. Wildt (eds.). DUZ Verlags- und Medienhaus GmbH, 2022.
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Wie sehen gelungene Studienprogramm-Reformen an einer spezifischen Hochschule aus? Welche Faktoren sind dabei wichtig und wie kann üblichen Herausforderungen erfolgreich begegnet werden? In diesem Beitrag stellen wir die Ergebnisse der Evaluation einer Studienprogramm-Reform an der Universität St. Gallen (HSG) dar. Ausgehend vom aktuellen Stand der wissenschaftlichen Diskussion um Studienprogramm-Reformen, werden Faktoren einer gelungenen Reform aus zwei Befragungen abgeleitet, die diese Reform begleiteten.
Selbstbestimmung, Künstliche Intelligenz und Demokratie.Geminn, Christian. In Datenschutz und Datensicherheit, pp. 327–328. 2022.
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Verhaltensbeeinflussung durch Beobachtung? Eine explorative Nutzerbefragung zu den Auswirkungen verschiedener Beobachtungssituationen. Büscher, M.; Gutjahr, A.; Hornung, G.; Schindler, S.; Selzer, A.; Spiecker gen. Döhmann, I.; Stummer, S.; Wilmer, T.; Zurawski, P. Nationales Forschungszentrum für angewandte Cybersicherheit ATHENE, Darmstadt, 2022.
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Actively Controlling and Redesigning Experiments using the Application Case of Free-Electron Laser Pulse Characterization.Dingel, Kristina. In Organic Computing -- Doctoral Dissertation Colloquium 2021, S. Tomforde, C. Krupitzer (eds.), pp. 86–98. kassel university press, 2022.
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Experiments are the elective tool for developing new technologies, testing hypotheses, and designing new materials in many scientific fields. Thereby, it is state-of-the-art to create experiments traditionally, starting with a hypothesis leading to the product or relevant data after several experiment cycles. There are some techniques such as automation, parallelization, or inverse design to accelerate experiments. Particularly interesting, however, is the approach to integrate immediate data analysis into the experiment cycle. By analyzing experiment output data on-site using, e.g., neural networks, one can make inferences regarding the experiment's current settings at run-time and furthermore improve them. In the following research project, the goal is to develop and incorporate a data analysis stage into an experimental setup, which can be actively adapted and designed on-site. To demonstrate the developed method, the experimental design of a self-amplification of spontaneous emission pulse characterization experiment at a free-electron laser will be used to show to what extent the experiment can be adapted and optimized.
Entwurfsmuster für die interdisziplinäre Gestaltung rechtsverträglicher Systeme.Dickhaut, Ernestine; Thies, Laura Friederike; Janson, Andreas; Leimeister, Jan Marco; Söllner, Matthias. In Selbstbestimmung, Privatheit und Datenschutz, M. Friedewald, M. Kreutzer, M. Hansen (eds.), pp. 469–487. Springer Vieweg, Wiesbaden, 2022.
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Durch die Digitalisierung werden immer mehr Technologien entwickelt. Dabei gewinnt die soziotechnische Systementwicklung zunehmend an Bedeutung, in deren Rahmen nicht nur das technische System isoliert betrachtet wird, sondern auch der Nutzer und sein Umfeld. Insbesondere bei der Entwicklung rechtsverträglicher Systeme stehen Entwickler häufig aufgrund fehlenden rechtlichen Fachwissens vor großen Herausforderungen. Dies gilt insbesondere dann, wenn es um intelligente, selbstlernende Systeme geht. Diese Systeme sammeln, um die Qualität ihrer Dienste zu optimieren und Nutzerbedürfnissen zu entsprechen mithilfe leistungsfähiger Technologien große Mengen an personenbezogenen Daten, was Risiken für die informationelle Selbstbestimmung der Nutzer mit sich bringt. Um diesen Risiken entgegenzuwirken nutzen wir Anforderungs- und Entwurfsmuster. Ziel des Beitrags ist daher mittels eines multi-methodischen Ansatzes aufzuzeigen, welchen Beitrag interdisziplinäre Anforderungs- und Entwurfsmuster für die Entwicklung rechtsverträglicher und qualitativ hochwertiger KI-basierter Systeme leisten können. Um die Wirksamkeit der Muster zu untersuchen wurde mithilfe der Muster ein Lernassistent entwickelt und durch die Methode der Simulationsstudie evaluiert.
Discovering Locally Maximal Bipartite Subgraphs.Dürrschnabel, Dominik; Hanika, Tom; Stumme, Gerd. 2022.
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Induced bipartite subgraphs of maximal vertex cardinality are an essential concept for the analysis of graphs. Yet, discovering them in large graphs is known to be computationally hard. Therefore, we consider in this work a weaker notion of this problem, where we discard the maximality constraint in favor of inclusion maximality. Thus, we aim to discover locally maximal bipartite subgraphs. For this, we present three heuristic approaches to extract such subgraphs and compare their results to the solutions of the global problem. For the latter, we employ the algorithmic strength of fast SAT-solvers. Our three proposed heuristics are based on a greedy strategy, a simulated annealing approach, and a genetic algorithm, respectively. We evaluate all four algorithms with respect to their time requirement and the vertex cardinality of the discovered bipartite subgraphs on several benchmark datasets
Introducing Conversational Explanations as a Novel Response Strategy to Data Breach Incidents in Digital Commerce.Diesterhöft, Till Ole; Benner, Dennis; Brauer, Benjamin. In pre-ICIS Workshop on Information Security and Privacy (WISP). Copenhagen, Denmark, 2022.
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In order to individualize and personalize digital services, an increasing number of e-commerce providers are exploiting abundant amounts of customer information. Alongside these positive effects, an inherent risk of compromise of customer information arises, resulting in data breaches. Compelled by regulations, companies are obliged to notify their customers. Previous literature indicates that different data breach response strategies can mitigate the negative effects of these security incidents. Drawing on data breach and conversational agent (CA) research, we theorize that the manner in which a data breach is communicated is equally relevant. We test our developed hypotheses in an online experiment (n=89). Our results show that explaining a data breach increases customer satisfaction. Simultaneously, we reveal that CAs lend themselves as a tool to positively influence this degree of explanation. Our work provides novel insights into the centrality of explanation in a data breach response and their positive correlation with CAs.
German Standardization Roadmap on Artificial Intelligence. DIN; DKE; Dickhaut, Ernestine; Li, Mahei Manhai; Peters, Christoph; many other authors [see chapter 11]. 2nd ed., W. Wahlster; C. Winterhalter (eds.). 2022.
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On behalf of the German Federal Ministry of Economic Affairs and Climate Action, DIN and DKE started work on the second edition of the German Standardization Roadmap Artificial Intelligence in January 2022. With the broad participation and involvement of more than 570 experts from industry, science, the public sector and civil society, the strategic Roadmap for AI standardization was thus further developed. This work was coordinated and accompanied by a high-level coordination group for AI standardization and conformity The standardization roadmap implements a measure of the German government’s AI Strategy and thus makes a significant contribution to “AI – Made in Germany”. Standardization is part of the AI Strategy and is a strategic instrument for strengthening the innovation and competitiveness of the German and European economies. Not least for this reason, standardization plays a special role in the planned European legal framework for AI, the Artificial Intelligence Act. This Standardization Roadmap AI identifies the requirements in standardization, formulates concrete recommendations and thus creates the basis for initiating standardization work at national level, and especially at European and international level, at an early stage. In doing so, the Roadmap makes a significant contribution to the European Commission’s Artificial Intelligence Act, supporting its implementation. The Standardization Roadmap AI focuses on nine key topics, which are addressed in Chapter 4: → The Roadmap begins with the basic topics, such as terminologies and definitions, classifications and ethical issues. They are the basis for AI discussions and are thus the central core of the Roadmap. → The security/safety of AI systems plays a crucial role in widespread use of AI solutions. Only a more in-depth consideration of requirements for operational safety and information security, for example, can enable the comprehensive use of AI systems in business and society. → Another key topic, and the basis for the broad market success of AI, is testing and certification. This requires reliable quality criteria and reproducible test methods that can be used to verify the properties of AI systems. They are a key prerequisite for assessing the quality of AI-based applications and contribute significantly to explainability and traceability – two factors that build trust and acceptance. → Another challenge in the use of AI, especially for small and medium-sized enterprises, is the integration of AI technologies in organizations. The focus here is on sociotechnical aspects such as human-technology interaction, humane work design, and requirements for business structures and processes, which are all examined in the Roadmap. → The fields of application of AI are extremely diverse. AI technologies are used in almost all business and application areas and offer great potential. To cover a broad spectrum of applications, the Roadmap considers industry-specific challenges for the following five sectors in particular, in addition to the cross-cutting issues mentioned above: Industrial Automation, Mobility, Medicine, Financial Services and Energy / Environment. The present Roadmap outlines the work and discussion results for all nine key topics and provides a comprehensive overview of the status quo, requirements, and needs for action.
FCA2VEC: Embedding Techniques for Formal Concept Analysis.Dürrschnabel, Dominik; Hanika, Tom; Stubbemann, Maximilian. In Complex Data Analytics with Formal Concept Analysis, R. Missaoui, L. Kwuida, T. Abdessalem (eds.), pp. 47–74. Springer International Publishing, 2022.
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Development of a Passenger Assistance System to Increase the Attractiveness of Local Public Transport.Faulhaber, A. K.; Hegenberg, J.; Kahnt, S. E.; Lambrecht, F.; Leonhäuser, D.; Saake, S.; Wehr, F.; Schmidt, L.; Sommer, C. In Sustainability, 14(7), pp. 1–17 (4151). 2022.
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In this paper, we present a concept for an assistance system for public transport passengers currently being developed for Kassel, Germany, and its surrounding area. The assistance system aims at increasing the attractiveness of local public transport by reducing barriers to use, thus promoting sustainable travel behavior. Three main barriers were identified: crowded vehicles, missed connections, and inconveniences in the transportation of shopping bags and luggage. To tackle these issues, three assistance system services were conceptualized: the occupancy rate informing passengers about the occupancy level of vehicles, the transfer connection monitor and secure system giving passengers the option to communicate transfer connection requests, and the delivery service allowing the use of public transport while shopping without the need to transport purchased goods. The three services are presented in detail along with the user interfaces they will be integrated into. Moreover, for the further implementation of the assistance system, a user requirement analysis is outlined. We finally give an overview and outlook regarding the implementation and evaluation of the concept in laboratory studies and a one-year field study.
Artificial intelligence for online characterization of ultrashort X‑ray free‑electron laser pulses.Dingel, Kristina; Otto, Thorsten; Marder, Lutz; Funke, Lars; Held, Arne; Savio, Sara; Hans, Andreas; Hartmann, Gregor; Meier, David; Viefhaus, Jens; Sick, Bernhard; Ehresmann, Arno; Ilchen, Markus; Helml, Wolfram. In Scientific Reports, 12(1), pp. 1–14. Nature Publishing Group, 2022.
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X-ray free-electron lasers (XFELs) as the world’s brightest light sources provide ultrashort X-ray pulses with a duration typically in the order of femtoseconds. Recently, they have approached and entered the attosecond regime, which holds new promises for single-molecule imaging and studying nonlinear and ultrafast phenomena such as localized electron dynamics. The technological evolution of XFELs toward well-controllable light sources for precise metrology of ultrafast processes has been, however, hampered by the diagnostic capabilities for characterizing X-ray pulses at the attosecond frontier. In this regard, the spectroscopic technique of photoelectron angular streaking has successfully proven how to non-destructively retrieve the exact time–energy structure of XFEL pulses on a single-shot basis. By using artificial intelligence techniques, in particular convolutional neural networks, we here show how this technique can be leveraged from its proof-of-principle stage toward routine diagnostics even at high-repetition-rate XFELs, thus enhancing and refining their scientific accessibility in all related disciplines.
USA: Connecticut – Act Concerning Personal Data Privacy and Online Monitoring.Geminn, Christian. In ZD-Aktuell, p. 01191. 2022.
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Datenintermediäre als Fairness-Akteure in der Datenökonomie.Kropf, Jonathan; Lamla, Jörn; Uhlmann, Markus. In Zu treuen Händen? Verbraucherdatenschutz und digitale Selbstbestimmung. Verbraucherzentrale NRW e.V., 2022.
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Zahlungsdaten im europäischen Datenwirtschaftsrecht.Geminn, Christian. In Recht der Zahlungsdienste, pp. 148–155. 2022.
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Limiting State Surveillance by Means of Constitutional Law: Potentials and Limitations. Geminn, Christian. 15th International Conference on Computers, Privacy & Data Protection, Brüssel, 2022.
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Evaluation of Priority-Dependent Notifications for Smart Glasses Based on Peripheral Visual Cues.Faulhaber, A. K.; Hoppe, M.; Schmidt, L. In i-com - Zeitschrift für interaktive und kooperative Medien, 21(2), pp. 239–252. 2022.
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Smart glasses are increasingly commercialized and may replace or at least complement smartphones someday. Common smartphone features, such as notifications, should then also be available for smart glasses. However, notifications are of disruptive character given that even unimportant notifications frequently interrupt users performing a primary task. This often leads to distractions and performance degradation. Thus, we propose a concept for displaying notifications in the peripheral field of view of smart glasses and with different visualizations depending on the priority of the notification. We developed three icon-based notifications representing increasing priority: a transparent green icon continuously becoming more opaque (low priority), a yellow icon moving up and down (medium priority), and a red and yellow flashing icon (high priority). To evaluate the concept, we conducted a study with 24 participants who performed a primary task and should react to notifications at the same time using the Nreal Light smart glasses. The results showed that reaction times for the low-priority notification were significantly higher and it was ranked as the least distracting. The medium- and high-priority notifications did not show a clear difference in noticeability, distraction, or workload. We discuss implications of our results for the perception and visualization of notifications in the peripheral field of view of smart glasses and, more generally, for augmented reality applications.
Mapping Data Justice as a Multidimensional Concept Through Feminist and Legal Perspectives.Draude, Claude; Hornung, Gerrit; Klumbytė, Goda. In New Perspectives in Critical Data Studies: The Ambivalences of Data Power, A. Hepp, J. Jarke, L. Kramp (eds.), pp. 187–216. Springer International Publishing, Cham, 2022.
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This chapter interrogates ``data justice'' through the lenses of feminist and legal studies to reconfigure data justice as a multidimensional, interdisciplinary practice in IT-design. First, we look at how data justice is framed in feminist research and feminist-informed critical data and design perspectives, as well as how it is conceptualised in law, particularly in the context of the European General Data Protection Regulation (GDPR) and legal debates around privacy in Europe. Second, we recommend conceptual shifts, design approaches, and legal measures towards data justice. Our chapter contributes to new perspectives in critical data studies by showing that data justice can provide a conceptual ground that serves both the needs of legal formalisation as well as feminist imperatives of contextualisation and specificity.
Natural Language Processing (NLP) und der Datenschutz - Chancen und Risiken für den Schutz der Privatheit.Choi, J.-E.; Setz, T.; Steinebach, M.; Vogel, I. In INFORMATIK 2022, D. Demmler, D. Krupka, H. Federrath (eds.), pp. 651–664. Gesellschaft für Informatik, Bonn, 2022.
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Attribute Exploration with Multiple Contradicting Partial Experts.Felde, Maximilian; Stumme, Gerd. In Graph-Based Representation and Reasoning, T. Braun, D. Cristea, R. Jäschke (eds.), pp. 51–65. Springer International Publishing, Cham, 2022.
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Attribute exploration is a method from Formal Concept Analysis (FCA) that helps a domain expert discover structural dependencies in knowledge domains which can be represented as formal contexts (cross tables of objects and attributes). In this paper we present an extension of attribute exploration that allows for a group of domain experts and explores their shared views. Each expert has their own view of the domain and the views of multiple experts may contain contradicting information.
Social Machines.Draude, Claude; Gruhl, Christian; Hornung, Gerrit; Kropf, Jonathan; Lamla, Jörn; Leimeister, Jan Marco; Sick, Bernhard; Stumme, Gerd. In Informatik Spektrum, 45(1), pp. 38–42. Springer, 2022.
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Social Machines sind ein Paradigma für die Gestaltung soziotechnischer Systeme, die unter Verwendung von Web- und Plattformlösungen das Potenzial digitaler Technologien mit der Eigenlogik sozialer Interaktion, Organisation und Struk- turbildung auf neue Weise zusammenführen. Im Folgenden diskutieren wir das Paradigma der Social Machine aus den Perspektiven der Informatik, der Wirtschaftsinformatik, der Soziologie und des Rechts, um Orientierungspunkte für seine Gestaltung zu identifizieren. Der Begriff ist in der Literatur jedoch bisher nicht abschließend definiert sondern nur durch Beispiele illustriert. In diesem Artikel stellen wir zunächst die folgende Definition zur Diskussion: Social Machines sind soziotechnische Sys- teme, in denen die Prozesse sozialer Interaktion hybrid zwischen menschlichen und maschinellen Akteuren ablaufen und teilweise algorithmisiert sind. Im Anschluss beleuchten wir drei aktuelle, sich gegenseitig bedingende Entwicklungen von Social Machines: die immer stärkere Verschmelzung von Sozialität und Maschine, die Vermessung von Nutzeraktivitäten als Grundstoff gesellschaftlichen Zusammenhalts und die zunehmende Algorithmisierung gesellschaftlicher Prozesse. Ab- schließend diskutieren wir, dass eine teilhabeorientierte, demokratischen Werten folgende Gestaltung von Social Machines die Perspektiven der Nutzungsakzeptanz, der gesellschaftlichen Akzeptabilität und der nachhaltigen Wirtschaftlichkeit adressieren und umsetzen muss.
Convergences.Braidotti, Rosi; Jones, Emily; Klumbytė, Goda. In More Posthuman Glossary, R. Braidotti, E. Jones, G. Klumbytė (eds.), pp. 21–22. Bloomsbury Publishing, 2022.
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Critical Tools for Machine Learning: Working with Intersectional Critical Concepts in Machine Learning Systems Design.Klumbytė, Goda; Draude, Claude; Taylor, Alex S. In 2022 ACM Conference on Fairness, Accountability, and Transparency, of FAccT ’22, pp. 1528–1541. Association for Computing Machinery, New York, NY, USA, 2022.
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This paper investigates how intersectional critical theoretical concepts from social sciences and humanities research can be worked with in machine learning systems design. It does so by presenting a case study of a series of speculative design workshops, conducted in 2021. These workshops drew on intersectional feminist methodologies to construct interdisciplinary interventions in the design of machine learning systems, towards more inclusive, accountable, and contextualized systems design. The concepts of “situating/situated knowledges”, "figuration", "diffraction", and “critical fabulation/speculation” were taken up as theoretical and methodological tools for concept-led design workshops. This paper presents the design framework of the workshops and highlights tensions and possibilities with regards to interdisciplinary machine learning systems design towards more inclusive, contextualized, and accountable systems. It discusses the role that critical theoretical concepts can play in a design process and shows how such concepts can work as methodological tools that nonetheless require an open-ended experimental space to function. It presents insights and discussion points regarding what it means to work with critical intersectional knowledge that is inextricably connected to its historical and socio-political roots, and how this reframes what it might mean to design fair and accountable systems.
Design of Explainability Module with Experts in the Loop for Visualization and Dynamic Adjustment of Continual Learning.He, Yujiang; Huang, Zhixin; Sick, Bernhard. In Workshop on Interactive Machine Learning Workshop (IMLW), AAAI, pp. 1–6. 2022.
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Continual learning can enable neural networks to evolve by learning new tasks sequentially in task-changing scenarios. However, two general challenges should be overcome in further research before we apply this technique to real-world applications. Firstly, newly collected novelties from the data stream in applications could contain anomalies that are meaningless for continual learning. Instead of viewing them as a new task for updating, we have to filter out such anomalies to reduce the disturbance of extremely high-entropy data for the progression of convergence. Secondly, fewer efforts have been put into research regarding the explainability of continual learning, which leads to a lack of transparency and credibility of the updated neural networks. Elaborated explanations about the process and result of continual learning can help experts in judgment and making decisions. Therefore, we propose the conceptual design of an explainability module with experts in the loop based on techniques, such as dimension reduction, visualization, and evaluation strategies. This work aims to overcome the mentioned challenges by sufficiently explaining and visualizing the identified anomalies and the updated neural network. With the help of this module, experts can be more confident in decision-making regarding anomaly filtering, dynamic adjustment of hyperparameters, data backup, etc.
Weisfeiler-Lehman goes Dynamic: An Analysis of the Expressive Power of Graph Neural Networks for Attributed and Dynamic Graphs.Beddar-Wiesing, Silvia; D’Inverno, Giuseppe Alessio; Graziani, Caterina; Lachi, Veronica; Moallemy-Oureh, Alice; Scarselli, Franco; Thomas, Josephine. In arXiv e-prints, p. arXiv:2210.03990. 2022.
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Graph Neural Networks (GNNs) are a large class of relational models for graph processing. Recent theoretical studies on the expressive power of GNNs have focused on two issues. On the one hand, it has been proven that GNNs are as powerful as the Weisfeiler-Lehman test (1-WL) in their ability to distinguish graphs. Moreover, it has been shown that the equivalence enforced by 1-WL equals unfolding equivalence. On the other hand, GNNs turned out to be universal approximators on graphs modulo the constraints enforced by 1-WL/unfolding equivalence. However, these results only apply to Static Undirected Homogeneous Graphs with node attributes. In contrast, real-life applications often involve a variety of graph properties, such as, e.g., dynamics or node and edge attributes. In this paper, we conduct a theoretical analysis of the expressive power of GNNs for these two graph types that are particularly of interest. Dynamic graphs are widely used in modern applications, and its theoretical analysis requires new approaches. The attributed type acts as a standard form for all graph types since it has been shown that all graph types can be transformed without loss to Static Undirected Homogeneous Graphs with attributes on nodes and edges (SAUHG). The study considers generic GNN models and proposes appropriate 1-WL tests for those domains. Then, the results on the expressive power of GNNs are extended by proving that GNNs have the same capability as the 1-WL test in distinguishing dynamic and attributed graphs, the 1-WL equivalence equals unfolding equivalence and that GNNs are universal approximators modulo 1-WL/unfolding equivalence. Moreover, the proof of the approximation capability holds for SAUHGs, which include most of those used in practical applications, and it is constructive in nature allowing to deduce hints on the architecture of GNNs that can achieve the desired accuracy.
On the Extension of the Weisfeiler-Lehman Hierarchy by WL Tests for Arbitrary Graphs.Beddar-Wiesing, Silvia; D’Inverno, Giuseppe Alessio; Graziani, Caterina; Lachi, Veronica; Moallemy-Oureh, Alice; Scarselli, Franco. In Workshp on Mining and Learning on Graphs (MLG), ECML PKDD, pp. 1–13. 2022.
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Graph isomorphism (GI) has occupied both theoreticians and applied scientists since the early 1950s. Over the years, several approaches and algorithms with which an isomorphism between two graphs can be tested have been developed. A general approach is the Weisfeiler–Lehman (WL) test, which is based on a coloring algorithm and provides a necessary criterion for graph isomorphism. However, the WL test is restricted to examining graphs with only node attributes. Therefore, this paper presents two extensions of the WL algorithm to allow for testing on arbitrary graphs. One considers edge attributes, and the other tests the isomorphism on dynamic graphs. Additionally, we extend the WL-hierarchy by the attributed and dynamic WL tests and show that it is a partial order, which induces a lattice. In the future, this may allow for practical implications coming from lattice theory.
Student Research Abstract: Using Local Activity Encoding for Dynamic Graph Pooling in Stuctural-Dynamic Graphs.Beddar-Wiesing, Silvia. In ACM/SIGAPP Symposium on Applied Computing (SAC), pp. 604–609. ACM, 2022.
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Graphs have recently become more popular for modeling real-world as well as theoretical problems, and several Machine Learning algorithms for learning on them have developed. For graphs that change over time, however, research is still at an early stage. This article proposes a framework DynHeatmaP that generates a constant-size graph sequence representation of graphs whose structure changes over time (structural-dynamic, SDG) in linear time. The framework uses a representation of additions and deletions of nodes and edges (events) to perform dynamic graph pooling. Our algorithm translates the dynamic changes of the nodes and edges to a heatmap representation of the current node activity, regarding additions and deletions in the neighborhood, respectively. The created activity heatmap is utilized as probabilities of the nodes to be sampled in the subsequent pooling step. In addition, the neighborhood of selected nodes has been sampled such that the ratio of additions and deletions is represented accordingly. The obtained downsampled graph sequence can then be used representatively as input to a GNN for learning on the original stream. Focussing on the active regions in a graph, the fast pooling process can reduce the training time significantly and addresses the problem of unbalanced datasets in real-world applications modeled as sparse graphs.
When thinking about work makes employees reach for their devices: A longitudinal autoregressive diary study.Heissler, Clara; Kern, Marcel; Ohly, Sandra. In Journal of Business and Psychology. 2022.
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Intraview: Speculative Materialities, Indigenous Worldings and Decolonial Futures in Computing & Design.Klumbytė, Goda; Britton, Ren Loren; Laiti, Outi; Prado de O. Martins, Luiza; Snelting, Femke; Ward, Caroline. In Matter: Journal of New Materialist Research, 3(1), pp. 182–196. 2022.
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Theorizing a Service Structure - A Hypergraph-based Modeling Approach and Applications. Li, Mahei Manhai. 2022.
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Detecting Corner Case in the Context of Highly Automated Driving.Heidecker, Florian. In Organic Computing -- Doctoral Dissertation Colloquium 2021, S. Tomforde, C. Krupitzer (eds.), pp. 60–73. kassel university press, 2022.
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This article introduces a research proposal that aims to deﬁne, detect, and evaluate corner cases in the context of machine learning (ML) systems and highly automated driving. Corner cases are scenarios or data in a dataset that are recorded only very rarely and therefore only available in small quantities or not at all in the dataset. However, corner cases are very important for model training, as they are needed to improve the model performance in these rare scenarios. On the other hand, in safety- and security-critical applications, such as highly automated driving, corner case data is extremely important for testing and verifying the ML system. The research proposal addresses these challenges and focuses on the deﬁnition and categorization of corner cases. Based on this, ML methods for corner case detection are developed, focusing on object detection for automated driving and trajectory data for intention detection of pedestrians and cyclists. Finally, the research proposal addresses corner case metrics and the evaluation of the developed detection models.
Prospects for a New Materialist Informatics: Introduction to a Special Issue.Klumbytė, Goda; Draude, Claude. In Matter: Journal of New Materialist Research, 3(1), p. I-XIV. 2022.
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Prospects for a New Materialist Informatics. Klumbytė, Goda; Draude, Claude. In Vol. 3. 2022.
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New Materialist Informatics.Klumbytė, Goda; Draude, Claude. In More Posthuman Glossary, R. Braidotti, E. Jones, G. Klumbytė (eds.), pp. 85–87. Bloomsbury Publishing, 2022.
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Handlungsbroschüre. Systematisches Design digitaler Privacy Nudges – Handlungsempfehlungen zur Gestaltung von digitalen Privacy Nudges. Technical Report (12), . Barev, Torben Jan; Dickhaut, Ernestine; Schomberg, Sabrina; Janson, Andreas; Schöbel, Sofia; Grote, Thomas; Hornung, Gerrit; Leimeister, Jan Marco. Kassel University Press, Kassel, 2022.
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Digitale Arbeitsumgebungen sind heutzutage allgegenwärtig. Zugleich hat die Anzahl an Möglichkeiten, Informationen über Arbeitstätigkeiten sowie sensible persönliche Daten elektronisch zu erfassen, drastisch zugenommen (Backhaus 2019). Unternehmen nutzen immer mehr Formen von digitalen Arbeitssystemen und setzen fortschrittliche Instrumente wie Big Data Analytik oder Künstliche Intelligenz ein. Damit können Daten schneller und in größerem Umfang als je zuvor gesammelt, aggregiert und analysiert werden (Malhotra et al. 2004). Darüber hinaus können Daten gesammelt werden, ohne dass der Einzelne davon weiß (Bélanger and Crossler 2011). Auf der einen Seite birgt die weit verbreitete Analyse von persönlichen Daten ein erhebliches Innovationspotenzial, einen wirtschaftlichen Wert sowie effizientere Arbeitsmodelle (Erevelles et al. 2016). Auf der anderen Seite ist die Anfälligkeit für Diskriminierung, kommerzielle Ausbeutung und unerwünschte Überwachung ebenso allgegenwärtig. Dadurch wird die Akzeptanz moderner IT‐Systeme behindert. Dieser Interessenkonflikt wird sich in den kommenden Jahren vermutlich noch verschärfen, da die Unternehmen von der fortschreitenden Digitalisierung profitieren.
Datenschutz: Europäische und nationale Vorgaben.Hornung, G.; Schindler, S. In Europäische Staatsanwaltschaft. Handbuch., H.-H. Herrnfeld, R. Esser (eds.), pp. 323–344. Nomos Verlagsgesellschaft, Baden-Baden, 2022.
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ICT-enabled job crafting: How Business Unit Developers use Low-code Development Platforms to craft jobs.Li, Mahei Manhai; Peters, Christoph; Poser, Mathis; Eilers, Karen; Elshan, Edona. In International Conference on Information Systems (ICIS). Copenhagen, Denmark, 2022.
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Recently, businesses are introducing low-code development platforms (LCDP) that enable employees with little to no development expertise to develop their own systems to improve their work. These so-called business unit developers (BUDs) possess necessary domain knowledge to understand how to use LCDPs to create useful (self-) services. Using job resource demand theory and the job crafting model, we conceptualize that BUDs use of LCDPs can be framed using the theoretical lens of job crafting. Job crafting stems from vocational psychology and provides well-researched positive consequences, such as wellbeing and meaningfulness. Thus, our research objective is to understand how BUDs can use LCDPs to job craft to gain access to positive job crafting consequences. We interviewed 17 experts across three organizations that employ an LDCP for chatbots. Our results suggest that job crafting is a suitable framework for understanding the effects of LCDP use.
Kollaboration im Datenschutz. Collaboration Engineering als Instrument zur partizipativen und nachhaltigen Gestaltung von Datenschutzprozessen.Hornung, G.; Söllner, M.; Stroscher, J.-P.; Zahn, E.-M. In DuD, pp. 384–389. 2022.
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KI-Regulierung im Mehrebenensystem. Der KI-Verordnungsentwurf und regulatorische Perspektiven der Mitgliedstaaten.Hornung, Gerrit. In Datenschutz und Datensicherheit, pp. 561–566. 2022.
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Collision Avoidance for Vulnerable Road Users: Privacy versus Survival?Bachmann, M.; Acosta, L. H.; Götz, J.; Reinhardt, D.; David, K. In 5th International Workshop on Intelligent Transportation and Autonomous Vehicles Technologies (ITAVT 2022) in conjunction with IEEE/IFIP Network Operations and Management Symposium (NOMS 2022), pp. 1–6. 2022.
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Marktübersicht zu Schulungen Datenschutzbeauftragter.Johannes, Paul C. In ZD-Aktuell, p. 01115. 2022.
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Adaptive Explainable Continual Learning Framework for Regression Problems with Focus on Power Forecasts.He, Yujiang. In Organic Computing -- Doctoral Dissertation Colloquium 2021, S. Tomforde, C. Krupitzer (eds.), pp. 125–140. kassel university press, 2022.
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Compared with traditional deep learning techniques, continual learning enables deep neural networks to learn continually and adaptively. Deep neural networks have to learn unseen tasks and overcome forgetting the knowledge obtained from previously learned tasks as the amount of data keeps increasing in applications. This article proposes two continual learning application scenarios, i.e., the target-domain incremental scenario and the data-domain incremental scenario, to describe the potential challenges in this context. Based on our previous work regarding the CLeaR framework, which is short for continual learning for regression tasks, models will be enabled to extend themselves and to learn data successively. Research topics are related, but not limited, to developing continual deep learning algorithms, strategies for non-stationarity detection in data streams, explainable and visualizable artificial intelligence, etc. Moreover, the framework- and algorithm-related hyperparameters should be dynamically updated in applications. Forecasting experiments will be conducted based on power generation and consumption data collected from real-world applications. A series of comprehensive evaluation metrics and visualization tools are applied to access the experimental results. The proposed framework is expected to be generally applied to other constantly changing scenarios.
Einwilligung und Belehrung im Polizeidatenschutz.Johannes, Paul C. In Daten, Plattformen und KI als Dreiklang unserer Zeit, Vol. Tagungsband DSRI-Herbstakademie, C. Heinze (ed.), pp. 213–228. 2022.
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Self-Adaptive Charging Management in Electric Vehicle Infrastructures based on Reinforcement Learning.Hassouna, Mohamed. In Organic Computing -- Doctoral Dissertation Colloquium 2022, S. Tomforde, C. Krupitzer (eds.), pp. 1–16. kassel university press, 2022.
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Electromobility plays an increasingly important role in the energy transition. Electric vehicle charging poses challenges to the electricity grid due to high peak demand situations. Therefore, it is crucial to leverage the vehicle's flexibility when charging can be delayed. Conventional charging management systems cannot adapt to frequently changing conditions such as fluctuating renewable energy output, electricity prices and user behavior. In this article, we investigate the application of reinforcement learning approaches for self-adaptive charging management. In particular, we identify challenges regarding realistic environments and adaption to varying topologies and connections among charging stations. We describe related approaches and propose ideas and planned experiments to overcome these problems by utilizing generative models and graph neural networks.
Datenschutz und Datensicherheit in China Überblick zu PIPL und DSL.Johannes, Paul C. In Zeitschrift für Datenschutz, pp. 90–98. 2022.
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Europäisches Datenrecht – ein Spickzettel.Johannes, Paul C. In ZD-Aktuell, p. 01166. 2022.
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Datensouveränität im Spannungsfeld zwischen Datenschutz und Datennutzung: das Beispiel des Data Governance Acts.Hornung, Gerrit; Schomberg, Sabrina. In Computer und Recht, pp. 508–516. 2022.
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Kollaboration im Datenschutz. Datenschutz und Datensicherheit.Hornung, Gerrit; Söllner, Matthias; Stroscher, Jan-Philipp; Zahn, Eva-Maria. In Datenschutz und Datensicherheit - DuD, 46(6), pp. 384–389. 2022.
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Die DSGVO enthält sehr unterschiedliche Vorgaben zur Zusammenarbeit verschiedener Akteure, aber kein systematisches Modell für die Ausgestaltung dieser Formen der Zusammenarbeit. Gerade für KMU könnten standardisierte Verfahren ein Ansatz zur effizienten Umsetzung sein. Der Beitrag untersucht die Frage, an welchen Stellen Ansätze des Collaboration Engineering Zusammenarbeitsprozesse ermöglichen würden, die die gesetzlichen Vorgaben mit Leben füllen.
Almanac: Algorithmic Kinning.Klumbytė, Goda. In Matter: Journal of New Materialist Research, 3(1), pp. 160–164. 2022.
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§§ 33a, 67-68c, 75b-75c, 139e, 284-333, 371-399.Hornung, G. In Sozialgesetzbuch V: Gesetzliche Krankenversicherung. Lehr- und Praxiskommentar, 6th ed., A. Hänlein, R. Schuler (eds.), p. 345 Seiten. Nomos Verlagsgesellschaft, Baden-Baden, 2022.
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TTDSG – ein Überblick mit Keksbeilage.Johannes, Paul C. In LRZ. 2022.
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Umfang der Auskunftspflicht des Betreibers einer Social Media-Plattform nach § 21 II 2 TTDSG gegenüber einer minderjährigen Nutzerin, Anmerkung zu OLG Schleswig, Beschl. v. 23.3.2022 – 9 Wx 23/21.Lorenz, L. In Neue Zeitschrift für Familienrecht 2022, (524). 2022.
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Patientendatenschutz: Behandlungsvertragliche Nebenpflicht eines Arztes, für eine ordnungsgemäße Datenverarbeitung Sorge zu tragen, Anmerkung zu LG Flensburg, Urteil vom 19.11.2021 – 3 O 227/19.Lorenz, L. In Gesundheit und Pflege, pp. 115–117. 2022.
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Zur Rechtskonformität des Erfordernisses eines Lichtbildes für die eGK unter besonderer Berücksichtigung des Rechts auf informationelle Selbstbestimmung sowie der Vorgaben der DSGVO – Teil I.Lorenz, L. In Zeitschrift für Medizinrecht, 2022, pp. 902–907. 2022.
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Selbstverantwortung und Selbstregulierung nach der Datenschutz-Grundverordnung. Bile, Tamer. A. Roßnagel (ed.). Universität Kassel, 2022.
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Rethinking business models as sociotechnical intersections in data-economy that should be designed participatively.Horn, Viktoria; Engert, Simon; Draude, Claude. In Mensch und Computer 2022 - Workshopband, K. Marky, U. Grünefeld, T. Kosch (eds.). Gesellschaft für Informatik e.V., Bonn, 2022.
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Zur Einführung einer Überwachungs-Gesamtrechnung.Bile, Tamer; Friedewald, M.; Roßnagel, Alexander; Geminn, Christian; Karaboga, M.; Hansen, M.; Bieker, F. In Datenschutz und Datensicherheit, pp. 572–577. 2022.
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Data Analytics for Effective Decision-Making in Crises - Identifying Relevant Data Analytics Competencies for Automotive Procurement Departments.Klee, Sven; Janson, Andreas. In International Conference on Information Systems (ICIS). Copenhagen, Denmark, 2022.
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Crises become the norm for organizations, as recent years have shown. Especially the automotive industry is still facing disruptive changes such as e-mobility, connected cars or autonomous driving. Disrupted supply chains, related production downtimes and associated financial losses are consequences. Procurement departments are the interface between internal and external stakeholders in supply chains, and therefore, the central authority for managing crises. In such situations, effective decision-making is essential. Positive effects of data analytics on decision-making were part of numerous research endeavors, as well as related data analytics competencies. We conducted semi-structured interviews with experienced experts about relevant data analytics competencies in procurement departments. We present an overview specifically for procurement departments and derive implications of these competencies on decision-making. As a result, we apply our findings to existing research from a theoretical perspective and support procurement leaders and their departments in facing current and future challenges from a practical perspective.
Künstliche Intelligenz zur Auswertung von Social Media Massendaten. Möglichkeiten und rechtliche Grenzen des Einsatzes KI-basierter Analysetools durch Sicherheitsbehörden.Hornung, G. In Archiv des öffentlichen Rechts, (147), pp. 1–69. 2022.
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Trainingsdaten und die Rechte von betroffenen Personen – in der DSGVO und darüber hinaus?Hornung, G. In Künstliche Intelligenz. Wie gelingt eine vertrauenswürdige Verwendung in Deutschland und Europa?, pp. 91–120. Mohr Siebeck, Tübingen, 2022.
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Vocational Training with Microlearning - How Low-Immersive 360-Degree Learning Environments Support Work-Process-Integrated Learning.Billert, Matthias Simon; Weinert, Tim; Thiel de Gafenco, Marian; Janson, Andreas; Klusmeyer, Jens; Leimeister, Jan Marco. In IEEE Transactions on Learning Technologies, 15(5), pp. 540–553. 2022.
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In-company training is facing new challenges in preparing employees for the demands of digitalized and automated manufacturing. New training concepts like microlearning are necessary to support work-process-related learning. To handle the limitations of microlearning, we develop a 360-degree learning system to demonstrate a realistic work environment. Nonetheless, there is a lack of design knowledge supporting the motivation and performance of employees using the system. Based on a systematic literature review and semi-structured interviews, we have developed design requirements for interactive 360-degree learning environments. We used a workshop-based mixed-method approach with interviews, concept maps, and video analysis to evaluate the motivation and performance of precision mechanics within a prototypical work-process-oriented learning environment in an inter-company vocational training center. The results show a positive effect on learning outcomes and motivation. In addition, the ease of use and sense of presence while using the learning environment are rated as high. We contribute to theory by shedding new light on learners' motivation and performance within work-process-oriented interactive 360-degree learning environments. Furthermore, we offer guidelines for developing such interactive 360-degree learning environments.
Zur Rechtskonformität des Erfordernisses eines Lichtbildes für die eGK unter besonderer Berücksichtigung des Rechts auf informationelle Selbstbestimmung sowie der Vorgaben der DSGVO – Teil II.Lorenz, L. In Zeitschrift für Medizinrecht, 2022, pp. 1000–1005. 2022.
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Anspruch auf Haushaltshilfe – Trägerschaft und Beschaffungsweg als (rechtliche) Fallstricke, Anmerkung zu LSG Hessen, Urteil vom 22. Juni 2021 – L 2 R 360/18.Lorenz, L. In reha-recht.de, (Beitrag A7-2022). 2022.
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Welcome back, QR-Code! – Teil II.Lorenz, L. In Zeitschrift zum Innovations- und Technikrecht 2022, pp. 16–22. 2022.
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Neukommentierung von § 35a.Hornung, G. In Verwaltungsrecht. VwVfG, Loseblatt (40 Seiten), Vol. 3, F. Schoch, J.-P. Schneider (eds.). C.H.Beck, München, 2022.
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The Vision of Self-Management in Cognitive Organic Power Distribution Systems.Loeser, Inga; Braun, Martin; Gruhl, Christian; Menke, Jan-Hendrik; Sick, Bernhard; Tomforde, Sven. In Energies, 15(3), p. 881. MDPI, 2022.
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Due to the ongoing trend towards a decarbonisation of energy use, the power system is expected to become the backbone of all energy sectors and thus the fundamental critical infrastructure. High penetration with distributed energy resources demands the coordination of a large number of prosumers, partly controlled by home energy management systems (HEMS), to be designed in such a way that the power system’s operational limits are not violated. On the grid level, distribution management systems (DMS) seek to keep the power system in the normal operational state. On the prosumer level, distributed HEMS optimise the internal power flows by setpoint specification of batteries, photovoltaic generators, or flexible loads. The vision of the ODiS (Organic Distribution System) initiative is to develop an architecture to operate a distribution grid reliably, with high resiliency, and fully autonomously by developing “organic” HEMS and DMS which possess multiple self-x capabilities, collectively referred to as self-management. Thus, ODiS seeks answers to the following question: How can we create the most appropriate models, techniques, and algorithms to develop novel kinds of self-configuring, self-organising, self-healing, and self-optimising DMS that are integrally coupled with the distributed HEMS? In this concept paper, the vision of ODiS is presented in detail based on a thorough review of the state of the art.
Der Forschungsdatenzugang nach dem neuen Art. 40 Digital Services Act.Löber, Lena. In ZD-Aktuell, p. 01420. 2022.
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Auf dem Weg zu einem Beschäftigtendatenschutzgesetz für das digitale Zeitalter?Löber, Lena. In ZD-Aktuell, p. 01120. 2022.
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Big Data - Big Accountability. Erkennung von Versicherungsbetrug mit Big Data nach der Datenschutz-Grundverordnung. Herfurth, Constantin. In of DuD-Fachbeiträge. Springer Vieweg Wiesbaden, 2022.
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KI-Lösungen gegen digitale Desinformation: Rechtspflichten und -befugnisse der Anbieter von Social Networks.Löber, Lena. In Künstliche Intelligenz, Demokratie und Privatheit, M. Friedewald, A. Roßnagel, J. Heesen, N. Krämer, J. Lamla (eds.), pp. 289–316. Nomos, Baden-Baden, 2022.
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A Concept for Automated Polarized Web Content Annotation based on Multimodal Active Learning.Herde, Marek; Huseljic, Denis; Mitrovic, Jelena; Granitzer, Michael; Sick, Bernhard. In Workshop on Interactive Adaptive Learning (IAL), ECML PKDD, pp. 1–6. 2022.
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Active learning (AL) techniques hardly cope with complex annotations tasks, where, for example, annotations might express relationships across data modalities. As a use case, we consider the task of automatically detecting and reporting multimodal, polarized web content (PWC). Samples of this content type emerge dynamically, covering a broad spectrum of topics. Thus, training machine learning systems for detecting PWC is challenging, particularly if it needs to be done with minimum annotation cost. In this article, we propose the concept of multimodal AL for complex annotations in the context of PWC detection and formulate the resulting challenges as questions for future research.
Fast Bayesian Updates for Deep Learning with a Use Case in Active Learning.Herde, Marek; Huang, Zhixin; Huseljic, Denis; Kottke, Daniel; Vogt, Stephan; Sick, Bernhard. In arXiv e-prints, p. arXiv:2210.06112. 2022.
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Retraining deep neural networks when new data arrives is typically computationally expensive. Moreover, certain applications do not allow such costly retraining due to time or computational constraints. Fast Bayesian updates are a possible solution to this issue. Therefore, we propose a Bayesian update based on Monte-Carlo samples and a last-layer Laplace approximation for different Bayesian neural network types, i.e., Dropout, Ensemble, and Spectral Normalized Neural Gaussian Process (SNGP). In a large-scale evaluation study, we show that our updates combined with SNGP represent a fast and competitive alternative to costly retraining. As a use case, we combine the Bayesian updates for SNGP with different sequential query strategies to exemplarily demonstrate their improved selection performance in active learning.
Level-Up your Learning - Introducing a Framework for Gamified Educational Conversational Agents.Benner, Dennis; Schöbel, Sofia; Süess, Christoph; Baechle, Vera; Janson, Andreas. In International Conference on Wirtschaftsinformatik (WI). 2022.
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Driven by circumstances like the global pandemic many learners and educators realize the importance and value of self-regulated digital learning. To better support self-regulated learning, conversational agents have become more relevant. Conversational agents can act as tutor or as learning mate for learners. Although conversational agents have potential to better support self-regulated learning processes, challenges exist requiring implications about how to make these interactions more engaging and supportive. This study discusses the value of gamified conversational learning chatbots that use game elements to engage learners to guide researchers and practitioners to design conversational agents that effectively motivate learners and provide self-regulated learning at the same time. Therefore, we propose a systematically developed framework for gamifying educational conversational agents and contribute to theory by consolidating several theories about games, digital learning, and conversational agents and support practitioners by providing implications about what to care about when gamifying conversational agents.
Towards Gamified Conversational Agents for Self-Regulated Learning in Digital Education.Benner, Dennis; Schöbel, Sofia; Sueess, Christoph. In International Conference on Information Systems (ICIS). Copenhagen, Denmark, 2022.
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Formal education like higher education oftentimes emphasized on strict non-digital setting. This approach can lead to issues during stressful times (e.g., Covid crisis) or when learners’ needs in general are not considered. Moreover, these times highlighted how important self-regulated learning is and how much this capability is lacking in our educational system. To address these issues, we follow an Action Design Research approach and develop a gamified conversational agent (CA) that considers the learners’ needs. We present our CA and conduct a first small-scale evaluation following a mixed-method approach. First results show that students universally liked a CA for self-regulated digital learning and many enjoyed the gamified experience which helped students to be motivated to learn. As next steps we will develop the next iteration of our CA and conduct a long-term field test at a university.
Can you help me scale? A Systematic Analysis of Scaling Capabilities of Conversational Agents for Digital Services.Benner, Dennis; Schöbel, Sofia; Janson, Andreas; Leimeister, Jan Marco. In International Conference on Wirtschaftsinformatik (WI). 2022.
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Today’s servitized and digitalized society has significant implications for the economic system as value creation increasingly shifts towards digital services. Organizations are increasingly relying of artificial intelligence, which enables them to operate with novel technological artifacts like conversational agents (CA). These human-like AI-driven artifacts open new possibilities and channels for service providers to scale up their business even further and to create a business value or even to make processes more efficient. While we witness the results of that each day, we do not fully understand how such CAs can contribute to scaling up a business. Therefore, we conduct an analysis of service research and popular CAs to determine the status quo and highlight opportunities for scaling services with CAs. We contribute to theory by clarifying the meaning of scalability in combination with CAs and support practitioners by providing an overview about how organizations successfully scale their CAs.
How to Achieve Ethical Persuasive Design: A Review and Theoretical Propositions for Information Systems.Benner, Dennis; Schöbel, Sofia; Janson, Andreas; Leimeister, Jan Marco. In AIS Transactions on Human-Computer Interaction (THCI), 14(4), pp. 548–577. 2022.
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Persuasive system design (PSD) is an umbrella term for designs in information systems (IS) that can influence people’s attitude, behavior, or decision making for better or for worse. On the one hand, PSD can improve users’ engagement and motivation to change their attitude, behavior, or decision making in a favorable way, which can help them achieve a desired outcome and, thus, improve their wellbeing. On the other hand, PSD misuse can lead to unethical and undesirable outcomes, such as disclosing unnecessary information or agreeing to terms that do not favor users, which, in turn, can negatively impact their wellbeing. These powerful persuasive designs can involve concepts such as gamification, gamblification, and digital nudging, which all have become prominent in recent years and have been implemented successfully across different sectors, such as education, e-health, e-governance, e-finance, and digital privacy contexts. However, such persuasive influence on individuals raises ethical questions as PSD can impair users’ autonomy or persuade them towards a third party’s goals and, hence, lead to unethical decision-making processes and outcomes. In human-computer interaction, recent advances in artificial intelligence have made this topic particularly significant. These novel technologies allow one to influence the decisions that users make, to gather data, and to profile and persuade users into unethical outcomes. These unethical outcomes can lead to psychological and emotional damage to users. To understand the role that ethics play in persuasive system design, we conducted an exhaustive systematic literature analysis and 20 interviews to overview ethical considerations for persuasive system design. Furthermore, we derive potential propositions for more ethical PSD and shed light on potential research gaps.
Einwilligung im Polizeidatenschutzrecht. Johannes, Paul C. 2022.
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Verbrauchermacht in Bewegung. Protest, Politik und sozio-technische Infrastrukturen. Hohnsträter, Dirk; Krankenhagen, Stefan; Lamla, Jörn. Nomos, Baden-Baden, 2022.
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Active Learning in Multivariate Time Series Anomaly Detection.Huang, Zhixin. In Organic Computing -- Doctoral Dissertation Colloquium 2021, S. Tomforde, C. Krupitzer (eds.), pp. 113–124. kassel university press, 2022.
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Multivariate time series anomaly detection is an important research field of industry, science, and finances. In practical applications, unlabeled data is abundant, and labeled data is rare. Experts’ experience plays a key role in data labeling, while experts often have limited time, are expensive, and are concerned primarily with finding the potential anomalies. Active learning, which has been widely used to select the most informative data for labeling through experts, can improve training with less labeling effort. However, most active learning algorithms have not been evaluated on datasets with imbalanced class frequencies, such as anomaly detection. Although some semi-supervised and active learning methods were proposed to handle univariate time series data, not much work has been done on multivariate time series classification. Therefore, this article identifies critical challenges and proposes potential solutions for active learning in multivariate time series anomaly detection. We combine all possible solutions into a framework that conforms to the scope of the observation/control system in organic computing.
Self-Aware Microsystems.Gruhl, Christian; Tomforde, Sven; Sick, Bernhard. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 126–127. IEEE, 2022.
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Besides infrastructure-based solutions, small-scale microsystems are increasingly connected and interoperating with others in changing environments. Following the same motivation as for self-adaptive systems, this demands novel attempts to counter complexity and provide autonomous decision freedom that paves the path towards resilient and flexible behaviour. In this article, we outline a vision for research on self-aware microsystems (SAM) that aims at providing technical solutions that are especially relevant for initiatives such as self-improving system integration.
How to Govern the Crowd? Governance Mechanisms in Crowd Work.Hupe, Anna; Bretschneider, Ulrich. In Pre-ICIS Workshop on the Changing Nature of Work (SIG 11th CNoW). Copenhagen, Denmark, 2022.
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A Review of Uncertainty Calibration in Pretrained Object Detectors.Huseljic, Denis; Herde, Marek; Muejde, Mehmet; Sick, Bernhard. In arXiv e-prints, p. arXiv:2210.02935. 2022.
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In the field of deep learning based computer vision, the development of deep object detection has led to unique paradigms (e.g., two-stage or set-based) and architectures (e.g., Faster-RCNN or DETR) which enable outstanding performance on challenging benchmark datasets. Despite this, the trained object detectors typically do not reliably assess uncertainty regarding their own knowledge, and the quality of their probabilistic predictions is usually poor. As these are often used to make subsequent decisions, such inaccurate probabilistic predictions must be avoided. In this work, we investigate the uncertainty calibration properties of different pretrained object detection architectures in a multi-class setting. We propose a framework to ensure a fair, unbiased, and repeatable evaluation and conduct detailed analyses assessing the calibration under distributional changes (e.g., distributional shift and application to out-of-distribution data). Furthermore, by investigating the influence of different detector paradigms, post-processing steps, and suitable choices of metrics, we deliver novel insights into why poor detector calibration emerges. Based on these insights, we are able to improve the calibration of a detector by simply finetuning its last layer.
On the lattice of conceptual measurements.Hanika, Tom; Hirth, Johannes. In Information Sciences, 613, pp. 453–468. 2022.
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We present a novel approach for data set scaling based on scale-measures from formal concept analysis, i.e., continuous maps between closure systems, for which we derive a canonical representation. Moreover, we prove that scale-measures can be lattice ordered using the canonical representation. This enables exploring the set of scale-measures by the use of meet and join operations. Furthermore we show that the lattice of scale-measures is isomorphic to the lattice of sub-closure systems that arises from the original data. Finally, we provide another representation of scale-measures using propositional logic in terms of data set features. Our theoretical findings are discussed by means of examples.
Knowledge cores in large formal contexts.Hanika, Tom; Hirth, Johannes. In Annals of Mathematics and Artificial Intelligence, 90(6), pp. 537–567. 2022.
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Knowledge computation tasks, such as computing a base of valid implications, are often infeasible for large data sets. This is in particular true when deriving canonical bases in formal concept analysis (FCA). Therefore, it is necessary to find techniques that on the one hand reduce the data set size, but on the other hand preserve enough structure to extract useful knowledge. Many successful methods are based on random processes to reduce the size of the investigated data set. This, however, makes them hardly interpretable with respect to the discovered knowledge. Other approaches restrict themselves to highly supported subsets and omit rare and (maybe) interesting patterns. An essentially different approach is used in network science, called k-cores. These cores are able to reflect rare patterns, as long as they are well connected within the data set. In this work, we study k-cores in the realm of FCA by exploiting the natural correspondence of bi-partite graphs and formal contexts. This structurally motivated approach leads to a comprehensible extraction of knowledge cores from large formal contexts.
Machine-learned Behaviour Models for a Distributed Behaviour Repository.Jahl, A.; Baraki, H.; Jakob, S.; Fax, M.; Geihs, K. In Proceedings of the 14th International Conference on Agents and Artificial Intelligence (ICAART 2022), Vol. 1, pp. 188–199. Scitepress, 2022.
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Dynamically organised multi-agent systems that consist of heterogeneous participants require cooperation to fulfil complex tasks. Such tasks are commonly subdivided into subtasks that have to be executed by individual agents. The necessary teamwork demands coordination of the involved team members. In contrast to typical approaches like agent-centric and organisation-centric views, our solution is based on the task-centric view and thus contains active task components which select agents focusing on their Skills. It enables an encapsulated description of the task flow and its requirements including team cooperation, organisation, and location-independent allocation processes. Besides agent properties that represent syntactical and semantic information, agent behaviours are considered as well. The main contributions of this paper are hyperplane-based machine-learned Behaviour Models that are generated to capture the behaviour and consider the Behaviour Implementations as black boxes. These Behaviour Models are provided by a distributed behaviour repository that enables tasks to actively select fitting Behaviour Implementations. We evaluated our approach based on agents playing chessboard-like games autonomously.
LwTool: A data processing toolkit for building a real-time pressure mapping smart textile software system.Guo, Tao; Huang, Zhixin; Cheng, Jingyuan. In Pervasive and Mobile Computing, 80, p. 101540. Elsevier, 2022.
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Pressure mapping smart textile is a new type of sensing modality that transforms the pressure distribution over surfaces into digital ”image” and ”video”, that has rich application scenarios in Human Activity Recognition (HAR), because all human activities are linked with force change over certain surfaces. To speed up its application exploration, we propose a toolkit named LwTool for the data processing, including: (a) a feature library, including 1830 ready-to-use temporal and spatial features, (b) a hierarchical feature selection framework that automatically picks out the best features for a new application from the feature library. As real-time processing capability is important for instant user feedback, we emphasize not only on good recognition result but also on reducing time cost when selecting features. Our library and algorithms are validated on Smart-Toy and Smart-Bedsheet applications, an 89.7% accuracy for Smart-Toy and an 83.8% accuracy for Smart-Bedsheet can be achieved (10-fold cross-validation) using our feature library. Adopting the feature selection algorithm, the processing speed is increased by more than 3 times while maintaining high accuracy for both two applications. We believe our method could be a general and powerful toolkit in building real-time recognition software systems for pressure mapping smart textile.
Designing for Cultural Values: Towards a Theory-motivated Method for Culture-sensitive Adaptation of Information Systems.Janson, Andreas; Dickhaut, Ernestine; Söllner, Matthias. In Proceedings of the 55th Hawaii International Conference on System Sciences. Hawaii International Conference on System Sciences, 2022.
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To ensure that an intended target group accepts and uses an information system (IS) is a major challenge for service systems engineering and a key interest in IS research. On the one hand, individuals’ cultural values affect their willingness to use an IS; on the other hand, information technology (IT) is neither value-neutral and, thus, also affects IT acceptance and usage. Therefore, the adaptation of IS should consider both sources of value. Thus, in this paper, we present the theory-driven design of a method for culturesensitive IS adaptation that draws on IT-culture conflict theory. Our two-fold evaluation approach results show that the method enables to create feasible results for developing culture-sensitive design solutions for IS. As a theoretical contribution, we contribute to the exploration of culture in IS development; as a practical contribution, we provide guidance in how to adapt IS for specific target groups.
Posthuman Care.Braidotti, Rosi; Klumbytė, Goda. In More Posthuman Glossary, R. Braidotti, E. Jones, G. Klumbytė (eds.), pp. 105–106. Bloomsbury Publishing, 2022.
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Re-Imagining a ’We’ Beyond the Gathering of Reductions. Propositions for the Three Ecologies.Athanasiadou, Lila; Klumbytė, Goda; Rouvroy, Antoinette. In FOOTPRINT, 16(1), pp. 121–134. 2022.
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In this article Lila Athanasiadou and Goda Klumbytė engage in a conversation with Antoinette Rouvroy to revisit Guattari’s "Three Ecologies" and discuss their dynamics in and for the digital age. While a lot of the discourses on algorithms and digital future invoke catastrophic imaginaries of totalizing control, this conversation works with a propositional format, teasing out affirmative politics by pointing to spaces of potentiality within the environmental, the social and the mental realm. Starting from the environmental ecology and thinking of data as a waste, Rouvroy discusses planetary exhaustion as the result of the depletion of natural resources, forced labour practices and the assumption that data hold the answers to the problems posed by global capital. Proposing a space for material experimentation, she speculates on the potential of emerging subjectivities that remain irreducible to data flows. Within social ecology, Rouvroy advocates for the urgency to center digital policy as the space in which the new forms of institutions emerge in order to reorient the power of computation towards the commons. Lastly, within the mental ecology, Rouvroy reconceptualizes the legal subject as a performance that operates within the proliferation of asignifying data signs, reimagining a “we” beyond the gathering of reductions.
Work, Organizational, and Business Psychology: An Introductory Textbook. Allen, Joseph Andrew; Bipp, Tanja; Buengeler, Claudia; Dettmers, Jan; Gerpott, Fabiola; Gielnik, Michael M.; Hirschi, Andreas; Hüffmeier, Joachim; König, Cornelius J.; Meinecke, Annika L.; Meyer, Bertold; Niessen, Cornelia; Ohly, Sandra; Pletzer, Jan Luca; Rigotti, Thomas; Schmitt, Antje; Wendsche, Johannes; Wiese, Bettina. Kohlhammer Verlag, 2022.
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Diary Studies, a Double‐Edged Sword? An Experimental Exploration of Possible Distortions Due to Daily Reporting of Social Interactions.Gochmann, Viktoria; Ohly, Sandra; Kotte, Silja. In Journal of Organizational Behavior. 2022.
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Implications from Responsible Human-Robot Interaction with Anthropomorphic Service Robots for Design Science.Knof, Merlind; Heinisch, Judith S.; Kirchhoff, Jérôme; Rawal, Niyati; David, Klaus; Von Stryk, Oskar; Stock-Homburg, Ruth Maria. In Proceedings of the 55th Hawaii International Conference on System Sciences, pp. 5827–5836. 2022.
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Accelerated by the COVID-19 pandemic, anthropomorphic service robots are continuously penetrating various domains of our daily lives. With this development, the urge for an interdisciplinary approach to responsibly design human-robot interaction (HRI), with particular attention to human dignity, privacy, compliance, and transparency, increases. This paper contributes to design science, in developing a new artifact, i.e., an interdisciplinary framework for designing responsible HRI with anthropomorphic service robots, which covers the three design science research cycles. Furthermore, we propose a multi-method approach by applying this interdisciplinary framework. Thereby, our finding offer implications for designing HRI in a responsible manner.
Heterogeneous Multi-Source Deep Adaptive Knowledge-Aware Learning for E-Mobility.Ali, Mohammad Wazed. In IEEE International Conference on Autonomic Computing and Self-Organizing Systems Companion (ACSOS-C), pp. 57–60. IEEE, 2022.
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Electromobility (e-mobility) reduces global fossil fuel-based energy demand and promotes the usage of renewable energy sources. Different types of electric vehicle (EVs) production have increased recently due to their need. However, there is no fixed charging behavior, and demand exists. Uncontrolled EV charging may lead to a harmful impact on the power grid. Besides, most renewable energy sources depend highly on the weather and location. Thus, analyzing, forecasting, and adapting EV charging demand is essential to prevent power outages. Deep Learning (DL) models are a de facto standard technology for energy forecasting in many scenarios. Still, there is a lack of real-world data in the e-mobility domain to train a DL model from scratch. Besides, DL models have explainability issues, which can hinder decision-making. This article proposes a novel framework for addressing data scarcity issues, enabling continuous adaptation to change, and improving explainability.
Deep Adaptive Knowledge-Aware Learning for E-Mobility.Ali, Mohammad Wazed. In Organic Computing - Doctoral Dissertation Colloquium 2022, S. Tomforde, C. Krupitzer (eds.), pp. 139–155. kassel university press, 2022.
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Electromobility can reduce global energy demand by reducing the dependence on fossil fuels. Many different types of electric vehicles (EVs) have been produced recently and EV usage is also rising. However, there is no fixed charging behavior of these EV users. Moreover, most renewable energy sources are stochastic in nature. Thus, it is essential that EV charging demand is controlled and adapted in advance to prevent catastrophic failures such as blackouts. Deep learning models are standard technology for power forecasting in many scenarios. However, there is a lack of real-world heterogeneous multi-source data in the e-mobility domain to train a deep learning model from scratch. Moreover, deep learning (DL) models lack model explainability. Therefore, EV stakeholders can benefit from a framework that coordinates deep transfer learning, interactive machine learning, and heterogeneous graph representation learning (to ensure self-explainability). This work aims to develop a novel framework to solve e-mobility-related tasks such as forecasting EV loads efficiently in a resource-constrained environment (data, computing power, etc.). It also describe various research challenges and potential approaches to build the proposed framework. This work also present a deep generative model to synthesize EV charging session data.
Empowerment Effects in Human-machine Collaboration - A Systematic Literature Review and Directions on Hybrid Intelligence Behavior Patterns.Akmeikina, Elisabeth; Eilers, Karen; Li, Mahei Manhai; Peters, Christoph. In Pacific Asia Conference on Information Systems (PACIS). Taipei/Sidney, 2022.
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The potentials of artificial intelligence (AI) are manifold and their discussion has gained momentum in research and practice. In the same realm, AI also raises fears among employees of being replaced by AI technologies and, therefore, shying away from using it. Generally, employees want to be empowered to do their job and seek both more responsibility, as well as make their own decisions. In this paper, we conduct a systematic literature review that investigates the current state of the literature on the potential empowering effects of AI-based human-machine behavior. We thus sorted the literature into three behavioral categories: humans shape machine behavior, machines shape human behavior, human-machine co-behavior and crossed them with psychological empowerment dimensions of significance, competence, self-determination, and influence. Our results show corresponding literature streams and provide future research directions in a field that is likely to disrupt the way we work in the future.
Intrinsic dimension of geometric data sets.Hanika, Tom; Schneider, Friedrich Martin; Stumme, Gerd. In Tohoku Mathematical Journal, 74(1), pp. 23–52. Tohoku University, Mathematical Institute, 2022.
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The curse of dimensionality is a phenomenon frequently observed in machine learning (ML) and knowledge discovery (KD). There is a large body of literature investigating its origin and impact, using methods from mathematics as well as from computer science. Among the mathematical insights into data dimensionality, there is an intimate link between the dimension curse and the phenomenon of measure concentration, which makes the former accessible to methods of geometric analysis. The present work provides a comprehensive study of the intrinsic geometry of a data set, based on Gromov's metric measure geometry and Pestov's axiomatic approach to intrinsic dimension. In detail, we define a concept of geometric data set and introduce a metric as well as a partial order on the set of isomorphism classes of such data sets. Based on these objects, we propose and investigate an axiomatic approach to the intrinsic dimension of geometric data sets and establish a concrete dimension function with the desired properties. Our model for data sets and their intrinsic dimension is computationally feasible and, moreover, adaptable to specific ML/KD-algorithms, as illustrated by various experiments.
Optimizing a superconducting radio-frequency gun using deep reinforcement learning.Meier, David; Ramirez, Luis Vera; Völker, Jens; Viefhaus, Jens; Sick, Bernhard; Hartmann, Gregor. In Physical Review Accelerators and Beams, 25(10), p. 104604. American Physical Society, 2022.
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Superconducting photoelectron injectors are promising for generating highly brilliant pulsed electron beams with high repetition rates and low emittances. Experiments such as ultrafast electron diffraction, experiments at the Terahertz scale, and energy recovery linac applications require such properties. However, optimizing the beam properties is challenging due to the high number of possible machine parameter combinations. This article shows the successful automated optimization of beam properties utilizing an already existing simulation model. To reduce the required computation time, we replace the costly simulation with a faster approximation with a neural network. For optimization, we propose a reinforcement learning approach leveraging the simple computation of the derivative of the approximation. We prove that our approach outperforms standard optimization methods for the required function evaluations given a defined minimum accuracy.
More Posthuman Glossary. Braidotti, Rosi; Jones, Emily; Klumbytė, Goda. In First, of Theory in the New Humanities. Bloomsbury Publishing, 2022.
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The notion of the posthuman continues to both intrigue and confuse, not least because of the huge number of ideas, theories and figures associated with this term. More Posthuman Glossary provides a way in to the dizzying array of posthuman concepts, providing vivid accounts of emerging terms. It is much more than a series of definitions, however, in that it seeks to imagine and predict what new terms might come into being as this exciting field continues to expand. A follow-up volume to the brilliant interventions of Posthuman Glossary (2018), this book extends and elaborates on that work, particularly focusing on concepts of race, indigeneity and new ideas in radical ecology. It also includes new and emerging voices within the new humanities and multiple modes of communicating ideas. This is an indispensible glossary for those who are exploring what the non-human, inhuman and posthuman might mean in the 21st century.
Bußgeldadressaten nach dem BSIG unter besonderer Berücksichtigung des Entwurfs der zweiten Richtlinie zur Netz- und Informationssicherheit.Hubert, T.; Schaller, T. In Daten, Plattformen und KI als Dreiklang unserer Zeit. Tagungsband DSRI-Herbstakademie 2022, C. Heinze (ed.), pp. 825–843. Edewecht, 2022.
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Three-dimensional close-to-substrate trajectories of magnetic microparticles in dynamically changing magnetic field landscapes.Huhnstock, Rico; Reginka, Meike; Sonntag, Claudius; Merkel, Maximilian; Dingel, Kristina; Sick, Bernhard; Vogel, Michael; Ehresmann, Arno. In Scientific Reports, 12(1), pp. 1–10. Springer Nature, 2022.
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The transport of magnetic particles (MPs) by dynamic magnetic field landscapes (MFLs) using magnetically patterned substrates is promising for the development of Lab-on-a-chip (LOC) systems. The inherent close-to-substrate MP motion is sensitive to changing particle–substrate interactions. Thus, the detection of a modified particle–substrate separation distance caused by surface binding of an analyte is expected to be a promising probe in analytics and diagnostics. Here, we present an essential prerequisite for such an application, namely the label-free quantitative experimental determination of the three-dimensional trajectories of superparamagnetic particles (SPPs) transported by a dynamically changing MFL. The evaluation of defocused SPP images from optical bright-field microscopy revealed a “hopping”-like motion of the magnetic particles, previously predicted by theory, additionally allowing a quantification of maximum jump heights. As our findings pave the way towards precise determination of particle–substrate separations, they bear deep implications for future LOC detection schemes using only optical microscopy.
Barriers for SMEs in Adopting Crowdsourcing.Hupe, Anna; Bretschneider, Ulrich; Trostmann, Tim; Stubbemann, Lena. In 35th Bled eConference Digital Restructuring and Human (Re)action, pp. 233–248. University of Maribor Press, Maribor, Slovenia, 2022.
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Despite its undisputable benefits for firms, crowdsourcing is rarely applied in small and medium sized enterprises (SME), yet. Until today extant literature provides only an uncomplete picture of the barriers that hinder SMEs from adopting crowdsourcing. Because of these incomplete insights on this phenomenon there is a great deal of uncertainty on how to overcome these barriers all the more. In the scope of an interview series with 15 SMEs we explore a range of different barriers. The findings from our study do not only expand the so far incomplete body of knowledge but also provide practical references for SMEs to be aware of the barriers. This simplifies avoiding them and successfully adopting crowdsourcing.

2021[ to top ]

Die Beauftragung externer Gutachter durch die Medizinischen Dienste.Johannes, P.; Geminn, Christian. In NZS. 2021.
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Abwägung zur Sicherheit der Datenverarbeitung durch technische und organisatorische Maßnahmen.Johannes, P.; Geminn, Christian. In InTeR – Zeitschrift für Innovations- und Technikrecht, pp. 140–146. 2021.
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Datenschutzfreundliche Algorithmen. Datenminimierung in der Kontextverarbeitung.Löber, Lena; Roßnagel, Alexander; David, K; Lange, S. In Datenschutz und Datensicherheit, pp. 616–622. 2021.
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Digitales EU-COVID-Zertifikat und CovPass-App: Rückkehr zur Freiheit oder Überwachungsinstrument?Löber, Lena. In ZD-Aktuell, p. 05220. 2021.
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Toward AI-enhanced online-characterization and shaping of ultrashort X-ray free-electron laser pulses.Dingel, Kristina; Otto, Thorsten; Marder, Lutz; Funke, Lars; Held, Arne; Savio, Sara; Hans, Andreas; Hartmann, Gregor; Meier, David; Viefhaus, Jens; Sick, Bernhard; Ehresmann, Arno; Ilchen, Markus; Helml, Wolfram. In arXiv e-prints, p. arXiv:2108.13979. 2021.
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X-ray free-electron lasers (XFELs) as the world`s most brilliant light sources provide ultrashort X-ray pulses with durations typically on the order of femtoseconds. Recently, they have approached and entered the attosecond regime, which holds new promises for single-molecule imaging and studying nonlinear and ultrafast phenomena like localized electron dynamics. The technological evolution of XFELs toward well-controllable light sources for precise metrology of ultrafast processes was, however, hampered by the diagnostic capabilities for characterizing X-ray pulses at the attosecond frontier. In this regard, the spectroscopic technique of photoelectron angular streaking has successfully proven how to non-destructively retrieve the exact time-energy structure of XFEL pulses on a single-shot basis. By using artificial intelligence algorithms, in particular convolutional neural networks, we here show how this technique can be leveraged from its proof-of-principle stage toward routine diagnostics at XFELs, thus enhancing and refining their scientific access in all related disciplines.
Attribute Selection Using Contranominal Scales.Dürrschnabel, Dominik; Koyda, Maren; Stumme, Gerd. In Graph-Based Representation and Reasoning, T. Braun, M. Gehrke, T. Hanika, N. Hernandez (eds.), pp. 127–141. Springer International Publishing, Cham, 2021.
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Formal Concept Analysis (FCA) allows to analyze binary data by deriving concepts and ordering them in lattices. One of the main goals of FCA is to enable humans to comprehend the information that is encapsulated in the data; however, the large size of concept lattices is a limiting factor for the feasibility of understanding the underlying structural properties. The size of such a lattice depends on the number of subcontexts in the corresponding formal context that are isomorphic to a contranominal scale of high dimension. In this work, we propose the algorithm ContraFinder that enables the computation of all contranominal scales of a given formal context. Leveraging this algorithm, we introduce {\$$}{\$$}{backslashdelta {\$$}{\$$}$$\delta$$-adjusting, a novel approach in order to decrease the number of contranominal scales in a formal context by the selection of an appropriate attribute subset. We demonstrate that {\$$}{\$$}{backslashdelta {\$$}{\$$}$$\delta$$-adjusting a context reduces the size of the hereby emerging sub-semilattice and that the implication set is restricted to meaningful implications. This is evaluated with respect to its associated knowledge by means of a classification task. Hence, our proposed technique strongly improves understandability while preserving important conceptual structures.
Kommentierung der §§ 49-51 HDSIG (Automatisierte Einzelentscheidung; Allgemeine Informationen zu Datenverarbeitungen; Benachrichtigung betroffener Personen).Löber, Lena. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos, Baden-Baden, 2021.
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Force-Directed Layout of Order Diagrams Using Dimensional Reduction.Dürrschnabel, Dominik; Stumme, Gerd. In Formal Concept Analysis, A. Braud, A. Buzmakov, T. Hanika, F. Le Ber (eds.), pp. 224–240. Springer International Publishing, Cham, 2021.
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Order diagrams allow human analysts to understand and analyze structural properties of ordered data. While an expert can create easily readable order diagrams, the automatic generation of those remains a hard task. In this work, we adapt force-directed approaches, which are known to generate aesthetically-pleasing drawings of graphs, to the realm of order diagrams. Our algorithm ReDraw thereby embeds the order in a high dimension and then iteratively reduces the dimension until a two-dimensional drawing is achieved. To improve aesthetics, this reduction is equipped with two force-directed steps where one step optimizes the distances of nodes and the other one the distances of lines in order to satisfy a set of a priori fixed conditions. By respecting an invariant about the vertical position of the elements in each step of our algorithm we ensure that the resulting drawings satisfy all necessary properties of order diagrams. Finally, we present the results of a user study to demonstrate that our algorithm outperforms comparable approaches on drawings of lattices with a high degree of distributivity.
Quick Reference Guide to eIDAS-Regulation.Johannes, P. In ZD-Aktuell, (910), p. 05268. 2021.
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AI - Based On The Fly Design of Experiments in Physics and Engineering.Dingel, Kristina; Liehr, Alexander; Vogel, Michael; Degener, Sebastian; Meier, David; Niendorf, Thomas; Ehresmann, Arno; Sick, Bernhard. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 150–153. IEEE, 2021.
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AdaPT: Adaptable particle tracking for spherical microparticles in lab on chip systems.Dingel, Kristina; Huhnstock, Rico; Knie, André; Ehresmann, Arno; Sick, Bernhard. In Computer Physics Communications, 262, p. 107859. Elsevier, 2021.
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Due to its rising importance in science and technology in recent years, particle tracking in videos presents itself as a tool for successfully acquiring new knowledge in the field of life sciences and physics. Accordingly, different particle tracking methods for various scenarios have been developed. In this article, we present a particle tracking application implemented in Python for, in particular, spherical magnetic particles, including superparamagnetic beads and Janus particles. In the following, we distinguish between two sub-steps in particle tracking, namely the localization of particles in single images and the linking of the extracted particle positions of the subsequent frames into trajectories. We provide an intensity-based localization technique to detect particles and two linking algorithms, which apply either frame-by-frame linking or linear assignment problem solving. Beyond that, we offer helpful tools to preprocess images automatically as well as estimate parameters required for the localization algorithm by utilizing machine learning. As an extra, we have implemented a technique to estimate the current spatial orientation of Janus particles within the x-y-plane. Our framework is readily extendable and easy-to-use as we offer a graphical user interface and a command-line tool. Various output options, such as data frames and videos, ensure further analysis that can be automated.
Pose Based Trajectory Forecast of Vulnerable Road Users Using Recurrent Neural Networks.Kress, Viktor; Zernetsch, Stefan; Doll, Konrad; Sick, Bernhard. In Workshop on Integrated Artificial Intelligence in Data Science, ICPR, pp. 57–71. Springer, 2021.
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KI-Lösungen gegen Desinformation in Social Networks – Fragen des grundrechtskonformen und transparenten Einsatzes.Löber, Lena. 2021.
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Das IT-Sicherheitsgesetz 2.0: Kompetenzaufwuchs des BSI und neue Pflichten für Unternehmen.Hornung, Gerrit. In Neue Juristische Wochenschrift 2021, pp. 1985–1991. 2021.
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Datenschutz in der Katastrophe. Zulässigkeitstatbestände und Vorgaben für die Datenverarbeitung zur Katastrophenvorsorge und -bekämpfung - Teil 2.Hornung, G.; Stroscher, J.-P. In Zeitschrift für das Gesamte Sicherheitsrecht, pp. 185–191. 2021.
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China: Zweiter Entwurf eines Datenschutzgesetzes veröffentlicht.Johannes, P. In ZD-Aktuell, p. 05219. 2021.
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Opening the Black Box of Music Royalties with the Help of Hybrid Intelligence.Elshan, Edona; Engel, Christian; Ebel, Philipp. In Hawaii International Conference on System Sciences (HICCS). 2021.
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The ever-increasing complexity of the music industry and the intensified resentment of artists towards collecting societies call for a transformation and a change of behavior within the music ecosystem. This article introduces a hybrid intelligence system, that ameliorates the current situation by combining the intelligence of humans and machines. This study proposes design requirements for hybrid intelligence systems in the music industry. Using a design science research approach, we identify design requirements both inductively from expert interviews and deductively from theory and present a first prototypical instantiation of a respective hybrid intelligence system. Overall, this shall enrich the body of knowledge of hybrid intelligence research by transferring its concepts into a new context. Furthermore, the identified design requirements shall serve as a foundation for researchers and practitioners to further explore and design hybrid intelligence in the music industry and beyond.
Developing Lawful Technologies – A Revelatory Case Study on Design Patterns.Dickhaut, Ernestine; Li, Mahei Manhai; Janson, Andreas; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). 2021.
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Higher legal standards regarding the data protection of individuals, such as the European General Data Protection Regulation, increase the pressure on developing lawful systems. In the development of technologies, not only developers are involved. It also requires knowledge from other stakeholders, such as legal experts, that lack technical knowledge but are required to understand IT artifacts. We see two strings that can benefit from the use of design patterns: first, the well-known use of design patterns to support developers in case of recurring problems. Second, we see potential that legal experts, who have to interact with and understand complicated, novel technologies, benefit from the same patterns. We conduct a revelatory case study using design patterns to develop and assess a smart learning assistant. We scaffolded the case interpretation through the human-centered view of socio-materiality and provide contributions concerning the use of design patterns in the development and assessment of lawful technologies.
Why the Agile Mindset Matters.Eilers, Karen; Simmert, Benedikt; Peters, Christoph; Leimeister, Jan Marco. In Academy of Management Annual Meeting (AOM). 2021.
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Volatility, uncertainty, ambiguity, and complexity (VUCA) are drivers in today’s business world. Therefore, an increasing number of organizations implement agility (agile methods) to cope with the rapid and accelerating change. However, these agile transformations do not succeed unhindered, and some fail. One reason for that is the employees lacking an agile mindset and they do not support or participate in the transformation. So far, knowledge of the agile mindset is in its infancy. A conceptualization for developing a measuring instrument on the individual level is lacking. Furthermore, the relevance of the agile mindset regarding organizational performance in a VUCA world is still unclear. Our study aims to close this gap. To do so, we examine the agile mindset with 15 qualitative interviews and conduct an online survey (N=449) to predict organizational agility and organizational performance based on the agile mindset. As for results, we conceptualize the agile mindset as an attitude that comprises four dimensions: ’learning spirit’, ‘collaborative exchange’, ‘empowered self-guiding’, and ‘iterative value creation’. We have found an indirect effect of the agile mindset affecting organizational performance towards organizational agility. These findings contribute to the agility and management research by providing both a conceptualization and a measuring instrument for the agile mindset. Furthermore, the agile mindset´s relevance in agile transformation is explained and its relation to organizational performance outlined. For successful agile transformation, executives must focus on the agile mindset of their employees and foster this by e.g. being a role model.
Datenschutz bei der biometrischen Gesichtserkennung. Künstliche Intelligenz und Mustererkennung als Herausforderung für das Recht, Datenschutz und Datensicherheit.Hornung, Gerrit.; Schindler, Stephan. In Schwerpunkt, pp. 515–521. 2021.
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Digital Shadows in Self-Improving System Integration: A Concept Using Generative Modelling.Al-Falouji, Ghassan; Gruhl, Christian; Tomforde, Sven. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 166–171. IEEE, 2021.
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Sense of Control for Empowerment in Hybrid Intelligence Service Systems.Eilers, Karen; Li, Mahei. In International Conference on Information Systems (ICIS). Workshop: Service and Information Systems Research for a Better Future. Austin, Texas, USA, 2021.
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Information Management for Multi-Agent Systems.Alhamwy, Yasin. In Electronic Communications of the EASST, 80. 2021.
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Betriebliches Datenschutz-Paradox oder betrieblicher Datenschutz-Calculus?Lurtz, Helmut; Schomberg, Sabrina. In ZD-Aktuell, p. 05269. 2021.
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Changing infrastructures of musical taste formation?Kropf, Jonathan. In Popular Music and the Poetics of Self in Fiction, N. Bachleitner, J. Werner (eds.), pp. 82–96. Brill, Leiden/Boston, 2021.
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Towards Emancipatory Technology Studies.Frey, Philipp; Schaupp, Simon; Wenten, Klara-Aylin. In Nanoethics, 15, pp. 19–27. 2021.
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Kommentierung von § 20 HDSIG.Hornung, Gerrit. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos Verlagsgesellschaft, Baden-Baden, 2021.
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Nationale Akkreditierungsanforderungen nach Art. 43 Abs. 3 DS-GVO iVm Art. 57 Abs. 1 lit. p DS-GVO – Vergleich Dänemark und Niederlande.Maier-Reinhardt, Natalie. In ZD-Aktuell 2021, (20), p. 05559. 2021.
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Kommentierung von § 23 (Datenverarbeitung für Zwecke des Beschäftigungsverhältnisses), § 33 (Auskunftsrecht der betroffenen Person), § 34 (Recht auf Löschung), § 52 (Auskunftsrecht) und § 53 (Rechte auf Berichtigung und Löschung sowie Einschränkung der Verarbeitung) HDSIG.Maier-Reinhardt, Natalie. In Hessisches Datenschutz- und Informationsfreiheitsgesetz (HDSIG), A. Roßnagel (ed.). Nomos, Baden-Baden, 2021.
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Towards Social Role-Based Interruptibility Management.Anderson, Christoph; Heinisch, Judith Simone; Deldari, Shohreh; Salim, Flora D.; Ohly, Sandra; David, Klaus; Pejovic, Veljko. In CoRR, abs/2106.04265. 2021.
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Datenkompetenz durch edukatives Privacy Nudging: Zentrale Prinzipien und Effekte auf Lernprozesse.Janson, Andreas; Kreidel, Leonie; Schöbel, Sofia; Hornung, Gerrit; Söllner, Matthias; Leimeister, Jan Marco. In Aufwachsen in überwachten Umgebungen: Interdisziplinäre Positionen zu Privatheit und Datenschutz in Kindheit und Jugend, I. Stapf, R. A. Quinn, M. Friedewald, J. Heesen, N. Krämer (eds.), pp. 255–277. Nomos, Baden-Baden, Germany, 2021.
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Die Digitalisierung verändert nicht nur unser privates, sondern auch unser Arbeitsleben. Immer mehr Daten über Individuen sind online verfügbar und werden für die Nutzung von bestimmten Online Services vorausgesetzt. Hierbei verlieren die Nutzenden oft den Überblick, wie und welche Daten sie von sich preisgeben. Dies birgt nicht nur das Risiko der Preisgabe von privaten Daten, sondern auch unternehmensseitig das Risiko, dass wichtige Daten außerhalb des Unternehmens veröffentlicht werden. Hier kann das Konzept des digitalen Nudgings angewandt werden, welches nunmehr auch als edukatives Privacy Nudging genutzt werden kann. Das Konzept bezweckt, Individuen durch bestimmte Elemente wie beispielsweise Defaults zu Verhaltensänderungen anzuregen. Dieser Beitrag hat zum Ziel, einen Überblick darüber zu geben, welche Privacy Nudges es im edukativen Bereich gibt und wie diese mit verschiedenen Lerntheorien in Einklang gebracht werden können. Der Text soll Forschern und Praktikern eine Orientierung geben, selbst edukative Privacy Nudges zu gestalten und endet mit einem Fallbeispiel, das aufzeigt wie einfache Gestaltungsänderungen Individuen dazu anregen können, sich privatheitsfreundlicher zu verhalten und sorgsamer mit ihren privaten Daten umzugehen.
Schleichender Wandel mit ambivalenten Folgen. Rezension zu „Digitale Transformation“ von Jan-Felix Schrape.Kropf, Jonathan. In Soziopolis - Gesellschaft beobachten. Auf soziopolis.de, 2021.
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It is only for your own good, or is it? Ethical Considerations for Designing Ethically Conscious Persuasive Information Systems.Benner, Dennis; Schöbel, Sofia; Janson, Andreas. In Americas Conference on Information Systems (AMCIS). Association for Information Systems, Montreal, Kanada, 2021.
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Persuasive designs, including gamification and digital nudging, have become well renowned during the last years and have been implemented successfully across different sectors including education, e-health, e-governance, e-finance and general information systems. In this regard, persuasive design can support desirable changes in attitude and behavior of users in order to achieve their own goals. However, such persuasive influence on individuals raises ethical questions as persuasive designs can impair the autonomy of users or persuade the user towards goals of a third party and hence lead to unethical decision-making processes. In human-computer interaction this is especially significant with the advent of advanced artificial intelligence that can emulate human behavior and thus bring new dynamics into play. Therefore, we conduct a systematic literature analysis with the goal to compile an overview of ethical considerations for persuasive system design, derive potential guidelines for ethical persuasive designs and shed light on potential research gaps.
Exploring the State-of-the-Art of Persuasive Design for Smart Personal Assistants.Benner, Dennis; Schöbel, Sofia; Janson, Andreas. In International Conference on Wirtschaftsinformatik (WI). Duisburg-Essen, Germany, 2021.
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Driven by technological advances, smart personal assistants (SPA) have gained importance in human-computer interaction. SPAs can influence user behavior and persuade them towards an outcome. However, users often lack motivated to interact with SPAs. One way to support this interaction is persuasive system design; considering concepts as gamification and/or digital nudging. Although SPA research has increased recently, there is still no shared knowledge about persuasive designs. Therefore, we aim to identify the current state-of-the-art for persuasive SPA design to understand how interactions and designs can be improved referring to persuasive system design. Thus, we conduct a systematic literature analysis to represent how gamification and digital nudging are used to design SPAs and conclude if and how those concepts can support SPA interactions. Consequently, we contribute to theory, providing better understanding about SPA interaction and design making SPAs more engaging and entertaining. Practitioners can use this contribution for persuasive SPA designs.
Rechtshandbuch Social Media. Hornung, G.; Müller-Terpitz, F. 2nd ed. Springer Verlag, Heidelberg, 2021.
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Assistenzsysteme in der Industrie 4.0. Arbeitsrechtliche und beschäftigtendatenschutzrechtliche Fragestellungen in einem automatisierten Arbeitsumfeld.Hofmann, Kai. 1. Auflage 2021, , Vol. Band 45. Nomos Verlagsgesellschaft, Baden-Baden, 2021.
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Kapitel „Telekommunikation und Telemedien“.Hornung, G.; Schindler, S. In IT-Sicherheitsrecht. Praxishandbuch, G. Hornung, M. Schallbruch (eds.), pp. 483–519. Nomos Verlagsgesellschaft, Baden-Baden, 2021.
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On the Required Movement Recognition Accuracy in Cooperative VRU Collision Avoidance Systems.Bachmann, Marek; Morold, Michel; David, Klaus. In IEEE Transactions on Intelligent Transportation Systems, 22(3), pp. 1708–1717. 2021.
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Kapitel „Einführung“.Hornung, G.; Schallbruch, M. In IT-Sicherheitsrecht. Praxishandbuch, G. Hornung, M. Schallbruch (eds.), pp. 23–32. Nomos Verlagsgesellschaft, Baden-Baden, 2021.
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Boolean Substructures in Formal Concept Analysis.Koyda, Maren; Stumme, Gerd. In ICFCA: International Conference on Formal Concept Analysis, of Lecture Notes in Computer Science, pp. 38–53. Springer, 2021.
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Statistical Analysis of Pairwise Connectivity.Krempl, Georg; Kottke, Daniel; Pham, Tuan. In International Conference on Discovery Science (DS), of Lecture Notes in Computer Science, pp. 138–148. Springer, 2021.
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IT-Sicherheitsrecht. Praxishandbuch. Hornung, G.; Schallbruch, M. Nomos Verlagsgesellschaft, Baden-Baden, 2021.
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Evaluation of an Augmented Reality Instruction for a Complex Assembly Task: Comparison of a Smartphone-Based Augmented Reality Instruction with a Conventional Paper Instruction for the Teach-in Phase in Manual Assembly.Funk, J.; Schmidt, L. In i-com - Zeitschrift für interaktive und kooperative Medien, 20(1), pp. 63–72. 2021.
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This study compares the use of a marker-based AR instruction with a paper instruction commonly used in manual assembly. Hypotheses were tested as to whether the instruction type affects assembly time, number of errors, usability, and employee strain. Instead of student participants and artificial assembly tasks (e. g. Lego assemblies), the study was conducted with 16 trainees in a real workplace for the assembly of emergency door release handles in rail vehicles. Five assembly runs were performed. Assembly times and assembly errors were determined from recorded videos. Usability (SUS) and strain (NASA-TLX) were recorded with questionnaires. After a slower assembly at the beginning, the AR group assembled significantly faster in the fifth run. The comparable number of errors, usability and strain make marker-based AR applications interesting for knowledge transfer in manual assembly, especially due to the easy entrance and low costs.
DELEN – A Process Model for the Systematic Development of Legitimate Digital Nudges.Barev, Torben Jan; Schöbel, Sofia; Janson, Andreas; Leimeister, Jan Marco. In International Conference on Design Science Research in Information Systems and Technology (DESRIST), Vol. 12807, L. Chandra Kruse, S. Seidel, G. I. Hausvik (eds.), pp. 299–312. Springer, Cham, 2021.
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Digital nudging is a promising approach from behavioral economics. In deci-sions where individuals tend to struggle, nudges can support users of digital systems by aligning their behavior with their preferences. Despite their wide use, most digital nudges are designed to support the intended behavior from the perspective of a company while neglecting potential legal, ethical, or individual constraints or preferences. With modern technologies such as artificial intelli-gence or big data, these issues multiply and with the increasing effectiveness of digital nudges and use of new technologies, this has become even more critical. Thus, in this paper we follow a Design Science Research approach to develop a process model for the systematic development of legitimate nudges (DELEN). Legitimacy requires that dealings between different entities shall be fair. Unlike other models, we set normative boundaries derived from literature, expert in-terviews, and target group segmentation as integral elements. Target group seg-mentation increases nudge effectiveness and avoids unnecessary burdens for other individuals. By doing so, the DELEN process model paves the way for legitimate and effective digital nudges.
Vergleichende Evaluation von Augmented-Reality-Anwendungen zur Ergänzung von Lehrbüchern in der Berufsausbildung.Funk, J.; Schmidt, L. In Arbeit HUMAINE gestalten: 67. Kongress der Gesellschaft für Arbeitswissenschaft (Bochum 2021), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.2.1). GfA-Press, Dortmund, 2021.
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In der hier vorgestellten Laborstudie wurden zwei Arten markerbasierter Augmented-Reality-Ergänzungen zu einem Lehrbuch mit einer konventionellen Ergänzung in Papierform verglichen. Hierbei wurden drei Unterthemen aus der Ausbildung zum Kraftfahrzeugmechatroniker ausbalanciert um je eine Art der Zusatzinformation ergänzt. Dabei wurde der Lernerfolg mit Multiple-Choice-Aufgaben kontrolliert sowie die Gebrauchstauglichkeit (SUS), die Beanspruchung (NASA-rTLX), die räumliche Vorstellung (RV) und das Nutzererlebnis (UEQ) mit Fragebögen im Within-Subject Design (N = 24) erhoben. Die Ergebnisse zeigen ein höheres Nutzererlebnis und eine bessere räumliche Vorstellung bei Verwendung der AR im Vergleich zur konventionellen Ergänzung bei jeweils vergleichbarer niedriger Beanspruchung, hoher Gebrauchstauglichkeit sowie Lernleistung.
The Dark Side of Privacy Nudging – An Experimental Study in the Context of a Digital Work Environment.Barev, Torben Jan; Schwede, Melanie; Janson, Andreas. In Hawaii International Conference on System Sciences (HICSS). 2021.
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Privacy nudging is a promising method to get users to disclose less personal information in digital work environments. In this work, we tested two digital privacy nudges: a social and a framing nudge. To empirically measure the effectiveness of the two privacy nudges, we developed an online experiment. We evaluated 223 data sets with the partial least squares structural equation modeling (PLS-SEM) and a two-factorial Analysis of Variance (ANOVA). The results indicate that privacy nudges negatively influence information disclosure behavior. The privacy framing nudge has a direct and indirect effect, while the privacy social nudge has only an indirect effect on the information disclosure behavior. Individuals exposed to the privacy nudges perceived the stimulus as threat. Importantly, both nudges spark negative feelings. With this research, we are contributing to the discussion of what drives privacy nudge effectiveness and influences information disclosure behavior in digital work environments.
Einführung in das Rechtshandbuch.Hornung, G.; Müller-Terpitz, R. In Rechtshandbuch Social Media., 2nd ed., G. Hornung, R. Müller-Terpitz (eds.), pp. 1–12. Springer, Heidelberg, 2021.
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Triadic Exploration and Exploration with Multiple Experts.Felde, Maximilian; Stumme, Gerd. In Formal Concept Analysis, A. Braud, A. Buzmakov, T. Hanika, F. Le Ber (eds.), pp. 175–191. Springer International Publishing, Cham, 2021.
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Formal Concept Analysis (FCA) provides a method called attribute exploration which helps a domain expert discover structural dependencies in knowledge domains that can be represented by a formal context (a cross table of objects and attributes). Triadic Concept Analysis is an extension of FCA that incorporates the notion of conditions. Many extensions and variants of attribute exploration have been studied but only few attempts at incorporating multiple experts have been made. In this paper we present triadic exploration based on Triadic Concept Analysis to explore conditional attribute implications in a triadic domain. We then adapt this approach to formulate attribute exploration with multiple experts that have different views on a domain.
Separation of Aleatoric and Epistemic Uncertainty in Deterministic Deep Neural Networks.Huseljic, Denis; Sick, Bernhard; Herde, Marek; Kottke, Daniel. In International Conference on Pattern Recognition (ICPR), pp. 9172–9179. IEEE, 2021.
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Datenschutzrechtliche Aspekte der Social Media.Hornung, G. In Rechtshandbuch Social Media, 2nd ed., G. Hornung, R. Müller-Terpitz (eds.), pp. 131–198. Springer, Heidelberg, 2021.
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Datenschutz in der Katastrophe. Anwendbarkeit, Systematik und Kompetenzfragen - Teil 1.Hornung, G.; Stroscher, J.-P. In Zeitschrift für das Gesamte Sicherheitsrecht, pp. 149–154. 2021.
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Generating Commonsense Ontologies with Answer Set Programming.Jakob, Stefan; Jahl, Alexander; Baraki, Harun; Geihs, Kurt. In Proceedings of the 13th International Conference on Agents and Artificial Intelligence. SciTePress, 2021.
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A Theory-Driven Design Science Research Agenda Towards Gamified Videos.Benner, Dennis; Schöbel, Sofia. In International Conference on Wirtschaftsinformatik (WI). Duisburg-Essen, Germany, 2021.
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Digitalization has opened new opportunities but also brought new challenges such as lower engagement of students in online training. Especially learning videos need to be changed in their design and structure to make them more engaging for users. So far, overarching design principles are missing that support the development of gamified learning videos. In our research in progress paper we present an overarching approach on how to develop meaningful gamified learning videos. With our design science research approach, we plan to derive design principles and design features from our state-of-the-art design requirements. Additionally, we will conduct a field experiment to put our theoretical contributions to test and gather practical insights. Our research contributes to theory, by clarifying how and why gamified videos can support better learning. In a long run, practical contributions can be given to developers about how to construct gamified learning videos.
What do you mean? A Review on Recovery Strategies to Overcome Conversational Breakdowns of Conversational Agents.Benner, Dennis; Elshan, Edona; Schöbel, Sofia; Janson, Andreas. In International Conference on Information Systems (ICIS). 2021.
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Since the emergence of conversational agents, this technology has seen continuous development and research. Today, advanced conversational agents are virtually omnipresent in our everyday lives. Albeit the numerous improvements in their conversational capabilities, breakdowns are still a persistent issue. Such breakdowns can result in a very unpleasant experience for users and impair the future success of conversational agents. This issue has been acknowledged by many researchers recently. However, the research on strategies to overcome conversational breakdowns is still inconclusive, and further research is needed. Therefore, we conduct a systematic literature analysis to derive conceptual conversational breakdown recovery strategies from literature and highlight future research avenues to address potential gaps. Thus, we contribute to theory of human-agent interaction by deriving and assessing recovery strategies and suggesting leads for novel recovery strategies.
Vergleich nationaler Akkreditierungsanforderungen nach Art. 43 Abs. 3 i.V.m. 57 Abs. 1 lit. p DS-GVO.Maier-Reinhardt, Natalie. In ZD-Aktuell, (8), p. 05169. 2021.
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Self-improving system integration: Mastering continuous change.Bellman, Kirstie; Botev, Jean; Diaconescu, Ada; Esterle, Lukas; Gruhl, Christian; Landauer, Christopher; Lewis, Peter R.; Nelson, Phyllis R.; Pournaras, Evangelos; Stein, Anthony; Tomforde, Sven. In Future Generation Computer Systems, 117, pp. 29–46. Elsevier, 2021.
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The research initiative “self-improving system integration” (SISSY) was established with the goal to master the ever-changing demands of system organisation in the presence of autonomous subsystems, evolving architectures, and highly-dynamic open environments. It aims to move integration-related decisions from design-time to run-time, implying a further shift of expertise and responsibility from human engineers to autonomous systems. This introduces a qualitative shift from existing self-adaptive and self-organising systems, moving from self-adaptation based on predefined variation types, towards more open contexts involving novel autonomous subsystems, collaborative behaviours, and emerging goals. In this article, we revisit existing SISSY research efforts and establish a corresponding terminology focusing on how SISSY relates to the broad field of integration sciences. We then investigate SISSY-related research efforts and derive a taxonomy of SISSY technology. This is concluded by establishing a research road-map for developing operational self-improving self-integrating systems.
Zurück in die Zukunft der Künstlichen Intelligenz. Elemente einer digitalen Anthropologie am Beispiel Spotifys.Kropf, Jonathan. In Theologie und Digitalität. Ein Kompendium, W. Beck, I. Nord, J. Valentin (eds.), pp. 50–72. Herder, Freiburg im Breisgau, 2021.
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Traffic Safety in Future Cities by Using a Safety Approach Based on AI and Wireless Communications.König, I.; Bachmann, M.; Bieshaar, M.; Schindler, S.; Lambrecht, F.; David, K.; Sick, B.; Hornung, G.; Sommer, C. In ITG-Symposium on Mobile Communication - Technologies and Applications, pp. 1–6. Osnabrück, Germany, 2021.
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Uncertainty and Utility Sampling with Pre-Clustering.Huang, Zhixin; He, Yujiang; Vogt, Stephan; Sick, Bernhard. In Workshop on Interactive Adaptive Learning (IAL), ECML PKDD. 2021.
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Perception of Peripheral Visual Cues in Augmented Reality During Walking: A Pilot Study.Faulhaber, A. K.; Schmidt, L. In Arbeit HUMAINE gestalten: 67. Kongress der Gesellschaft für Arbeitswissenschaft (Bochum 2021), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.5.6). GfA-Press, Dortmund, 2021.
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Augmented Reality (AR) glasses may be used in diverse mobile and multitasking contexts, for example, while walking. In such contexts, it is particularly important to display information without obscuring essential areas of central vision. Information can, thus, be presented to the peripheral vision. The objective of the present study was to investigate how peripheral visual cues should be displayed in AR to achieve efficient perception during walking. We conducted a pilot study and tested three different versions of directional cues presented while walking or standing still: simply popping up, moving towards the indicated direction, or changing color. The results indicated that the perception of peripheral cues in AR is generally less efficient while walking than standing still. Within the walking condition, the color-changing cue was perceived best.
Adaptive Semantic Routing in Dynamic Environments.Jakob, Stefan; Baraki, Harun; Jahl, Alexander; Chiadjeu, Eric Douglas Nyakam; Alhamwy, Yasin; Geihs, Kurt. In Proceedings of the 13th International Conference on Agents and Artificial Intelligence. SciTePress, 2021.
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scikit-activeml: A Library and Toolbox for Active Learning Algorithms.Kottke, Daniel; Herde, Marek; Minh, Tuan Pham; Benz, Alexander; Mergard, Pascal; Roghman, Atal; Sandrock, Christoph; Sick, Bernhard. In Preprints, p. 2021030194. 2021.
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Machine learning applications often need large amounts of training data to perform well. Whereas unlabeled data can be easily gathered, the labeling process is difficult, time-consuming, or expensive in most applications. Active learning can help solve this problem by querying labels for those data points that will improve the performance the most. Thereby, the goal is that the learning algorithm performs sufficiently well with fewer labels. We provide a library called scikit-activeml that covers the most relevant query strategies and implements tools to work with partially labeled data. It is programmed in Python and builds on top of scikit-learn.
Toward optimal probabilistic active learning using a Bayesian approach.Kottke, Daniel; Herde, Marek; Sandrock, Christoph; Huseljic, Denis; Krempl, Georg; Sick, Bernhard. In Machine Learning, 110(6), pp. 1199–1231. Springer, 2021.
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Gathering labeled data to train well-performing machine learning models is one of the critical challenges in many applications. Active learning aims at reducing the labeling costs by an efficient and effective allocation of costly labeling resources. In this article, we propose a decision-theoretic selection strategy that (1) directly optimizes the gain in misclassification error, and (2) uses a Bayesian approach by introducing a conjugate prior distribution to determine the class posterior to deal with uncertainties. By reformulating existing selection strategies within our proposed model, we can explain which aspects are not covered in current state-of-the-art and why this leads to the superior performance of our approach. Extensive experiments on a large variety of datasets and different kernels validate our claims.
Blockchain-based Task-centric Team Building.Jahl, Alexander; Jakob, Stefan; Baraki, Harun; Alhamwy, Yasin; Geihs, Kurt. In Proceedings of the 13th International Conference on Agents and Artificial Intelligence. SciTePress, 2021.
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Translatory and rotatory motion of exchange-bias capped Janus particles controlled by dynamic magnetic field landscapes.Huhnstock, Rico; Reginka, Meike; Tomita, Andreea; Merkel, Maximilian; Dingel, Kristina; Holzinger, Dennis; Sick, Bernhard; Vogel, Michael; Ehresmann, Arno. In Scientific Reports, 11(1), p. 21794. Nature Publishing Group, 2021.
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Magnetic Janus particles (MJPs), fabricated by covering a non-magnetic spherical particle with a hemispherical magnetic in-plane exchange-bias layer system cap, display an onion magnetization state for comparably large diameters of a few microns. In this work, the motion characteristics of these MJPs will be investigated when they are steered by a magnetic field landscape over prototypical parallel-stripe domains, dynamically varied by superposed external magnetic field pulse sequences, in an aqueous medium. We demonstrate, that due to the engineered magnetization state in the hemispherical cap, a comparably fast, directed particle transport and particle rotation can be induced. Additionally, by modifying the frequency of the applied pulse sequence and the strengths of the individual field components, we observe a possible separation between a combined or an individual occurrence of these two types of motion. Our findings bear importance for lab-on-a-chip systems, where particle immobilization on a surface via analyte bridges shall be used for low concentration analyte detection and a particle rotation over a defined position of a substrate may dramatically increase the immobilization (and therefore analyte detection) probability.
The Effect of Explanations on Trust in an Assistance System for Public Transport Users and the Role of the Propensity to Trust.Faulhaber, A. K.; Ni, I.; Schmidt, L. In Mensch und Computer 2021 - Tagungsband (Ingolstadt 2021), S. Schneegass, B. Pfleging, D. Kern (eds.), pp. 303–310. ACM, New York, 2021.
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The present study aimed to investigate whether explanations increase trust in an assistance system. Moreover, we wanted to take the role of the individual propensity to trust in technology into account. We conducted an empirical study in a virtual reality environment where 40 participants interacted with a specific assistance system for public transport users. The study was in a 2x2 mixed design with the within-subject factor assistance system feature (trip planner and connection request) and the between-subject factor explanation (with or without). We measured trust as explicit trust via a questionnaire and as implicit trust via an operationalization of the participants’ behavior. The results showed that trust propensity predicted explicit trust, and explanations increased explicit trust significantly. This was not the case for implicit trust, though, suggesting that explicit and implicit trust do not necessarily coincide. In conclusion, our results complement the literature on explainable artificial intelligence and trust in automation and provide topics for future research regarding the effect of explanations on trust in assistance systems or other technologies.
Social Machines.Draude, Claude; Gruhl, Christian; Hornung, Gerrit; Kropf, Jonathan; Lamla, Jörn; Leimeister, Jan Marco; Sick, Bernhard; Stumme, Gerd. In Informatik Spektrum. 2021.
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Konsum.Lamla, Jörn; Roschka, Jakob. In Handbuch Politische Soziologie, M. Endreß, B. Rampp (eds.). Nomos, Baden-Baden, 2021.
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LEGIT Methodology: Towards Capturing Legal Compatibility of Design Science Artifacts.Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In International Conference on Design Science Research in Information Systems and Technology (DESRIST), Vol. 12807, L. Chandra Kruse, S. Seidel, G. I. Hausvik (eds.), pp. 293–298. Lecture Notes in Computer Science (Spring Cham), Kristiansand, Norway, 2021.
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Higher legal standards with regards to the data protection of individu-als such as the General Data Protection Regulation (GDPR) are increasing the pressure on developers of IT artifacts. Typically, when developing systems, we subsequently evaluate them with users to elaborate aspects such as user experi-ence perceptions. However, nowadays, other evaluation aspects such as legality and data policy issues are also important criteria for system development. For this purpose, we introduce LEGIT (legal design science evaluation), which pro-vides developers with guidance when considering legal requirements. We use the case of the GDPR to illustrate the feasibility, applicability, and benefit to the de-velopment process. With this novel method adapted from law research, we are able to derive actionable guidance for developers to evaluate developer efforts in increasing legal compatibility. To illustrate our methodological approach, in this paper, we describe the key steps of the method with respect to the evaluation of a learning assistant. We develop an AI-based learning assistant for university stu-dents to demonstrate the application of the novel evaluation method. We briefly discuss how this procedure can serve as the foundation for a new evaluation method of legally compatible systems in design science research.
Legal Challenges of an Open Web Index.Geminn, Christian; Erenli, Kai; Pfeiffer, Leon. In International Cybersecurity Law Review, pp. 183–194. 2021.
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Die symbolischen Ordnungen des Konsums – und die Fallstricke produktivistischer Soziologie.Lamla, Jörn. In Capitalism unbound. Ökonomie, Ökologie, Kultur., S. Lenz, M. Hasenfratz (eds.), pp. 283–299. Campus, Frankfurt/Main; New York, 2021.
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LG Bonn: Authentifizierung im telefonischen Kontakt mit Kundencentern – 1&1.Geminn, Christian; Johannes, P. In MultiMedia und Recht, pp. 173–177. 2021.
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Anomaly based Resilient Network Intrusion Detection using Inferential Autoencoders.Hannan, Abdul; Gruhl, Christian; Sick, Bernhard. In IEEE International Conference on Cyber Security and Resilience (CSR), pp. 1–7. IEEE, 2021.
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Towards Highly Automated Machine-Learning-Empowered Monitoring of Motor Test Stands.Botache, Diego; Bethke, Florian; Hardieck, Martin; Bieshaar, Maarten; Brabetz, Ludwig; Ayeb, Mohamed; Zipf, Peter; Sick, Bernhard. In IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS), pp. 120–130. IEEE, Washington, DC, USA, 2021.
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Kommentierung von § 45 (Datenverarbeitung zu wissenschaftlichen oder historischen Forschungszwecken, archivarischen oder statistischen Zwecken) HDSIG.Geminn, Christian; Johannes, P. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos, Baden-Baden, 2021.
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Forum Privatheit: Renommiertes Forschungsprojekt wird verlängert und deutlich ausgebaut.Geminn, Christian; Ferrarese, Barbara; Friedewald, Michael; Bile, Tamer. In ZD-Aktuell, p. 05168. 2021.
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“All Names Are Pseudonyms”: A Critical Reflection on Pseudonymizing Names in HCI: “All Names Are Pseudonyms.”. Dankwa, Nana Kesewaa. In CHI EA ’21: Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems, pp. 1–6. Association for Computing Machinery, New York, NY, USA, 2021.
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A person's name embodies identity. During user studies in Human Computer Interaction (HCI), persons are often renamed (pseudonymization) to hide their identity for privacy and ethical reasons. Pseudonymization occurs mostly as a “silent” affair of due diligence. Researchers barely give substantial information to the process nor reveal a reflexive position nor acknowledge the underlying elements of power and identity negotiation. As HCI advances in mitigating the design of biased technologies and breaking oppressive structures, I argue, in this paper, the need for the field to re-consider research requirements such as pseudonymization as possible to embody oppressive structures and erase identity. I present a review of papers from the 2020 CHI Conference on Human Factors in Computing Systems (CHI ‘20) that illustrate how silent the HCI approach is. My argument is built on Critical Race Theory, questioning the objectivity of such technical requirements. I use personal narratives to bolster this argument, ending with a call to the HCI community to acknowledge the power and privilege in renaming participants with three recommendations for consideration.
Value Co-Creation in Smart Services: A Functional Affordances Perspective on Smart Personal Assistants.Knote, Robin; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Journal of the Association for Information Systems, 22(2), pp. 418–458. 2021.
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In the realm of smart services, smart personal assistants (SPAs) have become a popular medium for value co-creation between service providers and users. The market success of SPAs is largely based on their innovative material properties, such as natural language user interfaces, machine-learning-powered request handling and service provision, and anthropomorphism. In different combinations, these properties offer users entirely new ways to intuitively and interactively achieve their goals and, thus, co-create value with service providers. But how does the nature of the SPA shape value co-creation processes? In this paper, we look through a functional affordances lens to theorize about the effects of different types of SPAs (i.e., with different combinations of material properties) on users' value co-creation processes. Specifically, we collected SPAs from research and practice by reviewing scientific literature and web resources, developed a taxonomy of SPAs' material properties, and performed a cluster analysis to group SPAs of a similar nature. We then derived 2 general and 11 cluster-specific propositions on how different material properties of SPAs can yield different affordances for value co-creation. With our work, we point out that smart services require researchers and practitioners to fundamentally rethink value co-creation as well as revise affordances theory to address the dynamic nature of smart technology as a service counterpart.
Erfolgreicher Abschluss des Forschungsprojekts ‚Forum Privatheit: Selbstbestimmtes Leben in einer digitalen Welt.Geminn, Christian; Bile, Tamer. In ZD-Aktuell, p. 05139. 2021.
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Abwägung zur Sicherheit der Datenverarbeitung durch technische und organisatorische Maßnahmen – Zur Schwierigkeit der Bestimmung des ausreichenden datenschutzrechtlichen Schutzniveaus.Geminn, Christian; Johannes, P. In InTeR – Zeitschrift für Innovations- und Technikrecht, pp. 140–146. 2021.
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Setting Diversity at the Core of HCI.Dankwa, Nana Kesewaa; Draude, Claude. In Universal Access in Human-Computer Interaction. Design Methods and User Experience, Vol. 12768 of Lecture Notes in Computer Science, M. Antona, C. Stephanidis (eds.), pp. 39–52. Springer International Publishing, Cham, 2021.
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The advancing awareness of diversity in HCI is touted as laudable in addressing inequality and the digital divide. This progress however has not been reflected in HCI research. Diversity in HCI has focused on giving underrepresented users voice and confronting homogeneity. By increasing representations, though a diversity affinity is immediately visible, the deconstruction of institutionalized prejudice fails. Additionally, underrepresented voices have the unsurmountable task of representing their group. These approaches to diversity become tokenistic fixes failing to tackle the systemic causes of inequality.
Position Paper on the proposals for a Digital Services Act, a Digital Markets Act and a Data Governance Act. Geminn, Christian; Antonio, José; Parrilla, Castillo. Open Search Foundation, 2021.
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Einführung in die Wirtschaftsinformatik. Leimeister, Jan Marco. 13th ed. Springer Gabler, Germany, Berlin/Heidelberg, 2021.
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Das Buch gibt eine fundierte und praxisbezogene Einführung in das Gesamtgebiet der Wirtschaftsinformatik. Aufbauend auf den bewährten Vorgängerauflagen von Stahlknecht und Hasenkamp wurde die 13. Auflage komplett überarbeitet, strukturell weiterentwickelt und aktualisiert. Die Schwerpunkte umfassen u.a. Datenmanagement, Big Data, Analytics und Systementwicklung, Digital Business, Digitale Transformation, IT-Management sowie IT-Anwendungssysteme.
Rechtsfragen eines offenen Web-Index – Freiheitsfördernde Infrastrukturen für die digitale Gesellschaft.Geminn, Christian. In MultiMedia und Recht, pp. 16–19. 2021.
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Toward Application of Continuous Power Forecasts in a Regional Flexibility Market.He, Yujiang; Huang, Zhixin; Sick, Bernhard. In International Joint Conference on Neural Networks (IJCNN), pp. 1–8. IEEE, 2021.
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Political Sociology.Lamla, Jörn. In The state of sociology in the German-speaking world, Vol. Special Issue Soziologische Revue 2020, B. Hollstein, R. Greshoff, U. Schimank, A. Weiß (eds.), pp. 287–300. de Gruyter Verlag, Berlin, 2021.
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Design Pattern as a Bridge Between Problem-Space and Solution-Space.Leimeister, Jan Marco; Dickhaut, Ernestine; Janson, Andreas. In Engineering the Transformation of the Enterprise - A Design Science Research Perspective, S. Aier, P. Rohner, J. Schelp (eds.), pp. 137–150. Springer, Cham, Switzerland, 2021.
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Designing novel technologies provide challenges to developers. To support developers in designing these technologies, design knowledge must be codified and made applicable for the future. In systems development, design patterns provide proven solutions to solving recurring problems. They contain templates for describing design information, often in tabular form, and are established tools for making complex knowledge accessible and applicable. Design patterns play a critical role in both practice and research in finding potential solutions. For researchers, patterns can provide a method for codifying design knowledge for future research. For practitioners, design patterns provide established solutions to recurring problems. By applying them in a particular context, the pattern represents elements of both the problem-space and the solution-space, providing an opportunity to bridge the gap between the two spaces. Due to the abstraction of design patterns, they can be used for different application scenarios. The preparation of the design knowledge in the design pattern is a critical step to support the user in the best possible way, that determines the usefulness of the pattern.
Kritische Bewertungskompetenzen. Selbstbestimmtes Verbraucherhandeln in KI-gestützten IT-Infrastrukturen. Lamla, Jörn. JFF – Jugend Film Fernsehen e. V., 2021.
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CLeaR: An adaptive continual learning framework for regression tasks.He, Yujiang; Sick, Bernhard. In AI Perspectives, 3(1), p. 2. Springer, 2020.
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Catastrophic forgetting means that a trained neural network model gradually forgets the previously learned tasks when being retrained on new tasks. Overcoming the forgetting problem is a major problem in machine learning. Numerous continual learning algorithms are very successful in incremental learning of classification tasks, where new samples with their labels appear frequently. However, there is currently no research that addresses the catastrophic forgetting problem in regression tasks as far as we know. This problem has emerged as one of the primary constraints in some applications, such as renewable energy forecasts. This article clarifies problem-related definitions and proposes a new methodological framework that can forecast targets and update itself by means of continual learning. The framework consists of forecasting neural networks and buffers, which store newly collected data from a non-stationary data stream in an application. The changed probability distribution of the data stream, which the framework has identified, will be learned sequentially. The framework is called CLeaR (Continual Learning for Regression Tasks), where components can be flexibly customized for a specific application scenario. We design two sets of experiments to evaluate the CLeaR framework concerning fitting error (training), prediction error (test), and forgetting ratio. The first one is based on an artificial time series to explore how hyperparameters affect the CLeaR framework. The second one is designed with data collected from European wind farms to evaluate the CLeaR framework's performance in a real-world application. The experimental results demonstrate that the CLeaR framework can continually acquire knowledge in the data stream and improve the prediction accuracy. The article concludes with further research issues arising from requirements to extend the framework.
Towards Corner Case Detection by Modeling the Uncertainty of Instance Segmentation Networks.Heidecker, Florian; Hannan, Abdul; Bieshaar, Maarten; Sick, Bernhard. In Workshop on Integrated Artificial Intelligence in Data Science, ICPR, pp. 361–374. IEEE, Milan, Italy, 2021.
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Kultur.Lamla, Jörn. In In Gesellschaft Richard Sennetts. Perspektiven auf ein Lebenswerk, S. Lorenz (ed.), pp. 69–82. transcript Verlag, Bielefeld, 2021.
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Critical Tools for Machine Learning: Situating, Figuring, Diffracting, Fabulating Machine Learning Systems Design.Klumbyte, Goda; Draude, Claude; Taylor, Alex. In CHItaly 2021: 14th Biannual Conference of the Italian SIGCHI Chapter, of CHItaly ’21. Association for Computing Machinery, Bolzano, Italy, 2021.
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This workshop draws on feminist and other critical methodologies to construct interdisciplinary interventions in the design of machine learning systems. Theoretical concepts of “figuration”, “situating/situated knowledge”, “critical fabulation/speculation,” and “diffraction” are explored through hands-on experimentation to imagine and design machine learning systems in a more situated, inclusive, contextualize and accountable way. Through this “theory turned practice” approach the workshop aims to address systemic socio-cultural biases and develop more socially responsible frameworks of design. The workshop provides space for building a network for future research on interdisciplinary machine learning systems design.
OHODIN -- Online Anomaly Detection for Data Streams.Gruhl, Christian; Tomforde, Sven. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 193–197. IEEE, 2021.
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Digitalisierung und Demokratie. Stellungnahme. Buchmann, Johannes; Hofmann, Jeanette; Simon, Judith; Anderl, Reiner; André, Elisabeth; Bäcker, Matthias; Breiter, Andreas; Dienlin, Tobias; Faas, Thorsten; Hepp, Andreas; Hertwig, Ralph; Herzog, Lisa; Kreuter, Frauke; Lamla, Jörn; Lengauer, Thomas; Löw, Martina; Pfetsch, Barbara; Spieker gen. Döhmann, Indra; Zürn, Michael; Geisse, Jens; Helmer, Joschua; Lorenz-Spreen, Philipp; Steinicke, Henning; Witt, Elke. Nationale Akademie der Wissenschaften Leopoldina; acatech – Deutsche Akademie der Technikwissenschaften; Union der deutschen Akademien der Wissenschaften, 2021.
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Digitalisierung geschlechtergerecht gestalten - Das Zusammenspiel von Gleichstellung und Datenschutzrecht.Gilga, Carolin. In ZD-Aktuell, p. 05137. 2021.
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AIFER: KI zur Analyse und Fusion von Erdbeobachtungs- und Internetdaten zur Unterstützung bei der Lageerfassung und -einschätzung.Gilga, Carolin. In ZD-Aktuell, p. 05218. 2021.
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Automatisierte Kennzeichenerfassung in der Strafverfolgung - aktueller Regierungsentwurf.Gilga, Carolin. In ZD-Aktuell, p. 05041. 2021.
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Getting a Handle on Critical Pedagogies: Notes on Interdependencies and Care in Interdisciplinary Technoscience.Britton, Loren; Klumbytė, Goda; Draude, Claude; Paehr, Isabel. In Gendered Configurations of Humans and Machines, Vol. 8, J. Büssers, A. Faulhaber, M. Raboldt, R. Wiesner (eds.), pp. 265–281. Barbara Budrich, 2021.
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The Problem with Real-World Novelty Detection -- Issues in Multivariate Probabilistic Models.Gruhl, Christian; Hannan, Abdul; Huang, Zhixin; Nivarthi, Chandana; Vogt, Stephan. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 204–209. IEEE, 2021.
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Können Kinder aufgeklärte Nutzer*innen von Sprachassistenten sein? – Rechtliche, psychologische, ethische und informatische Perspektiven.Geminn, Christian; Szczuka, Jessica; Artelt, André; Hammer, Barbara; Manzeschke, Arne; Roßnagel, Alexander; Slawik, Pauline; Strathmann, Clara; Szymczyk, Natalie; Varonina, Lina; Weber, Carina. Vol. Schriftenreihe KI-basierte Sprachassistenten im Alltag, p. 22. Universität Duisburg-Essen, 2021.
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Novelty detection in continuously changing environments.Gruhl, Christian; Sick, Bernhard; Tomforde, Sven. In Future Generation Computer Systems, 114, pp. 138–154. Elsevier, 2021.
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Self-improving system integration (SISSY) aims at mastering the challenges of system organisation decisions for subsystems with highly dynamic behaviours. This is achieved by increased decision freedom of these subsystems, i.e., by moving the corresponding design decisions from design-time to run-time and from engineers to the systems themselves. As a result, a more robust and efficient constellation of the overall system organisation is maintained even under the presence of continuous change and disturbed conditions. Appropriate integration decisions require a solid foundation of assessing the current conditions and their dynamics using identifying triggers for a necessary evaluation of their own integration status. With this article, we present mCANDIES, a modular novelty detection technique especially suited for SISSY systems that fulfils exactly these identification tasks. mCANDIES tackles an anomaly or novelty detection problem in a modular way by combining the advantages of different detection approaches by exploiting locality in different regions of the input space — depending on, e.g. the density or location of expected observations. This is augmented with information about changes in the underlying model of the observations, i.e., mCANDIES identifies concept drifts. The corresponding information can then be used to trigger online learning behaviour. We analyse the behaviour of mCANDIES on artificial and real-world data sets and compare it to other techniques from the state of the art.
Die Informationspräsentation im Datenschutzrecht – Auf der Suche nach Lösungen.Geminn, Christian; Leon, Francis; Karl-Raban, Herder. In ZD-Aktuell, (14), p. 05335. 2021.
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Exploring the Impact of Crowd Members’ Motivation on Idea Quality in Online Innovation Communities.Bretschneider, Ulrich. In Annual Meeting of the Academy of Management (AOM). 2021.
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Since many years, several firms host Virtual Idea Communities (VIC), in which the crowd focuses on voluntarily developing ideas for new product development (NPD). Both, scholars and practitioners share a strong interest in understanding the factors that enhance crowd members’ individual ideation outcome, meaning the quality of ideas, since the value of user ideas is not only essential for the survival of a VIC, but it also directly affects the innovation effects of firm’s NPD. Although there exist first insights on what influences idea quality, empirical studies that provide evidence of which forms of crowd members motivations are positively linked to higher ideation outcome are neglected. In this research, we build a theoretical model explaining which motives of crowd members for engaging in ideation have a positive impact on the quality of ideas they developed. To test our theory, we employed empirical data from users of the VIC by the software manufacturer SAP. For the first time, we found that crowd members of VIC are motivated to send capability signals through their ideas and thus be more creative. Further, crowd members with higher levels of fun and learning motivation produce ideas of higher quality, whereas this association depends on their level of flow experience. Our empirical results provide important contributions to IS research and practice. On the basis of our findings it is possible to design socio-technical artefacts for VICs that stimulate users’ capability-, fun- and learning motives and in turn will lead to ideas of higher quality.
Formal Concept Analysis - 16th International Conference, ICFCA 2021, Strasbourg, France, June 29 - July 2, 2021, Proceedings. Braud, Agnès; Buzmakov, Aleksey; Hanika, Tom; Ber, Florence Le. In Vol. 12733 of Lecture Notes in Computer Science. Springer, 2021.
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Alexa, are you still there? Understanding the Habitual Use of AI-Based Voice Assistants.Grünenfelder, Janay Ilya; Zierau, Naim; Janson, Andreas. In International Conference on Information Systems (ICIS). 2021.
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Voice assistants are a novel class of information systems that fundamentally change human–computer interaction. Although these assistants are widespread, the utilization of these information systems is oftentimes only considered on a surface level by individuals. In addition, prior research has focused predominantly on initial use instead of looking deeper into post-adoption and habit formation. In consequence, this paper reviews how the notion of habit has been conceptualized in relation to biographical utilization of voice assistants and presents findings based on a qualitative study approach. From a perspective of post-adoption users, the study suggests that existing habits persist, and new habits hardly ever form in the context of voice assistant utilization. This paper outlines four key factors that help explain voice assistant utilization behavior and furthermore provides practical implications that help to ensure continued voice assistant use in the future.
Iterative Label Improvement: Robust Training by Confidence Based Filtering and Dataset Partitioning.Haase-Schütz, Christian; Stal, Rainer; Hertlein, Heinz; Sick, Bernhard. In International Conference on Pattern Recognition (ICPR), pp. 9483–9490. IEEE, 2021.
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Eating ourselves out of industrial excess? Degrowth, multi-species conviviality and the micro-politics of cultured meat.Lamla, Jörn; Gertenbach, Lars; Laser, Stefan. In Anthropological Theory, 21(3), pp. 386–408. 2021.
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Connected Self-Organized Citizens in Crises: An Interdisciplinary Resilience Concept for Neighborhoods.Haesler, S.; Mogk, R.; Putz, F.; Logan, K. T.; Thiessen, N.; Kleinschnitger, K.; Baumgärtner, L.; Stroscher, J.-P.; Reuter, C.; Knodt, M.; Hollick, M. In CSCW ’21: Companion Publication of the 2021 Conference on Computer Supported Cooperative Work and Social Computing, pp. 62–66. 2021.
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Who Cares for Agile Work? In/Visiblized Work Practices and their Emancipatory Potentials.Coban, Alev; Wenten, Klara-Aylin. In Nanoethics, 15, pp. 15–70. 2021.
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Privatheit und Digitalität. Zur soziotechnischen Transformation des selbstbestimmten Lebens.Lamla, Jörn; Büttner, Barbara; Ochs, Carsten; Pittroff, Fabian; Uhlmann, Markus. In Die Zukunft von Privatheit und Selbstbestimmung. Analysen und Empfehlungen zum Schutz der Grundrechte in der digitalen Welt, A. Roßnagel, M. Friedewald (eds.). Springer Vieweg, Wiesbaden, 2021.
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Graph-Based Representation and Reasoning - 26th International Conference on Conceptual Structures, ICCS 2021, Virtual Event, September 20-22, 2021, Proceedings. Braun, Tanya; Gehrke, Marcel; Hanika, Tom; Hernandez, Nathalie. In Vol. 12879 of Lecture Notes in Computer Science. Springer, 2021.
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Quantifying the Conceptual Error in Dimensionality Reduction.Hanika, Tom; Hirth, Johannes. In Graph-Based Representation and Reasoning - 26th International Conference on Conceptual Structures, ICCS 2021, Virtual Event, September 20-22, 2021, Proceedings, Vol. 12879 of Lecture Notes in Computer Science, T. Braun, M. Gehrke, T. Hanika, N. Hernandez (eds.), pp. 105–118. Springer, 2021.
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Exploring Scale-Measures of Data Sets.Hanika, Tom; Hirth, Johannes. In Formal Concept Analysis - 16th International Conference, ICFCA 2021, Strasbourg, France, June 29 - July 2, 2021, Proceedings, Vol. 12733 of Lecture Notes in Computer Science, A. Braud, A. Buzmakov, T. Hanika, F. L. Ber (eds.), pp. 261–269. Springer, 2021.
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Quo Vadis Conferences in the Business and Information Systems Engineering (BISE) Community After Covid: What Can Stay, What Should Go, What Do We Need to Change for Our Future Scientific Conferences?Leimeister, Jan Marco; Stieglitz, Stefan; Matzner, Martin; Kundisch, Dennis; Flath, Christoph; Röglinger, Maximilian. In Business & Information Systems Engineering (BISE), 63(6), pp. 741–749. 2021.
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The global Covid-19 pandemic has not only influenced the way we work and collaborate on our research but also how we present and exchange novel contributions at scientific conferences. Governmental lockdowns and (inter)-national travel restrictions have forced conference organizers to move from offline conference venues to virtual platforms quickly. Our discipline, the Business & Information Systems Engineering (BISE) community, is an interdisciplinary field involving the more conference-driven computer sciences and the more journal-oriented social science. Thus, the impact of Covid-19 on—and the (needed) experience with—new conference formats require a differentiated discourse on the role of the future of our scientific conferences. Hence, we aim to contribute to a discussion on (1) what can stay offline / as on-site conference formats, (2) what we can learn from the experience with (new) online formats, and (3) what do we need for our future scientific conferences in the BISE community?
The Hidden Value of Patterns – Using Design Patterns to Whitebox Technology Development in Legal Assessments.Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In International Conference on Wirtschaftsinformatik (WI), of The Hidden Value of Patterns – Using Design Patterns to Whitebox Technology Development in Legal Assessments. University of Duisburg-Essen, Germany, 2021.
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Higher legal standards with regards to data protection of individuals such as the European General Data Protection Regulation (GDPR) increase the pressure on developing lawful technologies. The development requires feedback from stakeholders such as legal experts that lack technical knowledge but are required to understand IT artifacts. As a solution, patterns can support interdisciplinary system development. We demonstrate how interdisciplinary patterns can support legal experts in arguing about technologies in court by introducing a law simulation study which is a well-known evaluation method in law. Our results show that patterns support legal experts in their argumentation about technologies in court. We provide theoretical contributions concerning cognitive fit theory about how patterns act as a bridge between the internal and external representation of problems and improve problem-solving performance related to the legal assessment of technology. In addition, we provide practical guidance for codifying and communicating design knowledge through patterns.
A Survey on Cost Types, Interaction Schemes, and Annotator Performance Models in Selection Algorithms for Active Learning in Classification.Herde, Marek; Huseljic, Denis; Sick, Bernhard; Calma, Adrian. In IEEE Access, 9, pp. 166970–166989. IEEE, 2021.
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Pool-based active learning (AL) aims to optimize the annotation process (i.e., labeling) as the acquisition of annotations is often time-consuming and therefore expensive. For this purpose, an AL strategy queries annotations intelligently from annotators to train a high-performance classification model at a low annotation cost. Traditional AL strategies operate in an idealized framework. They assume a single, omniscient annotator who never gets tired and charges uniformly regardless of query difficulty. However, in real-world applications, we often face human annotators, e.g., crowd or in-house workers, who make annotation mistakes and can be reluctant to respond if tired or faced with complex queries. Recently, many novel AL strategies have been proposed to address these issues. They differ in at least one of the following three central aspects from traditional AL: 1) modeling of (multiple) human annotators whose performances can be affected by various factors, such as missing expertise; 2) generalization of the interaction with human annotators through different query and annotation types, such as asking an annotator for feedback on an inferred classification rule; 3) consideration of complex cost schemes regarding annotations and misclassification. This survey provides an overview of these AL strategies and refers to them as real-world AL. Therefore, we introduce a general real-world AL strategy as part of a learning cycle and use its elements, e.g., the query and annotator selection algorithm, to categorize about 60 real-world AL strategies. Finally, we outline possible directions for future research in the field of AL.
Kommentierung von Art. 24 (Videoüberwachung) und 27 (Staatliche und kommunale Auszeichnungen und Ehrungen) BayDSG.Geminn, Christian. In Bayerisches Datenschutzgesetz, M. Schröder (ed.). Nomos, Baden-Baden, 2021.
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CrowdServ – Konzept für ein hybrides Entscheidungsunterstützungssystem zur Validierung von Geschäftsmodellen.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In Dienstleistungsinnovationen durch Digitalisierung, Vol. Band 2: Prozesse ‐ Transformation ‐ Wertschöpfungsnetzwerke, D. Beverungen, J. H. Schumann, V. Stich, G. Strina (eds.), pp. 291–331. Springer Gabler, Germany, Berlin/Heidelberg, 2021.
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Eine der kritischsten Aufgaben für Start-ups ist die Validierung ihres Geschäftsmodells. Daher versuchen Gründer, Informationen wie z. B. Feedback von anderen Akteuren zu sammeln, um die Gültigkeit ihrer Annahmen zu bewerten und Entscheidungen zu treffen. Bisherige Arbeiten über Entscheidungshilfen für die Validierung von Geschäftsmodellen bieten jedoch keine Lösung für den höchst unsicheren und komplexen Kontext von Start-ups in der Frühphase. Der Zweck dieser Studie ist daher die Entwicklung von Entwurfsprinzipien für ein hybrides Entscheidungsunterstützungssystem (HIDSS), das die komplementären Fähigkeiten von menschlicher und maschineller Intelligenz kombiniert. Wir verfolgen einen gestaltungsorientierten Forschungsansatz, um ein Prototyp-Artefakt und eine Reihe von Designprinzipien zu entwerfen. Unsere Studie liefert präskriptives Wissen für HIDSS und trägt zu früheren Arbeiten über Entscheidungsunterstützung für Geschäftsmodelle, über die Anwendung der komplementären Stärken von Mensch und Maschine zur Entscheidungsfindung und über Unterstützungssysteme für extrem unsichere Entscheidungsprobleme bei.
Getting credit for proactivity? The effects of gender.Hernandez Bark, Alina S.; Seliverstova, K.; Ohly, S. In Journal of Applied Social Psychology. 2021.
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Deus ex machina? – Grundrechte und Digitalisierung. Habilitationsschrift. Geminn, C. Universität Kassel, 2021.
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Multi-annotator Probabilistic Active Learning.Herde, Marek; Kottke, Daniel; Huseljic, Denis; Sick, Bernhard. In International Conference on Pattern Recognition (ICPR), pp. 10281–10288. IEEE, 2021.
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Augmented-Reality-basierte Assistenz für das Anlernen manueller und roboterunterstützter Montageprozesse.Hegenberg, J.; Schmidt, L. In Zeitschrift für Arbeitswissenschaft, 75(4), pp. 367–387. 2021.
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Durch eine zunehmend flexibilisierte Produktion und relativ hohe Personalfluktuation bei einfachen Tätigkeiten wird das Anlernen neuer Mitarbeitender bzw. für neue oder geänderte Produktionsprozesse zunehmend relevanter. Konventionelle Anlernmethoden, bspw. durch Demonstration oder Arbeitspläne, haben Schwächen (bspw. binden sie zusätzliche Arbeitskraft oder sind kognitiv anspruchsvoll), die durch ein Augmented-Reality-(AR-)basiertes Assistenzsystem kompensiert werden können. Ein AR-Assistenzsystem zum Anlernen eines tatsächlichen industriellen Montageprozesses wurde in einer vergleichenden Studie mit 16 Versuchspersonen gegenüber einer konventionellen Papieranleitung evaluiert. Bzgl. Gebrauchstauglichkeit und Beanspruchung deuten sich die Stärken des AR-Ansatzes an. In den Subskalen Anstrengung und Frustration zeigt sich eine statistisch signifikante Reduktion der Beanspruchung. Bezüglich der Montagezeiten konnten statistisch signifikante Vorteile erzielt werden. Ergänzend wurde in einer zweiten Studie eine Videoanleitung mit der AR-Anleitung verglichen. Praktische Relevanz: Die Digitalisierung der Produktion erlaubt nach Kundenwunsch individualisierte Produkte, die mit einer flexibilisierten Produktion einhergehen. Einfache Montageprozesse ändern sich daher häufiger vollständig oder in Teilen. Außerdem wechseln Mitarbeitende aufgrund der monotonen und repetitiven Tätigkeiten häufiger. All das führt zu einem Bedarf an regelmäßigen Anlernprozessen. Ein AR-Assistenzsystem erscheint als aussichtsreicher Ansatz, wobei die Gebrauchstauglichkeit besonders im Fokus stehen sollte, da wenig technische Kenntnisse vorausgesetzt werden können.
How Data Analytics Competencies Can Foster Business Value – A Systematic Review and Way Forward.Klee, Sven; Janson, Andreas; Leimeister, Jan Marco. In Information Systems Management (ISM), 38(3), pp. 200–217. 2021.
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Several authors have illustrated the benefits of data in organizations. For realizing benefits, we see two major challenges for organizations. First, there are necessary investments, which have to be justified. Second, adequate data analytics competencies can be seen as enablers for realizing benefits. We aim to support organizations by showing relevant competencies and achievable business values. We present theoretical propositions and a research agenda on how to move the field of data analytics competencies forward.
Kanada: Digital Charter Implementation Act.Geminn, Christian. In Zeitschrift für Datenschutz, p. XVII-XVIII. 2021.
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Die Regulierung Künstlicher Intelligenz – Anmerkungen zum Entwurf eines Artificial Intelligence Act.Geminn, Christian. In Zeitschrift für Datenschutz, pp. 354–359. 2021.
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Fairness und Transparenz im Datenschutzrecht.Geminn, Christian. In ZD-Aktuell, (20), p. 05557. 2021.
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Japan: Nach der Reform ist vor der Reform.Geminn, Christian. In Zeitschrift für Datenschutz, (1), p. XI-XII. 2021.
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Kommentierung von § 24 (Datenverarbeitung zu wissenschaftlichen oder historischen Forschungszwecken und zu statistischen Zwecken), § 28a (Datenverarbeitung bei öffentlichen Auszeichnungen und Ehrungen), § 28b (Datenverarbeitung in Gnadenverfahren) und §§ 80 bis 89 (Informationsfreiheit) HDSIG.Geminn, Christian. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos, Baden-Baden, 2021.
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Gelebte Demokratie in der Stadt der Zukunft – Entwicklung einer digitalen Bürgerbeteiligungsplattform.Billert, Matthias; Peters, Christoph. In Kursbuch Bürgerbeteiligung #4, J. Sommer (ed.), pp. 364–376. 2021.
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Um die Lebensverhältnisse der Bürger*innen in Städten zu verbessern, sollen diese als Expert*innen ihres Alltags eingebunden werden. Jedoch finden städtische Angebote oftmals bei Bürger*innen keinen Anklang und umgekehrt kämpfen Bürgerinitiativen um die Aufmerksamkeit und Unterstützung von Städten. Um diese Lücke zu schließen, wurde eine digitale Bürgerbeteiligungsplattform in einer deutschen Großstadt etabliert. Sie unterstützt Bürger*innen bei ihren Anliegen und bietet Städten die Möglichkeit, bürger-initiierte Beiträge niederschwellig zu überprüfen und bereitzustellen. Mit dem anschließenden demokratischen Abstimmungsprozess handelt es sich um ein Stück gelebte Demokratie.
Smart Infrastructure: A Research Junction.Hetzel, Manuel; Reichert, Hannes; Doll, Konrad; Sick, Bernhard. In IEEE International Smart Cities Conference (ISC2). IEEE, 2021.
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Datenschutz bei Sprachassistenten – Herausforderungen heute und morgen.Geminn, Christian. In Datenschutz und Datensicherheit, pp. 509–514. 2021.
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Proximity Dimensions and the Emergence of Collaboration: A HypTrails Study on German AI Research.Koopmann, T.; Stubbemann, M.; Kapa, M.; Paris, M.; Buenstorf, G.; Hanika, T.; Hotho, A.; Jäschke, R.; Stumme, G. In Scientometrics, 126(12), pp. 9847–9868. 2021.
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Gestensteuerungen zur teleoperierten Navigation von Servicerobotern. Herrmann, R. In Vol. 1 of Schriftenreihe Mensch-Maschine-Systemtechnik. Kassel University Press, Kassel, 2021.
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Forscher versprechen sich durch die Verwendung von natürlichen Benutzungsschnittstellen eine Verbesserung der Mensch-Roboter-Interaktion gegenüber den konventionellen Eingabeparadigmen, die Joysticks, Mäuse oder Tastaturen verwenden. Gestensteuerungen, als eine Ausprägung von natürlichen Benutzungsschnittstellen, werden daher enorme Potenziale zugeschrieben. Aber ist dies gerechtfertigt? Rund um diese Frage ist eine Diskussion in der Wissenschaft entstanden. Auf der einen Seite gibt es Forscher, die versprechen, durch Gestensteuerungen konventionelle Eingabegeräte ersetzen zu können, auf der anderen Seite gibt es aber auch Forscher, die auf die Defizite von Gestensteuerungen hinweisen und deren Verwendung eher kritisch sehen. Die hier vorliegende Arbeit soll zu dieser Diskussion beitragen. Sie dokumentiert einerseits die vorhandenen Erkenntnisse über die Gebrauchstauglichkeit von Gestensteuerungen und andererseits Erkenntnisse über den gebrauchstauglichen Einsatz von Gestensteuerungen für die teleoperierte Navigation von Servicerobotern. Insbesondere über den gebrauchstauglichen Einsatz von Gestensteuerungen für diesen Anwendungsfall liegen bisher nur wenige Erkenntnisse vor. Methodisch erfolgt nach einer Einführung in die Problemstellung eine wissenschaftliche und technische Grundlagenrecherche über die Gestaltungsmöglichkeiten einer Gestensteuerung. Aufbauend auf bisher formulierten Anforderungen an eine gebrauchstaugliche Gestensteuerung erfolgt eine Bewertung dieser Gestaltungsmöglichkeiten. Für den Erkenntnisgewinn über den Einsatz von Gestensteuerungen für die teleoperierte Navigation von Servicerobotern wurden aufbauend auf den Bewertungen der Gestaltungsmöglichkeiten empirische Untersuchungen durchgeführt. Diese empirischen Untersuchungen adressieren zum einen die Navigation eines bodengestützten und zum anderen die eines fluggestützten Roboters. Das Ergebnis dieser empirischen Untersuchungen ist die Erkenntnis, dass Gestensteuerungen nicht per se besser abschneiden als konventionelle Eingabeparadigmen, allerdings auch nicht schlechter. Zudem werden Hinweise gegeben, welche Herausforderungen zu lösen sind, damit Gestensteuerungen tatsächlich besser abschneiden als konventionelle Eingabeparadigmen. Damit können die Ergebnisse dieser Arbeit auch genutzt werden, um Gestaltungsempfehlungen für Gestensteuerungen für den Anwendungsfall der teleoperierten Navigation abzuleiten.
A Concept for Highly Automated Pre-Labeling via Cross-Domain Label Transfer for Perception in Autonomous Driving.Bieshaar, Maarten; Herde, Marek; Huselijc, Denis; Sick, Bernhard. In Workshop on Interactive Adaptive Learning (IAL), ECML PKDD. 2021.
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Novelty based Driver Identification on RR Intervals from ECG Data.Heidecker, Florian; Gruhl, Christian; Sick, Bernhard. In Workshop on Integrated Artificial Intelligence in Data Science, ICPR, pp. 407–421. IEEE, Milan, Italy, 2021.
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Description of Corner Cases in Automated Driving: Goals and Challenges.Bogdoll, Daniel; Breitenstein, Jasmin; Heidecker, Florian; Bieshaar, Maarten; Sick, Bernhard; Fingscheidt, Tim; Zöllner, J. Marius. In Embedded and Real-World Computer Vision in Autonomous Driving (ERCVAD), ICCV, pp. 1023–1028,. IEEE, 2021.
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An Application-Driven Conceptualization of Corner Cases for Perception in Highly Automated Driving.Heidecker, Florian; Breitenstein, Jasmin; Rösch, Kevin; Löhdefink, Jonas; Bieshaar, Maarten; Stiller, Christoph; Fingscheidt, Tim; Sick, Bernhard. In IEEE Intelligent Vehicles Symposium (IV), pp. 644–651. IEEE, Nagoya, Japan, 2021.
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Assistenzsysteme in der Industrie 4.0: Arbeitsrechtliche und beschäftigtendatenschutzrechtliche Fragestellungen in einem automatisierten Arbeitsumfeld. Hofmann, K. In of Der Elektronische Rechtsverkehr. Nomos Verlagsgesellschaft, 2021.
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Cyclist Motion State Forecasting -- Going beyond Detection.Bieshaar, M.; Zernetsch, S.; Riepe, K.; Doll, K.; Sick, B. In IEEE Symposium Series on Computational Intelligence (SSCI). IEEE, Orlando, FL, USA, 2021.
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2020[ to top ]

Sicherheit der Datenverarbeitung nach § 64 BDSG im Vergleich zur JI-Richtlinie und DS-GVO.Johannes, P. In ZD-Aktuell, p. 06875. 2020.
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Anonymität und Corona-App aus Sicht des Datenschutzrechts. Geminn, Christian; Müller, Johannes. 2020.
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Mobilität und Verkehr.Geminn, Christian; Müller, Johannes. In Handbuch IT-Sicherheitsrecht – Rechtsfragen der IT- und Cybersicherheit, G. Hornung, M. Schallbruch (eds.). Nomos, Baden-Baden, 2020.
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Gegenüberstellung – Schadensersatz nach BDSG, JI-Richtlinie und DS-GVO.Johannes, P. In ZD-Aktuell, p. 06925. 2020.
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§ 40 DSG NRW.Johannes, P. In Datenschutzgesetz NRW, Pabst, Schwartmann (eds.). 2020.
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Pose Based Action Recognition of Vulnerable Road Users Using Recurrent Neural Networks.Kress, V.; Schreck, S.; Zernetsch, S.; Doll, K.; Sick, B. In IEEE Symposium Series on Computational Intelligence (SSCI), pp. 2723–2730. IEEE, 2020.
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Gegenüberstellung HDSIG zu BDSG, DS-GVO und JI-RL.Johannes, P.; D., Zwirner. In ZD-Aktuell, p. 06977. 2020.
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Normal-Wishart clustering for novelty detection.Gruhl, Christian; Schmeißing, Jörn; Tomforde, Sven; Sick, Bernhard. In Workshop on Self-Improving System Integration (SISSY), ACSOS, pp. 64–69. IEEE, 2020.
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Let’s Team Up: Designing Conversational Agents as Teammates.Elshan, Edona; Ebel, Philipp. In International Conference on Information Systems (ICIS). 2020.
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The success of projects is, amongst others, highly depended on the team members skillset and ability to collaborate. Hence, education has to undergo a change to keep up with the shift in the compositions of skills and knowledge needed for students. To overcome scalability issues, we propose to develop Timmy-a conversational agents (CAs) that acts as a team member. As there is a lack of concrete design knowledge concerning CAs as peers in teams, we conduct a design science research project. Based on requirements from scientific literature and expert interviews, we develop a concise set of design principles for designing CAs in peer roles in educational settings. Furthermore, we present an initial proof of concept evaluation. These insights will support researchers and practitioners to understand better how CAs can be systematically built to ameliorate the collaborative skill of students in teamwork settings.
Performance analysis of edge-fog-cloud architectures in the Internet of Things.Geihs, Kurt; Baraki, Harun; de la Oliva, Antonio. In Proceedings of the 13th IEEE/ACM International Conference on Utility and Cloud Computing Companion. IEEE/ACM, 2020.
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We present a general performance model for communication architectures in Internet of Things scenarios. The architecture involves three processing layers, i.e., edge, fog, and cloud computing. According to the objectives of edge and fog computing, we assume that a certain percentage of the data is finally processed at the edge and fog layer. The rest is forwarded to the next higher layer for further processing. Data processing is modeled as a sequence of queueing stations. This allows us to compute performance parameters such as throughput and response times at all layers. The main contribution of this paper is an easy to use method for IoT application designers that provides a very fast and very flexible parametric support for evaluating design trade-offs in edge-fog-cloud configurations.
§§ 37- 39, 41 -44, 62 – 65 DSG NRW.Johannes, P.; Weinhold, R. In Datenschutzgesetz NRW, Pabst, Schwartmann (eds.). Baden-Baden, 2020.
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Aufbau und Ablauf des kuLtig-Projektes.Janson, Andreas; Thiel de Gafenco, Marian; Klusmeyer, Jens; Leimeister, Jan Marco. In Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China, J. M. Leimeister, J. Klusmeyer (eds.), pp. 13–17. SpringerGabler, Wiesbaden, Deutschland, 2020.
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USA: Mögliche Auswirkungen der Präsidentschaft Joe Bidens auf den Datenschutz.Johannes, P. In ZD-Aktuell, p. 07441. 2020.
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Art. 24, 25 BayDSG.Johannes, P. In Landesdatenschutzgesetz Bayern, Schröder (ed.). Baden-Baden, 2020.
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Datenschutz-Grundverordnung verbessern! – Änderungsvorschläge aus Sicht der Verbraucher. Geminn, Christian; Roßnagel, Alexander. Vol. DuD-Fachbeiträge. Springer Vieweg, Wiesbaden, 2020.
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Zertifizierung von Datenverarbeitungsvorgängen bei der Polizei.Johannes, P. In Die Polizei, (10), pp. 409 – 415. 2020.
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Bedarf an und Inhalt eines Gesetzes für Corona-Tracing-Apps.Johannes, P. In ZD-Aktuell, p. 07114. 2020.
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Rechtsverträgliche und qualitätszentrierte Gestaltung für „KI made in Germany“.Knote, Robin; Thies, Laura Friederike; Söllner, Matthias; Jandt, Silke; Leimeister, Jan Marco; Roßnagel, Alexander. In Informatik Spektrum. 2020.
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Künstlich intelligente (KI) Systeme erfreuen sich immer größerer Beliebtheit. Insbesondere smarte persönliche Assistenten (SPAs) von Amazon, Google und vielen weiteren verzeichnen ein stetiges Marktwachstum. Den vielfältigen Potenzialen dieser KI-Systeme stehen jedoch auch zahlreiche Risiken gegenüber. Berichte von Datenpannen und -lecks häufen sich und haben bei Nutzern eine zunehmende Skepsis zur Folge, was zu einem gespaltenen Bild von KI in der Gesellschaft beiträgt. Diesem Problem stellt sich das Forschungsprojekt AnEkA mit einem interdisziplinären Gestaltungsansatz. Auf Basis von Rechts- und Qualitätszielen werden Anforderungen an rechtsverträgliche und qualitativ hochwertige SPAs abgeleitet. Zusätzlich werden Gestaltungsalternativen identifiziert, die diese Anforderungen unter Berücksichtigung möglicher Zielkonflikte umsetzen. Ergebnis des Projekts sind Entwurfsmuster, die Entwicklern von SPAs dabei helfen sollen, rechtsverträgliche und qualitativ hochwertige SPAs und KI-Systeme im Allgemeinen zu entwickeln. Dadurch soll das Alleinstellungsmerkmal einer „KI made in Germany`` entstehen, welche sowohl die Bedürfnisse von Nutzern berücksichtigt und sie ebenfalls bestmöglich vor Risiken der Systemnutzung schützt. Dieser Beitrag erläutert das interdisziplinäre Vorgehen anhand eines Szenarios zur Nutzung von SPAs.
Gestaltungsdimensionen der Digitalisierung – Wie Dienstleistungssysteme den Wandel antreiben und welche Faktoren eine Rolle spielen.Grotherr, Christian; Li, Mahei; Schymanietz, Martin; Fritzsche, Albrecht; Semmann, Martin; Peters, Christoph; Böhmann, Tilo; Leimeister, Jan Marco; Möslein, Kathrin M. In Dienstleistungsinnovationen durch Digitalisierung, pp. 277–325. Springer Gabler, Berlin/Heidelberg, Germany, 2020.
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In Zeiten der Digitalisierung nimmt Informationstechnologie eine Schlüsselrolle im Modernisierungsprozess von Unternehmen ein. Zugleich bringt die Softwareeinführung das Risiko mit sich, den intendierten Nutzen nicht zu realisieren. Durch eine Dienstleistungssystem-Perspektive erscheint die Einbindung der Nutzer in die Softwareeinführung ein vielversprechender Ansatz. Das Ziel des Projektes ExTEND – Engineering von Dienstleistungssystemen für nutzergenerierte Dienstleistungen ist es daher, Nutzer in die Softwareeinführung nach dem Leitbild „Dienstleistungen von Nutzern für Nutzer“ zu befähigen, aktiv einen Beitrag zu der Gestaltung der Arbeitsumgebung zu leisten. Hieraus resultieren IT-gestützte Servicebausteine, in denen Nutzer sich gegenseitige Hilfestellungen geben und Handlungsalternativen in der Softwareeinführung aufzeigen. Durch ein Pilotierungsvorgehen werden die Servicebausteine in drei Anwendungsfeldern entwickelt und pilotiert. Hieraus resultiert evidenzbasiertes Gestaltungswissen für die Entwicklung von nutzergenerierten Dienstleistungen. Darüber hinaus wird ein Mehrebenenmodell für die Gestaltung von Dienstleistungssystemen vorgestellt, welches die Entwicklung von Dienstleistungssystemen unterstützt und über traditionelle Ansätze des Service Engineerings hinausgeht.
GEMIMEG II: Sensoren und digitale Zwillinge – sichere und robuste kalibrierte Messsysteme.Johannes, P. In ZD-Aktuell, p. 07280. 2020.
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Digitaler Wandel in der Arbeitswelt - Status Quo der Aus- und Weiterbildung in China. Janson, Andreas; Mauritz, Carsten; Weinert, Tim; Thiel de Gafenco, Marian. V. KoLeArn (ed.). 2020.
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Ladders for Learning: Is Scaffolding the Key to Teaching Problem Solving in Technology-mediated Learning Contexts?Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Academy of Management Learning & Education (AMLE), 19(4), pp. 439–468. Academy of Management, 2020.
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The success of innovative teaching/learning approaches aiming to foster problem solving in management education depends on useful and easy-to-use IT components in the learning process. However, the complexity of problem solving in self-regulated learning approaches may overwhelm the learner and can lead to unsatisfying learning outcomes. Research suggests the implementation of technology-enhanced scaffolds as a mechanism to guide the learners in their individual problem-solving process to enhance their learning outcomes. We present a theoretical model based on adaptive structuration theory and cognitive load theory that explains how technology-enhanced scaffolding contributes to learning outcomes. We test the model with a fully randomized between-subject experiment in a flipped classroom for management education focusing on individual problem solving. Our results show that technology-enhanced scaffolding contributes significantly to the management of cognitive load as well as to learning process satisfaction and problem-solving learning outcomes. Thereby, our paper provides new conceptual and empirically tested insights for a better understanding of technology-enhanced scaffolds and their design to assist problem solving and its respective effects in flipped classrooms for management education.
Rechtsverträgliche und qualitätszentrierte Gestaltung für „KI made in Germany“.Knote, Robin; Thies, Laura Friederike; Söllner, Matthias; Jandt, Silke; Leimeister, Jan Marco; Roßnagel, Alexander. In Informatik Spektrum. 2020.
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Künstlich intelligente (KI) Systeme erfreuen sich immer größerer Beliebtheit. Insbesondere smarte persönliche Assistenten (SPAs) von Amazon, Google und vielen weiteren verzeichnen ein stetiges Marktwachstum. Den vielfältigen Potenzialen dieser KI-Systeme stehen jedoch auch zahlreiche Risiken gegenüber. Berichte von Datenpannen und -lecks häufen sich und haben bei Nutzern eine zunehmende Skepsis zur Folge, was zu einem gespaltenen Bild von KI in der Gesellschaft beiträgt. Diesem Problem stellt sich das Forschungsprojekt AnEkA mit einem interdisziplinären Gestaltungsansatz. Auf Basis von Rechts- und Qualitätszielen werden Anforderungen an rechtsverträgliche und qualitativ hochwertige SPAs abgeleitet. Zusätzlich werden Gestaltungsalternativen identifiziert, die diese Anforderungen unter Berücksichtigung möglicher Zielkonflikte umsetzen. Ergebnis des Projekts sind Entwurfsmuster, die Entwicklern von SPAs dabei helfen sollen, rechtsverträgliche und qualitativ hochwertige SPAs und KI-Systeme im Allgemeinen zu entwickeln. Dadurch soll das Alleinstellungsmerkmal einer „KI made in Germany“ entstehen, welche sowohl die Bedürfnisse von Nutzern berücksichtigt und sie ebenfalls bestmöglich vor Risiken der Systemnutzung schützt. Dieser Beitrag erläutert das interdisziplinäre Vorgehen anhand eines Szenarios zur Nutzung von SPAs.
Rechtsverträgliche und qualitätszentrierte Gestaltung für ‚KI made in Germany‘ – Ein interdisziplinärer Ansatz am Beispiel smarter persönlicher Assistenten.Knote, Robin; Thies, Laura Friederike; Söllner, Matthias; Jandt, Silke; Leimeister, Jan Marco; Roßnagel, Alexander. In Informatik Spektrum. 2020.
- [ Abstract ]
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- [ DOI ]
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Künstlich intelligente (KI) Systeme erfreuen sich immer größerer Beliebtheit. Insbesondere smarte persönliche Assistenten (SPAs) von Amazon, Google und vielen weiteren verzeichnen ein stetiges Marktwachstum. Den vielfältigen Potenzialen dieser KI-Systeme stehen jedoch auch zahlreiche Risiken gegenüber. Berichte von Datenpannen und -lecks häufen sich und haben bei Nutzern eine zunehmende Skepsis zur Folge, was zu einem gespaltenen Bild von KI in der Gesellschaft beiträgt. Diesem Problem stellt sich das Forschungsprojekt AnEkA mit einem interdisziplinären Gestaltungsansatz. Auf Basis von Rechts- und Qualitätszielen werden Anforderungen an rechtsverträgliche und qualitativ hochwertige SPAs abgeleitet. Zusätzlich werden Gestaltungsalternativen identifiziert, die diese Anforderungen unter Berücksichtigung möglicher Zielkonflikte umsetzen. Ergebnis des Projekts sind Entwurfsmuster, die Entwicklern von SPAs dabei helfen sollen, rechtsverträgliche und qualitativ hochwertige SPAs und KI-Systeme im Allgemeinen zu entwickeln. Dadurch soll das Alleinstellungsmerkmal einer „KI made in Germany`` entstehen, welche sowohl die Bedürfnisse von Nutzern berücksichtigt und sie ebenfalls bestmöglich vor Risiken der Systemnutzung schützt. Dieser Beitrag erläutert das interdisziplinäre Vorgehen anhand eines Szenarios zur Nutzung von SPAs.
Vertrauensdienste oder Bärendienste? Rechtssicherheit von Kundenportalen Blockchain & Co durch oder neben der eIDAS-VO.Johannes, P. In Mensch – Technik – Umwelt: Verantwortung für eine sozialverträgliche Zukunft, Hentschel, Hornung, Jandt (eds.), pp. 587–602. Baden-Baden, 2020.
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Value Co-Creation in Smart Services: A Functional Affordances Perspective on Smart Personal Assistants.Knote, R.; Janson, A.; Söllner, M.; Leimeister, J. M. In Journal of the Association for Information Systems. 2020.
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Resiliente Informations- und Kommunikationstechnologie für ein krisenfestes Deutschland.Hollick, M.; Engels, J. I.; Fraune, C.; Freisleben, B.; Hornung, G.; Knodt, M.; M., Mühlhäuser. In emergenCITY Policy Paper No. 1. 2020.
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Beschäftigtendatenschutz und Covid-19: Daten sicher im Homeoffice?Gilga, Carolin. In ZD-Aktuell, p. 07113. 2020.
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Kulturelle Werte im Rahmen der Aneignung von IT-gestütztem Lernen.Janson, A.; Ernst, S. J.; Söllner, M. In Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China, pp. 21–46. SpringerGabler, Wiesbaden, Deutschland, 2020.
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Mobile Kompetenzentwicklung am Beispiel der „MoKe“ App.Ernst, Sissy-Josefina; Janson, Andreas. In Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China, J. M. Leimeister, J. Klusmeyer (eds.), pp. 71–88. SpringerGabler, Wiesbaden, Deutschland, 2020.
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EDSB: Überwachung sozialer Medien - Social Media Monitoring.Gilga, Carolin. In ZD-Aktuell, p. 07022. 2020.
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Leitfaden für kultursensitives E-Learning - Entwicklung auf Basis qualitativer Interviews.Ernst, Sissy-Josefina; Nölker, Julia; Janson, Andreas. In Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China, J. M. Leimeister, J. Klusmeyer (eds.), pp. 47–67. SpringerGabler, Wiesbaden, Deutschland, 2020.
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Engineering Challenges Ahead for Robot Teamwork in Dynamic Environments.Geihs, Kurt. In Applied Sciences, 10(4), p. 1368. Multidisciplinary Digital Publishing Institute, 2020.
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Verbesserung eines omnidirektionalen Laufeingabegerätes für die virtuelle Realität.Hegenberg, J.; Krause, P.; Schmidt, L. In Digitaler Wandel, digitale Arbeit, digitaler Mensch? 66. Kongress der Gesellschaft für Arbeitswissenschaft (Berlin 2020), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.1.2). GfA-Press, Dortmund, 2020.
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Ein Prototyp eines omnidirektionalen Laufeingabegerätes wurde insbesondere hinsichtlich des Regelungskonzeptes auf Basis von Empfehlungen aus der Literatur optimiert. Der Beitrag stellt die relevanten Rahmenbedingungen des Einsatzes solcher Systeme vor und berichtet über die Ergebnisse einer vergleichenden Studie, die auf die Verbesserung der Nutzung, insbesondere bzgl. der Regelung der translatorischen und der rotatorischen Bewegungsrichtung, abzielt. Dabei wurden zwei neuentwickelte Regelungsvarianten der bestehenden Lösung des Herstellers gegenübergestellt. Die Effekte wurden mit gängigen Standardfragebögen sowie Befragungsinstrumenten zu anderen Laufeingabegeräten untersucht. Es konnte ein signifikanter Vorteil des neuen Regelungskonzeptes belegt werden.
§§ 45, 47, 49, 51–53, 62–81 BDSG.Johannes, P.; Weinhold, R. In Bundesdatenschutzgesetz, Sydow (ed.). Baden-Baden, 2020.
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Said the Bot to the Computer: 57th collected significant residue transmission between MIT and SliMoSA3.Klumbytė, Goda; Britton, Loren. In Arts of the Working Class, (120), pp. 26–27. 2020.
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Re-Imagining HCI: New Materialist Philosophy and Figurations as Tool for Design.Klumbytė, Goda; Draude, Claude; Britton, Loren. 2020.
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In this paper we interrogate the practices of imagining in human-computer interaction (HCI), particularly in scenario building (SBE) and persona construction. We discuss the philosophical premises of HCI imaginings in rationalism, cognitivism and phenomenology, and we propose (feminist) new materialist philosophy as an enriching perspective that helps generate a holistic, relational perspective of users, imaginaries and technologies. In the end we explore the method of figurations as a potential tool for HCI design.
Forecasting Power Grid States for Regional Energy Markets with Deep Neural Networks.He, Y.; Henze, J.; Sick, B. In International Joint Conference on Neural Networks (IJCNN). IEEE, 2020.
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Frankreich: Bewertung der Tracing-App ‚StopCovid‘ durch die CNIL.Geminn, Christian. In ZD-Aktuell, (11), p. 07175. 2020.
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CNIL schließt Bewertung der App ‚StopCovid‘ ab.Geminn, Christian. In Zeitschrift für Datenschutz, (8), p. VII-VIII. 2020.
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Continuous Learning of Deep Neural Networks to Improve Forecasts for Regional Energy Markets.He, Yujiang; Henze, Janosch; Sick, Bernhard. In International Federation of Automatic Control (IFAC) World Congress, pp. 12175–12182. Elsevier, 2020.
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Japan: Nach der Reform ist vor der Reform.Geminn, Christian. In ZD-Aktuell, (19), p. 07391. 2020.
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Evaluation einer Augmented-Reality-Anleitung für eine komplexe Montageaufgabe.Funk, J.; Schmidt, L. In DELFI 2020: 18. Fachtagung Bildungstechnologien (Online 2020), of Lecture Notes in Informatics (LNI) - Proceedings, R. Zender, D. Ifenthaler, T. Leonhardt, C. Schumacher (eds.), pp. 25–36 *** Best Paper Award ***. Gesellschaft für Informatik, Bonn, 2020.
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Die vorliegende Studie vergleicht den Einsatz einer markerbasierten AR-Anleitung mit einer in der manuellen Montage üblichen Papieranleitung. Es wurden die Hypothesen geprüft, ob sich die Anleitungsart auf die Montagezeit, die Anzahl der Fehler, die Gebrauchstauglichkeit und die Beanspruchung der Mitarbeiter auswirkt. Statt mit studentischen Stichproben und künstlichen Montageaufgaben (z. B. Legobaugruppen) wurde die Studie mit 16 Auszubildenden an einem realen Arbeitsplatz für die Montage von Notgriffen zur Türentriegelung in Schienenfahrzeugen durchgeführt. Es wurden fünf Montagedurchgänge durchgeführt. Die Montagezeit und die gemachten Fehler wurden aus Videoaufzeichnungen ermittelt. Die Gebrauchstauglichkeit (SUS) und die Beanspruchung (NASA-TLX) wurden mit Fragebögen erhoben. Nachdem die AR-Gruppe zu Beginn langsamer montierte als die Papier-Gruppe, war diese im fünften Durchgang signifikant schneller. Die vergleichbare Fehleranzahl, Gebrauchstauglichkeit und Beanspruchung machen markerbasierte AR-Anwendungen besonders durch den leichten Einstieg und die geringen Kosten interessant für die Wissensvermittlung in der manuellen Montage.
Vergleichende Usability-Evaluation einer Lernplattform.Funk, J.; Schmidt, L. In Digitaler Wandel, digitale Arbeit, digitaler Mensch? 66. Kongress der Gesellschaft für Arbeitswissenschaft (Berlin 2020), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (C.8.1). GfA-Press, Dortmund, 2020.
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Im Rahmen der hier vorgestellten Studie wurden die Gebrauchstauglichkeit, die Gestaltung und der Aufbau einer zuvor an die Bedürfnisse der Lernenden angepassten Lernplattform bei Nutzung mit typischen Aufgaben, wie der Anmeldung mit Login-Daten, im Vergleich zu der unveränderten Moodle-Lernplattform untersucht. Neben Fragebögen für die Gebrauchstauglichkeit (SUS), die visuelle Gestaltung (VisAWI) und den Aufbau und die Struktur der Lernplattform wurden die Aufgabenerfüllung (Effektivität) und die dafür benötigten Zeiten (Effizienz) sowie teilweise Blickbewegungsdaten erfasst. Mit 29 Studienteilnehmenden zeigten sich keine signifikanten Unterschiede.
Stellungnahmen zur Evaluation der Datenschutz-Grundverordnung.Geminn, Christian; Charalampos, Leontopoulos. In ZD-Aktuell, p. 07024. 2020.
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Abstracting Otherwise: In Search for a Common Strategy of Arts and Computing.Klumbytė, Goda; Britton, Loren. In ASAP/Journal, 5(1), pp. 19–43. Project Muse, 2020.
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Digitalisierung und verletzliche Gruppen im Recht.Geminn, Christian. In Kritische Vierteljahresschrift für Gesetzgebung und Rechtswissenschaft, 103, pp. 254–288. 2020.
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Kommentierung von § 24 (Datenverarbeitung zu wissenschaftlichen oder historischen Forschungszwecken und zu statistischen Zwecken), § 28a (Datenverarbeitung bei öffentlichen Auszeichnungen und Ehrungen), § 28b (Datenverarbeitung in Gnadenverfahren) und §§ 80 bis 89 (Informationsfreiheit) HDSIG.Geminn, Christian. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos, Baden-Baden, 2020.
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Menschenwürde und menschenähnliche Maschinen und Systeme.Geminn, Christian. In Die Öffentliche Verwaltung, 73, pp. 172–181. 2020.
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Leitlinien der Europäischen Kommission zu Datenschutzstandards für Corona-Apps. Geminn, Christian. 2020.
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Einmal öffentlich - für immer schutzlos? Die Zulässigkeit der Verarbeitung öffentlicher personenbezogener Daten.Hornung, G.; Gilga, C. In Computer und Recht, pp. 367–379. 2020.
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Reframing AX with Critical Design: The Potentials and Limits of Algorithmic Experience as a Critical Design Concept.Klumbyte, Goda; Lücking, Phillip; Draude, Claude. In Proceedings of the 11th Nordic Conference on Human-Computer Interaction: Shaping Experiences, Shaping Society, of NordiCHI ’20. Association for Computing Machinery, Tallinn, Estonia, 2020.
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This paper investigates how Algorithmic Experience (AX) can be used as a conceptual tool to help make algorithms and experiences of them visible through systems design and how interactions might be designed in order to elicit conscious and critical examination. Can algorithmic systems be positioned as critical artifacts? If so, to what extent? The paper reflects on interactions between users and the Social Privilege Estimator– a social scoring system based on facial recognition and classification that was built as a critical design artifact in order to raise awareness of existing inequalities and adverse effects of facial recognition systems. We argue that critical design can and should be used for AX and human-algorithm interaction design in order to support algorithmic literacy and critical capacity of the users and we suggest some conceptual reframings of AX towards this goal.
Gesetzesinitiative zur Schaffung einer Federal Data Protection Agency in den USA.Geminn, Christian. In ZD-Aktuell, p. 07025. 2020.
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Das Recht auf Vergessenwerden als Strukturelement körperloser Sozialräume.Hornung, G. In Mensch - Technik - Umwelt: Verantwortung für eine sozialverträgliche Zukunft. Festschrift für Alexander Roßnagel zum 70. Geburtstag, pp. 379–400. Baden-Baden, 2020.
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A Self-Organizing Multi-Agent Knowledge Base.Jakob, Stefan; Jahl, Alexander; Baraki, Harun; Geihs, Kurt. In The IEEE 2020 International Conference on Web Services (ICWS 2020). IEEE, 2020.
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Intrinsic Dimension of Geometric Data Sets.Hanika, Tom; Schneider, Friedrich Martin; Stumme, Gerd. In Accepted for publication in: Tohoku Mathematical Journal. 2020.
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The curse of dimensionality is a phenomenon frequently observed in machine learning (ML) and knowledge discovery (KD). There is a large body of literature investigating its origin and impact, using methods from mathematics as well as from computer science. Among the mathematical insights into data dimensionality, there is an intimate link between the dimension curse and the phenomenon of measure concentration, which makes the former accessible to methods of geometric analysis. The present work provides a comprehensive study of the intrinsic geometry of a data set, based on Gromov's metric measure geometry and Pestov's axiomatic approach to intrinsic dimension. In detail, we define a concept of geometric data set and introduce a metric as well as a partial order on the set of isomorphism classes of such data sets. Based on these objects, we propose and investigate an axiomatic approach to the intrinsic dimension of geometric data sets and establish a concrete dimension function with the desired properties. Our mathematical model for data sets and their intrinsic dimension is computationally feasible and, moreover, adaptable to specific ML/KD-algorithms, as illustrated by various experiments.
Japan: Evaluation des Act on the Protection of Personal Information.Geminn, Christian. In Zeitschrift für Datenschutz, p. XVI-XVII. 2020.
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USA: Entwurf eines Data Accountability and Transparency Act of 2020 vorgelegt.Geminn, Christian. In ZD-Aktuell, (13), p. 07221. 2020.
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Risiken künstlicher Intelligenz für die menschliche Selbstbestimmung. Hagendorff, T.; Geminn, C.; Lamla, J.; Karaboga, M.; Krämer, N.; Nebel, M.; Uhlmann, M. Forum Privatheit, 2020.
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Towards Universal Login.Hühnlein, D.; Hühnlein, T.; Hornung, G.; Strack, H. In Open Identity Summit, pp. 193–200. Gesellschaft für Informatik e.V., Bonn, 2020.
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Null Models for Formal Contexts.Felde, Maximilian; Hanika, Tom; Stumme, Gerd. In Information, 11(3), p. 135. Multidisciplinary Digital Publishing Institute, 2020.
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Probabilistic upscaling and aggregation of wind power forecasts.Henze, Janosch; Siefert, Malte; Bremicker-Trübelhorn, Sascha; Asanalieva, Nazgul; Sick, Bernhard. In Energy, Sustainability and Society, 10(1), p. 15. 2020.
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Wind power forecasts of the expected wind feed-in for the next hours or days are necessary to integrate the generated volatile wind energy into power systems. Most forecasting models predict in some sense the best value, but they ignore the other possible outcomes which may arise because of forecasting uncertainties. Probabilistic forecasts, on the other hand, also predict a distribution of possible outcomes with their respective probabilities that specific power values will occur and therefore have higher information content. In this work, we address two problems that hinder the introduction of probabilistic forecasts in practice: (1) no measurement data are available for some wind farms and (2) the flexible aggregation of probabilistic forecasts for changing wind farm portfolios.
Vorb. zu § 3a sowie Kommentierung von §§ 3a, 33, 34 und 35.Hornung, G. In Verwaltungsrecht. VwVfG. Verlag C.H.Beck, Loseblatt, München, 2020.
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Representation Learning in Power Time Series Forecasting.Henze, Janosch; Schreiber, Jens; Sick, Bernhard. In Deep Learning: Algorithms and Applications, W. Pedrycz, S.-M. Chen (eds.), pp. 67–101. Springer International Publishing, 2020.
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Kommentierung von Art. 42, 43 DSGVO und § 39 BDSG (bis 5. Auflage: § 9a BDSG a.F.).Hornung, G. In Auernhammer. Datenschutz-Grundverordnung, Bundesdatenschutzgesetz und Nebengesetze, Kommentar, Vol. 4. Auflage 2014 (33 Seiten), 5. Auflage 2017 (49 Seiten), 6. Auflage 2018 (51 Seiten), 7. Auflage 2020 (53 Seiten)., M. Eßer, P. Kramer, K. v. Lewinski (eds.). Carl Heymanns Verlag, Köln, 2020.
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Mensch – Technik – Umwelt: Verantwortung für eine sozialverträgliche Zukunft, Festschrift für Alexander Roßnagel zum 70. Geburtstag. Hentschel, A.; Hornung, G.; Jandt, S. Nomos, 2020.
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Datenschutz nach Corona – Was ist da, was bleibt, was kommt?Geminn, Christian; Johannes, P.; Miedzianowski, Nadine. In ZD-Aktuell, p. 07073. 2020.
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Kommentierung von § 45 (Datenverarbeitung zu wissenschaftlichen oder historischen Forschungszwecken, archivarischen oder statistischen Zwecken) HDSIG.Geminn, Christian; Johannes, P. In Hessisches Datenschutz- und Informationsfreiheitsgesetz, A. Roßnagel (ed.). Nomos, Baden-Baden, 2020.
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Der Mensch in Recht und Technik – eine Bestandsaufnahme.Geminn, Christian. In Mensch – Technik – Umwelt: Verantwortung für eine sozialverträgliche Zukunft – Festschrift für Alexander Roßnagel zum 70. Geburtstag, A. Hentschel, G. Hornung, S. Jandt (eds.), pp. 63–80. Nomos, Baden-Baden, 2020.
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Betroffenenrechte verbessern – Überarbeitungsbedarf der Datenschutz-Grundverordnung.Geminn, Christian. In Datenschutz und Datensicherheit, pp. 307–311. 2020.
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Kinder als Nutzende smarter Sprachassistenten – Spezieller Gestaltungsbedarf zum Schutz von Kindern.Geminn, Christian; Jessica, Szczuka; Carina, Weber; André, Artelt; Lina, Varonina. In Datenschutz und Datensicherheit, pp. 600–605. 2020.
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EU-Kommission: Leitlinien zu Datenschutzstandards für Corona-Apps.Geminn, Christian. In ZD-Aktuell, (9), p. 07112. 2020.
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Reframing AX with Critical Design: The Potentials and Limits of Algorithmic Experience as a Critical Design Concept.Klumbytė, Goda; Lücking, Phillip; Draude, Claude. In Proceedings of the 11th Nordic Conference on Human-Computer Interaction: Shaping Experiences, Shaping Society, of NordiCHI ’20, pp. 1–12. Association for Computing Machinery, New York, NY, USA, 2020.
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This paper investigates how Algorithmic Experience (AX) can be used as a conceptual tool to help make algorithms and experiences of them visible through systems design and how interactions might be designed in order to elicit conscious and critical examination. Can algorithmic systems be positioned as critical artifacts? If so, to what extent? The paper reflects on interactions between users and the Social Privilege Estimator– a social scoring system based on facial recognition and classification that was built as a critical design artifact in order to raise awareness of existing inequalities and adverse effects of facial recognition systems. We argue that critical design can and should be used for AX and human-algorithm interaction design in order to support algorithmic literacy and critical capacity of the users and we suggest some conceptual reframings of AX towards this goal.
Anonymisierung als datenschutzrelevante Verarbeitung? Rechtliche Anforderungen und Grenzen für die Anonymisierung personenbezogener Daten.Hornung, Gerrit; Wagner, B. In Zeitschrift für Datenschutz, 5, pp. 223–228. 2020.
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§§ 25, 39, 40, 44 - 48, 58, 59, 62 - 72, 77, 78 HDSIG.Johannes, P. In Landesdatenschutzgesetz Hessen mit Informationsfreiheitsrecht, A. Roßnagel (ed.). Baden-Baden, 2020.
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Sekundärnutzung von Sozial- und Gesundheitsdaten – Rechtliche Rahmenbedingungen. Dierks, C.; Roßnagel, Alexander. In Vol. 17 of TMF-Schriftenreihe. Medizinisch Wissenschaftliche Verlagsgesellschaft, Berlin, 2020.
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Die interne Crowd - Mitarbeiter/innen im Spannungsfeld neuer Arbeitsformen. Study der Hans-Böckler-Stiftung. Leimeister, Jan Marco; Durward, David; Simmert, Benedikt. Vol. Band 436. Dusseldorf, Germany, 2020.
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Ungleiche Präferenzen? Zum Zusammenhang von Studienfachwahl und Geschlecht aus sozialisations- und geschlechtertheoretischer Perspektive am Beispiel des Studienfachs Informatik.Bereswill, Mechthild; Draude, Claude; Kuhn, Hans-Peter; Bläsing, Lisa Marie; Lumpp, Gabriele; Spitzner, Josefine. In ZSE Zeitschrift für Soziologie der Erziehung und Sozialisation, 40(3), pp. 231–253. Beltz Juventa, 2020.
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Insgesamt zeigen sich bei der Studienfachwahl in Deutschland teilweise große Unterschiede zwischen den Geschlechtern. So studieren Frauen deutlich seltener als Männer Fächer im MINT-Bereich, Männer dagegen deutlich seltener Fächer im sozialen Bereich. Der Beitrag stellt die Frage, warum solche Ungleichheiten trotz zahlreicher bildungspolitischer Interventionen stabil bleiben und sich auf der Ebene der individuellen Entscheidungen entsprechend konventionelle Orientierungen zeigen. Zunächst werden verschiedene Einflussfaktoren hinsichtlich der Studienfachwahl unter einer sozialisations- und entwicklungstheoretischen Perspektive in den Blick genommen. Im Anschluss daran werden die beharrlichen Unterschiede in den individuellen Orientierungen und Entscheidungen von Mädchen und Jungen aus einer geschlechtertheoretischen Perspektive als strukturelle Ungleichheiten eingeordnet. Zuletzt werden die mit diesen strukturellen Ungleichheiten zusammenhängenden Dynamiken von Öffnungen und Schließungen eines sozialen Feldes am Beispiel des Fachs Informatik weiter konkretisiert und es wird gezeigt, dass Veränderungen nur greifen können, wenn eine Fachkultur sich im Hinblick auf systematische Öffnungen wandelt. Im Fazit wird dafür plädiert, die verschiedenen Forschungsstränge und Theorieperspektiven, die im Beitrag aufgenommen werden, in Zukunft noch stärker zu verbinden.
Ungleiche Präferenzen? Zum Zusammenhang von Studienfachwahl und Geschlechterzuschreibungen.Bereswill, Mechthild; Draude, Claude; Kuhn, Hans-Peter. In ZSE Zeitschrift für Soziologie der Erziehung und Sozialisation, 40(3), pp. 227–230. Beltz Juventa, 2020.
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Einführung in den Themenschwerpunkt
What Does Your Gaze Reveal About You? On the Privacy Implications of Eye Tracking.Kröger, Jacob Leon; Lutz, Otto Hans-Martin; Mueller, Florian H. In Privacy and Identity Management. Data for Better Living: AI and Privacy. Privacy and Identity 2019. IFIP Advances in Information and Communication Technology, Vol. 576, F. M., Ö. M., L. E., K. S., F. S. (eds.). Springer, Cham, 2020.
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Enquete-Kommission: Wie steht es um die „Künstliche Intelligenz“ in Deutschland?Lurtz, Helmut; Stroscher, Jan-Philipp. In ZD-Aktuell, p. 07440. 2020.
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Co-Creation durch Peers im digitalen Lernen – Wie Plattformen und Chatbots die Partizipation bei der Lernmaterialerstellung begleiten können.Billert, Matthias Simon; Weinert, Tim; Janson, Andreas; Leimeister, Jan Marco. In HMD Praxis der Wirtschaftsinformatik, 57(4), S. Robra‐Bissantz; C. Lattemann (eds.), pp. 722–743. 2020.
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Die Arbeit in Industrieunternehmen verändert sich auf Grund der Digitalisierung grundlegend. Entwicklungen in der Automatisierungstechnik können in naher Zukunft einen Teil der Arbeit von Arbeitnehmenden ersetzen. Dadurch wird es notwendig sein, sich auf die sich schnell wechselnden Qualifikationsanforderungen aus diesem Digitalisierungsprozess einzustellen. Hierzu gehört einerseits die schnelle Reaktionsfähigkeit auf die fortlaufenden Veränderungen, die in Unternehmen stattfinden, beispielsweise die Einbettung neuer Technologien in Arbeitsprozesse. Andererseits aber auch die notwendigen Upskilling-Prozesse, die durch den Einsatz neuer Technologien notwendig werden. Für beide Aspekte sind aber entsprechende Angebote zur Schulung notwendig, die sich flexibel auf die Bedarfe anpassen. Digitale Lernservices ermöglichen dabei auf die individuellen Arbeitssituation von Mitarbeitenden zu reagieren und im Sinne der Co-Creation den Prozess der gemeinsamen Erstellung von Lern- sowie Schulungsmaterialien durch die Einbindung mehrerer Akteure zu steuern.
Abschluss des Forschungsprojekts ‚Desinformation aufdecken und bekämpfen‘ (DORIAN).Löber, Lena I. In ZD-Aktuell, p. 06980. 2020.
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Automatisierte Ungleichheit - Wie algorithmische Entscheidungssysteme gesellschaftliche Machtverhältnisse (re)produzieren.Lücking, Phillip. In Wenn KI, dann feministisch, netzforma e.V. (ed.), pp. 65–76. Berlin, 2020.
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Gebrauchstauglichkeit einer Augmented-Reality-Reiseassistenzanwendung und Vergleich mit herkömmlicher Unterstützung in einem Echtweltszenario.Mack, N. A.; Schmidt, L. In Digitaler Wandel, digitale Arbeit, digitaler Mensch? 66. Kongress der Gesellschaft für Arbeitswissenschaft (Berlin 2020), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.3.4). GfA-Press, Dortmund, 2020.
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Im Rahmen des Projektes RadAR+ wurde eine Augmented-Reality-(AR)-Reiseassistenzanwendung für eine Datenbrille entwickelt und prototypisch umgesetzt, welche ein Routing für den öffentlichen Verkehr sowie eine AR-Fußgängernavigation vereint und dadurch eine vollständige Navigation vom Start- zum Zielort ermöglicht. Der Prototyp wurde in einem Echtweltszenario mit 37 Probanden vergleichend zur herkömmlichen Unterstützung evaluiert. Es konnte gezeigt werden, dass die Gebrauchstauglichkeit der AR-Reiseassistenzanwendung von den Probanden als "gut" bewertet wird. Des Weiteren ist feststellbar, dass keine signifikanten Unterschiede zwischen der subjektiv empfundenen Beanspruchung beim Prototyp und der herkömmlichen Unterstützung bestehen. Jedoch gab es eine signifikant geringere Schrittzahl bei der Gruppe, die das Reiseassistenzsystem nutzte.
Im Auge des Datenschutzes - Haushaltsausnahme bei Datenbrillen.Lurtz, Helmut; Bicer, E. In ZD-Aktuell, p. 07115. 2020.
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Designing Effective Privacy Nudges in Digital Environments: A Design Science Research Approach.Barev, Torben Jan; Janson, Andreas; Leimeister, Jan Marco. In International Conference on Design Science Research in Information Systems and Technology (DESRIST), pp. 388–393. Springer, Cham - Vinton G. Cerf Award., 2020.
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When using digital technologies, various data traces are left behind for collection, storage and analysis. Innovative solutions for information systems are needed that mitigate privacy risks and foster information privacy. One mechanism to achieve this is using privacy nudges. Nudges are a concept from behavioral eco-nomics to influence individual’s decisions. However, many nudges show low or at least less effects than choice architects hope for and expect. Therefore, this de-sign science research (DSR) project focusses on developing evidence-based de-sign principles for privacy nudges to improve their effectiveness and pave the way for more privacy sensitive IT systems. In this context, we adopt a DSR ap-proach from Vaishnavi & Kuechler. From a theoretical perspective, we are con-tributing to the discussion of what drives privacy sensitive behavior. We extend generic nudge design models, making them applicable in the context of data dis-closure. For practitioners, we provide guidance on how to design and implement effective privacy nudges in the user interface of digital work systems.
Theory-Motivated Design for Developing Privacy Nudges.Barev, Torben Jan. In International Conference on Wirtschaftsinformatik (WI). 2020.
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Using digital technologies, various data traces are left behind for collection, storage and analysis. Potential risks that the availability of personal information entails, like the vulnerability to discrimination, commercial exploitation and unwanted monitoring, is ubiquitous. Hence, modern IT systems are needed that ensure employees' privacy and informational self-determination. One mechanism to achieve this is the implementation of privacy nudges in modern working systems. Nudging is a mechanism to influence decisions in a predictable way. In this context, privacy nudging concepts should influence employees` behavior in digital working environments in such a way that they make more data protection-friendly decisions. In this research project I am focusing on building an integrative understanding of effective nudging in privacy-related decisions. From this, design knowledge for better privacy nudges in digital work systems should be derived, which can pave the way for more privacy-sensitive IT systems. Successfully implemented privacy nudges can increase acceptance, trust and usage of modern IT-systems. Privacy sensitive IT-systems can then constitute a competitive advantage for the company. On the side of society, informational self-determination can be ensured and the potential risks that the availability of personal information entails can be reduced.
Towards a New Methodology to Capture the Legal Compatibility of Conversational Speech Agents.Dickhaut, Ernestine; Thies, Laura Friederike; Janson, Andreas; Roßnagel, Alexander; Leimeister, Jan Marco. In Conference on Conversational User Interfaces (CUI). 2020.
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Higher legal standards with regards to the data protection of individuals such as the EU General Data Protection Regulation (EU-GDPR) are increasing the pressure on developers of IT artifacts. This is especially prevalent when considering conversational speech agents (CSA), which are collecting data in new ways and thus are oftentimes producing conflicts with existing law regulations. For this purpose, we introduce the law simulation method, which is a well-known evaluation method among law researchers for capturing the legal compatibility of IT artifacts such as CSA. With this rigorous method, we are able to derive actionable guidance for CSA developers to evaluate developer efforts for increasing legal compatibility. To illustrate our methodological approach, we describe in this paper key steps of the method with respect to the evaluation of CSA. We briefly discuss how this procedure can serve as the foundation for a new evaluation method of legally compatible systems in information systems.
Hintergrund und Zielsetzung des kuLtig-Projektes.Leimeister, Jan Marco; Klusmeyer, Jens. In Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China, J. M. Leimeister, J. Klusmeyer (eds.), pp. 3–11. SpringerGabler, Wiesbaden, Deutschland, 2020.
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Designing for Crowdfunding Co-creation: How to Leverage the Potential of Backers for Product Development.Lipusch, Nikolaus; Dellermann, Dominik; Bretschneider, Ulrich; Ebel, Philipp; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE), 62(6), pp. 483–499. 2020.
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Crowdfunding is now established as a valid alternative to conventional methods of financing for startups. Unfortunately, to date, research has not investigated how backers can be encouraged to support entrepreneurs beyond funding. The aim of this study is to design and evaluate certain design elements for reward-based crowdfunding platforms that can engage backers in co-creational activities for product development. The study uses a design science research (DSR) approach and the theoretical concept of psychological ownership to inform a new design and then experimentally test that design. The results suggest that the derived artifacts positively influence co-creational activities in crowdfunding and that feelings of psychological ownership play an important mediating role. The contribution of this research is threefold. First, this paper extends crowdfunding’s application potential from merely a method of financing to a method of value creation with customers for product development. Second, the study advances DSR by applying a new DSR approach that shows whether a design performs as hypothesized by theory. Third, this research allows the exploration of backers’ individual behavior as opposed to their collective behavior.
For CS.Britton, Loren; Pritchard, Helen. In Interactions, 27(4), pp. 94–98. Association for Computing Machinery, New York, NY, USA, 2020.
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CS FIELD MANUAL.Britton, Loren; Pritchard, Helen. In Arts of the Working Class. 2020.
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Der Ansatz von Mustern zur systematischen Steigerung der Rechtsverträglichkeit und Dienstleistungsqualität bei der Entwicklung soziotechnischer Systeme.Leimeister, Jan Marco; Dickhaut, Ernestine; Janson, Andreas. In Mensch - Technik - Umwelt: Verantwortung für eine sozialverträgliche Zukunft. Festschrift für Alexander Roßnagel zum 70. Geburtstag, A. Hentschel, G. Hornung, S. Jandt (eds.), pp. 131–147. Nomos, Baden-Baden, Deutschland, 2020.
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Positionspapier des Rates der Europäischen Union zur Anwendung der DS-GVO.Lurtz, Helmut. In ZD-Aktuell, p. 06978. 2020.
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Künstliche Intelligenz und menschliche Kompetenz zur Automatisierung und Personalisierung von Dienstleistungen am Beispiel des Support.Li, Mahei Manhei; Bronner, Esther; Peters, Christoph; Leimeister, Jan Marco. In Automatisierung und Personalisierung von Dienstleistungen, M. Bruhn, K. Hadwich (eds.). Springer Gabler, Wiesbaden, Deutschland, 2020.
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Der Beitrag beleuchtet Möglichkeiten, wie der zunehmenden Komplexität digitaler Dienstleistungen und den einhergehenden Herausforderungen für den IT-Support mithilfe von künstlicher Intelligenz, begegnet werden kann, um personalisiert Nutzerprobleme durch das Automatisierungspotenzial von Chatbots, lösen zu können. Der Beitrag stellt somit die Grundlagen dar, um theoriegeleitet ein Support-System zu entwickeln, das klassischen Support mit Crowdsupport kombiniert und um einem Chatbot ergänzt. Es werden Potenziale aufgezeigt die Effizienz und Qualität im IT-Support zu erhöhen, IT-Mitarbeitende zu entlasten sowie Mitarbeitenden in die Support-Struktur miteinzubeziehen.
Handlungsbroschüre. Anforderungs- und Entwurfsmuster zur rechtsverträglichen und qualitätszentrierten Gestaltung kontextsensitiver Applikationen (AnEkA). Handlungsempfehlungen zur Gestaltung von Anforderungs- und Entwurfsmustern. Dickhaut, Ernestine; Miedzianowski, Nadine; Jandt, Silke; Janson, Andreas; Knote, Robin; Leimeister, Jan Marco; Roßnagel, Alexander; Söllner, Matthias; Thies, Laura Friederike. Vol. 10. ITeG Technical Reports, Kassel, Germany, 2020.
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Im Rahmen des DFG-geförderten Projekts AnEkA „Anforderungs- und Entwurfsmuster zur rechtsverträglichen und qualitätszentrierten Gestaltung kontextsensitiver Applikationen“ wurden Anforderungs- und Entwurfsmuster für die Gestaltung rechtsverträglicher, aber gleichermaßen qualitätszentrierter smarter persönlicher Assistenten erstellt. Neben einem umfangreichen Musterkatalog hat das Projektteam ein Vorgehen für die Erstellung von Entwurfsmustern erarbeitet. Die Handlungsbroschüre soll zunächst eine Einführung in die Thematik der rechtsverträglichen und qualitätszentrierten Entwicklung geben und das Potential des Einsatzes von Anforderungs- und Entwurfsmustern aufzeigen. Darauf aufbauend werden das methodische Vorgehen, wie Muster zu erstellen sind, sowie die im Projekt erstellten Anforderungs- und Entwurfsmuster anhand von einigen Beispielen inhaltlich vorgestellt. Abschließend werden Handlungsempfehlungen für die Erstellung und den Einsatz von Anforderungs- und Entwurfsmustern gegeben. Im Anhang werden alle im Forschungsprojekt AnEkA erarbeiteten Anforderungs- und Entwurfsmuster zur weiteren Nutzung zur Verfügung gestellt.
Software-Defined Business – Implications for IT Management.Alt, Rainer; Leimeister, Jan Marco; Priemuth, Thomas; Sachse, Stephan; Urbach, Nils; Wunderlich, Nico. In Business & Information Systems Engineering, 62(6), pp. 609–621. 2020.
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In August 2011 the Wall Street Journal published an essay by Netscape co-founder Marc Andreessen titled “Why software is eating the world”. He argues that “more and more major businesses and industries are being run on software and delivered as online services—from movies to agriculture to national defense. Many of the winners are Silicon Valley-style entrepreneurial technology companies that are invading and overturning established industry structures. […] Companies in every industry need to assume that a software revolution is coming.” (Andreessen 2011). By pointing at examples in various industries from automotive and banking to defense, healthcare, music, retailing, and telecommunications, he illustrates the transformational power of information technology (IT) and software in particular. The discussion is not new and dates back to the early 2000s. For example, Power and Jerjian (2001, p. 99) mention for Heathrow airport that “software is the thing that runs the airport” and in a biological analogy they consider software to be the nervous system. Meanwhile, the large “big tech” software companies (e.g., GAFAM, BATX) have impressively confirmed this development: their digital platforms have spread over many industries with an impact on processes (e.g., interaction and transaction), on products (e.g., app stores and services) as well as on business models (e.g., streaming and as-a-service models). The recent tech-portmanteaus (e.g., Fintech, Insurtech, Regtech) also reflect the attitude of these startup businesses, which perceive themselves rather as IT (tech) companies than as representatives of the industry they are aiming to transform (Meijer and Kapoor 2014). In the same vein, the high valuation of Tesla Motors since early 2020 spurred an intense debate of whether the company is in the automotive or the tech business (e.g., Klebnikov 2020). Obviously, these developments have numerous implications for the field of IT management, which were discussed during a panel at the 82nd Annual German Business Researcher Conference on March 18, 2020. The panel builds on prior discussions regarding the impact of digitalization on IT management. For example, a BISE discussion section in 2017 addressed the implications of the broad trend of digitalization for the field of Business Information Systems Engineering and pointed out new topics, such as digital innovation and transformation, which complement existing competencies (e.g., in modeling and managing enterprise IT). The discussion revealed strong arguments for the strategic role of IT and that business and IT departments as well as academia and practice need to collaborate more closely (Legner et al. 2017). While these statements adopted a rather broad perspective, another discussion section focused on “the impact of digitalization on the IT department” (Urbach et al. 2019). It mentioned important and intricate challenges: On the one hand, IT departments need to move closer to the business units and, on the other hand, they need to constantly update their technological skills in an environment with a high pace of technological innovation. In a world “eaten by software” these developments are equally prevalent and lead to the question how businesses address these challenges, in particular, how they assess the dominant role of software, how activities in managing the software lifecycle should be organized, and what the implications are for the BISE community.
Datenschutz in der Blockchain - Diskussion der Herausforderungen und Lösungsansätze auf Basis der Blockchain-Konsultation der Bundesregierung. Bile, Tamer; Ebbers, F.; Karaboga, M.; Bremert, B. Fraunhofer ISI, Karlsruhe, 2020.
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Reward-based Crowdfunding.Kunz, Michael Marcin; Bretschneider, Ulrich; Leimeister, Jan Marco. In Handbuch Digitale Wirtschaft, 1st ed., T. Kollmann (ed.), pp. 755–787. Springer Gabler, Wiesbaden, Germany, 2020.
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Crowdfunding unterstützt neue Start-ups dabei, den Finanzierungsbedarf der ersten Unternehmensphase zu überwinden. Dieser Bedarf wird über die Unterstützung einer Vielzahl an Geldgebern mit kleinen Geldbeträgen realisiert. Das Ziel dieses Beitrages ist, den aktuellen Stand der Erfolgsfaktorenforschung im reward-based Crowdfunding zu reflektieren und auf Basis einer qualitativen Expertenbefragung um noch nicht betrachtete Aspekte zu erweitern. Durch dieses Vorgehen erhalten Projektinitiatoren einen Katalog an die Hand, der ihnen dabei hilft die Erfolgschancen eigener Kampagnen zu steigern.
Die Zertifizierung von Verarbeitungsvorgängen nach der DSGVO – Anforderungen an Zertifizierungsprogramme.Maier-Reinhardt, Natalie. In Mensch – Technik – Umwelt: Verantwortung für eine sozialverträgliche Zukunft, Festschrift für Alexander Roßnagel zum 70. Geburtstag, Hentschel, Hornung, Jandt (eds.), pp. 401–417. Baden-Baden, 2020.
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Probably approximately correct learning of Horn envelopes from queries.Borchmann, Daniel; Hanika, Tom; Obiedkov, Sergei. In Discrete Applied Mathematics, 273, pp. 30–42. 2020.
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We propose an algorithm for learning the Horn envelope of an arbitrary domain using an expert, or an oracle, capable of answering certain types of queries about this domain. Attribute exploration from formal concept analysis is a procedure that solves this problem, but the number of queries it may ask is exponential in the size of the resulting Horn formula in the worst case. We recall a well-known polynomial-time algorithm for learning Horn formulas with membership and equivalence queries and modify it to obtain a polynomial-time probably approximately correct algorithm for learning the Horn envelope of an arbitrary domain.
Judging Alexa - Towards a New Methodology to Capture the Legal Compatibility of Conversational Speech Agents.Dickhaut, Ernestine; Thies, Laura Friederike; Janson, Andreas; Roßnagel, Alexander; Leimeister, Jan Marco. In Conference on Conversational User Interfaces (CUI), pp. 1–4. 2020.
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Higher legal standards with regards to data protection of individuals such as EU-GDPR are increasing the pressure on developers of IT artifacts. This is especially prevalent when considering conversational speech agents (CSA) that are collecting data in new ways, and thus, are oftentimes producing conflicts with existing law regulations. For this purpose, we introduce the law simulation method which is a well-known evaluation method among law researchers for capturing legal compatibility of IT artifacts such as CSA. With this rigorous method, we are able to derive actionable guidance for CSA developers to evaluate developer efforts for increasing legal compatibility. To illustrate our methodological approach, we describe in this workshop paper key steps of the method with respect to the evaluation of CSA. We discuss how this can serve as the foundation for a new evaluation method of legally compatible systems in information systems.
Die Kodifizierung von Gestaltungswissen in interdisziplinären Entwurfsmustern - Lösungen im Spannungsfeld zwischen Rechtsverträglichkeit und Dienstleistungsqualität.Dickhaut, Ernestine; Thies, Laura Friederike; Janson, Andreas. In Datenschutz und Datensicherheit (DuD), pp. 584–588. 2020.
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In der Entwicklung informationstechnischer Systeme entstehen oft Zielkonflikte, die durch Gestaltung der Systeme aufgelöst werden müssen. Hierfür fehlt es Entwicklern, insbesondere bei Konflikten zwischen Rechtsverträglichkeit und Dienstleistungsqualität, oft an dem notwendigen Wissen und der erforderlichen Gestaltungserfahrung. Hier können Entwurfsmuster weiterhelfen. Der Beitrag stellt am Beispiel Smarter Persönlicher Assistenten einen Ansatz vor, in dem Entwurfsmuster interdisziplinäres Gestaltungswissen zusammenführen, geht auf die Besonderheiten des Gestaltungswissens der beiden Disziplinen ein und stellt ein beispielhaftes Entwurfsmuster vor.
Interdisziplinäre Anforderungsmuster für smarte persönliche Assistenten - Mittel zu Erfassung divergenter Anforderungen aus Informatik und Recht.Dickhaut, Ernestine; Janson, Andreas; Roßnagel, Alexander; Leimeister, Jan Marco. In Datenschutz und Datensicherheit (DuD), 44(9), pp. 579–583. 2020.
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Bei der Entwicklung smarter persönlicher Assistenten können Anforderungsmuster helfen, die oftmals konfliktären Anforderungen zu systematisieren und miteinander in Einklang zu bringen. Sie können wiederkehrende rechtliche und qualitative Anforderungen in einer für Entwickler verständlichen Form darstellen und so helfen, sie im Entwicklungsprozess besser zu berücksichtigen.
Situated algorithms: a sociotechnical systemic approach to bias.Draude, Claude; Klumbytė, Goda; Lücking, Phillip; Treusch, Pat. In Online Information Review, 44(2), pp. 325–342. 2020.
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Reconstruction of offsets of an electron gun using deep learning and an optimization algorithm.Meier, David; Hartmann, Gregor; Völker, Jens; Viefhaus, Jens; Sick, Bernhard. In Advances in Computational Methods for X-Ray Optics V, pp. 71–77. SPIE, 2020.
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"Evaluation of the General Data Protection Regulation", Policy Paper, Schriftenreihe Forum Privatheit. Bile, Tamer; Roßnagel, Alexander; Geminn, Christian; Nebel, Maxi; Hallinan, D. Fraunhofer ISI, Karlsruhe, 2020.
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Desperately Seeking the Artefacts and the Foundations of Native Theory in Gamification Research: Why Information Systems Researchers Can Play a Legitimate Role in this Discourse and How They Can Better Contribute.Lowry, Paul Benjamin; Petter, Stacie; Leimeister, Jan Marco. In European Journal of Information Systems (EJIS), 29(4), pp. 609–620. 2020.
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Gamification has taken the world by storm. Regardless of where one stands on gamification, it can aptly be described as interesting but also galvanising and controversial. We are pleased to write a provocative editorial to kick off this special issue on gamification in the European Journal of Information Systems. Our position is that the information systems (IS) discipline has the opportunity to play an outsized role in navigating the discourse of gamification-an increasingly influential, interdisciplinary discourse in research and practice. We assert that active engagement in the gamification discourse is a compelling IS research opportunity, given the growing, globalised platform-based economy. Consequently, we frame our editorial with the knowledge we have gained as IS researchers who engage in gamification research in an effort to share what we have learned about artefacts and original theorisation with both IS and gamification scholars. We do so by proposing a pragmatic path forward for gamification and IS researchers who wish to contribute to these related discourses, both individually and in the form of the combined IS-gamification discourse. We propose a framework of three practices that we are confident can more systematically generate the key theoretical artefacts needed to generate native theory in the IS-gamification discourse and hence to improve the associated research and practice. Foundational to this framework is our paradigm, which advocates active engagement with IS-gamification research and practice, as bridged by a strong focus on design thinking and generating artefacts that are foundational to theory generation.
Bewertungstechnologien im Beschäftigungsverhältnis – eine (erste) datenschutzrechtliche Bewertung.Lurtz, Helmut. In ZD-Aktuell, p. 06926. 2020.
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Wie können Systeme künstlicher Intelligenz ohne Qualitätsverlust rechtsverträglich gestaltet werden?Dickhaut, Ernestine; Janson, Andreas; Leimeister, Jan Marco. In Wirtschaftsinformatik & Management, 12(2), pp. 90–100. 2020.
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Künstliche intelligente (KI)-Systeme erfreuen sich immer größerer Beliebtheit. Im Alltag erleben wir KI beispielsweise durch smarte persönliche Assistenten (SPAs), welche von Amazon, Google und Co. angeboten werden. Zwar haben diese KI-Systeme große Nutzungspotenziale, gleichzeitig gehen damit aber auch erhebliche Risiken einher, beispielsweise datenschutzrechtliche. Doch wie lassen sich diese Spannungsfelder auflösen? Interdisziplinäre Gestaltungsmuster im Systementwicklungsprozess können eine Lösung darstellen, welche nachfolgend mit Handlungsimplikationen für gesellschaftlich wünschenswerte „KI made in Germany“ skizziert wird.
"Boundaries Do Not Sit Still" from Interaction to Agential Intra-action in HCI.Draude, Claude. In Human-Computer Interaction. Design and User Experience, Vol. 12181 of Lecture Notes in Computer Science, M. Kurosu (ed.), pp. 20–32. Springer International Publishing, Copenhagen, Denmark, 2020.
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We live in a world that is increasingly shaped through computational technology. The expansion and pervasiveness of computing brings along opportunities and challenges for the field of HCI. New application domains evolve and technological advances pose novel interaction possibilities. But with computing's shaping power comes also the need for increased responsibility and attention to the societal, political and ecological impact of technology. In this conceptual paper, new materialist thinking is employed to locate these societal etc. aspects as inextricably enmeshed within computing research and development. New materialism is a multi-vocal, cross-disciplinary field of doing-thinking. In contrast to Western dichotomic tradition, a monistic, post-anthropocentric perspective is provided and matter as an active agent in world-making is acknowledged. Central to this paper is the questioning of the human and computer dichotomy at the core of the field of HCI. For this, a material-semiotic perspective on human-computer interaction is elaborated upon. Furthermore, the paradigm of interaction is revisited and reworked as a conception of agential intra-action, a term coined by physicist Karen Barad. From this interrogation of dichotomies and the notion of intra-action follow further conceptual shifts that are discussed as productive for the future of HCI, namely responsibility as specification of ethical agency and performativity in contrast to representationalism.
Entwurfsmuster für die interdisziplinäre Gestaltung rechtsverträglicher Systeme. Dickhaut, E.; Thies, L. F.; Janson, A.; Leimeister, J. M.; Söllner, M. Forum Privatheit, 2020.
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"...but how do you formalize it?" - Gender Studies als konstruktive Intervention in der Informatik.Draude, Claude. In Gender (&) Design. Positionen Zur Vergeschlechtlichung in Gestaltungskulturen, Vol. 2, T. Bieling (ed.). MIMESIS EDIZIONI, 2020.
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The Nature of Crowd Work and its Effects on Individuals’ Work Perception.Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In Journal of Management Information Systems (JMIS), 37(1), pp. 66–95. 2020.
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Crowd work reflects a new form of gainful employment on the Internet. We study how the nature of the tasks being performed and financial compensation jointly shape work perceptions of crowd workers in order to better understand the changing modes and patterns of digital work. Surveying individuals on 23 German crowd working platforms, this work is the first to add a multi-platform perspective on perceived working conditions in crowd work. We show that crowd workers need rather high levels of financial compensation before task characteristics become relevant for shaping favorable perceptions of working conditions. We explain these results by considering financial compensation as an informational cue indicating the appreciation of working effort that is internalized by well-paid crowd workers. Resulting boundary conditions for task design are discussed. These results help us understand when and under what conditions crowd work can be regarded as a fulfilling type of employment in highly developed countries.
Export beruflicher Aus- und Weiterbildung - Entwicklung und Evaluation kultursensitiver Lerndienstleistungen am Beispiel China. Leimeister, Jan Marco; Klusmeyer, Jens. SpringerGabler, Wiesbaden, Deutschland, 2020.
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Im diesem Sammelband adressieren die Autoren charakteristische Herausforderungen des Exports von digitalen Lerndienstleistungen im Bereich der beruflichen Aus- und Weiterbildung. Sie stellen disziplinübergreifende Methoden und Modelle vor, mit denen die erforderliche Flexibilität auf Seiten der Dienstleister in der Planung, Vermarktung und Evaluation für einen wachsenden internationalen Markt erreicht wird. Im Verbundprojekt kuLtig wurden anhand kulturangepasster, digitaler Lerndienstleistungen für die Aus- und Weiterbildung in China die Praktikabilität und Transferfähigkeit der entwickelten Lösungen aufgezeigt und wissenschaftlich begleitet.
Rechtliche Anforderungen an ein System zur Erreichbarkeitssteuerung.Miedzianowski, Nadine. In Gestaltung vernetzt-flexibler Arbeit. Beiträge aus Theorie und Praxis für die digitale Arbeitswelt, M. Daum, M. Wedel, C. Zinke-Wehlmann, H. Ulbrich (eds.). Berlin, 2020.
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Open Business Model Innovation via the Internet: How Digital Technologies Can Improve the Quality of Business Models.Bretschneider, Ulrich; Ebel, Philipp Alexander; Leimeister, Jan Marco. In International Journal of Innovation and Technology Management (IJITM), 18(2), p. 2040004. 2020.
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Increasingly, firms follow the strategy of open business model innovation via the Internet. In this form of digital innovation management, firms make use of Internet platforms that allow them to integrate external customers and other stakeholders for (re-)innovation of their business models. However, the used IT tools on these Internet platforms suffer from not being able to merge the content of multiple users in an adequate way, thus the resulting business models suffer from low degrees of quality. Against this backdrop, in this research, we propose to equip these Internet platforms with a wiki technology. This would allow users to add to each other’s content, to make changes or to correct mistakes. In our action design research (ADR), we could empirically validate that this leads to a higher quality in terms of business models’ degree of elaboration. Since research that focusses on the design of Internet-based open BMI is still neglected, our research contributes to the literature base by being the first that answers ongoing open calls for research on this phenomenon of interest.
AUDITOR: Einreichung des Zertifizierungsprogramms bei der deutschen Akkreditierungsstelle.Maier, Natalie; Lins, S.; Teigeler, A.; Roßnagel, Alexander; Sunyaev, A. In ZD-Aktuell, (9), p. 07119. 2020.
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Gesellschaft als digitale Sozialmaschine? Infrastrukturentwicklung von der Plattformökonomie zur kybernetischen Kontrollgesellschaft.Lamla, Jörn. In Mensch – Technik – Umwelt: Verantwortung für eine sozialverträgliche Zukunft. Festschrift für Alexander Roßnagel zum 70. Geburtstag, A. Hentschel, G. Hornung, S. Jandt (eds.), pp. 477–496. Nomos, Baden-Baden, 2020.
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NORA: Gestaltung von kollaborativen kontextsensitiven mobilen Anwendungen.Lena, Löber. In ZD-Aktuell, p. 07387. 2020.
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Arbeitsrecht und Covid-19.Miedzianowski, Nadine. In ZD-Aktuell, p. 07071. 2020.
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Investigating Smart Home Needs for Elderly Women Who Live Alone. An Interview Study.Dankwa, Nana Kesewaa. In HCI International 2020 - Late Breaking Posters - 22nd International Conference, HCI 2020, Copenhagen, Denmark, July 19-24, 2020, Proceedings, Part II, Vol. 1294 of Communications in Computer and Information Science, C. Stephanidis, M. Antona, S. Ntoa (eds.), pp. 32–38. Springer, 2020.
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Identity aspects such as gender, race, culture, and socio-economic status should be considered when technologies are designed with and for persons [9]. HCI research in ageing populations can benefit from considering the complexity of identity, use and context of older persons. This short paper draws attention to gender as an aspect of identity in working with ageing populations. It presents results from an interview study with elderly women who live alone in Germany. This study is part of a larger research project dedicated to innovating smart home technologies with and for elderly women who live alone. The research project has comprised of an “exploratory getting-to know each other” session, use experience of a smart speaker and interview studies. This paper presents insights from semi-structured interviews with 7 elderly women who live alone. These insights are also presented as design considerations for smart home technology for elderly women living alone. The study is the basis for further work with the elderly women, which are co-creation sessions to design smart home devices and develop prototypes.
Which Motivations Boost Idea Quality? Exploring the Impact of Customers’ Motives for Participating in Virtual Ideas Communities on Ideation Outcome.Bretschneider, Ulrich. In European Conference on Information Systems (ECIS). Marrakesch, Marokko, 2020.
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For practice it is important to leverage ideas of high quality from Virtual Ideas Communities (VIC). Therefore, firms that run such VIC have a strong interest in understanding which factors impact customers’ ideation outcome. This research investigates the influence of customers’ motivation factors for developing ideas on the quality of their ideas. So far, empirical studies that provide evidence on this association are neglected, although these insights would be highly beneficial for firms in their role as operator of VIC. Knowing the factors that have a positive influence will provide valuable insights into how to design effective incentive strategies that attract corresponding customer motivations and, in turn, will lead to higher levels of idea quality. In this research-in-progress paper we build a theoretical model explaining which of customers‘ motives for developing ideas have a positive impact on their ideation outcome.
How to Manage Crowdsourcing Platforms Effectively.Blohm, Ivo; Zogaj, Shkodran; Bretschneider, Ulrich; Leimeister, Jan Marco. In NIM Marketing Intelligence Review, 12(1), pp. 18–23. Sciendo, 2020.
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Crowdsourced tasks are very diverse – and so are platform types. They fall into four categories, each demanding different governance mechanisms. The main goal of microtasking crowdsourcing platforms is the scalable and time-efficient batch processing of highly repetitive tasks. Crowdsourcing platforms for information pooling aggregate contributions such as votes, opinions, assessments and forecasts through approaches such as averaging, summation, or visualization. Broadcast search platforms collect contributions to solve tasks in order to gain alternative insights and solutions from people outside the organization, and are particularly suited for solving challenging technical, analytical, scientific, or creative problems. Open collaboration platforms invite contributors to team up to jointly solve complex problems in cases where solutions require the integration of distributed knowledge and the skills of many contributors. Companies establishing crowdsourcing platforms of any type should continuously monitor and adjust their governance mechanisms. Quality and quantity of contributions, project runtime, or the effort for conducting the crowdsourcing project may be good starting points.
Diversifying Smart Home Contexts.Dankwa, Nana Kesewaa. In Proceedings of 18th European Conference on Computer-Supported Cooperative Work. European Society for Socially Embedded Technologies (EUSSET), 2020.
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Advances in smart home technological innovation over the years has seen an increase in consumer interests. However, research contexts for smart homes tend to skew towards “traditional”living and housing situations. Through my Ph.D. research, I raise awareness of the need to consider other user contexts and living situations. I do this by exploring opportunities for smart home innovation with elderly women who live alone. I work with the elderly women to understand their values, needs, and collaboratively create new smart home devices. The outcome of my research would be smart home devices that support the lives and contexts of elderly women living alone.
Camera vs. Cooperative VRU Collision Avoidance.Bachmann, Marek; Morold, Michel; Engel, Sebastian; Götz, Johann; David, Klaus. In 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), pp. 1–5. 2020.
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Verbraucherteilhabe durch digitale Bewertungspraktiken? Zur Soziologie der Infrastrukturen der Verbraucherpartizipation.Lamla, Jörn. In Verbraucherpolitik von unten. Konsumsoziologie und Massenkultur, K.-U. Hellmann, A. Klein, B. Baule (eds.), pp. 87–100. Springer VS, Wiesbaden, 2020.
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Stratifikation in der digitalen Bewertungsgesellschaft. Eine Fallanalyse der Folge "Nosedive" aus der SF-Serie "Black Mirror".Kropf, Jonathan. In Berliner Debatte Initial, 31(1), pp. 18–31. 2020.
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Doing Agile vs. Being Agile - Understanding Their Effects to Improve Agile Work.Eilers, Karen; Simmert, Benedikt; Peters, Christoph. In International Conference on Information Systems (ICIS). ICIS Proceedings, 2020.
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Companies show a growing demand in corporate agility. The effects of so-called doing and being agile are the key for positive outcomes in agile work. Scrum is used by companies to make them more agile. The present study examines the interaction of doing agile (leadership, work design) and being agile (individual characteristics, empowerment) in relation to satisfaction and commitment based on an online survey of 129 Scrum development team members. The results show that work design and leadership impact empowerment and that the latter leads to both job satisfaction and commitment. Team orientation has no effect. Openness for new actions moderates the relationship between work design and the outcome variables. The results can be used in practice to increase the satisfaction and commitment within Scrum. They provide an insight into the impact structure within Scrum and are thus also the basis for future research.
Geschlechterforschungen zwischen Reflexion und Reproduktion bestehender Bilder von Informatik.Bläsing, Lisa Marie; Draude, Claude. In ZSE Zeitschrift für Soziologie der Erziehung und Sozialisation, 40(3), pp. 276–295. Beltz Juventa, 2020.
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Seit Jahrzehnten wird die geschlechtliche Verteilung von Studierenden in MINT bzw. der Informatik aus unterschiedlichen Perspektiven in den Blick genommen. Aus Sicht geschlechtertheoretischer Forschungen werden dafür unter anderem geschlechtliche Codierungen der Fächer gesehen, in denen sich alltägliches Geschlechterwissen und strukturelle Ungleichheiten manifestieren. In Bildern und Annahmen, die Schüler*innen und Studierende über die jeweiligen Fächer haben, werden diese vergeschlechtlichten Codierungen sichtbar. Der Beitrag fasst Ergebnisse ausgewählter Literatur zu Bildern von Informatik zusammen. Sie zeigen, wie die Befragten Informatik als männliches, weißes und westliches Fach konstruieren, welches Zugangs- und Aufstiegsmöglichkeiten mindestens einschränkt und ‚das Andere‘, also beispielsweise Frauen/Weiblichkeit, alles nicht-westliche, nicht-weiße – bzw. was diesen Begriffen zugeschrieben wird – abwertet. Beiträge zu Informatikbildern laufen jedoch Gefahr, bestehende Bilder zu reproduzieren. Deshalb werden in der untersuchten Literatur Leerstellen und Perspektiven aufgezeigt, die zu einer intersektionalen, reflektierten Forschung über Informatik(bilder) beitragen können.

2019[ to top ]

Angry or Climbing Stairs? Towards Physiological Emotion Recognition in the Wild.Heinisch, J. S.; Anderson, C.; David, K. In 2019 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops), pp. 486–491. IEEE, Kyoto, Japan, 2019.
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Physiological responses to emotions play a vital role in the field of emotion recognition. Machine-learning models implemented in wristbands or wearables, already exploit unique patterns in physiological responses to provide information about humans emotional states. However, such responses are commonly interfered and overlapped by physical activities, posing a challenge for emotion recognition “in-the-wild”. In this paper, we address this challenge by investigating new features based on the linear regression line and machine-learning models for emotion recognition. We triggered emotions through audio samples and recorded physiological responses from 18 participants before and while performing physical activities. We trained models with the least strenuous physical activity (sitting) and tested with the remaining, more strenuous ones. For three different emotion categories, we achieved classification accuracies up to 67%. Considering individual activities and participants, we achieve up to 73% classification accuracy, indicating the viability of emotion recognition models and features non-sensitive to interferences caused by physical activities.
Datenbrille für komplexe Umstiege: Wie gebrauchstauglich sind innovative Informationsdienste? Ergebnisse des Forschungsprojekts RadAR+: Reiseassistenzsystem für dynamische Umgebungen auf Basis von "Augmented Reality".Kolbe, B.; Schmidt, L.; Wagner, N.; Hegenberg, J.; Inninger, W.; Mack, N.; Stegemann, M. In Der Nahverkehr, 37(9), pp. 48–55. 2019.
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Mobilität präsentiert sich in Form von Alltags- und Versorgungsmobilität, als Freizeit-, Messe- und Touristenverkehr sowie in vielschichtigen Wirtschaftsbewegungen von Unternehmen und Dienstleistern. Mobilität ist ein Grundbedürfnis und sichert neben der Teilhabe am öffentlichen Leben die Erreichbarkeit des Arbeitsplatzes, also die Teilhabe am ökonomischen Leben. Die Sicherung von Mobilität sowie eine effiziente Ausgestaltung zur Information und Nutzung unter den technischen Rahmenbedingungen sind Aufgaben mit hoher gesellschaftlicher Verantwortung, zu deren Lösung das Projekt RadAR+ einen wesentlichen Beitrag leistete - durch die Entwicklung eines adaptiv lernenden Mobilitätsagenten unter Verwendung von Augmented Reality.
Yes, We Can! Blockchain Based Crowdfunding and Crowdworking.Billert, Matthias. In Pre-ICIS SIGBPS Workshop on Blockchain and Smart Contract (Pre-ICIS). 2019.
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In the current process of crowdfunding and crowdworking, many criteria-based conditions must be considered on different platforms. Assignments must be initiated for each platform, which costs time, money and resources. In order to counteract these challenges and reduce transactions, we developed a blockchain-based platform using a design-oriented approach. This platform accompanies the process from requirements to self-executing, event- and condition-controlled contracts in a partially automated manner. Based on the literature of crowdfunding, crowdworking and blockchain-based smart contracts, we derived requirements for a platform creation. While we contribute to the literature by eliciting design-oriented requirements, we show practical implications by building a blockchain-based platform concept for facilitating a more efficient combined crowdfunding and crowdworking process by reducing transactions.
Die Digitalisierungsstraße für die Stadt der Zukunft.Billert, Matthias; Peters, Christoph. In Innovative Verwaltung, 41(7-8/2019), pp. 172–189. Springer Fachmedien, Wiesbaden, Germany, 2019.
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Vorgestellt wird ein innovatives, multimediales Portal, die sogenannte Digitalisierungsstraße, mit dem die Kompetenzen der Bürgerinnen und Bürger kollaborativ in die Entwicklung neuer städtischer Dienstleistungen eingebunden werden können.
Doing a Doctorate in BISE in Germany, Austria and Switzerland? A Debate on the Why, What and How.Leimeister, Jan Marco; Becker, Jörg; Heinzl, Armin; Winter, Robert; Gefen, David. In Business & Information Systems Engineering, 61(6), pp. 759–766. Springer Fachmedien, Wiesbaden, Germany, 2019.
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Pilotstudie zur Roboterunterstützung des Menschen bei manueller Montage.Hegenberg, J.; Schimpf, D. W.; Fischer, N.; Schmidt, L. In Arbeit interdisziplinär analysieren - bewerten - gestalten: 65. Kongress der Gesellschaft für Arbeitswissenschaft (Dresden 2019), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.9.1). GfA-Press, Dortmund, 2019.
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In diesem Beitrag wird ein Konzept zur Integration einer kollaborativen Roboterunterstützung an einem manuellen Montagearbeitsplatz vorgestellt. Dazu wurde exemplarisch ein Arbeitsplatz in der Wellenvormontage der Getriebefertigung in der Automobilindustrie betrachtet. Die Arbeitsprozesse bei der manuellen Montage wurden analysiert und das darauf basierende Konzept in einem vollfunktionsfähigen Mock-up umgesetzt, welcher die Montage ohne und mit Roboterunterstützung ermöglicht. Auf Basis dieses Mock-ups wurde eine Nutzerstudie (n = 8) durchgeführt, die die Ergonomie und Gebrauchstauglichkeit des Konzepts sowie das wirtschaftliche Potenzial der Roboterunterstützung evaluiert.
Datenschutz-Folgenabschätzung im Zuge der Gesetzgebung – Das Verfahren nach Art. 35 Abs. 10 DS-GVO.Geminn, Christian; Johannes, Paul Christian. In ZD, (10), A. Roßnagel (ed.), pp. 435–440. 2019.
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Stakeholderbezogene und rechtliche Anforderungen an ein Erreichbarkeitsmanagement-System.Miedzianowski, N.; Saternus, Z.; Staab, K. In ZD-Aktuell, (15), p. 04381. 2019.
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Engineering Publics: The Different Modes of Civic Technoscience.Dickel, Sascha; Schneider, Christoph; Thiem, Carolin; Wenten, Klara-Aylin. In Science and Technology Studies Journal. The Many Modes of Citizen Science, 32(2), pp. 8–23. 2019.
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Hybrid Intelligence, Business & Information Systems Engineering.Dellermann, Dominik; Ebel, Philipp; Söllner, Matthias; Leimeister, Jan Marco. In Business & Information Systems Engineering, 61(5), pp. 637–643. 2019.
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Research has a long history of discussing what is superior in predicting certain outcomes: statistical methods or the human brain. This debate has repeatedly been sparked off by the remarkable technological advances in the field of artificial intelligence (AI), such as solving tasks like object and speech recognition, achieving significant improve- ments in accuracy through deep-learning algorithms (Goodfellow et al. 2016), or combining various methods of computational intelligence, such as fuzzy logic, genetic algorithms, and case-based reasoning (Medsker 2012). One of the implicit promises that underlie these advancements is that machines will 1 day be capable of performing complex tasks or may even supersede humans in performing these tasks. This triggers new heated debates of when machines will ultimately replace humans (McAfee and Brynjolfsson 2017). While previous research has proved that AI performs well in some clearly defined tasks such as playing chess, playing Go or identifying objects on images, it is doubted that the development of an artificial general intelligence (AGI) which is able to solve multiple tasks at the same time can be achieved in the near future (e.g., Russell and Norvig 2016). Moreover, the use of AI to solve complex business problems in organizational con- texts occurs scarcely, and applications for AI that solve complex problems remain mainly in laboratory settings instead of being implemented in practice. Since the road to AGI is still a long one, we argue that the most likely paradigm for the division of labor between humans and machines in the next decades is Hybrid Intelligence. This concept aims at using the complementary strengths of human intelligence and AI, so that they can perform better than each of the two could separately (e.g., Kamar2016).
Multi-objective Optimisation in Hybrid Collaborating Adaptive Systems.Lesch, V.; Krupitzer, C.; Tomforde, S. In ARCS Workshop 2019; 32nd International Conference on Architecture of Computing Systems, pp. 1–8. 2019.
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On Learning in Collective Self-Adaptive Systems: State of Practice and a 3D Framework.D’Angelo, M.; Gerasimou, S.; Ghahremani, S.; Grohmann, J.; Nunes, I.; Pournaras, E.; Tomforde, S. In 2019 IEEE/ACM 14th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS), pp. 13–24. 2019.
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Selbstbestimmung und Verbraucherschutz in der Datenökonomie.Lamla, Jörn. In Aus Politik und Zeitgeschichte, 69(24-26), pp. 49–54. 2019.
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More Than a Need for Knowledge: Understanding Drivers for Knowledge Seeking and Knowledge Sharing Behavior in Online Communities.Gerken, Maike; Bretschneider, Ulrich; Hülsbeck, Marcel. In International Conference on Information Systems (ICIS). Munich, Germany, 2019.
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Knowledge seeking is the default activity in online communities and therefore important for their functioning. Existing research studies on why members seek knowledge overlook other factors than a simple need for knowledge, resulting in an extremely narrow body of knowledge. We propose that a need for advice can increase knowledge seeking and is further shaped by perceptions of reciprocity, self-esteem, and identification with the community. By surveying 186 respondents from 34 large online communities and applying OLS regression analyses, we find that knowledge seeking is driven by need for advice and identification, but not reciprocity. The results further show that members with high self-esteem seek less knowledge. Yet, the decision to seek knowledge depends on the level of self-esteem and this is predicted by need for advice. Our results contribute to the currently sparse body on knowledge seeking and add to the realization of necessary design attributes of online communities.
The Impact of Private and Work-related Smartphone Usage on Interruptibility.Anderson, Christoph; Heinisch, Judith S.; Ohly, Sandra; David, Klaus; Pejovic, Veljko. In Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, of UbiComp/ISWC ’19 Adjunct, pp. 1058–1063. ACM, London, United Kingdom, 2019.
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In the last decade, the effects of interruptions through mobile notifications have been extensively researched in the field of Human-Computer Interaction. Breakpoints in tasks and activities, cognitive load, and personality traits have all been shown to correlate with individuals' interruptibility. However, concepts that explain interruptibility in a broader sense are needed to provide a holistic understanding of its characteristics. In this paper, we build upon the theory of social roles to conceptualize and investigate the correlation between individuals' private and work-related smartphone usage and their interruptibility. Through our preliminary study with four participants over 11 weeks, we found that application sequences on smartphones correlate with individuals' private and work roles. We observed that participants engaged in these roles tend to follow specific interruptibility strategies - integrating, combining, or segmenting private and work-related engagements. Understanding these strategies breaks new ground for attention and interruption management systems in ubiquitous computing.
Chancen und Herausforderungen des digitalen Lernens Methoden und Werkzeuge für innovative Lehr-Lern-Konzepte. Leimeister, J.-M.; David, Klaus. In of Kompetenzmanagement in Organisationen. Springer-Verlag, Berlin, Heidelberg, 2019.
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Vom industriellen Massenkonsum zum digitalisierten Individualkonsum?Lamla, Jörn. In Transformationen des Konsums. Vom industriellen Massenkonsum zum individualisierten Digitalkonsum, B. Baule, D. Hohnsträter, S. Krankenhagen, J. Lamla (eds.), pp. 109–118. Nomos, Baden-Baden, 2019.
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Early Pedestrian Movement Detection Using Smart Devices Based on Human Activity Recognition.Botache, Diego; Dandan, Liu; Bieshaar, Maarten; Sick, Bernhard. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik -- Informatik für Gesellschaft (Workshop-Beiträge), C. Draude, M. Lange, B. Sick (eds.), pp. 229–238. Gesellschaft für Informatik e.V., Bonn, 2019.
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Social studies of scholarly life with sensor-based ethnographic observations.Kibanov, Mark; Heiberger, Raphael H.; Rödder, Simone; Atzmueller, Martin; Stumme, Gerd. In Scientometrics. 2019.
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Social network analysis is playing an increasingly important role in sociological studies. At the same time, new technologies such as wearable sensors make it possible to collect new types of social network data. We employed RFID tags to capture face-to-face interactions of participants of two consecutive Ph.D. retreats of a graduate school on climate research. We use this data in order to explore how it may support ethnographic observations and to gain further insights on scholarly interactions. The unique feature of the data is the opportunity to distinguish short and long conversations, which often have a different nature from a sociological point of view. Furthermore, an advantage of this data is the availability of socio-demographic, research-related, and situational attributes of participants. We show that, even though an interaction partner is often found rather randomly during coffee breaks of retreats, a strong homophily between participants from the same institutions or research areas exists. We identify cores of the networks and participants who play ambassador roles between communities, e.g., persons who visit the retreat for the second time are more likely to be ambassadors. Overall, we show the usefulness and potential of RFID tags for scientometric studies.
Die neuen kulturellen Grenzen des Konsums. Entscheidungsarchitekturen und ihre verbraucherwissenschaftliche Reflexion.Lamla, Jörn. In Konsumkultur. Eine Standortbestimmung, D. Hohnsträter, S. Krankenhagen (eds.), pp. 45–58. Kadmos, Berlin, 2019.
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Participatory Design of Smart Home Technology: self-reflections of my work as a black African migrant HCI researcher.Dankwa, Nana Kesewaa. In GenderIT.org. 2019.
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Offline or online. Mine!Dankwa, Nana Kesewaa. In Many Worlds. Many Nets. Many Visions. Critical Voices, Visions and Vectors for Internet Governance., K. Mosene, M. C. Kettemann (eds.), p. 25. Alexander von Humboldt Institute for Internet and Society (HIIG) and Leibniz Institute for Media Research / Hans-Bredow Institut (HBI), 2019.
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Dienstleistungsengineering und -management Data-driven Service Innovation. Leimeister, Jan Marco. Zweite, . Springer Gabler, Berlin, Heidelberg, 2019.
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Einführung: Die Zukunft der Datenökonomie. Zwischen Geschäftsmodell, Kollektivgut und Verbraucherschutz.Lamla, Jörn; Hess, Thomas. In Die Zukunft der Datenökonomie. Zwischen Geschäftsmodell, Kollektivgut und Verbraucherschutz, C. Ochs, M. Friedewald, T. Hess, J. Lamla (eds.), pp. 1–7. Springer VS, Wiesbaden, 2019.
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GI Edition Proceedings Band 294 INFORMATIK 2019. Kassel, Deutschland.David, Klaus; Geihs, Kurt; Lange, Martin; Stumme, Gerd. In Vol. P-294 of LNI. Gesellschaft für Informatik (GI), 2019.
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Gender in MINT unterrichten – Hochschuldidaktische Ansätze.Mangelsdorf, Marion; Draude, Claude. In Handreichung Gendering MINT. Vernetzung und Austausch von Gender-Perspektiven in den Natur- und Technikwissenschaften, M. Mangelsdorf (ed.), pp. 61–81. Universität Freiburg, Förderung Bundesministeriums für Bildung und Forschung, Förderkennzeichen 01FP1453, 2019.
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Emerging Self-Integration through Coordination of Autonomous Adaptive Systems.Lesch, V.; Krupitzer, C.; Tomforde, S. In 2019 IEEE 4th International Workshops on Foundations and Applications of Self* Systems (FAS*W), pp. 6–9. 2019.
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Designing for Social Presence and Leveraging the Outcomes of Customer Service Chatbots.Janson, Andreas; Degen, Oliver; Schwede, Melanie. In Academy of Management Annual Meeting (AOM). Boston, Massachusetts, USA, 2019.
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Chatbots are innovative text-based dialogue systems that are oftentimes used in digital customer service encounters, since chatbots offer a lot of potential to optimize the relationship with the customer. However, chatbots face various problems, such as low adoption and satisfaction rates as well as other negative reactions from the customer. Companies therefore need to consider different design features when developing their chatbots. Key for designing chatbots is the use of anthropomorphic design elements. In this study, we examine the two anthropomorphic design elements of personification, which includes a human like appearance of the chatbot, and socially oriented communication, which means a more sensitive and extensive communication behavior. We tested the influence of the two design elements on social presence, satisfaction, trusting beliefs and empathy. The results of our experiment support a significant influence of the two anthropomorphic design elements on social presence. In addition, our findings show the central role of social presence concerning chatbot perceptions. First, social presence has a strong direct influence on trusting beliefs, empathy and satisfaction. Second, social presence acts as a mediator for both anthropomorphic design elements on satisfaction with a chatbot. The derived implications provide a theory for understanding anthropomorphic design elements related to chatbots and we offer design principles for practitioners that enable more effective chatbot implementations.
Take the Wheel - Technology-driven Change in the Energy Sector.Li, Mahei Manhai; Müller, Jennifer; Ernst, Sissy-Josefina; Peters, Christoph. In International Conference on Information Systems (ICIS). 2019.
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Hybrid Intelligence.Dellermann, Dominik; Ebel, Philipp; Söllner, Matthias; Leimeister, Jan Marco. In Business & Information Systems Engineering, 61(5), pp. 637–643. Springer Fachmedien, Wiesbaden, Germany, 2019.
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Radically rethinking the way crowdfunding works: the case of JumpStartFund and the Hyperloop.Lipusch, Nikolaus; Dellermann, Dominik; Ebel, Philipp; Bretschneider, Ulrich; Leimeister, Jan Marco. In International Journal of Entrepreneurial Venturing, 11(6), pp. 598–619. 2019.
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In this research, we explore the unique case of JumpStartFund, a new crowdfunding platform that is used to develop the Hyperloop project. To this end, we employ an in-depth single case study to examine the participation architecture of the platform as well as the Hyperloop campaign content, based on which we derive a new crowdfunding model. The derived crowdfunding model differs from existing crowdfunding models in that it allows entrepreneurs to develop their business with the crowdmore actively. Our research has important implications for research and practice. First, we introduce a new crowdfunding model that expands the boundaries of existent models. Second, we explain how our model helps to more efficiently leverage the potential inherent in the crowd thereby redefining entrepreneurial success within crowdfunding. Third, we discuss how our findings contribute to existent research within the context of crowdsourcing.
Evaluation der Datenschutz-Grundverordnung aus Verbrauchersicht. Geminn, Christian; Roßnagel, Alexander. Veröffentlichungen der Verbraucherzentrale Bundesverbands e.V. (vzbv), Berlin, 2019.
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IMPACT: Neues Forschungsprojekt zu sozialen Folgen und rechtlicher Gestaltung der Kommunikation mit künstlichen Sprachassistenten.Geminn, Christian. In ZD-Aktuell, p. 06596. 2019.
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Developing a Production Structure Model using Service-Dominant Logic – A hypergraph-based Modeling Approach.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In INFORMS International Conference on Service Science (ICSS). 2019.
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To make a fundamental shift towards value orientation, manufacturing companies strategically move to integrate services into their portfolio. While manufacturing firms rely on production information systems as the backbone of their operations, these systems are based on product structure models (e.g., bill of materials). This poses a problem because services do not adhere to the goods-dominant perspective of product structures. To solve this divide, this paper proposes an integrative mathematical model for both production systems and service systems. This model draws upon concepts of service-dominant logic and is based on hypergraph theory. To illustrate that the production structure model includes both product structures and process structures, we further demonstrate that the production structure model can be transformed into either. Therefore, our theoretical contribution lies in introducing a structural model for production systems that is compatible with structures of a service system model. For practice, this model enables the development of production information systems that can plan and control products, services and hybrids.
The Future of Human-AI Collaboration: A Taxonomy of Design Knowledge for Hybrid Intelligence Systems.Dellermann, Dominik; Calma, Adrian; Lipusch, Nikolaus; Weber, Thorsten; Weigel, Sascha; Ebel, Philipp. In Hawaii International Conference on System Sciences (HICSS). 2019.
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Recent technological advances, especially in the field of machine learning, provide astonishing progress on the road towards artificial general intelligence. However, tasks in current real-world business applications cannot yet be solved by machines alone. We, therefore, identify the need for developing socio-technological ensembles of humans and machines. Such systems possess the ability to accomplish complex goals by combining human and artificial intelligence to collectively achieve superior results and continuously improve by learning from each other. Thus, the need for structured design knowledge for those systems arises. Following a taxonomy development method, this article provides three main contributions: First, we present a structured overview of interdisciplinary research on the role of humans in the machine learning pipeline. Second, we envision hybrid intelligence systems and conceptualize the relevant dimensions for system design for the first time. Finally, we offer useful guidance for system developers during the implementation of such applications.
Das Sanktionsregime der Datenschutz-Grundverordnung – Auswirkungen auf Unternehmen und Datenschutzaufsichtsbehörden, Schriftenreihe Forum Privatheit und selbstbestimmtes Leben in der digitalen Welt. Martin, N.; Bile, T.; Nebel, M.; Bieker, F.; Geminn, C. L.; Roßnagel, Alexander; Schöning, C. Fraunhofer ISI, Karlsruhe, 2019.
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Kommentierung von §§ 5, 7, 10.),14, 14a, 19, 22, 23, 23a, 23b, 23c, 25a, 48a, 48b Bundesimmissionsschutzgesetzes.Hentschel, M. In Führ, M. (Hrsg.), Gemeinschaftskommentar zum Bundes-Immissionsschutzgesetz, A. Roßnagel (ed.). Carl Heymanns Verlag, Köln, 2019.
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Privacy.Matzner, Tobias; Ochs, Carsten. In Internet Policy Review. Journal on Internet Regulation, 8. 2019.
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This contribution provides a short introduction into the conceptual and socio-technical development of privacy. It identifies central issues that inform and structure current debates as well as transformations of privacy spurred by digital technology. In particular, it highlights central ambivalences of privacy between protection and de-politicization and the relation of individual and social perspectives. A second section connects these issues to the influential texts and discussions on digital privacy. In particular, we will demonstrate privacy in digital societies is to be conceived in a novel way, since contemporary socio-technical conditions unsettle central assumptions of established theories: forms of perceptions, social structure or individual rights. Thus, a final third paragraph summarises theoretical innovations triggered by this situation – especially research from computer science to the social sciences and law and philosophy highlighting the requirement to take groups, social relations and broader socio-cultural contexts into account.
Das Sanktionsregime der Datenschutz-Grundverordnung- Auswirkungen auf Unternehmen und Datenschutzaufsichtsbehörden, White Paper des Forums Privatheit und selbstbestimmtes Leben in der digitalen Welt. Martin, N.; Bile, Tamer; Nebel, Maxi; Bieker, F.; Geminn, Christian; Schöning, C. A. Roßnagel (ed.). Karlsruhe, 2019.
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Feldstudie zur physiologischen und videogestützten Analyse von Nutzerzustand und -verhalten bei der Orientierung und Navigation am Frankfurter Flughafen.Klose, E.; Funk, J.; Hegenberg, J.; Schmidt, L. In Zeitschrift für Arbeitswissenschaft, 73(1), pp. 45–57. 2019.
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Die vorliegende Studie untersucht das Verhalten und den Zustand von Menschen während der Navigation durch den Frankfurter Flughafen. Dafür absolvierten die zwölf Teilnehmer drei flughafentypische Navigationsaufgaben, während Gangparameter, die Herz-Kreislauf-Aktivität und die Blickbewegung aufgezeichnet wurden. Anschließend wurde die videogestützte Retrospektive-Think-Aloud-Methode genutzt, um einen Einblick in die Gedanken und Strategien der Probanden zu bekommen. Die vielfältigen sowohl quantitativ als auch qualitativ analysierten Daten liefern Erkenntnisse über das Gehverhalten, die Herzrate und die Herzratenvariabilität sowie das Informationssuch- und -aufnahmeverhalten. Außerdem werden Problemstellen bei der Orientierung und Navigation am Flughafen ermittelt. Die Ergebnisse werden diskutiert und auf den Anwendungsbereich der Reiseassistenz angewendet, um in einem menschzentrierten Ansatz den Informationsbedarf für ein Augmented-Reality-Reiseassistenzsystem zu spezifizieren und Gestaltungsempfehlungen dafür abzuleiten. Praktische Relevanz: Es wird eine Vielzahl an Daten aus einer Feldstudie unter natürlichen Bedingungen zur Verfügung gestellt, mithilfe derer Nutzerverhalten und -zustand bei der Navigation beschrieben und analysiert werden können. Der Versuchsraum - ein komplexer Verkehrsknotenpunkt - ist für diverse Anwendungsbereiche von Interesse. Die vorgestellten Daten können auch als Referenzdaten für ähnliche Studien von Nutzen sein, z. B. um zu vergleichen, ob und inwieweit sich das Verhalten und der Zustand von Reisenden durch eine Navigationsunterstützung verändert.
Digitale Servicesysteme.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco; Zierau, Naim. In Digitale Transformation gestalten - Geschäftsmodelle, Erfolgsfaktoren, Checklisten, Zweite, , O. Gassman, P. Sutter (eds.), pp. 33–41. Carl Hanser Verlag GmbH & Co. KG, München, 2019.
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Text Presentation for Augmented Reality Applications in Dual-Task Situations.Klose, E. M.; Mack, N. A.; Hegenberg, J.; Schmidt, L. In 26th IEEE Conference on Virtual Reality and 3D User Interfaces (Osaka 2019), R. Teather, Y. Itoh, J. Gabbard, F. Argelaguet, A.-H. Olivier, D. Keefe (eds.), pp. 636–644. IEEE, Piscataway, 2019.
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We investigate how reading text in augmented reality (AR) glasses and the simultaneous execution of three real-world tasks interfere with each other. The three tasks are a visual stimulus-response task (VSRT), a simple walking task and a walking obstacle course. Also, we investigate the effects of different AR text positions on primary task and reading performance as well as subjective preference. We propose a novel out of sight body-locked text placement for AR text presentation to be used in dual-task situations and compare it to head-locked text placement, each in two heights. AR reading affected performance in all tasks and reading speed was affected in all dual-task conditions. Participants subjectively preferred the body-locked text presentation, while objective measures do not reflect that preference. Differences between the tasks and several interaction effects between task and AR text placement demonstrate the necessity to carefully consider the context of use when designing AR reading UIs. The presented study with 12 participants provides insights into the effects of AR glasses usage in dual-task situations and several design recommendations are derived from the results.
Mit benutzerzentrierter Entwicklung zur Integration von sozialen Aspekten in die Projektarbeit.Klose, E. M.; Ni, I.; Schmidt, L. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik - Informatik für Gesellschaft (Workshop-Beiträge), of Lecture Notes in Informatics, C. Draude, M. Lange, B. Sick (eds.), pp. 447–463. Gesellschaft für Informatik e. V, Bonn, 2019.
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Ein benutzerzentrierter Entwicklungsansatz kann in Technologieentwicklungsprojekten dazu genutzt werden, um nachhaltige, sozial verantwortliche Gestaltungslösungen zu fördern. Dieser Ansatz rückt den Menschen und seine Aufgaben in den Fokus der technischen Systementwicklung und bezieht Benutzer sowie weitere Beteiligte von Anfang an fortlaufend in den Entwicklungsprozess ein. So wird sichergestellt, dass die entwickelten Systeme, Dienstleistungen und Produkte eine hohe Gebrauchstauglichkeit und Akzeptanz aufweisen und dass auch langfristige Folgen der Nutzung betrachtet werden. Dieser Beitrag gibt einen Überblick über das methodische Vorgehen mit diesem Ansatz und beschreibt am Beispiel eines mehrjährigen Verbundforschungsprojektes die konkrete praktische Anwendung mit exemplarischen Methoden.
(DIN SPEC 33453) Development of digital service systems. Entwicklung digitaler Dienstleistungssysteme. Industrie Norm 33453, Deutsche. Beuth publishing DIN, 2019.
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Was wird aus den Innovationen der Datenschutz-Grundverordnung?Geminn, Christian. In ZD-Aktuell, p. 04361. 2019.
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Linking Strategy and Operations using a Service Business Model – a hypergraph theory-based approach.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In International Research Symposium on Advancing Service Research and Practice (QUIS). Karlstad, Sweden, 2019.
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Business models (BM) have become increasingly important and versatile abstract tools to describe businesses on both, a strategic, as well as operational level (Wirtz et al. 2015). These BMs are used to understand what a business does to remain competitive, strategically (Johnson et al. 2008). Existing research (Johnson et al. 2008; Wirtz et al. 2015) identified the importance of BMs for the success of businesses. Also, practice revealed that financially successful companies ascertain twice the level of importance than less successful companies (IBM, 2007). A BM is a conceptual and structural implementation of a business strategy and the foundation of business processes (Osterwalder and Pigneur, 2002). BMs include a strategy, input factors, processes, with an underlying financial model to ensure the profitability. In recent years BMs have become synonymous with entire companies. Literature shows a heterogeneous abstraction of BMs, sometimes referring to BMs as business unit or products (Wirtz et al. 2015). Service systems literature shows similar structures, with service systems referring to exchanges on an individual level, among business units or entire ecosystems (Chandler and Lusch 2015). We propose that a service systems perspective can systematically model businesses and capture its inherent complexities (Peters et al. 2015). The service business model (SBM) includes (1) the value proposition, which is the firm’s offering to the customer; (2) the value creation and delivery mechanisms, reflecting the value chain; (3) value capture and analysis of the BM and its constituent elements to understand how the firm generates profit. Our model, thus, captures the holistic characteristic of BM, while retaining the detailed information on how the business is constructed. Businesses are confronted with a complex, digitalized world, in which important service innovations are continuously emerging, which need to be designed and linked to the BM of a company, thus addressing the strategy to execution gap (Kaplan and Norton 2009). Typical BM tools, such as the business model canvas (Osterwalder et al. 2005), only provide a descriptive framework for structuring businesses, missing the interrelations of its BM elements. This is important for operational decision makers, who implement new service innovations. In sum, without a SBM that relates the high level strategic information to the detailed operations perspective, BMs only reflect half the picture. Hence, we develop a hypergraph theory-based underlying model for businesses to understand how the business works both from a strategic perspective, as well as from a detailed operational perspective. Our SBM makes value creation visible, relying on a systems perspective linking multi-dimensional input factors with set of activities and actors and thus capturing value proposition, value creation and delivery and value capture mechanisms (Li & Peters 2018). Attached table shows an overview of our SBM, which relies on a formally model (Li et al. 2018). It represents a base structure of businesses and can be used for operational purposes too (e.g.: scheduling, planning and cost analyses) and thus enables a high level strategic perspective to be integrated into the operational perspective, bridging the gap between strategy and execution for successful businesses.
Augmented-Reality-basierte Assistenz für die Mensch-Roboter-Kollaboration.Hegenberg, J. BAuA, Dortmund, 2019.
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Die Digitalisierungsstraße für die Stadt der Zukunft – Kollaborative Entwicklung eines Portals für bürger-initiierte Dienstleistungsentwicklung im Kontext einer Smart City.Billert, Matthias Simon; Peters, Christoph. In HMD Praxis der Wirtschaftsinformatik, 56, D. Siemon; S. Robra-Bissantz (eds.), pp. 172–189. 2019.
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Rechtsverträgliche und qualitätszentrierte Gestaltung für "KI made in Germany".Knote, Robin; Thies, Laura Friederike; Söllner, Matthias; Jandt, Silke; Roßnagel, Alexander; Leimeister, Jan Marco. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge), Vol. Lecture Notes in Informatics (LNI) - Proceedings: Series of the Gesellschaft für Informatik (GI), C. Draude, M. Lange, B. Sick (eds.), pp. 421–424. Gesellschaft für Informatik (GI), Bonn, Germany, 2019.
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USA: Stand der Modernisierungsbemühungen des Rechtsrahmens zur IT-Sicherheit im Fahrzeug.Geminn, Christian; Müller, Johannes. In ZD-Aktuell, (20), p. 06895. 2019.
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Diffusion von digitalen Technologien und Trends in Familienunternehmen.Bretschneider, Ulrich; Heider, Anne; Rüsen, Tom; Hülsbeck, Marcel. In Handbuch Digitale Wirtschaft, T. Kollmann (ed.). Springer Gabler, Wiesbaden, Germany, 2019.
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Der vorliegende Beitrag beschreibt den Diffusionsprozess von digitalen Technologien und Trends in Familienunternehmen (FU). Die Diffusion von digitalen Technologien und Trends in FU gestaltet sich wegen des Einfluss der Eigentümerfamilie auf das FU im Vergleich zu Nicht-FU grundlegend anders. Eigenschaften der Familie sowie des FU und der digitalen Technologien und Trends wirken sich zugleich negativ auf die Geschwindigkeit, mit der digitale Technologien und Trends den Diffusionsprozess im FU durchlaufen, aus. Dagegen entwickeln FU spezifische Strategien, die dabei helfen, diese Zeitbarrieren zu umgehen.
Agile Dienstleistungsentwicklung in einer Smart City – Eine Plattform zur systematischen Erstellung digitaler bürgernaher Dienstleistungen.Billert, Matthias Simon; Peters, Christoph; Leimeister, Jan Marco. In Kooperative Dienstleistungen. Forum Dienstleistungsmanagement., M. Bruhn, K. Hadwich (eds.), pp. 431–447. Springer Gabler, Wiesbaden, Germany, 2019.
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Die Digitalisierungsstraße ist ein Konzept zur systematischen Entwicklung digitaler bürgernaher Dienstleistungen für eine Stadt, die technisch auf einer erfolgreich an die Stadtverwaltung angebundene Plattform basiert. Sie besteht aus drei Schritten, in denen Bürger unter Verwendung eines multimedialen, bürgerzentrierten Ansatzes ihre Dienstleistungsidee beschreiben, visualisieren und anschließend präsentieren. Erstmalig werden diese Schritte integriert und medienbruchfrei auf einer Plattform auf Basis von Scrum und der webbasierten Plattform GitLab zur Verwaltung agiler Softwareprojekte realisiert.
Weck den Herkules in dir – bürger-initiierte Dienstleistungen.Billert, Matthias Simon; Peters, Christoph; Leimeister, Jan Marco; Niering, Peggy; Hartmann, Christina. In Handlungsbroschüre zum Verbundforschungsprojekt Civitas Digitalis - Digitale und Crowd-basierte Dienstleistungssysteme zur Schaffung zukunftsfähiger und lebenswerter Lebensräume 2020. ITeG Technical Reports – Wissenschaftlichen Zentrum für Informationstechnik-Gestaltung (ITeG) an der Universität Kassel, 8, E. Bittner; J. M. Leimeister; H. Krcmar; C. Peters (eds.), pp. 12–39. kassel university press, Kassel, Germany, 2019.
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From Service Systems Engineering to Service Innovation - A Modeling Approach.Li, Mahei Manhai; Peters, Christoph. In European Conference on Information Systems (ECIS). 2019.
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Due to the advent of digitization, service innovation has become even more important for both business and service research alike. Current service systems engineering approaches have employed a recombinant perspective that follows innovation mechanisms to leverage existing company resources for new service innovations. Employing these innovation mechanisms is still challenging, since there is little support on how to structure and identify these mechanisms. We propose a model-based service system engineering approach to structure existing resources into one formal model, enabling the formalization of service innovation mechanisms. The formalized service innovation mechanisms allow for a graphical illustration and enable future research to apply functions to analyze how innovation impacts entire or specific parts of service systems. Furthermore, the mathematical model enables an object-oriented value-driven perspective on service systems and is basis for graphical software tools. We contribute to literature by formalizing service innovations and its mechanisms in the context of service systems and by combining concepts of service innovation and service systems engineering. We do so by a) formalizing service innovation mechanisms and b) demonstrating the application of formal service innovations along one specific software implementation case. For practice, the service system model can with simulating the effects of service innovations.
Mensch-Maschine-Kollaboration: Grundlagen, Gestaltungsherausforderungen und Potenziale für verschiedene Anwendungsdomänen.Bittner, Eva A. C.; Oeste-Reiß, Sarah; Ebel, Philipp Alexander; Söllner, Matthias. In HMD Praxis der Wirtschaftsinformatik, pp. 1–16. 2019.
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Gestaltung smarter persönlicher Assistenten zwischen Rechtsverträglichkeit und Dienstleistungsqualität: Gestaltungsziele und Zielkonflikte.Knote, Robin; Thies, Laura Friederike; Söllner, Matthias; Roßnagel, Alexander; Leimeister, Jan Marco. In INFORMATIK 2019, Vol. Lecture Notes in Informatics (LNI) - Proceedings: Series of the Gesellschaft für Informatik (GI), K. David, K. Geihs, M. Lange, G. Stumme (eds.), pp. 435–448. Gesellschaft für Informatik (GI), Bonn, Germany, 2019.
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Smarte persönliche Assistenten von Amazon, Google und zahlreichen anderen Anbietern ermöglichen es, qualitativ hochwertige elektronische Dienstleistungen anzubieten. Gleichzeitig bringen diese Systeme auch viele Risiken mit sich. Berichte von diskriminierenden oder unverständlichem Systemverhalten häufen sich und verursachen Skepsis in der Gesellschaft. Diesen Problemen kann mit einer gleichermaßen rechtsverträglichen und qualitätsorientierten IT-Gestaltung entgegengewirkt werden. In diesem Beitrag werden Rechtsverträglichkeit und Dienstleistungsqualität als elementare Ziele für die Gestaltung smarter persönlicher Assistenten eingeführt. Zudem werden Zielkonflikte wie die Personalisierung von Leistungen bei gleichzeitiger Datensparsamkeit diskutiert und Implikationen für die Systemgestaltung erläutert.
Where is the Bot in our Team? Toward a Taxonomy of Design Option Combinations for Conversational Agents in Collaborative Work.Bittner, Eva A. C.; Oeste-Reiß, Sarah; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). 2019.
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With rapid progress in machine learning, language technologies and artificial intelligence, conversational agents (CAs) gain rising attention in research and prac-tice as potential non-human teammates, facilitators or experts in collaborative work. However, designers of CAs in collaboration still struggle with a lack of com-prehensive understanding of the vast variety of design options in the dynamic field. We address this gap with a taxonomy to help researchers and designers understand the design space and the interrelations of different design options and recognize useful design option com-binations for their CAs. We present the iterative deve-lopment of a taxonomy for the design of CAs grounded in state of the art literature and validated with domain experts. We identify recurring design option combina-tions and white spots from the classified objects that will inform further research and development efforts.
Die Forschungstätigkeit des Arztes im Spannungsfeld der Schweigepflicht.Geminn, Christian. In Recht der Datenverarbeitung (RDV), pp. 116–122. 2019.
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How to scale up contact-intensive services: ICT-enabled service innovation.Kleinschmidt, Stefan; Peters, Christoph; Leimeister, Jan Marco. In Journal of Service Management (JOSM), 31(4), pp. 793–814. 2019.
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Purpose While scaling is a viable approach to respond to growing demand, service providers in contactintensive services – such as education, healthcare, and social services – struggle to innovate their offerings. The reason is that the scaling of contact-intensive services – unlike purely digital settings – has resource limitations. To help ease the situation, the purpose of this article is to identify and describe the practices used in scaling contact-intensive services to support ICTenabled service innovation. Design/methodology/approach The research draws on an in-depth analysis of three contact-intensive services to examine service innovation practices. The analysis informs model development for service scaling. Findings The analysis uncovers three practices for service scaling – service interaction analysis, service pivoting, and service validation – and their related activities that are applied in a cyclic and iterative logic. Research limitations/implications While the findings reveal that the scalability of contact-intensive services is limited and determined by the formative characteristic of personal interaction, this study and its findings describe how to leverage scalability in contact-intensive services. Practical implications The insights into the practices enable service providers of contact-intensive services to iteratively revise their service offerings and the logic of creating value with the service. Originality/value This research identifies and describes for the first time the practices for the scaling of contactintensive services as an operationalisation of ICT-enabled service innovation.
Gewährleistung einer unabhängigen Datenschutzaufsicht in Japan – Die Schaffung der Personal Information Protection Commission.Geminn, Christian; Laubach, Anne. In Zeitschrift für Datenschutz, pp. 403–407. 2019.
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Daten für alle? – Zum Diskussionspapier der SPD.Geminn, C. In ZD-Aktuell, (4), p. 06492. 2019.
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Wirkung von interaktiven 3D-360°-Lernvideos in der praktischen Ausbildung von Handwerkern.Klingauf, A.; Funk, J.; Lüüs, A.; Schmidt, L. In DELFI 2019: 17. Fachtagung Bildungstechnologien (Berlin 2019), of Lecture Notes in Informatics (LNI) - Proceedings, N. Pinkwart, J. Konert (eds.), pp. 145–156. Gesellschaft für Informatik, Bonn, 2019.
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Die vorliegende Studie vergleicht den Einsatz von 3D-360°\hbox{-}}Lernvideos mit konventionellen Lernvideos bei der praktischen Ausbildung von Handwerkern. Es wurde die Hypothese geprüft, dass Motivation und Ablenkung durch die Technologie einen gegensätzlichen Einfluss auf den Lernerfolg haben und so die vorliegenden gemischten Befunde in diesem Feld erklären. Insgesamt 20 Auszubildende des ersten Lehrjahrs der Ausbildung zum Hoch- bzw. Tiefbaufacharbeiter lernten entweder mit konventionellen Lernvideos am Laptop oder mit 3D\hbox{-}}360°-Videos, die auf einem Smartphone\hbox{-}}basierten Head-Mounted Display angeschaut wurden. Der Lernerfolg wurde anhand einer praktischen Aufgabe gemessen, die von zwei unabhängigen Ratern bewertet wurde. Die durch die Lernmethode ausgelöste Motivation und Ablenkung der Lernenden wurde mithilfe von Fragebögen gemessen. Wie erwartet zeigte sich in der Gruppe der mit 3D\hbox{-}}360°\hbox{-}}Videos Lernenden sowohl eine höhere Motivation als auch eine höhere Ablenkung als in der Kontrollgruppe. Der Lernerfolg unterschied sich nicht zwischen den Gruppen. Die erwarteten Korrelationsmuster zur Unterstützung der weiteren Teilhypothesen konnten nicht gefunden werden.
Intrusion Detection-Systeme für vernetzte Fahrzeuge – Konzepte und Herausforderungen für Privatheit und Cyber-Sicherheit.Geminn, Christian; Waidner, Michael; Simo, Hervais. In Grundrechtsschutz im Smart Car – Kommunikation, Sicherheit und Datenschutz im vernetzten Fahrzeug, Vol. DuD-Fachbeiträge, A. Roßnagel, G. Hornung (eds.), pp. 311–333. Springer Vieweg, Wiesbaden, 2019.
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Entwicklung von Lernvideos, Lernzielen und Testfragen in kleinen und mittelständischen Unternehmen und ich Weiterbildungsinstituten.Imas, Constantin; Urbon, Ute; Kraft, Jürgen; Herbst, Ingo; Schöbel, Sofia; Glavas, Marija; Oeste-Reiß, Sarah. In Chancen und Herausforderungen des digitalen Lernens - Methoden und Werkzeuge für innovative Lehr-Lern-Konzepte, J. M. Leimeister, K. David (eds.), pp. 199–218. Springer, Berlin, 2019.
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Nutzeranforderungen an ein Assistenzsystem für den ÖPNV.Klingauf, A.; Hegenberg, J.; Lambrecht, F.; Bieland, D.; Schmidt, L.; Sommer, C. In Arbeit interdisziplinär analysieren - bewerten - gestalten: 65. Kongress der Gesellschaft für Arbeitswissenschaft (Dresden 2019), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.2.6). GfA-Press, Dortmund, 2019.
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Um die Attraktivität des öffentlichen Nahverkehrs zu erhöhen, wurde ein Mobilitätsassistenzsystem (MAS) konzipiert, das die Nutzer_innen in den Bereichen Anschlusssicherung und Belegungszustand sowie durch einen integrierten Lieferdienst unterstützt. Dazu wurde eine Anforderungserhebung mit Experten (n = 5) und Nutzer_innen (n = 426) durchgeführt, womit auch die Anforderungen von älteren Menschen und Menschen mit Einschränkungen besonders berücksichtigt werden sollten. Entgegen der Erwartungen ist das MAS für diese Gruppen nicht attraktiver als für andere Nutzer_innen. Die meisten Nutzer_innen wünschen sich die Interaktion mittels einer App, ältere Menschen und Menschen mit Einschränkungen bevorzugen andere Schnittstellen.
COOP - AutomatiC ValidatiOn of EvOlving Microservice ComPositions.Groh, Olga; Baraki, Harun; Jahl, Alexander; Geihs, Kurt. In Proceedings of the Seminar Series on Advanced Techniques & Tools for Software Evolution (SATTOSE 2019). 2019.
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Relevant Attributes in Formal Contexts.Hanika, Tom; Koyda, Maren; Stumme, Gerd. In ICCS, Vol. 11530 of Lecture Notes in Computer Science, D. Endres, M. Alam, D. Sotropa (eds.), pp. 102–116. Springer, 2019.
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Towards Corner Case Identification in Cyclists’ Trajectories.Heidecker, F.; Bieshaar, M.; Sick, B. In Proceedings of CSCS ’19: 3rd ACM Symposium on Computer Science in Cars (CSCS ’19). 2019.
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Erweiterte berufsbezogene Erreichbarkeit – Lösungsvorschläge zum Gesundheits- und Persönlichkeitsschutz. Maier, N. Springer Vieweg, Wiesbaden, 2019.
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Crowd Work als neue Form digitaler Erwerbsarbeit – Veränderungen der Arbeitsorganisation in Unternehmen.Durward, David; Leimeister, Jan Marco. In Neue Arbeit – neue Ungleichheiten – Folgen der Digitalisierung, B. Kohlrausch, C. Schildmann, D. Voss (eds.). Beltz Juventa, Weinheim, Germany, 2019.
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Interactive Collaborative Exploration using Incomplete Contexts.Felde, Maximilian; Stumme, Gerd. 2019.
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A common representation of information about relations of objects and attributes in knowledge domains are data-tables. The structure of such information can be analysed using Formal Concept Analysis (FCA). Attribute exploration is a knowledge acquisition method from FCA that reveals dependencies in a set of attributes with help of a domain expert. However, in general no single expert is capable (time- and knowledge-wise) of exploring knowledge domains alone. Therefore it is important to develop methods that allow multiple experts to explore domains together. To this end we build upon results on representation of incomplete knowledge [2, 8-10], adapt the corresponding version of attribute exploration to fit the setting of multiple experts and suggest formalizations for key components like expert knowledge, interaction and collaboration strategy. Furthermore we discuss ways of comparing collaboration strategies and suggest avenues for future research.
Privacy through Certification? The new Certification Scheme of the General Data Protection Regulation,.Hornung, Gerrit; Bauer, S. In Certification - Trust, Accountability, Liability, P. Rott (ed.). 2019.
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Der schleichende Personenbezug. Die Zwickmühle der Re-Identifizierbarkeit in Zeiten von Big Data und Ubiquitous Computing.Hornung, Gerrit; Wagner, B. In Computer und Recht, 9, G. Hornung (ed.), pp. 565–574. 2019.
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Freiraum oder Herrschaftsgebiet. Menschenrecht auf Zugang und völkerrechtliche Prinzipien als Schranken staatlichen Handelns im Internet. Goeble, Tilo. In Vol. 41 of Der Elektronische Rechtsverkehr. Nomos, Baden-Baden, 2019.
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工业4.0与法律：三大核心挑战 (Übersetzung des Beitrags „Industrie 4.0 und das Recht: Drei zentrale Herausforderungen“, Hornung, G. (Hrsg.), Rechtsfragen der Industrie 4.0. Datenhoheit – Verantwortlichkeit – rechtliche Grenzen der Vernetzung, Baden-Baden 2018).Hornung, Gerrit; Hofmann, K. In Law and Modernization, 5, pp. 161–184. 2019.
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Ausspioniert im Kinderzimmer? - Gefahren smarter Spielzeuge.Gilga, Carolin. In ZD-Aktuell, p. 06822. 2019.
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Die Zertifizierung nach der DSGVO - Innovatives, aber hochkomplexes Instrument, Datenschutz und Datensicherheit.Maier, Natalie; Bile, Tamer. In DuD, (8), pp. 478–482. 2019.
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Optimizing Applications for Mobile Cloud Computing Through MOCCAA.Baraki, Harun; Jahl, Alexander; Jakob, Stefan; Schwarzbach, Corvin; Fax, Malte; Geihs, Kurt. In Journal of Grid Computing, pp. 1–26. Springer, 2019.
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Kooperation oder Konfrontation? Erste Bußgelder nach DS-GVO.Braun, S. In ZD-Aktuell, (2), p. 06445. 2019.
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Die Zertifizierung von Cloud-Diensten nach der DSGVO.Maier, Natalie; Lins, S.; Teigeler, H.; Roßnagel, Alexander; Sunyaev, A. In Datenschutz und Datensicherheit (DuD), pp. 225–229. 2019.
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Towards an Integrative Understanding of Privacy Nudging – Systematic Review and Research Agenda.Barev, Torben Jan; Janson, Andreas. In Annual Pre-ICIS Workshop on HCI Research in MIS (Pre-ICIS). 2019.
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When using digital technologies, various data traces are left behind for collection, storage and analysis. Innovative solutions for information systems are needed that mitigate privacy risks and foster information privacy. One mechanism to achieve this are privacy nudges. Nudges are a concept from behavioural economics to influence individual’s decisions. This paper focusses on building an integrative understanding of privacy nudging. Specifically, we conceptualize the constituting characteristics of privacy nudges by conducting a systematic literature review to cover the current state of knowledge in the interdisciplinary privacy nudge literature stream. We structure the intrapersonal factors that determine effectiveness for each privacy nudge in a morphological box and conceptualize on this basis current research coverage as well as demand for future research. Finally, we develop theoretical propositions contributing to the discussion of how to study and design effective privacy nudges that can pave the way for more privacy sensitive IT systems.
CHARIOT - Towards a Continuous High-Level Adaptive Runtime Integration Testbed.Barnes, C. M.; Bellman, K.; Botev, J.; Diaconescu, A.; Esterle, L.; Gruhl, C.; Landauer, C.; Lewis, P. R.; Nelson, P. R.; Stein, A.; Stewart, C.; Tomforde, S. In 2019 IEEE 4th International Workshops on Foundations and Applications of Self* Systems (FAS*W), pp. 52–55. IEEE, 2019.
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Transformationen des Konsums. Vom industriellen Massenkonsum zum individualisierten Digitalkonsum. Baule, Bernward; Hohnsträter, Dirk; Krankenhagen, Stefan; Lamla, Jörn. In . Nomos, Baden-Baden, 2019.
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Wohin entwickelt sich die Konsumgesellschaft? Wie ändern sich die Einstellungen und Verhaltensweisen der Verbraucherinnen und Verbraucher? Zeichnet sich ein Wandel vom industriellen Massenkonsum zum individualisierten Digitalkonsum ab? Diesen Fragen widmete sich die dritte Jahrestagung des bundesweiten Netzwerks Verbraucherforschung, deren Ergebnisse der vorliegende Band dokumentiert.Tiefgreifende Transformationen in der Geschichte des Konsums, wie sie die Industrielle Revolution und die Digitalisierung darstellen, können nur durch disziplinübergreifende Forschungsanstrengungen verstanden werden. Neben den klassischen Fächern der Verbraucherwissenschaften wie Wirtschafts-, Rechts-, Politik- und Sozialwissenschaften kommen daher in diesem Band auch historiografische und kulturwissenschaftliche Perspektiven zum Tragen. Die Veröffentlichung hat zum Ziel, den Austausch aktueller Ergebnisse der verbraucherbezogenen Forschung in Wissenschaft und Politik zu fördern und den Wissenstransfer zu stärken.
AI-Based Digital Assistants - Opportunities, Threats, and Research Perspectives.Maedche, Alexander; Legner, Christine; Benlian, Alexander; Berger, Benedikt; Gimpel, Henner; Hess, Thomas; Hinz, Oliver; Morana, Stefan; Söllner, Matthias. In Business & Information Systems Engineering, 61(4), pp. 535–544. 2019.
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This article summarizes the panel discussion at the International Conference on Wirtschafts-informatik in March 2019 in Siegen (WI 2019) and presents different perspectives on AI-based digital assistants. It sheds light on (1) application areas, opportunities, and threats as well as (2) the BISE community’s roles in the field of AI-based digital assistants. The different authors’ contributions emphasize that BISE, as a socio-technical discipline, must address the designs and the behaviors of AI-based digital assistants as well as their interconnections. They have identified multiple research opportunities to deliver descriptive and prescriptive knowledge, thereby actively shaping future interactions between users and AI-based digital assistants. We trust that these inputs will lead BISE researchers to take active roles and to contribute an IS perspective to the academic and the political discourse about AI-based digital assistants.
Formal Context Generation Using Dirichlet Distributions.Felde, Maximilian; Hanika, Tom. In ICCS, Vol. 11530 of Lecture Notes in Computer Science, D. Endres, M. Alam, D. Sotropa (eds.), pp. 57–71. Springer, 2019.
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Forschungsprojekt „European Cloud Service Data Protection Certification (AUDITOR).Maier, Natalie. In ZD-Aktuell, p. 06876. 2019.
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Start Intention Detection of Cyclists using an LSTM Network.Kress, Viktor; Jung, Janis; Zernetsch, Stefan; Doll, Konrad; Sick, Bernhard. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik -- Informatik für Gesellschaft (Workshop-Beiträge), Vol. P-295, C. Draude, M. Lange, B. Sick (eds.), pp. 219–228. Gesellschaft für Informatik e.V., Bonn, 2019.
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Pose Based Start Intention Detection of Cyclists.Kress, V.; Jung, J.; Zernetsch, S.; Doll, K.; Sick, B. In 2019 IEEE Intelligent Transportation Systems Conference (ITSC), pp. 2381–2386. 2019.
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Über die Entwicklung und Bedeutung von Berufsbildern im Lernkontext - Ergebnisse einer Marktstudie des Energieberatungsmarktes.Glavas, Marija; Schöbel, Sofia; Oeste-Reiß, Sarah. In Chancen und Herausforderungen des digitalen Lernens - Methoden und Werkzeuge für innovative Lehr-Lern-Konzepte, J. M. Leimeister, K. David (eds.), pp. 11–31. Springer, Berlin, 2019.
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Pose Based Trajectory Forecast of Vulnerable Road Users.Kress, V.; Zernetsch, S.; Doll, K.; Sick, B. In IEEE Symposium Series on Computational Intelligence (SSCI), pp. 1200–1207. Xiamen, 2019.
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Internes Crowdsourcing – Herausforderungen und Lösungsstrategien für eine erfolgreiche Transformation der Arbeitsorganisation.Knop, Nicolas; Blohm, Ivo; Leimeister, Jan Marco. In HMD Praxis der Wirtschaftsinformatik, 56(4), pp. 735–747. Springer Fachmedien, Wiesbaden, Germany, 2019.
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Dieser Artikel hilft Organisationen ihre Mitarbeiter mittels Crowdsourcing in einem digitalen Umfeld zu reorganisieren, um Agilität, Produktivität und Effektivität der Geschäftsprozesse zu erhöhen. Internes Crowdsourcing, in welchem die kollektive Arbeitskraft, Kreativität und Intelligenz der Mitarbeiter effektiver genutzt wird, stellt eine flexible, dezentrale sowie digitale Form der Arbeitsorganisation dar. Dieser Prozess resultiert in einer Transformation der Organisation, der über die einfache Einrichtung der Crowdsourcing-Plattform hinausgeht. Aus diesem Grund stehen viele Unternehmen vor Problemen, diesen Transformationsprozess erfolgreich zu gestalten und können die Vorteile von Crowdsourcing nicht oder nur eingeschränkt nutzen. Daher identifizieren wir in unserem Artikel, basierend anhand einer multiplen Fallstudie fünf Herausforderungen und dazu passende Maßnahmen, um eine erfolgreiche Transformation zu managen. In diesem Rahmen gehen wir in einem Fall auf die Herausforderungen und Lösungen im Detail ein, auf denen wir dann in den zusätzlichen Fällen aufbauen. Schließlich präsentieren wir fünf Herausforderungen, wie inadäquate IT Fähigkeiten und die passenden Lösungsansätze, wie gezielte Schulungen. Diese erlauben es Unternehmen Internes Crowdsourcing als eine innovative Form der Arbeitsorganisation zu nutzen und Agilität sowie Effektivität interner Arbeitsprozesse zu erhöhen.
Ladders for Learning: Is Scaffolding the Key to Teaching Problem Solving in Technology-mediated Learning Contexts?Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Academy of Management Learning & Education (AMLE). Academy of Management, 2019.
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The success of innovative teaching/learning approaches aiming to foster problem solving in management education depends on useful and easy-to-use IT components in the learning process. However, the complexity of problem solving in self-regulated learning approaches may overwhelm the learner and can lead to unsatisfying learning outcomes. Research suggests the implementation of technology-enhanced scaffolds as a mechanism to guide the learners in their individual problem-solving process to enhance their learning outcomes. We present a theoretical model based on adaptive structuration theory and cognitive load theory that explains how technologyenhanced scaffolding contributes to learning outcomes. We test the model with a fully randomized between-subject experiment in a flipped classroom for management education focusing on individual problem solving. Our results show that technology-enhanced scaffolding contributes significantly to the management of cognitive load as well as to learning process satisfaction and problemsolving learning outcomes. Thereby, our paper provides new conceptual and empirically tested insights for a better understanding of technology-enhanced scaffolds and their design to assist problem solving and its respective effects in flipped classrooms for management education.
Drawing Order Diagrams Through Two-Dimension Extension.Dürrschnabel, Dominik; Hanika, Tom; Stumme, Gerd. 2019.
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Order diagrams are an important tool to visualize the complex structure of ordered sets. Favorable drawings of order diagrams, i.e., easily readable for humans, are hard to come by, even for small ordered sets. Many attempts were made to transfer classical graph drawing approaches to order diagrams. Although these methods produce satisfying results for some ordered sets, they unfortunately perform poorly in general. In this work we present the novel algorithm DimDraw to draw order diagrams. This algorithm is based on a relation between the dimension of an ordered set and the bipartiteness of a corresponding graph.
DimDraw - A Novel Tool for Drawing Concept Lattices.Dürrschnabel, Dominik; Hanika, Tom; Stumme, Gerd. In ICFCA (Supplements), Vol. 2378 of CEUR Workshop Proceedings, D. Cristea, F. L. Ber, R. Missaoui, L. Kwuida, B. Sertkaya (eds.), pp. 60–64. CEUR-WS.org, 2019.
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Referenzprozesse zur Aufarbeitung von implizitem Wissen zu Tätigkeitsfeldern und Arbeitsprozessen - Ergebnisse einer Workshopserie.Glavas, Marija; Schöbel, Sofia; Oeste-Reiß, Sarah. In Chancen und Herausforderungen des digitalen Lernens - Methoden und Werkzeuge für innovative Lehr-Lern-Konzepte, J. M. Leimeister, K. David (eds.), pp. 75–94. Springer, Berlin, 2019.
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FCA2VEC: Embedding Techniques for Formal Concept Analysis.Dürrschnabel, Dominik; Hanika, Tom; Stubbemann, Maximilian. 2019.
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Embedding large and high dimensional data into low dimensional vector spaces is a necessary task to computationally cope with contemporary data sets. Superseding latent semantic analysis recent approaches like word2vec or node2vec are well established tools in this realm. In the present paper we add to this line of research by introducing fca2vec, a family of embedding techniques for formal concept analysis (FCA). Our investigation contributes to two distinct lines of research. First, we enable the application of FCA notions to large data sets. In particular, we demonstrate how the cover relation of a concept lattice can be retrieved from a computational feasible embedding. Secondly, we show an enhancement for the classical node2vec approach in low dimension. For both directions the overall constraint of FCA of explainable results is preserved. We evaluate our novel procedures by computing fca2vec on different data sets like, wiki44 (a dense part of the Wikidata knowledge graph), the Mushroom data set and a publication network derived from the FCA community.
Internal Crowd Work as a Source of Empowerment - An Empirical Analysis of the Perception of Employees in a Crowdtesting Project.Durward, David; Simmert, Benedikt; Blohm, Ivo; Peters, Christoph. In International Conference on Wirtschaftsinformatik (WI). Siegen, Germany, 2019.
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Internal crowd work has emerged as a new form of digital gainful employment that changes the nature of work. However, the possible effects of internal crowd work on the individual level have been largely neglected. In this paper, we therefore present our research in progress which is concerned with the effects of work characteristics in internal crowd work that have impact on the individual’s empowerment and satisfaction. Thus, we developed our research model and conducted an online survey amongst 118 internal crowd workers of a Swiss bank who were asked to test new software. Our expected contribution will increase the understanding of internal crowd work and provide important insights for organizations to (re-) design work on internal IT-platforms.
Doing thinking: revisiting computing with artistic research and technofeminism.Britton, Loren; Klumbyte, Goda; Draude, Claude. In Digital Creativity, 30(4), pp. 1–16. 2019.
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Das Spannungsverhältnis zwischen Datenschutz und Informationszugang im Strafverfahren: Grundlagen, einfachgesetzliche Abwägungen und europarechtliche Überformung.Hornung, Gerrit. In Justizielle Medienarbeit im Strafverfahren. Entwurf des Arbeitskreises Strafprozessrecht und Polizeirecht (ASP) für eine die Pressefreiheit und das Persönlichkeitsrecht schützende Auskunftserteilung im Strafverfahren, M. A. Zöller, R. Esser (eds.), pp. 135–172. 2019.
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Gestaltung hybrider Entscheidungsarchitekturen zur Förderung kritischer Verbraucherkompetenzen.Kropf, Jonathan; Lamla, Jörn; Leimeister, Jan Marco; Oeste-Reiß, Sarah; Weber, Thorsten. In Internationale Tagung Wirtschaftsinformatik (WI), Vol. 14. Siegen, Germany, 2019.
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Internetanwendungen, Soziale Medien, wirkmächtige KI-Algorithmen und Active‐Learning‐Technologien bilden heute bereits hybride Entscheidungsarchitekturen. Gemeint sind damit die oft unbemerkten Rahmungen innerhalb derer (Verbraucher-)Entscheidungen getroffen werden und die sich auf hybride Verbindungen von künstlicher und menschlicher Intelligenz verteilen. Die Gestalter solcher Architekturen werden dabei mit einer großen Machtfülle ausgestattet, deren Konsequenzen gegenwärtig nur schwer absehbar sind. Daraus ergibt sich für die Forschung die Frage, wie hybride Entscheidungsarchitekturen gesellschaftlich-wünschenswert gestaltet sein sollten, damit sie die kritischen Kompetenzen der Verbraucher erhalten und fördern, anstatt sie unbemerkt zu untergraben. Wir schlagen dafür ein hybrides Entscheidungsunterstützungssystem vor, das durch Erkenntnisse aus den Literaturbereichen der Rechtfertigungsordnungen, Mapping of Controversies sowie auf pädagogischen Aspekten zur Kompetenzförderung aufbaut. Methodisch folgen wir einem gestaltungsorientierten Vorgehen, dem sog. Design Science Approach.
Die parlamentarische Kontrolle digitaler Räume.Hornung, Gerrit. In Bitburger Gespräche. Jahrbuch 2018, S. G. für Rechtspolitik, I. für R. der U. Trier (eds.), pp. 95–112. C.H.Beck, Munich, Germany, 2019.
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Towards Smart Assistance Systems for Physical and Manual Tasks.Knote, Robin. In European Conference on Information Systems (ECIS). Stockholm, Sweden, 2019.
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Although automation of physical work is continuously accelerated by advances in information technol-ogy, many complex tasks, such as in manufacturing, assembly or maintenance still require human work. In this context, Smart Physical and Manual Task Assistance Systems (SPMTAs) support workers by adapting to their current situation or task. Since the importance of physical work is still evident in a digitized economy, there is a need for properly designed SPMTAs in order to increase job satisfaction and performance of workers by taking off physical and cognitive strain. However, scientific literature on how to design SPMTAs is sparse. Combining sociotechnical systems and work design theory, we derived propositions and conducted interviews with workers of a German car component manufacturer as part of a design science project. The company uses three SPMTAs for assembly, final inspection, and tool management. As a result, we elicited 18 design requirements for SPMTAs to increase job satisfac-tion and performance. In this research-in-progress paper, we present our preliminary results and dis-cuss next steps.
Towards Solving the Personalization-Privacy Paradox for Smart Personal Assistants.Knote, Robin. In Hawaii International Conference on System Sciences (HICSS). 2019.
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How to Empower the Workforce – Analyzing Internal Crowd Work as a Neo-Socio-Technical System.Durward, David; Simmert, Benedikt; Peters, Christoph; Blohm, Ivo; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). 2019.
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Evaluierung der sozialen Akzeptanz verschiedener Interaktionsarten für Augmented-Reality-Datenbrillen.Mack, N.; Schmidt, L. In Mensch und Computer 2019 - Workshopband (Hamburg 2019), F. Steinicke, K. Wolf (eds.), pp. 150–157. Gesellschaft für Informatik e. V, Bonn, 2019.
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Die soziale Akzeptanz ist neben der praktischen Akzeptanz ein wichtiger Bestandteil der Akzeptanz eines Systems durch die Nutzer. Es ist möglich, dass trotz hoher praktischer Akzeptanz ein System nicht genutzt wird, da dieses sozial nicht akzeptabel ist. Für Augmented-Reality-Datenbrillen (AR-Datenbrillen) wurden schon verschiedene Faktoren determiniert, welche die soziale Akzeptanz beeinflussen können, um zu vermeiden, dass diese von den Nutzern abgelehnt werden. Ein wichtiger Faktor, welcher die soziale Akzeptanz einer Datenbrille beeinflussen kann, ist die Interaktionsart. Es ist anzunehmen, dass die Verwendung unterschiedlicher Interaktionsarten in dem gleichen sozialen Kontext mit dem gleichen Gesamtsystem nicht in der gleichen sozialen Akzeptanz resultiert. Nachfolgend wird eine Studie mit 10 Probanden und 6 aktuell auf AR-Datenbrillen verwendeten Interaktionsarten durchgeführt, um deren soziale Akzeptanz in verschiedenen Orts- und Zuschauerkontexten vergleichend zu evaluieren. Die Studie zeigt, dass die Interaktionsarten, insbesondere diverse Arten der Sprachinteraktion, mit steigender Distanz der sozialen Beziehung zu dem Zuschauer in der Bewertung degradieren und, dass der Ort des voraussichtlichen Einsatzes der Interaktionsart berücksichtigt werden muss.
Drohender Gnadenstoß für das Privacy Shield?Gilga, Carolin. In ZD-Aktuell, p. 06696. 2019.
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Intentions of Vulnerable Road Users -- Detection and Forecasting by Means of Machine Learning.Goldhammer, M.; Köhler, S.; Zernetsch, S.; Doll, K.; Sick, B.; Dietmayer, K. In IEEE Transactions on Intelligent Transportation Systems, pp. 1–11. 2019.
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The Emergency Responsive Digital City, Proceedings of the World Congress on Resilience, Reliability and Asset Management.Hornung, Gerrit; Hollick, M. In Proceedings of the World Congress on Resilience, Reliability and Asset Management, pp. 136–139. 2019.
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Limitations of Assessing Active Learning Performance at Runtime.Kottke, Daniel; Schellinger, Jim; Huseljic, Denis; Sick, Bernhard. In CoRR, abs/1901.10338. 2019.
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Positioning of Active Wheels for Optimal Ball Handling.Beuermann, Maximilian; Ossenkopf, Marie; Geihs, Kurt. In Robot World Cup, pp. 30–43. Springer, 2019.
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Conexp-Clj - A Research Tool for FCA.Hanika, Tom; Hirth, Johannes. In ICFCA (Supplements), Vol. 2378 of CEUR Workshop Proceedings, D. Cristea, F. L. Ber, R. Missaoui, L. Kwuida, B. Sertkaya (eds.), pp. 70–75. CEUR-WS.org, 2019.
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Improving Processes and Outcomes in Digital Learning Environments - Empirical Foundations and Design Principles for Scaffolding in Technology-mediated Learning. Janson, Andreas. Vol. Research on IT / Service / Innovation / Collaboration. kassel university press, Kassel, Germany, 2019.
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Ich denke, es ist wichtig zu verstehen, warum die Netzwerkanalyse jetzt populär und besonders interessant für die Forschung geworden ist.Hanika, Tom; Kibanov, Mark; Kropf, Jonathan; Laser, Stefan. In Digitale Bewertungspraktiken, J. Kropf, S. Laser (eds.), pp. 165–188. Springer, 2019.
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Using grid supporting flexibility in electricity distribution networks.König, Immanuel; Heilmann, Erik; Henze, Janosch; David, Klaus; Wetzel, Heike; Sick, Bernhard. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft, Vol. P-294 of LNI, K. David, K. Geihs, M. Lange, G. Stumme (eds.), pp. 531–544. Gesellschaft für Informatik e.V., Kassel, Germany, 2019.
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Experimentalismus in der Soziologie. Forschungsprogramm und Brückenschläge.Bogusz, Tanja; Lamla, Jörn. In Komplexe Dynamiken globaler und lokaler Entwicklungen. Verhandlungen des 39. Kongresses der Deutschen Gesellschaft für Soziologie in Göttingen 2018, N. Burzan (ed.). 2019.
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Kennzeichnung von Social Bots – Transparenzpflichten zum Schutz integrer Kommunikation.Löber, Lena I. In Multimedia und Recht, (8), A. Roßnagel (ed.), pp. 493–498. 2019.
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Classifying Smart Personal Assistants: An Empirical Cluster Analysis.Knote, Robin; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). 2019.
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Cyber-physische Systeme zwischen rechtlichen Anforderungen und rechtskonformer Gestaltung.Hornung, Gerrit; Lurtz, H. In Handbuch Industrie 4.0 und Digitale Transformation. Betriebswirtschaftliche, technische und rechtliche Herausforderungen, R. Obermaier (ed.), pp. 113–136. Springer, 2019.
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Discovering Implicational Knowledge in Wikidata.Hanika, Tom; Marx, Maximilian; Stumme, Gerd. 2019.
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Knowledge graphs have recently become the state-of-the-art tool for representing the diverse and complex knowledge of the world. Examples include the proprietary knowledge graphs of companies such as Google, Facebook, IBM, or Microsoft, but also freely available ones such as YAGO, DBpedia, and Wikidata. A distinguishing feature of Wikidata is that the knowledge is collaboratively edited and curated. While this greatly enhances the scope of Wikidata, it also makes it impossible for a single individual to grasp complex connections between properties or understand the global impact of edits in the graph. We apply Formal Concept Analysis to efficiently identify comprehensible implications that are implicitly present in the data. Although the complex structure of data modelling in Wikidata is not amenable to a direct approach, we overcome this limitation by extracting contextual representations of parts of Wikidata in a systematic fashion. We demonstrate the practical feasibility of our approach through several experiments and show that the results may lead to the discovery of interesting implicational knowledge. Besides providing a method for obtaining large real-world data sets for FCA, we sketch potential applications in offering semantic assistance for editing and curating Wikidata.
Nutzergenerierte Dienstleistungssysteme zur digitalen Transformation von Organisationen.Agarwal, Nivedita; Bästlein, Moritz; Böhmann, Tilo; Ernst, Sissy-Josefina; Fritzsche, Albrecht; Grotherr, Christian; Hoffmann, Holger; Klemm, Pablo; Leimeister, Jan Marco; Li, Mahei M.; Möslein, Kathrin M.; Peters, Christoph; Sarpong, Benjamin; Saxe, Sebastian; Schmidt, Thorsten; Schymanietz, Martin; Wurfbaum, Moritz S.; Semmann, Martin; Ziegler, Dirk. In Digivation. Springer, 2019.
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Selbstbestimmungspraktiken in der Datenökonomie: Gesellschaftlicher Widerspruch oder ‚privates‘ Paradox?Lamla, Jörn; Ochs, Carsten. In Paradoxien des Verbraucherverhaltens. Dokumentation der Jahreskonferenz 2017 des Netzwerks Verbraucherforschung, B. Blättel-Mink, P. Kenning (eds.), pp. 25–39. Springer Gabler, Wiesbaden, 2019.
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EDSA: Leitlinien 2/2019 zur Vertragsdatenverarbeitung.Johannes, P. In ZD-Aktuell, p. 06821. 2019.
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Grundrechtsschutz im Smart Car – Kommunikation, Sicherheit und Datenschutz im vernetzten Fahrzeug. Hornung, Gerrit; Roßnagel, Alexander. Springer Vieweg, Wiesbaden, 2019.
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Theoriegeleitete und nutzerzentrierte Entwicklung von digitalen Lernangeboten und Dienstleistungen.Janson, Andreas; Thiel de Gafenco, Marian; Klusmeyer, Jens; Leimeister, Jan Marco. In Berufsbildung International, Vol. Digitalisierung. DLR Projektträger, 2019.
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“Everything will be screen.” Readdressing Screenness through Art-based Experiments.Draude, Claude. In Dialogues Between Artistic Research and Science and Technology Studies, H. Borgdorff, P. Peters, T. Pinch (eds.), pp. 139–154. London/New York: Routledge, 2019.
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Non-discrimination by design?!Draude, Claude. In Many Worlds. Many Nets. Many Visions. Critical Voices, Visions and Vectors for Internet Governance., K. Mosene, M. C. Kettemann (eds.), p. 34. Alexander von Humboldt Institute for Internet and Society (HIIG) and Leibniz Institute for Media Research / Hans-Bredow Institut (HBI), 2019.
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KI-basierte Sprachassistenten im Alltag: Forschungsbedarf aus informatischer, psychologischer, ethischer und rechtlicher Sicht.Krämer, Nicole C.; Artelt, André; Geminn, Christian; Hammer, Barbara; Kopp, Stefan; Manzeschke, Arne; Roßnagel, Alexander; Slawik, Pauline; Szczuka, Jessica M.; Varonina, Lina; Weber, Carina. 2019.
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Projekt IMPACT: ein von der VW-Stiftung gefördertes Forschungsprojekt mit dem Ziel, die Chancen und Risiken künstlicher Intelligenz innerhalb einer Lebensspanne zu untersuchen; vom Kind zum Senior.
Self-Improving System Integration -- On a Definition and Characteristics of the Challenge.Bellman, K. L.; Gruhl, C.; Landauer, C.; Tomforde, S. In 2019 IEEE 4th International Workshops on Foundations and Applications of Self* Systems (FAS*W), pp. 1–3. 2019.
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The self-improving system integration (SISSY) initiative-sometimes also called self-integration-started over six years ago. Recently, we have seen contributions approaching parts of the scope from different directions. In order to provide a better understanding how these attempts support the development of novel SISSY technology, this paper presents a definition of the term. In addition, it discusses the fundamental challenges stemming from the increasingly interconnected character of large-scale distributed and adaptive systems typically referred to as "Interwoven Systems", with these systems describing the basic motivation for SISSY research.
Digitale Bewertungspraktiken. Für eine Bewertungssoziologie des Digitalen. Kropf, J; Laser, S. Springer VS, Wiesbaden, 2019.
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Das Netzwerkdurchsetzungsgesetz in der Umsetzung. Bilanz nach den ersten Transparenzberichten.Löber, L. I.; Roßnagel, A. In MMR 2019, (2), pp. 71–76. 2019.
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Wir mögen uns nicht und arbeiten trotzdem zusammen - wie Aufgabeninterdependenzen den Zusammenhang zwischen interpersonellen Teamprozessen und Zufriedenheit beeinflussen.Friedrichs, Juliane; Ohly, Sandra. In Gruppe. Interaktion. Organisation. Zeitschrift für Angewandte Organisationspsychologie (GIO), 50(1), pp. 15–24. 2019.
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This article in the journal Gruppe. Interaktion. Organisation focusses on the relationship between interpersonal team processes and team satisfaction. Interpersonal team processes include conflict- and affectmanagement as well as motivational team processes. In this context, the role of task interdependence is examined. Student teams (n = 25) were interviewed to examine if the degree of task interdependence positively influences the relationship of interpersonal processes and team satisfaction. The results show on the one hand, that interpersonal team processes are positively related to perceived satisfaction at the team level and, on the other hand, that task interdependence is a moderator variable. Contrary to the assumption that task interdependencies reinforce the relationship between interpersonal processes and team satisfaction, it was shown that there is a compensatory effect in the low interdependence condition. Teams with lower task interdependence and good conflict-, affect- and motivation management are almost as satisfied with their team as teams with higher task interdependence and good conflict-, affect- and motivation management. Implications are discussed.
The Organic Computing Doctoral Dissertation Colloquium: Status and Overview in 2019.Krupitzer, Christian; Tomforde, Sven. In INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik -- Informatik für Gesellschaft (Workshop-Beiträge), Vol. P-295, C. Draude, M. Lange, B. Sick (eds.), pp. 545–554. Gesellschaft für Informatik e.V., Bonn, 2019.
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Tree Species Classification Based on Hybrid Ensembles of a Convolutional Neural Network (CNN) and Random Forest Classifiers.Knauer, Uwe; Styp von Rekowski, Cornelius; Stecklina, Marianne; Krokotsch, Tilman; Pham Minh, Tuan; Hauffe, Viola; Kilias, David; Ehrhardt, Ina; Sagischewski, Herbert; Chmara, Sergej; Seiffert, Udo. In Remote Sensing, 11(23). 2019.
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In this paper, we evaluate different popular voting strategies for fusion of classifier results. A convolutional neural network (CNN) and different variants of random forest (RF) classifiers were trained to discriminate between 15 tree species based on airborne hyperspectral imaging data. The spectral data was preprocessed with a multi-class linear discriminant analysis (MCLDA) as a means to reduce dimensionality and to obtain spatial–spectral features. The best individual classifier was a CNN with a classification accuracy of 0.73 +/− 0.086. The classification performance increased to an accuracy of 0.78 +/− 0.053 by using precision weighted voting for a hybrid ensemble of the CNN and two RF classifiers. This voting strategy clearly outperformed majority voting (0.74), accuracy weighted voting (0.75), and presidential voting (0.75).
Towards a Taxonomy of Text Mining Features.Fromm, Hansjörg; Wambsganss, Thiemo; Söllner, Matthias. In European Conference on Information Systems (ECIS) 2019, J. vom Brocke, S. Gregor, O. Müller (eds.), p. 12. European Conference on Information Systems (ECIS), 2019.
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Recently, text mining has received special attention from both researchers and practitioners, since it enables the development of intelligent and automated services. Text mining has been influenced by different disciplines like computer science, statistics, computational linguistics and library and infor-mation sciences. However, text mining features that evolved in one particular discipline are often un-known or rarely used in the other disciplines. No scientific feature framework exits which facilitates costly feature engineering and evaluation. Therefore, we aim to develop a novel text mining feature taxonomy, which helps researchers and practitioners to develop, refine, compare and evaluate their text mining studies. In this research in progress paper, we focus on laying the foundation for our tax-onomy development by presenting our first two research cycles. Here, we were aiming for diversity, not completeness. We derived five dimensions and classified different text features accordingly to pro-vide a deeper understanding.
INFORMATIK 2019: 50 Jahre Gesellschaft für Informatik – Informatik für Gesellschaft (Workshop-Beiträge). Draude, Claude; Lange, Martin; Sick, Bernhard. In of LNI P-295. Gesellschaft für Informatik e.V., Bonn, 2019.
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Collaborative Interactive Learning - A clarification of terms and a differentiation from other research fields.Hanika, Tom; Herde, Marek; Kuhn, Jochen; Leimeister, Jan Marco; Lukowicz, Paul; Oeste-Reiß, Sarah; Schmidt, Albrecht; Sick, Bernhard; Stumme, Gerd; Tomforde, Sven; Zweig, Katharina Anna. In CoRR, abs/1905.07264. 2019.
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Fujiwara, S./Geminn, C./Roßnagel, A. Title: Angemessenes Datenschutzniveau in Japan – Der Angemessenheitsbeschluss der Kommission und seine Folgen.Fujiwara, S.; Geminn, C.; Roßnagel, A. In ZD, (4). 2019.
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GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beiträge. Draude, Claude; Lange, Martin; Sick, Bernhard. Vol. 295. Gesellschaft für Informatik (GI), 2019.
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Discovering Knowledge in Bipartite Graphs with Formal Concept Analysis.. Technical Report (PhD dissertation), . Hanika, Tom. PhD dissertation. University of Kassel, Germany, 2019.
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Umsetzung einer 3D-360°-Lerneinheit in der praktischen Ausbildung von Handwerkern: Einsatzmöglichkeiten von interaktiven immersiven Medien.Funk, J.; Klingauf, A.; Lüüs, A.; Schmidt, L. In Proceedings of DELFI Workshops (Berlin 2019), S. Schulz (ed.), pp. 161–172. Gesellschaft für Informatik e. V, Bonn, 2019.
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Im Folgenden wird die Umsetzung einer Lerneinheit in der praktischen Ausbildung von Handwerker*innen mithilfe von interaktiven 3D-360°-Videos vorgestellt. Vorhandene Inhalte aus dem Projekt FAINLAB wurden dabei als interaktive immersive Anwendung für das Erlernen der Herstellung eines Fliesenspiegels umgesetzt. Die Anwendung kann mithilfe eines Smartphone-basierten Head-Mounted Displays (HMD) genutzt werden und ermöglicht durch niedrige Kosten eine breite Verwendung in der Ausbildung. Die Interaktion wird mittels mehrerer Schaltflächen ermöglicht, die per Blicksteuerung zu nutzen sind, wie eine formative Evaluation mit Studierenden absicherte. Es wird auf eine vergleichende Evaluation verwiesen, die zeigt, dass die Anwendung gegenüber dem ursprünglichen FAINLAB-Video bei gleichem Lernerfolg eine höhere Motivation der Lernenden bewirkt.
Situated algorithms: a sociotechnical systemic approach to bias.Draude, Claude; Klumbyte, Goda; Lücking, Phillip; Treusch, Pat. In OIR (Online Information Review), ahead-of-print(ahead-of-print), pp. 16–34. 2019.
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Projektabschluss MyCPS.Lurtz, Helmut. In ZD-Aktuell, p. 06594. 2019.
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2018[ to top ]

欧州の一般データ保護規制の枠組みにおける新しい連邦データ保護法。(dt.: „Das neue Bundesdatenschutzgesetz im Rahmen der Datenschutzgrundverordnung“).Laubach, A. In ZD-Aktuell, (12). 2018.
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Fallstudie zur Roboterunterstützung des Menschen bei manueller Montage.Hegenberg, J.; Schimpf, D. W.; Fischer, N.; Schmidt, L. In Zeitschrift für Arbeitswissenschaft, 72(4), pp. 239–251. 2018.
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Anhand eines Montagearbeitsplatzes der Automobilindustrie wird die Integration eines unterstützenden Roboters betrachtet. Für die praxisnahe Evaluation der Roboterunterstützung wurde im Labor ein Mock-up des Arbeitsplatzes realisiert. Die damit durchgeführte Studie (n = 21) fokussierte sich auf die Steigerung der Effizienz des Arbeitsprozesses durch die technische Unterstützung und die Verringerung der Beanspruchung für den Werker durch Übernahme eines Teils der Materialhandhabung durch den Roboter. Die Effizienzsteigerung und Beanspruchungsreduktion ließen sich statistisch signifikant belegen. Vor dem Hintergrund der Akzeptanz einer solchen Roboterunterstützung wurde auch die Gebrauchstauglichkeit betrachtet und positiv bewertet. Praktische Relevanz. Einerseits finden wissenschaftliche Studien zur Mensch-Roboter-Kollaboration häufig in vereinfachten oder künstlichen Setups bspw. der Handhabung von Bauklötzen oder in VR-Umgebungen statt, andererseits werden vor allem in Großunternehmen Versuchsstände realisiert, die öffentlichkeitswirksam präsentiert werden können, aber häufig eine gewissen Praxisferne aufweisen. Der Aufbau und die Nutzung eines Mock-ups, der sich möglichst nah am realen Montagearbeitsplatz orientiert und ausschließlich kommerziell verfügbare Standardkomponenten nutzt, zur Durchführung wissenschaftlicher Studien anhand tatsächlicher und in der Industrie häufig vorzufindender Arbeitsprozesse stellt hier die hohe praktische Relevanz und die Übertragbarkeit der Ergebnisse sicher.
Novelty detection with CANDIES: a holistic technique based on probabilistic models.Gruhl, Christian; Sick, Bernhard. In Int. J. Machine Learning & Cybernetics, 9(6), pp. 927–945. 2018.
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Aspects of Measuring and Evaluating the Integration Status of a (Sub-)System at Runtime.Gruhl, Christian; Tomforde, Sven; Sick, Bernhard. In 2018 IEEE 3rd International Workshops on Foundations and Applications of Self* Systems (FAS*W), Trento, Italy, September 3-7, 2018, pp. 198–203. 2018.
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Towards Cooperative Self-adapting Activity Recognition.Jahn, Andreas; Tomforde, Sven; Morold, Michel; David, Klaus; Sick, Bernhard. In Proceedings of the 8th International Joint Conference on Pervasive and Embedded Computing and Communication Systems, PECCS 2018, Porto, Portugal, July 29-30, 2018., pp. 215–222. 2018.
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„iPAT 2018 – 1. Interdisziplinärer Workshop des Graduiertenkollegs2050“.Laubach, A. In ZD-Aktuell, (14), p. 06253. 2018.
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GeopNu: Zwischenstand des Projekts.Braun, S. In ZD-Aktuell, (16), p. 06294. 2018.
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Intrinsic dimension of concept lattices.Hanika, Tom; Schneider, Friedrich Martin; Stumme, Gerd. In CoRR, abs/1801.07985. 2018.
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Geometric analysis is a very capable theory to understand the influence of the high dimensionality of the input data in machine learning (ML) and knowledge discovery (KD). With our approach we can assess how far the application of a specific KD/ML-algorithm to a concrete data set is prone to the curse of dimensionality. To this end we extend V.~Pestov's axiomatic approach to the instrinsic dimension of data sets, based on the seminal work by M.~Gromov on concentration phenomena, and provide an adaptable and computationally feasible model for studying observable geometric invariants associated to features that are natural to both the data and the learning procedure. In detail, we investigate data represented by formal contexts and give first theoretical as well as experimental insights into the intrinsic dimension of a concept lattice. Because of the correspondence between formal concepts and maximal cliques in graphs, applications to social network analysis are at hand.
Towards Collaborative Conceptual Exploration.Hanika, Tom; Zumbrägel, Jens. In ICCS, Vol. 10872 of Lecture Notes in Computer Science, P. Chapman, D. Endres, N. Pernelle (eds.), pp. 120–134. Springer, 2018.
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5G Based Collision Avoidance - Benefit from Unobtrusive Activities.Jahn, Andreas; Morold, Michel; David, Klaus. In Proceedings of the 2018 European Conference on Networks and Communications (EuCNC), pp. 352–356. IEEE, Ljubljana, Slovenia, 2018.
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Every year many vulnerable road users (VRUs), such as pedestrians or bicyclists, are killed or seriously injured in traffic accidents. To reduce the number of such traffic accidents several research groups are working on different solutions. The approach presented in this paper is based on wireless communications such as WLAN and 5G/LTE and a “context filter.” The “context filter” identifies vulnerable road users in potentially dangerous situations based on several inputs (e.g., location, movement direction). An identified dangerous situation is communicated between VRUs and cars using wireless communication. As one interesting context for identifying dangerous situations, this paper investigates how to recognize pedestrians stepping onto the road. Utilizing smartphone sensor data, the investigated approaches address three key challenges: inconsistent sensor data, overrepresentation of periodic activities, as well as the evaluation of the recognition. For each challenge, a possible solution is proposed. The results indicate that recognizing the “stepping onto the road” is possible and support the overall 5G based collision avoidance system.
Relevant Attributes in Formal Contexts.Hanika, Tom; Koyda, Maren; Stumme, Gerd. In CoRR, abs/1812.08868. 2018.
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„Ich denke, es ist wichtig zu verstehen, warum die Netzwerkanalyse jetzt populär und besonders interessant für die Forschung geworden ist.“.Hanika, Tom; Kibanov, Mark; Kropf, Jonathan; Laser, Stefan. In Digitale Bewertungspraktiken. Für eine Bewertungssoziologie des Digitalen, J. Kropf, S. Laser (eds.), pp. 165–188. Springer, Wiesbaden, 2018.
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Identifying ICT-Related Affective Events Across Life Domains and Examining their Unique Relationships with Employee Recovery.Braukmann, Johanna; Schmitt, Antje; Ďuranová, Lenka; Ohly, Sandra. In Journal of Business and Psychology, 33(4), pp. 529–544. 2018.
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The purpose of this study was to investigate the role of information and communication technology (ICT) use for employees by exploring affective ICT events and their relation to employee recovery. We conducted two daily diary studies with knowledge workers in Germany. In study 1 (N = 153), we followed a qualitative approach by developing a taxonomy of negative and positive ICT events at work and at home. We found 11 negative (e.g., multichannel use, work e-mails in the evening) and 10 positive ICT event clusters (e.g., utilizing idle times, availability at home). In study 2 (N = 154), we examined how the occurrence of ICT-related events in the evening is related to detachment from work and sleep quality using a multilevel design. Study 2 provided a differentiated picture of relationships between evening ICT events and recovery. Overall, results indicate that work-related ICT events in the evening—even in cases where they are appraised as positive—are detrimental for employee recovery. Our study contributes to the refinement of the operationalization of ICT use for future analyses of ICT impacts and sheds light on the differential effects of specific types of ICT events. ICT use conceptualized as the occurrence of affective events helps to advance our understanding of the diversity of ICT-related experiences. The negative effects of handling work e-mails at home imply that organizations should engage in optimizing their “e-mail culture.”
Behavior-based Service Change Detection.Jahl, Alexander; Tran, Tam Huu; Baraki, Harun; Geihs, Kurt. In 4th IEEE International Conference on Smart Computing (SMARTCOMP). IEEE, 2018.
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Wissenschaft, Forschung und Bildung – Einführung.Johannes, P. C. In Dokumentation zum Datenschutz mit Informationsfreiheitsrecht, I. Döhmann, S. Bretthauer (eds.). Nomos, Baden-Baden, 2018.
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Datenschutz im Smart Office.Braun, S. In ZD, (2), pp. 71–76. 2018.
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: Privatheit in der Rechtsprechung des BVerfG.Johannes, P. C. In ZD-Aktuell, (4), p. 06007. 2018.
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CAVE-basierte Nutzerstudie eines Aufenthalts-Empfehlungssystems.Hegenberg, J.; Kannengießer, N.; Klose, E.; Schmidt, L. In Mensch und Computer 2018 - Tagungsband (Dresden 2018), R. Dachselt, G. Weber (eds.), pp. 117–128. Gesellschaft für Informatik e. V, Bonn, 2018.
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Reiseassistenzsysteme sind vielversprechend, um individualisierte und kontextbezogene Unterstützung entlang intermodaler Reiseketten im öffentlichen Verkehr anzubieten. Hierbei stellen sowohl zeitkritische Situationen als auch solche mit längerer Wartezeit eine Belastung des Reisenden dar. Für letztere bietet das untersuchte System Assistenz durch individualisierte Gestaltungsvorschläge für längere Aufenthalte. In Vorbereitung auf eine großangelegte Feldstudie wurden vier Varianten des zugrundeliegenden Empfehlungssystems und ein Trainingsansatz zur Initialisierung des Nutzerprofils hinsichtlich der numerischen und der subjektiv wahrgenommenen Genauigkeit der Empfehlungen evaluiert. Die Benutzungsschnittstelle in einer optischen Durchsichtdatenbrille wird außerdem hinsichtlich ihrer Gebrauchstauglichkeit evaluiert. Für die Evaluation wurde eine Reise inkl. zweier längerer Aufenthalte mittels einer CAVE simuliert.
Nutzeridentifikation mit mobilen Endgeräten, Datenschutz und Datensicherheit.Braun, S.; Henzler, T.; Berg, A. In DuD, 42(11), pp. 673–679. 2018.
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Intrinsic Dimension of Geometric Data Sets.Hanika, Tom; Schneider, Friedrich Martin; Stumme, Gerd. 2018.
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The curse of dimensionality is a phenomenon frequently observed in machine learning (ML) and knowledge discovery (KD). There is a large body of literature investigating its origin and impact, using methods from mathematics as well as from computer science. Among the mathematical insights into data dimensionality, there is an intimate link between the dimension curse and the phenomenon of measure concentration, which makes the former accessible to methods of geometric analysis. The present work provides a comprehensive study of the intrinsic geometry of a data set, based on Gromov's metric measure geometry and Pestov's axiomatic approach to intrinsic dimension. In detail, we define a concept of geometric data set and introduce a metric as well as a partial order on the set of isomorphism classes of such data sets. Based on these objects, we propose and investigate an axiomatic approach to the intrinsic dimension of geometric data sets and establish a concrete dimension function with the desired properties. Our mathematical model for data sets and their intrinsic dimension is computationally feasible and, moreover, adaptable to specific ML/KD-algorithms, as illustrated by various experiments.
StaySmart-Ansatz zum kollaborativen Kompetenzaufbau, -erhalt und -austausch.Leimeister, Jan Marco; Schöbel, Sofia; Lehmann, Katja; Oeste-Reiß, Sarah; Söllner, Matthias. In Kompetenzentwicklung in analogen und digitalisierten Arbeitswelten. Gestaltung sozialer, organisationaler und technologischer Innovationen, D. Ahrens, G. Molzberger (eds.), pp. 89–106. 2018.
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Das neue Datenschutzrecht bei Polizei und Justiz - Europäisches Datenschutzrecht und deutsche Datenschutzgesetze.Johannes, P.; Weinhold. 2018.
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Stand der Anpassung der Datenschutzgesetze der Länder an die DS-GVO.Johannes, P. C. In ZD-Aktuell, (10), p. 06148. 2018.
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Privacy by Design und Privay by Default – Regelungen für Polizei- und Strafverfolgungsbehörden im Vergleich zur DS-GVO.Johannes, P. C. In ZD-Aktuell, (16), p. 06291. 2018.
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A Decentralized Resilient Short-Term Cache for Messaging.Heck, Henner; Kieselmann, Olga; Kopal, Nils; Wacker, Arno. In IFIP International Conference on Distributed Applications and Interoperable Systems (DAIS), Vol. 10853 of Lecture Notes in Computer Science, pp. 110–121. Springer, 2018.
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Messaging applications are among the most popular internet applications and people use them worldwide on a daily basis. Their supporting infrastructure, though consisting of a multitude of servers, is typically under central control. This enables censorship and seamless user profiling. A fully decentralized infrastructure, with decentralized control and redundant data storage, can mitigate these dangers. In this paper we evaluate the basic ability of decentralized networks created by the network overlay and data storage protocol Kademlia to serve as a short-term data cache for messaging applications. Our results show, that reliable retrieval of up to 20 replicas is possible.
Erste Ergebnisse des Forschungsprojekts „SANDRA“.Laufs, U; Maucher, J; Miedzianowski, Nadine; Rost, K; Saternus, Z. In ZD-Aktuell, p. 06151. 2018.
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Security Issues in Self-Improving System Integration - Challenges and Solution Strategies.Heck, Henner; Sick, Bernhard; Tomforde, Sven. In 2018 IEEE 3rd International Workshops on Foundations and Applications of Self* Systems (FAS*W), Trento, Italy, September 3-7, 2018, pp. 176–181. 2018.
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„Brasilien: Neues Datenschutzgesetz“.Laubach, A.; Dräger, M. In ZD-Aktuell, (14), p. 06254. 2018.
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Hosting capacity of low-voltage grids for distributed generation: Classification by means of machine learning techniques.Breker, Sebastian; Rentmeister, Jan; Sick, Bernhard; Braun, Martin. In Appl. Soft Comput., 70, pp. 195–207. 2018.
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Die Europäisierung des strafverfahrensrechtlichen Datenschutzes. Zum Anwendungsbereich der neuen Datenschutz-Richtlinie für Polizei und Justiz.Hornung, Gerrit; Schindler, Stephan; Schneider, Jana. In Zeitschrift für Internationale Strafrechtsdogmatik, pp. 566–574. 2018.
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FeSNOC: A Novel Feature Selection Algorithm Based on Niche Overlapping Coefficient.Hübener, Isabel; David, Klaus. In Proceedings of the 2018 IEEE International Conference on Pervasive Computing and Communications (PerCom), pp. 165 – 171. IEEE, Athens, Greece, 2018.
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Fakt oder Fake? – Falschinformationen im digitalen Zeitalter aus medienpsychologischer und rechtlicher Perspektive.Löber, L. I.; Rösner, L. In Sagen! Vom Erzählen zwischen Antike und digitalem Zeitalter. Zum 200. Jahrestag der Deutschen Sagen der Brüder Grimm, G. Kassel (ed.), pp. 87–97. 2018.
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Beschäftigtendatenschutz – Einführung –.Maier, N.; Ossoinig, V. In Dokumentation zum Datenschutz mit Informationsfreiheitsrecht, Döhmann, Bretthauer (eds.). Baden-Baden, 2018.
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Stellungnahme im Rahmen der öffentlichen Anhörung von Sachverständigen am 12. April 2018 zum „Gesetz über die Transparenz von Informationen im Freistaat Sachsen“, Gesetzentwurf der Fraktion BÜNDNIS 90/DIE GRÜNEN, APr IA 6/46. Maier, N. 2018.
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MOCCAA: A Delta-synchronized and Adaptable Mobile Cloud Computing Framework.Baraki, Harun; Schwarzbach, Corvin; Fax, Malte; Geihs, Kurt. In Proceedings of the 8th International Conference on Cloud Computing and Services Science 2018, SCITEPRESS (ed.), pp. 136–147. 2018.
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Mobile Cloud Computing (MCC) requires an infrastructure that is merging the capabilities of resource-constrained but mobile and context-aware devices with that of immovable but powerful resources in the cloud. Application execution shall be boosted and battery consumption reduced. However, a solution's practicability is only ensured, if the provided tools, environment and framework themselves are performant too and if developers are able to adopt, extend and apply it easily. In this light, we introduce our comprehensive and extendable framework MOCCAA (MObile Cloud Computing AdaptAble) and demonstrate its effectiveness. Its performance gain is mainly achieved through minimized monitoring efforts for resource consumption prediction, scalable and location-aware resource discovery and management, and, in particular, through our graph-based delta synchronization of local and remote object states. This allows us to reduce synchronization costs significantly and improve quality dimensions such as latency and bandwidth consumption.
SAM: A Semantic-aware Middleware for Mobile Cloud Computing.Baraki, Harun; Schwarzbach, Corvin; Jakob, Stefan; Jahl, Alexander; Geihs, Kurt. In 2018 IEEE 11th International Conference on Cloud Computing (CLOUD). IEEE, 2018.
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Mobile Cloud Computing (MCC) requires an infrastructure that is combining the capabilities of resource-constrained but mobile and context-aware devices with that of immovable but powerful resources in the cloud. Application execution shall be boosted and battery consumption reduced. Our goal is to relieve mobile devices by enabling applications to cooperate transparently with components provided by third parties remotely, locally, or both. For this purpose, we developed SAM - the Semantic-aware Middleware - and the SAM Store. The latter resembles a registry. It allows component providers to publish semantically enriched interfaces and to offer corresponding local and remote implementations. SAM makes use of the SAM Store to match local interprocess communication (IPC) messages transparently against local and remote components. This architecture facilitates the integration of powerful, but resource-intensive remote components, which may be prioritized over local ones, and fosters various patterns of cooperation that demonstrate useful solutions in the area of MCC. By means of a realistic scenario, our evaluation proves the efficiency with respect to latency and practicality.
Geographically Distributed Deployment of Reproducible HRI Experiments in an Interdisciplinary Research Context.Lücking, Phillip; Lier, Florian; Bernotat, Jasmin; Wachsmuth, Sven; Ŝabanović, Selma; Eyssel, Friederike. In Companion of the 2018 ACM/IEEE International Conference on Human-Robot Interaction, of HRI ’18, pp. 181–182. ACM, Chicago, IL, USA, 2018.
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Reproducible experiments are a major requirement for transparent, comparable and verifiable results in the field of human-robot interaction (HRI). Furthermore, a version-controlled and well-structured "ready to deploy" system setup of soft- and hard-ware for an HRI experiment opens up a range of innovative possibilities for interdisciplinary efforts as well as simplified participation of collaborators in the research community. However, making experiments reproducible is not a trivial task. It stems from the lack of agreed upon methodologies, tools and the inherent technical complexity. In this work we present our latest efforts in the context of an international and interdisciplinary research project to enable robotics researchers, software engineers, and social scientists to work together to reproduce a behavioral HRI experiment. The successful reproduction demonstrates that our tool chain approach meets the proposed requirements of the reproducibility problem. To the best of our knowledge, this is the first time an integrated systemic approach allowed an identical instantiation of a complete HRI experiment at geographically distributed locations.
Betriebliche und behördliche Datenschutzbeauftragte.Maier, Natalie; Ossoinig, Verena. In Das neue Datenschutzrecht - Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 220–228. Nomos, Baden-Baden, 2018.
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Das Netzwerkdurchsetzungsgesetz in der Umsetzung. Bilanz nach den ersten Transparenzberichten.Löber, Lena. In Multimedia und Recht, (1), A. Roßnagel (ed.), pp. 71–76. 2018.
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Bedeutung der Netzneutralität für die Industrie 4.0.Lurtz, Helmut; Engel, Friederike. In ZD-Aktuell, p. 05951. 2018.
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Mitlauschen bei den lieben Kleinen: Kindeswohl oder Kindesgefährdung? Editorial.Hornung, Gerrit. In Verbraucher und Recht, pp. 41–42. 2018.
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Die Vorkehrungen für die „Abmahnwelle“.Lurtz, Helmut. In ZD-Aktuell, p. 06292. 2018.
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„Interdisziplinäre Konferenz des ‚Forum Privatheit‘: Die Fortentwicklung des Datenschutzes“.Bieker, Felix; Geminn, Christian. In ZD-Aktuell, 2. 2018.
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Rechte der betroffenen Person.Hohmann, Carolin; Miedzianowski, Nadine. In Das neue Datenschutzrecht – Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetz, A. Roßnagel (ed.), pp. 125–142. Nomos, Baden-Baden, 2018.
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„Die Fortentwicklung des Datenschutzes“.Bieker, Felix; Geminn, Christian. In „Zur künftigen Fortentwicklung des Datenschutzes“, A. Roßnagel, M. Friedewald, M. Hansen (eds.), pp. 407–414. Springer Vieweg, Wiesbaden, 2018.
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Zur künftigen Fortentwicklung des Datenschutzes.Bieker, Felix; Geminn, Christian. In Die Fortentwicklung des Datenschutzes., A. Roßnagel, M. Hansen, M. Friedewald (eds.), pp. 387–394. Springer Vieweg, Wiesbaden, Germany, 2018.
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Where is my Device? Detecting the Smart Device’s Wearing Position in the Context of Active Safety for Vulnerable Road Users.Bieshaar, M. In Organic Computing: Doctoral Dissertation Colloquium, S. Tomforde, B. Sick (eds.). Kassel University Press, 2018.
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Tagungsbericht.Hofmann, Kai; Goeble, Thilo; Lurtz, Helmut; Wagner, Bernd. In Rechtsfragen der Industrie 4.0. Datenhoheit, Verantwortlichkeit, rechtliche Grenzen der Vernetzung, G. Hornung (ed.), pp. 199–212. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Erosion traditioneller Prinzipien des Datenschutzrechts durch Big Data.Hornung, Gerrit. In Big Data - Regulative Herausforderungen, W. Hoffmann-Riem (ed.), pp. 81–98. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Datenschutz und der Koalitionsvertrag der GroKo.Johannes, P. C. In ZD-Aktuell, (6), p. 06056. 2018.
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Cooperative Starting Movement Detection of Cyclists Using Convolutional Neural Networks and a Boosted Stacking Ensemble.Bieshaar, M.; Zernetsch, S.; Hubert, A.; Sick, B.; Doll, K. In IEEE Transactions on Intelligent Vehicles, 3(4). 2018.
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Towards Value Proposition Mining – Exploration of Design Principles.Augenstein, Dominik; Fleig, Christian; Dellermann, Dominik. In International Conference on Information Systems (ICIS). 2018.
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Datenschutzrechtliche Herausforderungen und Lösungen der Industrie 4.0.Hornung, Gerrit; Lurtz, Helmut. In MyCPS - Migrationsunterstützung für die Umsetzung menschzentrierter Cyber-Physical Systems. Abschlussbericht, W. Bauer, D. Marrenbach (eds.), pp. 83–97. Frauenhofer IAO, Stuttgart, Germany, 2018.
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Handlungsempfehlungen.Hornung, Gerrit; Hofmann, Kai. In Rechtsfragen der Industrie 4.0. Datenhoheit, Verantwortlichkeit, rechtliche Grenzen der Vernetzung, G. Hornung (ed.), pp. 213–220. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Datenschutz bei Big Data. Rechtliche und politische Implikationen.Hornung, Gerrit; Herfurth, Constantin. In Big Data – Chancen, Risiken, Entwicklungstendenzen, C. König, J. Schröder, E. Wiegand (eds.), pp. 149–184. Springer VS, Wiesbaden, Germany, 2018.
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Datenschutz als Herausforderung der Arbeit in der Industrie 4.0.Hornung, Gerrit. In Digitalisierung industrieller Arbeit. Die Vision Industrie 4.0 und ihre sozialen Herausforderungen, H. Hirsch-Kreinsen, P. Ittermann, J. Niehaus (eds.), pp. 233–255. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Analyzing Group Interaction on Networks of Face-to-Face Proximity using Wearable Sensors.Atzmueller, Martin; Thiele, Lisa; Stumme, Gerd; Kauffeld, Simone. In Proc. IEEE International Conference on Future IoT Technologies. IEEE Press, Boston, MA, USA, 2018.
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Industrie 4.0 und das Recht: Drei zentrale Herausforderungen.Hornung, Gerrit. In Rechtsfragen der Industrie 4.0. Datenhoheit, Verantwortlichkeit, rechtliche Grenzen der Vernetzung, G. Hornung, K. Hofmann (eds.), pp. 9–64. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Rechtsverträgliche Technikgestaltung und technikadäquate Rechtsentwicklung. Johannes, Paul; Roßnagel, Alexander; Hornung, Gerrit; Geminn, Christian. Vol. 30 Jahre Projektgruppe verfassungsverträgliche Technikgestaltung. Kassel University Press, 2018.
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The Wireless Seat Belt Requirements, Experiments, and Solutions for Pedestrian Safety.Bachmann, Marek; Morold, Michel; David, Klaus. In Proceedings of the 2018 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops), pp. 250 – 255. IEEE, Athens, Greece, 2018.
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Datenschutz im Polizei- und Sicherheitsrecht.Johannes, Paul. In Dokumentation zum Datenschutz mit Informationsfreiheitsrecht, S. Bretthauer, L. Döhmann (eds.). Baden-Baden, 2018.
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„Datenschutz-Grundverordnung – eine neue Ära des Datenschutzes?“.Johannes, Paul C.; Geminn, Christian. In ZD-Aktuell, 13(8). 2018.
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Archivierung.Johannes, Paul Christoper. In Das neue Datenschutzrecht – Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 314–324. Nomos, Baden-Baden, 2018.
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Grundrechtecharta und Grundgesetz.Johannes, Paul Christoper. A. Roßnagel (ed.), pp. 54–61. Nomos, Baden-Baden, 2018.
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Wissenschaftliche Forschung.Johannes, Paul Christopher. In Das neue Datenschutzrecht – Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.). Nomos, Baden-Baden, 2018.
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Einführung in den Datenschutz.Johannes, Paul. In TRUST – Training zum Umgang mit sensiblen Forschungsdaten. Universität Marburg, 2018.
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Sind neue Technologien datenschutzrechtlich regulierbar? Herausforderungen durch „Smart Everything“.Hornung, Gerrit. In Die Fortentwicklung des Datenschutzes., A. Roßnagel, M. Hansen, M. Friedewald (eds.), pp. 315–336. Springer Vieweg, Wiesbaden, Germany, 2018.
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Rechtsfragen der Industrie 4.0. Datenhoheit, Verantwortlichkeit, rechtliche Grenzen der Vernetzung,. Hornung, Gerrit. Nomos Verlagsgesellschaft, Baden-Baden, Germany, 2018.
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Desinformation aufdecken und bekämpfen. Handlungsempfehlungen, Policy Paper DORIAN, Schriftenreihe Forum Privatheit. K. Bader, K.; Jansen, C.; Johannes, P. C.; Krämer, N.; Kreutzer, M.; Löber, L. I.; Rinsdorf, L.; Rösner, L.; Roßnagel, A. Fraunhofer SIT, Darmstadt, 2018.
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Starting Movement Detection of Cyclists Using Smart Devices.Bieshaar, M.; Depping, M.; Schneegans, J.; Sick, B. In DSAA. Turin, Italy, 2018.
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Dynamische Zertifizierung – Der Weg zum verordnungskonformen Cloud Computing.Hofmann, Johanna M. In Die Fortentwicklung des Datenschutzes., A. Roßnagel, M. Hansen, M. Friedewald (eds.), pp. 293–310. Springer Vieweg, Wiesbaden, Germany, 2018.
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How to Manage Crowdsourcing Platforms Effectively?Blohm, Ivo; Zogaj, Shkodran; Bretschneider, Ulrich; Leimeister, Jan Marco. In California Management Review (CMR), 60(2), pp. 122–149. 2018.
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To profit from crowdsourcing, organizations can engage in four different approaches: microtasking, information pooling, broadcast search, and open collaboration. This article presents 21 governance mechanisms that can help organizations manage their crowdsourcing platforms. It investigates the effectiveness of these governance mechanisms in 19 case studies and recommends specific configurations of these mechanisms for each of the four crowdsourcing approaches. Also, it offers guidance to organizations that host a crowdsourcing platform by providing recommendations for implementing governance mechanisms into their platforms and building up governance capabilities for crowdsourcing.
Dynamic Solutions in Service Systems.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In AIS SIG SVC Pre-ICIS Workshop (Pre-ICIS). 2018.
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With the rapidly increasing number and complexity of service demands, service providers need to become even more flexible and faster. To accommodate this, the service system needs to dynamically reconfigure its required resourced based on the context of both service providers and the customer. The resulting chosen service system configuration is called a dynamic solution. Our research question is therefore as follow: How can we implement the characteristic of dynamic solutions based on the service system model (SSM)? We demonstrate our model using a real-life citizen-based produce delivery service. We contribute by being able to quantify service system configurations and compare different configurations dynamically. Keywords: Service operations, operationalizing
Verantwortung für die Datenverarbeitung.Blazy, Stephan. In Das neue Datenschutzrecht - Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 155–163. Nomos, Baden-Baden, 2018.
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Active Sorting -- An Efficient Training of a Sorting Robot with Active Learning Techniques.Herde, Marek; Kottke, Daniel; Calma, Adrian; Bieshaar, Maarten; Deist, Stephan; Sick, Bernhard. In International Joint Conference on Neural Networks. Rio de Janiero, Brazil, 2018.
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Sampling Strategies for Representative Time Series in Load Flow Calculations.Henze, Janosch; Kutzner, Stephan; Sick, Bernhard. In Data Analytics for Renewable Energy Integration. Technologies, Systems and Society - 6th ECML PKDD Workshop, DARE 2018, Dublin, Ireland, September 10, 2018, Revised Selected Papers, pp. 27–48. 2018.
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Smarte Regulierung in Informationskollektiven. Bausteine einer Informationsregulierung im Internet der Dinge.Husemann, Charlotte; Pittroff, Fabian. In Die Fortentwicklung des Datenschutzes., A. Roßnagel, M. Friedewald, M. Hansen (eds.), pp. 337–360. Springer Vieweg, Wiesbaden, Germany, 2018.
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Fitness-Tracking als Informationsproblem. Zu den Potenzialen und Herausforderungen rechtlicher Regulierung und pädagogischer Vermittlung.Husemann, Charlotte; Pittroff, Fabian; Schulz, Andreas D. In Datenschutz und Datensicherheit, (11), pp. 694–700. 2018.
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A User-based Comparison of Two Augmented Reality Glasses.Klose, E. M.; Schmidt, L. In 25th IEEE Conference on Virtual Reality and 3D User Interfaces (Reutlingen 2018), K. Kiyokawa, F. Steinicke, B. Thomas, G. Welch (eds.), pp. 603–604. IEEE, Piscataway, 2018.
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We present a scenario-based laboratory study with 40 participants comparing two augmented reality (AR) glasses in a travelling scenario. In a within-subject design, the binocular Epson Moverio BT-200 and the monocular Vuzix M100 were compared with regard to performance, acceptance, workload and preference. While performance was equal with both glasses, the Epson Moverio BT-200 glasses got higher acceptance and lower workload ratings and were preferred by the majority of the participants. The findings provide knowledge on human factors in AR glasses usage.
Extended Cognition.Klumbytė, Goda. In Posthuman Glossary, R. Braidotti, M. Hlavajova (eds.), pp. 148–150. Bloomsbury Academic, London, 2018.
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A Hypergraph-based Modeling Approach for Service Systems.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In INFORMS International Conference on Service Science (ICSS). 2018.
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Currently, research on service science has emerged as its own discipline, where service systems are its basic unit of analysis. However, without a clearly defined modeling approach for service systems, analyzing a service system is challenging. We therefore propose a conceptual hypergraph-based modeling approach, which can be used to model services for both traditional goods-dominant businesses, as well as service-businesses. We define key elements of a service system while drawing upon hypergraph theory and present three modeling properties which are required to model a service systems graph (SSG). The focus of SSGs is to describe the relationships between the various resources, actors and activities, thus configuring a service system. It provides the foundation for computer graphic simulations and database applications of service business structure for future research.
Nutzerorientierte Anforderungsanalyse für ein adaptiv lernendes Reiseassistenzsystem mit Datenbrillen.Klose, E.; Eis, A.; Hegenberg, J.; Schmidt, L. In Zeitschrift für Arbeitswissenschaft, 72(1), pp. 3–12. 2018.
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Für die Entwicklung eines persönlichen, adaptiv lernenden Reiseassistenzsystems für den öffentlichen Verkehr auf Basis von Augmented Reality wurde in der Anforderungsanalyse ein Mixed-Methods-Ansatz mit Fokusgruppen (n = 40) und einer Online-Befragung (n = 311) gewählt. Die Ergebnisse zeigen, dass ein Großteil der Nutzer sich vorstellen kann, ein Reiseassistenzsystem zu nutzen, viele bei der Verwendung von Datenbrillen und Sprachinteraktion im öffentlichen Raum jedoch Bedenken haben. Als wichtigste Funktionen eines Reiseassistenzsystems werden die Unterstützung im Störungsfall, die Fußgängernavigation sowie die Versorgung mit Informationen zur Reisekette angesehen. Basierend auf den erhobenen Daten wurden Personas und Szenarien entworfen. Diese Werkzeuge ermöglichen es, dass sich die an der Entwicklung beteiligten Personen besser in den zukünftigen Nutzer des Reiseassistenzsystems sowie in den Nutzungskontext hineinversetzen und Gestaltungslösungen aus Nutzersicht beurteilt werden können. Praktische Relevanz: Intermodale Mobilitätsketten sowie die zunehmende Komplexität von Verkehrsknotenpunkten stellen Reisende vor die Herausforderung, unter Zeitdruck herauszufiltern, welche aus der Fülle der zur Verfügung stehenden Informationen für sie in der aktuellen Situation relevant sind. Dieser Beitrag analysiert, welche Informationen Reisende wann benötigen, mit dem Ziel, die Entwicklung von Assistenzsystemen zu unterstützen, die Informationen situations- und nutzergerecht zur Verfügung stellen und so die Beanspruchung beim Reisen reduzieren.
Das Fachgebiet Gender MINT an der Hochschule Hannover. Lehrangebot für vielfältige Studierendengruppen wahrnehmbar attraktiver gestalten.Bläsing, L. M.; Götschel, H. In Die Ingenieurin, 125(2), pp. 11–14. 2018.
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When Thinking about Work Makes Employees Reach for their Devices. A Cross-lagged Panel Diary Study.Heissler, Clara; Ohly, Sandra. In Academy of Management Proceedings, 2018(1). 2018.
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Previous research assumed that work-related ICT use impairs psychological detachment from work. However, since past studies assessed both variables cross-sectionally, little is actually known about the direction of effects in the relationship. This 5-day diary study implemented a cross-lagged panel design to shed light on the relationship between work-related ICT use and detachment (N = 211 employees, N = 2816 data points). Contrary to current research consensus we found that psychological detachment was related to an increase in work- related ICT use, but not vice versa. Furthermore, our results support the notion that unfinished work tasks act as a job stressor preceding both variables. Our findings suggest that work-related ICT use should not be treated as a job stressor but as a strategy employees rely on to cope with a high workload.
Towards Bridging the Gap between Business Model Innovation and Practice Using Hypergraph-based Modeling.Li, Mahei Manhai; Peters, Christoph; Ernst, Sissy-Josefina; Leimeister, Jan Marco. In INFORMS International Conference on Service Science (ICSS). 2018.
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Reconceptualizing Service Systems – Introducing Service System Graphs.Li, Mahei Manhai; Peters, Christoph. In International Conference on Information Systems (ICIS). 2018.
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Currently, research on service science has emerged as its own discipline, where service systems are its basic unit of analysis. However, without a clearly defined modeling approach for service systems, analyzing a service system is challenging. We therefore propose a conceptual hypergraph-based modeling approach, which can be used to model services for both traditional goods-dominant businesses, as well as service-businesses. We define key elements of a service system while drawing upon hypergraph theory and present three modeling properties which are required to model a service systems graph (SSG). The focus of SSGs is to describe the relationships between the various resources, actors and activities, thus configuring a service system. It provides the foundation for computer graphic simulations and database applications of service business structure for future research.
Einführung von Crowd-Based Support Dienstleistungen zur Verbesserung der Softwareeinführung.Li, Mahei Manhai; Billert, Matthias Simon; Dellermann, Dominik; Peters, Christoph; Leimeister, Jan Marco. In Service Engineering, K. Meyer, S. Klingner, C. Zinke (eds.), pp. 133–149. Springer Fachmedien, Wiesbaden, Germany, 2018.
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A service system modelling approach.Li, Mahei Manhai. In International Conference on Exporing Service Science (IESS). 2018.
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The Impact of Physical Activities on the Physiological Response to Emotions.Heinisch, Judith; Hübener, Isabel; David, Klaus. In Proceedings of the 2018 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops), pp. 860 – 865. IEEE, Athens, Greece, 2018.
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Die europäische Datenschutz-Grundverordnung - Der Anbruch einer neuen Ära.Herfurth, Constantin; Schinder, Stephan; Wagner, Bernd. In Bonner Rechtsjournal, pp. 16–22. 2018.
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Innovating Beyond the Fuzzy Front End: How to Use Reward-Based Crowdfunding to Co-create with Customers.Lipusch, Nikolaus; Dellermann, Dominik; Oeste-Reiß, Sarah; Ebel, Philipp. In Hawaii International Conference on System Sciences (HICSS), pp. 4202–4211. 2018.
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Current research suggests that crowdfunding not only serves as an alternative source of capital but also as a flexible tool allowing start-ups to systematically integrate a crowd into their innovation processes. However, an adequate understanding of how start-ups can systematically leverage the co-creation potential of their early customers during crowdfunding is still nascent. Against this background, the aim of this research is to conceptualize and examine the concept of co-creation in the context of reward-based crowdfunding. In doing so, we distinguish it from other methods of user integration in the realm of open innovation and discuss how entrepreneurs can leverage reward-based crowdfunding to engage their customers in the development and deployment of their product and service offerings.
Rechtsverträgliche Gestaltung von Cloud-Services.Hofmann, Johanna; Roßnagel, Alexander. In Management sicherer Cloud-Services, H. Krcmar, C. Eckert, A. Roßnagel, A. Sunyaev, M. Wiesche (eds.), pp. 25–57. Springer, 2018.
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Datenschutz stärken, Innovationen ermöglichen – Wie man den Koalitionsvertrag ausgestalten sollte, Policy Paper des Forum Privatheit. Bile, Tamer; Geminn, Christian; Grigorjew, Olga; Johannes, Paul Christian; Karaboga, M.; Krämer, N.; Maier, Natalie; Martin, N.; Müller, Johannes; Nebel, Maxi; Friedewald, M.; Bremert, B. A. Roßnagel (ed.). Karlsruhe, 2018.
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Vertrauensschutz durch Zertifizierung.Hofmann, Johanna; Roßnagel, Alexander. In Management sicherer Cloud-Services, H. Krcmar, C. Eckert, A. Roßnagel, A. Sunyaev, M. Wiesche (eds.), pp. 69–80. 2018.
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Handlungsempfehlungen.Hofmann, Johanna; Lins, Sebastian; Lang, Michael; Banse, Christian; Doll, Bernhard; Kühn, Ramona; Laatzen, Britta; de Meer, Hermann; Neubauer, Christine; Roßnagel, Alexander; Stephanow, Philipp; Sunyaev, Ali; Weiss, Andreas; Wiesche, Manuel; Krcmar, Helmut. In Management sicherer Cloud-Services, H. Krcmar, C. Eckert, A. Roßnagel, A. Sunyaev, M. Wiesche (eds.), pp. 379–390. 2018.
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Computers, Privacy & Data Protection (CPDP), 24. Januar bis 26. Januar 2018 in Brüssel.Bile, T. In DuD, 42(4), pp. 266–267. 2018.
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"Fördern und Fodern: Regelungsformen zur Anreizgestaltung für einen wirksameren Schutz von Privatheit und informationeller Selbstbestimmung".Bile, Tamer. In Privatheit und selbstbestimmtes Leben in der digitalen Welt, M. Friedewald (ed.), pp. 83–126. Wiesbaden, 2018.
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Entgrenzungen des Konsums. Dokumentation der Jahreskonferenz des Netzwerks Verbraucherforschung.Kenning, Peter; Lamla, Jörn. 2018.
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Fördern und Fordern: Regelungsformen zur Anreizgestaltung für einen wirksameren Schutz von Privatheit und informationeller Selbstbestimmung.Bile, Tamer; Geminn, Christian; Grigorjew, Olga; Husemann, Charlotte; Nebel, Maxi; Roßnagel, Alexander. In Privatheit und selbstbestimmtes Leben in der digitalen Welt, Interdisziplinäre Perspektiven auf aktuelle Herausforderungen des Datenschutzes, Friedewald (ed.), pp. 83–126. Springer Vieweg, 2018.
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„Fördern und Fordern – Regelungsformen zur Anreizgestaltung für einen wirksameren Schutz von Privatheit und Selbstbestimmung“.Bile, Tamer; Geminn, Christian; Grigorjew, Olga; Husemann, Charlotte; Nebel, Maxi; Roßnagel, Alexander. In „Privatheit und selbstbestimmtes Leben in der digitalen Welt – Interdisziplinäre Perspektiven auf aktuelle Herausforderungen des Datenschutzes“, M. Friedewald (ed.), pp. 83–126. Springer Vieweg, 2018.
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Gegenüberstellung – Verfahrensverzeichnisse für Polizei- und Strafverfolgungsbehörden nach BDSG, DS-GVO und JI-Richtlinie.Johannes, P. C. In ZD-Aktuell, (8), p. 06100. 2018.
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Design and Evaluation of a Natural User Interface for Piloting an Unmanned Aerial Vehicle.Herrmann, R.; Schmidt, L. In i-com - Zeitschrift für interaktive und kooperative Medien, 17(1), pp. 15–24. 2018.
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Controlling an unmanned aerial vehicle is challenging and requires an intensive training. One cause is the teleoperation with the conventional input device, the remote control, whose functions are complicate. This paper presents an alternative concept for the teleoperation. Its realization includes a Thalmic Myo gesture control wristlet and a Microsoft HoloLens head-mounted display. These devices are used to implement an augmented reality interface, a tactile feedback and a gesture and speech input. Finally, this implementation has been evaluated with 30 participants and compared with a conventional remote control. The results show that the proposed interface is a good solution but does not reach the performance of the remote control.
Adaptive kNN Using Expected Accuracy for Classification of Geo-Spatial Data.Kibanov, Mark; Becker, Martin; Müller, Jürgen; Atzmueller, Martin; Hotho, Andreas; Stumme, Gerd. In Proc. 33rd ACM Symposium On Applied Computing. ACM Press, New York, NY, USA, 2018.
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Tracking - Beschreibung und Bewertung neuer Methoden. Bile, Tamer; Nebel, Maxi; Grigorjew, O. Fraunhofer ISI, Karlsruhe, 2018.
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Data Revocation on the Internet. Kieselmann, Olga. In of ITeG - Interdisciplinary Research on Information System Design. kassel university press, 2018.
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After publishing data on the Internet, the data publisher loses control over it. However, there are several situations where it is desirable to revoke published information. To support this, the European Commission has elaborated the General Data Protection Regulation (GDPR), which is mandatory for all countries in the European Union and must be applied from 25 May 2018. In particular, this regulation requires that providers must delete the data on user's demand. However, the data might already have been copied by third parties. Therefore, Article 17 of the GDPR includes the regulation that the provider must also inform all affected third parties about the user's request. Hence, the providers would need to track every access, which is hard to achieve. This technical infeasibility is a gap between the legislation and the current technical possibilities. To close this gap, we analyse the possibilities for a technical realisation of data deletion and propose a solution, which is based on the combination of the technical mechanisms and the obligation to follow the legal regulations of the GDPR. Our technical solution is a distributed and decentralized Internet-wide data revocation service (DRS). Hereby, we aim to support users to remain in control over their data even after publishing them on the Internet, and to give providers a possibility to follow the legal regulations of the Article 17 of the GDPR. With the DRS, the user is able to notify automatically and simultaneously all affected providers about her revocation request of a certain data object. Thus, we implicitly provide the notification of third parties about the user's request. Hereby, we propose two approaches how to distribute the revocation notification from users to providers: (1) to push the revocation requests to providers or (2) providers pull the revocation requests by themselves. Elaborating the DRS, protection of user's privacy and anonymity on the Internet is our central objective. To achieve this with a distributed and decentralized system, we supplement the DRS with a new privacy-aware fine-grained access control. We evaluate the DRS and its access control in terms of attacker resilience, computational and memory effort both through theoretical analysis and through simulations.
Löschen im Internet – rechtlich gefordert und technisch möglich!Kieselmann, Olga; Wacker, Arno. In Datenschutz und Datensicherheit (DuD), 42/7(7/2018), pp. 437–441. 2018.
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Die im Art. 17 der Datenschutz-Grundverordnung (DSGVO) enthaltene Regelungen für das Löschen, insbesondere die Pflicht, Dritte über die Löschanfragen zu informieren, sind mit einem hohen Aufwand für die Verantwortlichen verbunden, sodass sie ohne eine technische Unterstützung in der Praxis nicht umgesetzt werden können. Die zurzeit jedoch fehlenden technischen Lösungen führen zu einer Lücke zwischen den Rechtsvorschriften und den derzeitigen technischen Möglichkeiten, während die DSGVO ab Mai 2018 anzuwenden ist. Um diese Lücke zu schließen, wird im Folgenden zunächst analysiert, welche Möglichkeiten im Allgemeinen bestehen, das Löschen im Internet gemäß Art. 17 technisch umzusetzen. Anschließend wird eine Lösung für die Verteilung der Löschanfragen an die Verantwortlichen vorgestellt, das auf der Kombination der Technik mit dem Gesetz beruht und sowohl den Betroffenen als auch den Verantwortlichen ein Werkzeug zur Unterstützung des Art. 17 zur Verfügung stellt.
Developing And Implementing Citizen-initiated Services.Billert, Matthias Simon. In International Conference on Exporing Service Science (IESS). 2018.
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Most citizen participation concepts in city administrations are not sufficiently developed and stop at the idea phase of service engineering, which leads to challenges for administrations. However, top-down approaches of the government fail because citizens do not accept the invitation to participate and bottom-up approaches of citizen initiatives claim the attention and support of administrations. To counteract this, citizens are involved as experts of their everyday life. Following design science research, we iteratively build the “digitalization street”, which is a portal that systematically guides the citizens through the development of own services. For a formative and artificial evaluation, we used a framework with a human risk and effectiveness strategy. Thus, we contribute to the existing body of knowledge by systematically reconditioned knowledge about citizen sensing and we exhibit requirements for guidelines concerning how citizens can develop own services that can be implemented in the city administrations.
Dienstleistungssysteme im Smart City Kontext: Herausforderungen, Anwendungsfälle und Lösungskonzepte.Billert, Matthias Simon; Li, Mahei Manhai; Persch, Jan Martin; Peters, Christoph; Leimeister, Jan Marco. In Die informatisierte Service-Ökonomie, Vol. 1, C. Arnold, H. Knödler (eds.), pp. 297–308. Springer Gabler, Wiesbaden, Hessen, 2018.
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Erstellung neuer Geschäftsmodelle für IKT-basierte, personenbezogene Dienstleistungssysteme.Kleinschmidt, Stefan; Ebel, Philipp; Peters, Christoph; Leimeister, Jan Marco. In Service Business Development: Strategien – Innovationen – Geschäftsmodelle, Vol. 1, M. Bruhn, K. Hadwich (eds.), pp. 379–402. Springer Nature, Wiesbaden, Germany, 2018.
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Does the Ability to Choose Matter? On the Relationship between Bring-your-own Behavior and IT Satisfaction.Klesel, Michael; Kampling, Henrik; Bretschneider, Ulrich; Niehaves, Björn. In Communications of the Association for Information Systems, 43(36), pp. 690–710. 2018.
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Employees increasingly complete organizational tasks using privately owned consumer technologies such as private devices (e.g., smartphones) or private Internet accounts (e.g., email accounts). Higher satisfaction constitutes a major reason for this bring-your-own behavior (BYOB). However, little research has theoretically explored and empirically tested this assumption. This study sheds light on this phenomenon by analyzing the effect of BYOB on IT satisfaction. Drawing from social cognitive theory, we propose choice self-efficacy as a new construct that intermediates the relationship between BYOB and IT satisfaction. Building on results from survey data (n = 400), we provide new evidence that BYOB has a positive effect on IT satisfaction whereby choice self-efficacy plays a vital element as it mediates this relationship. Since IT satisfaction shapes how people use technology and how they perform with it, we derive important implications for future research on IT consumerization. Furthermore, we provide several conclusions for practitioners and discuss how to enhance IT satisfaction and choice self-efficacy.
Grinding A Diamond - The Iterative Development of Citizen-Initiated Services.Billert, Matthias Simon; Peters, Christoph. In European Conference on Information Systems (ECIS). 2018.
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Many city administrations follow the smart city concept to grasp the potential of citizen participation. However, most participation concepts are not developed thoroughly, this leading to unexploited poten-tial. Citizens are experts of their everyday life and are best aware of their personal needs. However, current forms of citizen participation stop at the idea phase of service engineering. Following design science research, we iteratively build and evaluate a so-called “digitalization street” which aims to systematically guide the citizens through the refinement and further development of their services. This digitalization street is implemented in a mid-size European city and integrates five modules which let citizens (1) describe their project proposal, (2) concretise according strengths, weaknesses, opportuni-ties and threats, (3) identify the gain creators and pain relievers, (4) create their solution, (5) present their solution. Based on literature and a requirement elicitation workshop, a first instantiation of the artefact was developed. We contribute to the existing body of knowledge by presenting a framework for creating services based on a citizen-centric approach. We exhibit how the digitalization street can be implemented into existing processes in the city administration and help to increase the citizen par-ticipation from a project to an evaluated prototype.
Überwachung am Arbeitsplatz – Amazon patentiert neues Wearable.Braun, S. In ZD-Aktuell, (4), p. 06008. 2018.
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A Complementor ́s Perspective on Co-Innovation Risk.Dellermann, Dominik; Lipusch, Nikolaus. In Social Science Research Network (SSRN). 2018.
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Towards a Pattern Language for Smart Personal Assistants.Knote, Robin; Söllner, Matthias; Leimeister, Jan Marco. In Conference on Pattern Languages of Programs (PLoP). 2018.
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Supporting users in their daily activities, thus, making their lives more comfortable, has long been a goal for consumer-oriented systems development. With the rise of smart personal assistants (SPAs), however, we have reached a new milestone along the path towards this goal. These systems assist their owners by providing personalized and context-dependent information and service. Today's implementations reach from conversational agents, such as Siri, Cortana or Google Assistant, over chatbots, which are primarily text-based, to cognitive assistants, which assist according to a user's current cognitive or emotional state. However, although both research and practice proceed with full pace, recurring design elements of SPAs have not yet been investigated. We hence propose a pattern language for smart personal assistants to guide further empirical and design efforts. Therefore, we review existing information systems, computer science and human-computer interaction literature to find recurring design characteristics among 115 different assistants. The resulting pattern language contains 22 patterns that specify the interaction behavior and the intelligence of smart personal assistants.
A Concept for Productivity Tracking based on Collaborative Interactive Learning Techniques.Calma, Adrian; Kuhn, Jochen; Leimeister, Jan Marco; Lukowicz, Paul; Oeste-Reiß, Sarah; Schmidt, Albrecht; Sick, Bernhard; Stumme, Gerd; Tomforde, Sven; Zweig, Anna Katharina. In International Conference on Architecture of Computing Systems (ARCS). 2018.
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The academic success of individual students differs widely and it depends on various factors, ranging from financial to social and to health aspects. In this article, we propose a concept for a novel productivity tracking system that provides the basis for a self-assessment of academic behaviour and that can be used by students to support their academic success. The development of such a system requires interdisciplinary efforts, most of them located in the field of collaborative interactive learning (CIL) that is grounded on a socio-technical system perspective. The system is interactive since it is based on bidirectional communication, collaborative in the sense that it uses students, other students, and external sources such as the Internet for generation of knowledge, and learning in the sense that it continuously and autonomously acquires knowledge. It is further self-organised as it decides about interaction partners and self-adaptive in terms of modifying its behaviour according to changing conditions.
Decision Support with Hybrid Intelligence.Calma, Adrian; Dellermann, Dominik. In Organic Computing -- Doctoral Dissertation Colloquium 2018. Würzburg, Germany, 2018.
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Clones in Social Networks.Doerfel, Stephan; Hanika, Tom; Stumme, Gerd. In CoRR, abs/1802.07849. 2018.
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It is well known that any bipartite (social) network can be regarded as a formal context $$(G,M,I)$$. Therefore, such networks give raise to formal concept lattices which can be investigated utilizing the toolset of Formal Concept Analysis (FCA). In particular, the notion of clones in closure systems on $$M$$, i.e., pairwise interchangeable attributes that leave the closure system unchanged, suggests itself naturally as a candidate to be analyzed in the realm of FCA based social network analysis. In this study, we investigate the notion of clones in social networks. After building up some theoretical background for the clone relation in formal contexts we try to find clones in real word data sets. To this end, we provide an experimental evaluation on nine mostly well known social networks and provide some first insights on the impact of clones. We conclude our work by nourishing the understanding of clones by generalizing those to permutations of higher order.
Semi-supervised active learning for support vector machines: A novel approach that exploits structure information in data.Calma, A.; Reitmaier, T.; Sick, B. In Information Sciences, 456, pp. 13–33. 2018.
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Clones in Graphs.Doerfel, Stephan; Hanika, Tom; Stumme, Gerd. In ISMIS, Vol. 11177 of Lecture Notes in Computer Science, M. Ceci, N. Japkowicz, J. Liu, G. A. Papadopoulos, Z. W. Ras (eds.), pp. 56–66. Springer, 2018.
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Analyse offener Datenquellen durch die Polizei: Entgrenzte Internet- und Darknetaufklärung in der Strafverfolgung?C. Johannes, Paul. In Die Fortentwicklung des Datenschutzes., A. Roßnagel, M. Hansen, M. Friedewald (eds.), pp. 151–174. Springer Vieweg, Wiesbaden, Germany, 2018.
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Ad-Hoc-Kommunikation – Gesellschaftlich wünschenswert, rechtlich ungeregelt.Almon, Lars; Álvarez, Flor; Lieser, Patrick; Meuser, Tobias; Schaller, Fabian. In Die Fortentwicklung des Datenschutzes., Vol. Springer, A. Roßnagel, M. Hansen, M. Friedewald (eds.), pp. 77–98. Springer Vieweg, Wiesbaden, Germany, 2018.
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The Future of Entrepreneurship: Crowd-Based Incubation.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp. In Social Science Research Network (SSRN). 2018.
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The Other Human in The Loop -- A Pilot Study to Find Selection Strategies for Active Learning.Kottke, Daniel; Calma, Adrian; Huseljic, Denis; Sandrock, Christoph; Kachergis, George; Sick, Bernhard. In International Joint Conference on Neural Networks. Rio de Janiero, Brazil, 2018.
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Acceptability by Design: Integrating Gender Research in HCI.Draude, Claude; Klumbyte, Goda. In Proceedings of CHI’18 Workshop on (Un)Acceptable!?! – Re-thinking the Social Acceptability of Emerging Technologies, M. Koelle, H. Proﬁta, T. Olsson, R. Mitchell, J. Williamson, S. Kane, S. Boll (eds.). 2018.
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Re-Considering Bias: What Could Bringing Gender Studies and Computing Together Teach Us About Bias in Information Systems?Draude, Claude; Klumbyte, Goda; Treusch, Pat. In Proceedings of International Workshop on Bias in Information, Algorithms, and Systems co-located with 13th International Conference on Transforming Digital Worlds (iConference 2018), J. Bates, P. D. Clough, R. Jäschke, J. Otterbacher (eds.). CEUR Workshop Proceedings, 2018.
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Nudging Privacy in Digital Work Systems – Towards the Development of a Design Theory.Janson, Andreas; Schöbel, Sofia. In International Conference on Information Systems (ICIS). 2018.
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Digitization changes our society, the way we work and the way we generate value in work systems. More precisely, it equally affects how business and employees organize their work. While there is a tremendous innovation potential for businesses such as more flexible and efficient work arrangements, there are also tremendous privacy risks. Such privacy risks especially relate to issues that employees leave data traces in every working step while being oftentimes not aware of their generated data. Employees leave data traces on intranet platforms such as Wikis and on external work tools such as Slack and reveal not only personal information but also company insights. At the same time companies must handle new privacy regulations such as the European General Data Protection Regulation (GDPR) which do not only affect companies in the European countries but also providers of information systems (IS) all around the world that offer their services in Europe. Thus, innovative approaches for considering challenges that exist because of privacy related issues are needed. A promising approach to overcome the aforementioned privacy issues of digital working environments is the application of digital nudges in IS – small design modifications in digital choice environments which guide peoples’ behavior (Weinmann et al. 2016). The nudge theory – originally derived from behavioral economics– is based on the irrational behavior of human beings. A nudge “is any aspect of the choice architecture that alters people’s behavior in a predictable way without forbidding any options or significantly changing their economic incentives” (Thaler and Sunstein 2008, p. 6) and is typically applied in offline environments, e.g., to nudge individuals for being organ donors through a default opt-in. By relying on the concept of nudging, individuals in digital work system could be nudged to improve their decisions when disclosing data. This is especially prevalent, since many individuals are not aware about how their data is used. As such, there is a lack of research regarding nudging in context of digital work systems and privacy which should be addressed in a socio-technical research approach. By examining the impact and perception of digital nudges in work systems, we want to shed light on the application, design and effects of nudges to overcome challenges that arise because of privacy related issues. We therefore first examine use cases and requirements for nudging in digital work system under the consideration of users, companies and other stakeholders. Since we draw on a socio-technical view, we incorporate requirements that relate to a legal as well as an ethical perspective for nudging privacy. By this means, we develop a design theory for privacy nudging by an iterative design and evaluation process in the field. The ultimate goal is to improve decisions concerning data disclosure and, secondary, increase by this means trust and acceptance of digital work systems by lowering privacy concerns. By developing a design theory, we contribute to the body of knowledge with a more profound understanding of digital nudging in the context of privacy as well as with prescriptive design knowledge for nudging in digital work systems.
Blickbewegungsstudie zu Orientierung und Informationsbedarf beim Verkehrsmittelwechsel am Frankfurter Flughafen.Funk, J.; Klose, E. M.; Schmidt, L. In ARBEIT(s).WISSEN.SCHAF(f)T - Grundlage für Management & Kompetenzentwicklung: 64. Kongress der Gesellschaft für Arbeitswissenschaft (Frankfurt am Main 2018), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.1.2). GfA-Press, Dortmund, 2018.
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Die vorliegende Studie untersucht, woran sich Menschen an komplexen Verkehrsknotenpunkten orientieren und welche Probleme hierbei auftreten. Dafür wurden die Blickbewegung gemessen und die Schritte gezählt, während die zwölf Teilnehmer drei Navigationsaufgaben durch den Frankfurter Flughafen absolvierten. Anschließend wurde die Retrospektive Think-Aloud-Methode genutzt, um einen Einblick in Gedanken und Strategien der Probanden zu bekommen. So konnten Problemstellen, wie z. B. die Suche auf Übersichtsplänen oder das Bestimmen der derzeitigen Etage, identifiziert werden, aus denen Gestaltungsempfehlungen für eine Fußgängernavigation mit Datenbrillen abgeleitet werden.
Übersicht zu Lernplattformen für die berufliche Weiterbildung.Funk, J.; Eis, A.; Schmidt, L. In ARBEIT(s).WISSEN.SCHAF(f)T - Grundlage für Management & Kompetenzentwicklung: 64. Kongress der Gesellschaft für Arbeitswissenschaft (Frankfurt am Main 2018), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (C.3.5). GfA-Press, Dortmund, 2018.
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Eine große Anzahl an verfügbaren Lernplattformen und eine stetige Veränderung des Markts durch neue Anbieter erschweren die Auswahl eines geeigneten Systems. Für eine Marktübersicht wurde eine Literatur- und Internetrecherche von verfügbaren Lernplattformen durchgeführt. Die Rechercheergebnisse wurden aussagefähigen Kategorien wie bspw. Administration, Didaktik, Kommunikation oder Technik zugeordnet. Durch die Unterteilung der Lernplattformen in Kategorien lassen sich die Rechercheergebnisse schnell anhand eigener Anforderungen filtern, um geeignete Plattformen für bestimmte Anforderungen zu identifizieren. Die Recherche ergab, dass sich einige Produktmerkmale, bspw. die mobile Zugänglichkeit von E-Learning-Material, als Basiseigenschaften etabliert haben, wohingegen VR-/AR-Technologien bisher nicht berücksichtigt werden.
Making IT Work: Integrating Gender Research in Computing Through a Process Model.Draude, Claude; Maaß, Susanne. In Proceedings of the 4th Conference on Gender & IT, of GenderIT ’18, pp. 43–50. ACM, Heilbronn, Germany, 2018.
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To become effective in the field of computing, gender research must explain its concepts to non-gender studies scholars and to convince them of their relevance. Our title "Making IT Work" claims that both can be done: interlinking gender research and computing, and by that improving IT systems. We present the "Gender-Extended Research and Development" (GERD) model, a process model which combines gender and diversity aspects with all phases of computing research and development. The model with seven phases is a generalization of common process models in computing. Gender/diversity expertise has been condensed into a number of aspects that characterize the social context of computing research. They can be related to and reflected during every phase. This reflection is somewhat operationalized by providing a list of questions for each combination of phase and aspect. Case studies as part of the model illustrate either in what way such reflections may help in research and development or what may happen if no such aspects have been included.
„Die Arena der Datenschutz-Grundverordnung – Auseinandersetzungen um die Zukunft des Europäischen Datenschutzes“, ITeG – Interdisciplinary Research on Information System Design. Büttner, Barbara; Geminn, Christian; Husemann, Charlotte; Miedzianowski, Nadine. Vol. 6. ITeG, 2018.
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Schwimmen oder Untergehen - Informationsüberflutung durch E-Mails im Arbeitsalltag.Friedrichs, Juliane; Ohly, Sandra; Duranova, Lenka. In Presentation at the 51. Kongress der Deutschen Gesellschaft für Psychologie (DGPs) in Frankfurt, p. 52. 2018.
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The New Frontiers of Service Systems Engineering.Böhmann, Tilo; Leimeister, Jan Marco; Möslein, Kathrin. In Business & Information Systems Engineering (BISE), 60(5), pp. 373–375. 2018.
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The What and How of Smart Personal Assistants: Principles and Application Domains for IS Research.Knote, Robin; Janson, Andreas; Eigenbrod, Laura; Söllner, Matthias. In Multikonferenz Wirtschaftsinformatik (MKWI). 2018.
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Digitization brings new possibilities to ease our daily life activities by the means of assistive technology. Amazon Alexa, Microsoft Cortana, Samsung Bixby, to name only a few, heralded the age of smart personal assistants (SPAs), personified agents that combine artificial intelligence, machine learning, natural language processing and various actuation mechanisms to sense and influence the environment. However, SPA research seems to be highly fragmented among different disciplines, such as computer science, human-computer-interaction and information systems, which leads to ‘reinventing the wheel approaches’ and thus impede progress and conceptual clarity. In this paper, we present an exhaustive, integrative literature review to build a solid basis for future research. We have identified five functional principles and three research domains which appear promising for future research, especially in the information systems field. Hence, we contribute by providing a consolidated, integrated view on prior research and lay the foundation for an SPA classification scheme.
The Influence of Fast Fading and Device Heterogeneity on Wi-Fi Fingerprinting.Duong, Doan; Xu, Yaqian; David, Klaus. In Proceedings of the 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), pp. 1–5. IEEE, Porto, Portugal, 2018.
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As Wi-Fi fingerprinting is a promising approach for indoor localization, one of the major challenges is understanding how fast fading and device heterogeneity problems influence the performance of the Wi-Fi fingerprinting systems. In this paper, we experimentally investigate the influence of fast fading and the device heterogeneity problems on the Wi-Fi RSS values, as well as on the performance (i.e., the recognition rate) of a Wi-Fi fingerprinting system WHERE. Besides, we also compare the performance of Wi-Fi fingerprinting in the experimental scenarios and in the real scenarios with the consideration of the fast fading problem. It concludes that both fast fading and device heterogeneity heavily influences the RSS values. However, the influence of fast fading on the performance of the Wi-Fi fingerprinting system can be mitigated when the Wi-Fi data is collected in the real scenarios.
Comparing the Performance of Wi-Fi Fingerprinting Using the 2.4 GHz and 5 GHz Signals.Duong, Doan; Xu, Yaqian; David, Klaus. In Proceedings of the 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), pp. 1–5. IEEE, Porto, Portugal, 2018.
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Wi-Fi fingerprinting is a promising technique for indoor localization. The use of both 2.4 GHz and 5 GHz for Wi-Fi fingerprinting has been preliminarily studied by some research groups. However, most of the previous studies only consider the reflection and multi-paths caused by walls around but do not consider the damping and scattering through walls between them. In this paper, we particularly consider the situation that the radio propagation covers several rooms divided by walls, and compare the localization performance of using 2.4 GHz and 5 GHz networks. Moreover, we also compare the power consumption of scanning the surrounding wireless channels used for 2.4 GHz and 5 GHz networks. The results show that the performance of accuracy of Wi-Fi fingerprinting is similar when using 2.4 GHz and 5 GHz respectively. However, the use of 5 GHz results in higher response rate, while the use of 2.4 GHz consumes less power.
Deception in Information Security: Legal Considerations in the Context of German and European Law.Duque Antón, S.; Fraunholz, D.; Lipps, D.; Müller, J.; Schotten, H. D.; Zimmermann, M. In The 10th International Symposium on Foundations & Practice of Security. International Symposium on Foundations & Practice of Security (FPS-17), A. Imine, J. M. Fernandez Jean-Yves Marion, L. Logrippo Joaquin Garcia-Alfaro (eds.), pp. 259–274. Nancy, France, 2018.
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Knowing what Learners Like – Developing a Cultural Sensitive Peer Assessment Process in MOOCs.Buholzer, Fabienne; Rietsche, Roman; Söllner, Matthias. In Multikonferenz Wirtschaftsinformatik (MKWI). 2018.
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MOOCs attract learners from various cultural backgrounds with differing educational beliefs and learning preferences. Research has long acknowledged that culture has an impact on the adoption and use of information technology. Cultural differences can cause conflicts, especially when learners provide each other with feedback during the peer assessment process. With this paper, we use a design science approach to create a cultural sensitive peer assessment process in MOOCs. Based on Hofstede’s cultural dimension theory we derive design elements and evaluate them in a qualitative and comparative study with Swiss and Chinese students. Our results show that different cultures prefer different designs. Consequently, our key contribution is the practical elaboration of design elements, which can be integrated in MOOCs to provide a better learning experience. Further, we contribute to cross-cultural theory by using an existing framework and adapting it to a new and relevant phenomenon: MOOCs.
Rechtsbehelfe und Haftung.Miedzianowski, Nadine. In Das neue Datenschutzrecht – Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetz, pp. 142–153. Nomos, Baden-Baden, 2018.
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Leveraging the Potentials of Dedicated Collaborative Interactive Learning: Conceptual Foundations to Overcome Uncertainty by Human-Machine Collaboration.Calma, Adrian; Oeste-Reiß, Sarah; Sick, Bernhard; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS), pp. 960–968. Waikoloa, HI, USA, 2018.
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Hijacked Smart Devices -- Methodical Foundations for Autonomous Theft Awareness based on Activity Recognition and Novelty Detection.Jänicke, Martin; Schmidt, Viktor; Sick, Bernhard; Tomforde, Sven; Lukowicz, Paul. In Proceedings of the 10th International Conference on Agents and Artificial Intelligence. 2018.
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„Wissenschaftliche Forschung und Datenschutz – Neuerungen durch die Datenschutz-Grundverordnung“.Geminn, Christian. In Datenschutz und Datensicherheit, (10). 2018.
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Integrating Your Ecosystem with the Hybrid Intelligence Accelerator.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp. In Social Science Research Network (SSRN). 2018.
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Managing the Dark Side of Software Ecosystems.Dellermann, Dominik; Jud, Christopher; Lipusch, Nikolaus; Popp, Karl Michael. In Social Science Research Network (SSRN). 2018.
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„The New Federal Data Protection Act – Implementation of the GDPR in Germany“. Geminn, Christian. Blog Droit Européen, 2018.
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Telemedien.Geminn, C.; Richter, P. In Das neue Datenschutzrecht – Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 362–373. Nomos Praxis, Baden-Baden, 2018.
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Design principles for a hybrid intelligence decision support system for business model validation.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In Electronic Markets, 29(3), pp. 423–441. 2018.
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One of the most critical tasks for startups is to validate their business model. Therefore, entrepreneurs try to collect information such as feedback from other actors to assess the validity of their assumptions and make decisions. However, previous work on decisional guidance for business model validation provides no solution for the highly uncertain and complex context of early-stage startups. The purpose of this paper is, thus, to develop design principles for a Hybrid Intelligence decision support system (HI-DSS) that combines the complementary capabilities of human and machine intelligence. We follow a design science research approach to design a prototype artifact and a set of design principles. Our study provides prescriptive knowledge for HI-DSS and contributes to previous work on decision support for business models, the applications of complementary strengths of humans and machines for making decisions, and support systems for extremely uncertain decision-making problems.
Making AI Ready for the Wild- the Hybrid Intelligence Unicorn Hunter.Dellermann, Dominik; Calma, Adrian. In Social Science Research Network (SSRN). 2018.
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Accelerating Decisional Guidance in Entrepreneurship with Hybrid Intelligence.Dellermann, Dominik. In International Conference on Information Systems (ICIS). 2018.
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Decision making in the context of entrepreneurship is a highly complex task. For dealing with such uncertain problems, decisional guidance proved to be a valuable approach to support entrepreneurs in making decisions. Mentoring and feedback from human experts and simple statistical methods emerge as dominant forms of providing decisional guidance. However, both individual human experts and existing decision support systems (DSS) have limited capabilities to provide optimal decisional guidance in such highly uncertain settings. While human experts have cognitive and resource constraints that prevent them from providing optimal guidance, computational DSS are frequently to deal with such complex problems. Consequently, the purpose of this dissertation is to provide prescriptive knowledge for novel forms of decisional guidance that support entrepreneurial decision makers by proposing collective intelligence and crowdsourcing (effective) as well as hybrid intelligence (effective and efficient) mechanism for efficient and effective decisional guidance. Following a design science research approach, I develop several artefacts such as system architectures and DSSs that are evaluated and provide innovative design knowledge for hybrid intelligence IS. The contribution of this dissertation is threefold. First, I provide an in-depth exploration of decisional guidance and its limitations in entrepreneurial decision making. Second, I propose collective intelligence and IT enabled crowdsourcing as a novel mechanism to guide entrepreneurs in creating their opportunities. Third, I conceptually develop hybrid intelligence as novel forms for making predictions under uncertainty. My research therefore provides prescriptive knowledge on the design of such hybrid intelligence architectures that are capable to predict uncertain outcomes. Finally, my results point towards a new class of DSS that might be particularly valuable in highly uncertain contexts.
30 Jahre provet e.V. und 20 Jahre provet an der Universität Kassel – Forschung und Methoden zur rechtsverträglichen Technikgestaltung und technikadäquaten Rechtsentwicklung.Geminn, C.; Johannes, P. C. In ZD-Aktuell, (18), p. 06346. 2018.
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„Laura Schulte, Vom quantitativen zum qualitativen Datenschutz. Leitbildwandel im Datenschutzrecht, Duncker & Humblot 2018“.Geminn, Christian. In Zeitschrift für Datenschutz, 9(8), L. Schulte (ed.). 2018.
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Coopetitive Soft Gating Ensemble.Deist, S.; Bieshaar, M.; Schreiber, J.; Gensler, A.; Sick, B. In Workshop on Self-Improving System Integration (SISSY). Trento, Italy, 2018.
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„Das Europäische Datenschutzrecht – Zwischen Leuchtturmfunktion und Werteexport?“.Geminn, Christian. In Verwaltungsblatt, Deutsches, (24). 2018.
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Secure Volunteer Computing for Distributed Cryptanalysis. Kopal, Nils. kassel university press GmbH, 2018.
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Volunteer computing offers researchers and developers the possibility to distribute their huge computational jobs to the computers of volunteers. So, most of the overall cost for computational power and maintenance is spread across the volunteers. This makes it possible to gain computing resources that otherwise only expensive grids, clusters, or supercomputers offer. Most volunteer computing solutions are based on a client-server model. The server manages the distribution of subjobs to the computers of volunteers, the clients, which in turn compute the subjobs and return the results to the server. The Berkeley Open Infrastructure for Network Computing (BOINC) is the most used middleware for volunteer computing. A drawback of any client-server architecture is the server being the single point of control and failure. To get rid of the single point of failure, we developed different distribution algorithms (epoch distribution algorithm, sliding-window distribution algorithm, and extended epoch distribution algorithm) based on unstructured peer-to-peer networks. These algorithms enable the researchers and developers to create volunteer computing networks without any central server. The thesis is structured into two different parts. The first is the distribution part and discusses the aforementioned new distribution algorithms and their usage for distributed cryptanalysis. The second part is the cheating part which extends our system with solutions for cheat detection in unstructured peer-to-peer networks. In this thesis, we focus on volunteer computing for distributed cryptanalysis. Since the computational effort to break many classical as well as most modern ciphers is very huge, hundreds to thousands of computers are often needed for executing successful attacks. We show in this thesis that our solutions are well-suited for attacking classical as well as modern ciphers. Some of our algorithms have been implemented for distributed cryptanalysis, e.g. brute-force and heuristics, to solve real-world ciphers. Additionally, we evaluated all of our distribution solutions with self-written simulators and with real-world tests over the Internet in CrypTool 2. By combining 50 off-the-shelf computers, we achieved a search speed of about 615 millions AES keys per second. A single of these computers, an Intel i5-3570 with 3.4 GHz and 4 CPU cores, is able to search at a rate between 12 and 13 millions AES keys per second. The distribution is self-organized by our algorithms. Additionally, we achieved a speedup for the cryptanalysis of the classical M-94 cipher of about 6.82, with respect to using only a single computer, enabling us to break original M-94 messages within 2 hours and 56 minutes with 6 standard computers. Cheating is a well-known threat in any volunteer computing project. Cheaters aim at computing less work as demanded by the creator of the project but they try to gain the same reward, i.e. credit points, as non-cheaters deserve. Cheated results are mostly incomplete or wrong, disturbing or even destroying the final result of the volunteer computing project. This can make weeks, months, and years of computational work useless. To fight cheaters, detection and prevention mechanisms are needed. A BOINC server assigns the same subjob to different clients and uses majority voting to determine the correctness of results. Since we base our volunteer computing and our distribution algorithms on unstructured peer-to-peer networks, where all peers are equal in role, majority voting is not possible. No central server is available to assign same subjobs to different peers. Thus, we developed new cheat detection mechanisms for decentralized peer-to-peer networks. We spread the detection of a cheated result over all peers of the network. Each peer has a small probability of detecting a cheated result but the network in sum reaches a high detection rate. In this thesis, we differentiate between two cheat detection approaches: static detection, with each peer performing the same amount of detection effort, and adaptive detection, with each peer dynamically adapting his additional cheat-detection effort to the growing and shrinking size of the peer-to-peer network. Both approaches work but the static does not scale while the adaptive scales well. We show that we can achieve detection rates above 99.8 % with both, the static cheat detection approach as well as the adaptive cheat detection approach. With the adaptive cheat detection approach the needed detection effort is constant throughout the network when increasing the amount of connected nodes.
6G Vision and Requirements: Is There Any Need for Beyond 5G?David, Klaus; Berndt, Hendrik. In IEEE Vehicular Technology Magazine, 13(3), pp. 72–80. 2018.
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To address the question in the subtitle of this article, we start by discussing earlier mobile communication systems, beginning with the first analog wireless cellular standards, then moving on to second generation (2G) [or Global System for Mobile Communications (GSM)], passing third generation (3G) and fourth generation (4G), and proceeding to fifth generation (5G). First, we present each generation's key achievements in terms of user services, each generation's technologyrelated factors of success (called innovations) as well as its relation to regulation, and each generation's potential deficiencies.
Entgrenzter Konsum und Konsequenzen für die Verbraucherforschung.Lamla, Jörn. In Entgrenzungen des Konsums. Dokumentation der Jahreskonferenz des Netzwerks Verbraucherforschung, P. Kenning, J. Lamla (eds.), pp. 147–153. Springer Gabler, Wiesbaden, 2018.
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Driving smart home innovation with the gender dimension.Dankwa, Nana Kesewaa. In Feminist Voices in Technology, 1(ISS001), pp. 9–10. 2018.
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Decentralized decision making in adaptive multi-robot teams.Geihs, Kurt; Witsch, Andreas. In it - Information Technology, 60(4), pp. 239–248. 2018.
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Heading for new shores: Crowdsourcing for entrepreneurial opportunity creation.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Phlipp. In European Conference of Information Systems (ECIS). 2018.
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Work and Consumption: A New Perspective for Economic Democracy.Lamla, Jörn. In Capitalism and Labor. Towards Critical Perspectives, K. Dörre, N. Mayer-Ahuja, D. Sauer, V. Wittke (eds.), pp. 318–334. Campus, Frankfurt/New York, 2018.
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Verbraucherschutz.Lamla, Jörn; Laser, Stefan. In Gesellschaftliche Verantwortung von Unternehmen in Deutschland, B.-M. H., K. M. S. (eds.), pp. 285–299. Springer, Wiesbaden, 2018.
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Combining Humans and Machine Learning: A Novel Approach for Evaluating Crowdsourcing Contributions in Idea Contests.Dellermann, Dominik; Lipusch, Nikolaus; Li, Mahei. In Multikonferenz Wirtschaftsinformatik (MKWI). 2018.
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The creative potential from innovative contributions of the crowd constitutes some critical challenges. The quantity of contributions and the resource demands to identify valuable ideas is high and remains challenging for firms that apply open innovation initiatives. To solve these problems, research on algorithmic approaches proved to be a valuable way by identifying metrics to distinguish between high and low-quality ideas. However, such filtering approaches always risk missing promising ideas by classifying good ideas as bad ones. In response, organizations have turned to the crowd to not just for generating ideas but also to evaluate them to filter high quality contributions. However, such crowd-based filtering approaches tend to perform poorly in practice as they make unrealistic demands on the crowd. We, therefore, conduct a design science research project to provide prescriptive knowledge on how to combine machine learning techniques with crowd evaluation to adaptively assign humans to ideas.
„Schutz anonymisierter Daten im japanischen Datenschutzrecht – Kommentierung der neu eingeführten Kategorie der ‚Anonymously Processed Information‘“.Geminn, Christian; Laubach, Anne; Fujiwara, Shizuo. In Zeitschrift für Datenschutz, (9). 2018.
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A Survey of Attention Management Systems in Ubiquitous Computing Environments.Anderson, Christoph; Hübener, Isabel; Seipp, Ann-Kathrin; Ohly, Sandra; David, Klaus; Pejovic, Veljko. In Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2(2), pp. 1–27. ACM, New York, NY, USA, 2018.
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Active Learning with Realistic Data -- A Case Study.Calma, Adrian; Stolz, Moritz; Kottke, Daniel; Tomforde, Sven; Sick, Bernhard. In International Joint Conference on Neural Networks. Rio de Janiero, Brazil, 2018.
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Elektroschrott und die Abwertung von Reparaturpraktiken: Eine soziologische Erkundung des Recyclings von Elektronikgeräten in Indien und Deutschland.Laser, Stefan. In Kulturen des Reparierens, S. Krebs, G. Schabacher, H. Weber (eds.), pp. 85–103. transcript, 2018.
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Gestaltungsempfehlungen für touchscreenbasierte Benutzungsschnittstellen. Domhardt, M. Kassel University Press, Kassel, 2018.
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Bisher erfolgt die Gestaltung von Touchscreensystemen nach Kriterien für ergonomische Eingabemittel oder der Softwareergonomie. Der allgemeine Charakter dieser Empfehlungen deckt nicht touchscreenspezifische Besonderheiten ab. Hersteller- und softwarespezifische Design Guides enthalten keine Hinweise zur Berücksichtigung der technologiebedingten Interaktionsmöglichkeiten und -einschränkungen der verschiedenen technischen Komponenten eines Touchscreensystems. Bisher existiert kein Gestaltungsansatz, der die touchscreenspezifischen Besonderheiten systematisch berücksichtigt. Die technologischen Möglichkeiten von Touchscreensystemen sowie die die Gefahr einer physischen Überbeanspruchung des belasteten Bewegungsapparates werden dadurch bei der Systemgestaltung nur unzureichend berücksichtigt. Im Rahmen dieser Arbeit wurde daher das Ziel verfolgt, einen ganzheitlichen Gestaltungsansatz zu erarbeiten, der die Besonderheiten der Touchscreentechnologien und -interaktion durch spezifische Gestaltungsempfehlungen berücksichtigt. Als Lösungsansatz wurde die Erweiterung bestehender Modelle um die Besonderheiten touchscreenbasierter Systeme verfolgt. Im ersten Schritt erfolgte die systematische Auswahl eines Modells eines interaktiven Systems als geeignetes Basismodell für Touchscreensysteme. Anschließend wurde dieses Modell um die charakteristischen Bestandteile eines Touchscreensystems erweitert. Anhand dieses Modells wurden Wissenslücken in den theoretischen Grundlagen identifiziert und daraus sechs Forschungsfragen abgeleitet. Um die Fragen systematisch zu beantworten, wurden Literaturanalysen und empirische Studien konzipiert, durchgeführt und ausgewertet. Die theoretischen Grundlagen wurden mit den erarbeiteten Ergebnissen der Analysen und empirischen Studien zusammengeführt und als Basis für die Formulierung touchscreenspezifischer Gestaltungsempfehlungen genutzt. Diese Empfehlungen wurden anschließend im Basismodell verankert, um so einen ganzheitlichen Gestaltungsansatz für Touchscreensysteme zu erhalten. Für die praktikable Anwendung des Ansatzes wurde dieser in den menschzentrierten Gestaltungsprozess integriert. Die Anwendbarkeit konnte anhand eines Praxisbeispiels erfolgreich demonstriert werden. Die Ergebnisse dieser Arbeit erleichtern die Gestaltung touchscreenbasierter Systeme im Rahmen des menschzentrierten Gestaltungsprozesses. Auch eine formative analytische Evaluierung entsprechender Systeme kann durch die erarbeiteten touchscreenspezifischen Gestaltungsempfehlungen vereinfacht werden, indem diese als Konformitätskriterien verwendet werden.
Ciphertext-Only Cryptanalysis of Short Hagelin M-209 Ciphertexts.Lasry, George; Kopal, Nils; Wacker, Arno. In Cryptologia. Taylor & Francis, 2018.
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The Hagelin M-209 was a mechanical encryption device used by the U.S. Army during World War 2 (WWII) and the Korean War, as well as by other armies and diplomatic services. The Hagelin M-209 has been the focus of extensive research by codebreaking agencies. Several ciphertext-only attacks have been published, but, those attacks are applicable only to the case of long cryptograms. In this article, the authors present a nested hill-climbing and simulated annealing algorithm for recovering the full key settings from ciphertext only, with ciphertexts as short as 500 letters, compared to a minimum of 750 to 1,250 letters with prior methods. With this method, the authors have solved the last problem of a public Hagelin M-209 challenge contest.
How Digital Nudges Influence Consumers – The Role of Social and Privacy Nudges in Retargeting.Eigenbrod, Laura; Janson, Andreas; Leimeister, Jan Marco. In Academy of Management Annual Meeting (AOM). 2018.
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Retargeting is an innovative online marketing technique because it can provide consumer-specific advertising content based on consumers’ browsing behavior that meet consumers' prefer-ences and interests. Although this advertising form offers great opportunities of bringing back customers who have left an online store without to complete a purchase, retargeting is risky be-cause the necessary data collection leads to strong privacy concerns which in turn, trigger con-sumer reactance and decreasing trust. Digital nudges – small design modifications in digital choice environments which guide peoples’ behavior – present a promising concept to bypass these negative consequences of retargeting. In order to explore the positive effects of digital nudges in retargeting banners, we conducted a between-subject experiment with a subsequent survey which examines the impacts of social nudges (likes of friends) and privacy nudges (disclosure of privacy policy and purpose of retargeting banners). Whereas the social nudge led to a negative impact on consumers’ privacy concerns and a positive impact on consumers’ booking behavior, the privacy nudge did not have any significant impact. A combination of social nudge and privacy nudge showed that the privacy nudge negatively moderated the positive relationship between social nudge and consumers’ booking behavior. The derived implications provide a theory for under-standing nudges in digital environments and we offer design principles for practitioners that enable better retargeting outcomes.
Bewertungsformen und ihre Strukturdynamiken in sozialen Feldern: Eine Neubetrachtung der Feldtheorie im Hinblick auf die Rolle von Konsekrationsinstanzen.Kropf, Jonathan. In Die Produktivität von Musikkulturen, D. Mathei, H. Neubauer, H. Schwetter (eds.), pp. 185–206. Springer, Wiesbaden, 2018.
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Übersetzung, Ungleichzeitigkeit und Konflikt.Kropf, Jonathan. In Österreichische Zeitschrift für Soziologie, 43, pp. 157–178. 2018.
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Für eine reflexive Vergleichspraxis in der Bewertungssoziologie. Pinterest und WhatsApp als Beispiel.Kropf, Jonathan; Laser, Stefan. In Digitale Bewertungspraktiken. Für eine Bewertungssoziologie des Digitalen, J. Kropf, S. Laser (eds.), pp. 19–40. Springer, Wiesbaden, 2018.
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Proceedings of the Workshop on Interactive Adaptive Learning co-located with European Conference on Machine Learning (ECML 2018) and Principles and Practice of Knowledge Discovery in Databases (PKDD 2018), Dublin, Ireland, September 10th, 2018. Krempl, Georg; Lemaire, Vincent; Kottke, Daniel; Calma, Adrian; Holzinger, Andreas; Polikar, Robi; Sick, Bernhard. In Vol. 2192 of CEUR Workshop Proceedings. CEUR-WS.org, 2018.
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Gestaltungsraum für proactive Smart Homes zur Gesundheitsförderung.Kromat, Theresa; Dehling, Tobias; Haux, Reinhold; Peters, Christoph; Sick, Bernhard; Tomforde, Sven; Wolf, Klaus-Hendrik; Sunyaev, Ali. In Multikonferenz Wirtschaftsinformatik. Lüneburg, Germany, 2018.
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Digitale Bewertungspraktiken. Für eine Bewertungssoziologie des Digitalen.Kropf, Jonathan; Laser, Stefan. VS, Wiesbaden, 2018.
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Gestaltungsraum für proaktive Smart Homes zur Gesundheitsförderung.Kromat, Theresa; Dehling, Tobias; Haux, Reinhold; Peters, Christoph; Sick, Bernhard; Tomforde, Sven; Wolf, Klaus-Hendrik; Sunyaev, Ali. In Multikonferenz Wirtschaftsinformatik (MKWI). 2018.
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Smart Homes sammeln eine Fülle von Daten über ihre Bewohner. Gut genutzt werden diese allerdings nicht. Smart Homes sind im wesentlichen reaktiv. Im Hinblick auf die Gesundheitsversorgung ist der Wandel zu proaktiven Smart Homes vielversprechend. Um proaktive Smart Homes Wirklichkeit werden zu lassen, sollte zunächst ein vollständiges Bild dieser komplexen und ressourcenreichen Umgebung gezeichnet werden. Das Ziel dieser Arbeit ist es, einen Gestaltungsraum für proaktive Smart Homes aufzuspannen. Ausgehend von den neun Elementen des Work System (WS) Rahmenwerks, werden Bausteine eines proaktiven Smart Homes identifiziert, beschrieben und analysiert sowie Gestaltungsfragen daraus abgeleitet, die bei einer Instanziierung eines proaktiven Smart Homes beantwortet werden müssen. Diese Arbeit bereitet einen fruchtbaren Nährboden für die zukünftige Gestaltung IT-gestützter proaktiver Lebenswelten, in denen die Gesundheit durch den Einsatz verschiedenster Systemressourcen proaktiv gefördert wird.
Understanding Job Satisfaction of Crowd Workers: An Empirical Analysis of Its Determinants and Effects.Durward, David; Blohm, Ivo. In Multikonferenz Wirtschaftsinformatik (MKWI). Lüneburg, Germany, 2018.
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Crowd work has emerged as new pattern of digitally mediated collaboration. In this paper, we focus on the determinants and effects of crowd workers’ job satisfaction – a perspective that has been largely neglected by current crowdsourcing research. We report results from a survey of 161 crowd workers participating in crowdsourced software testing. Our research shows that job satisfaction mediates the effects of monetary rewards, hedonic value, and cognitive stimulation on the intention to participate in future testing tasks. By contrast, factors of work context (i.e., flexibility and provided information) have no effects. We contribute to the literature by unraveling job satisfaction as causal mechanism influencing future participation. For practice, our results help to design more effective tasks in crowd work.
Self-Adaptive Multi-Sensor Activity Recognition Systems Based on Gaussian Mixture Models.Jänicke, Martin; Sick, Bernhard; Tomforde, Sven. In Informatics, 5(3), p. 38. 2018.
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How Digital Nudges Influence Consumers - Experimental Investigation in the Context of Retargeting.Eigenbrod, Laura; Janson, Andreas. In European Conference on Information Systems (ECIS). 2018.
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Retargeting is an innovative online marketing technique in the modern age. Although this advertising form offers great opportunities of bringing back customers who have left an online store without a com-plete purchase, retargeting is risky because the necessary data collection leads to strong privacy con-cerns which, in turn, trigger consumer reactance and decreasing trust. Digital nudges – small design modifications in digital choice environments which guide peoples’ behaviour – present a promising concept to bypass these negative consequences of retargeting. In order to prove the positive effects of digital nudges, we aim to conduct an online experiment with a subsequent survey by testing the impacts of social nudges and information nudges in retargeting banners. Our expected contribution to theory includes an extension of existing research of nudging in context of retargeting by investigating the effects of different nudges in retargeting banners on consumers’ behaviour. In addition, we aim to provide practical contributions by the provision of design guidelines for practitioners to build more trustworthy IT artefacts and enhance retargeting strategy of marketing practitioners.
Human Pose Estimation in Real Traffic Scenes.Kress, V.; Jung, J.; Zernetsch, S.; Doll, K.; Sick, B. In 2018 IEEE Symposium Series on Computational Intelligence (SSCI). Bangalore, India, 2018.
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Smart Device Stealing and CANDIES.Jänicke, Martin; Schmidt, Viktor; Sick, Bernhard; Tomforde, Sven; Lukowicz, Paul; Schmeißing, Jörn. In Agents and Artificial Intelligence - 10th International Conference, ICAART 2018, Funchal, Madeira, Portugal, January 16-18, 2018, Revised Selected Papers, pp. 247–273. 2018.
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USA: Microsoft erhält breite Unterstützung vor dem US-Supreme Court zur Sicherung des freien Datenverkehrs.Goeble, Thilo; Scheuble, Anne. In ZD-Aktuell, p. 06009. 2018.
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Mobiles Lernen in praktischen Trainings - Lernzielerreichung vor dem Hintergrund von Motivation und Akzeptanz der Zielgruppe.Ernst, Sissy-Josefina; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. Springer VS, Wiesbaden, Germany, 2018.
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Lehr-Lernkontexte werden zunehmend durch den allgegenwärtigen Einsatz mobiler Endgeräte geprägt. Durch mobiles Lernen besteht die Möglichkeit, auch bei einer hohen Anzahl an Lernenden, die Wissensaneignung in praktischen Trainings zu unterstützen. Für die Gestaltung von mobilen Lehr-Lernszenarien ist die explizite Berücksichtigung des Lehr-Lernkontextes, den entsprechenden Lernzielen sowie des Lernenden selbst von grundlegender Bedeutung. Lernziele können unter Zuhilfenahme der Lernzieltaxonomie hinsichtlich Komplexität und Schwierigkeit eingeordnet und in Bezug zum Lehr-Lernkontext gesetzt werden. Darüber hinaus ist der Lernende selbst eine wichtige Determinante, welche es bei der Ausgestaltung mobiler Lernanwendungen zu berücksichtigen gilt. In diesem Zusammenhang sind sowohl Faktoren der Technologieakzeptanz als auch die Motivation zur Nutzung einer mobilen Lernanwendung zu nennen, welche den Erfolg von mobilen Lernanwendungen maßgeblich beeinflussen können. Aufbauend auf einem theoretischen Grundgerüst wird im Beitrag die Umsetzung von Lernzielen im mobilen Lernen aufgezeigt sowie Akzeptanz und Motivationskomponenten von mobilem Lernen vor dem Hintergrund bestehender Literatur erläutert. Anhand eines Praxisbeispiels wird aufgezeigt, wie mobile Lehr-Lernszenarien und entsprechende mobile Lernanwendungen vor dem Hintergrund des Lehr-Lernkontextes, der Motivation und der Akzeptanz gestaltet werden können. Speziell wird darauf eingegangen, wie durch eine zielgruppen- und kontextspezifische Entwicklung die Akzeptanz des mobilen Lernens gesteigert wird.
Kontroversen bewertbar machen. Über die Methode des „Mapping of Controversies“.Laser, Stefan; Ochs, Carsten. In Digitale Bewertungspraktiken. Für eine Bewertungssoziologie des Digitalen, J. Kropf, S. Laser (eds.), pp. 97–125. Springer, Wiesbaden, 2018.
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A Methodology for the Cryptanalysis of Classical Ciphers with Search Metaheuristics, Kassel University Press. Lasry, George. kassel university press, 2018.
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Cryptography, the art and science of creating secret codes, and cryptanalysis, the art and science of breaking secret codes, underwent a similar and parallel course during history. Both fields evolved from manual encryption methods and manual codebreaking techniques, to cipher machines and codebreaking machines in the first half of the 20th century, and finally to computerbased encryption and cryptanalysis from the second half of the 20th century. However, despite the advent of modern computing technology, some of the more challenging classical cipher systems and machines have not yet been successfully cryptanalyzed. For others, cryptanalytic methods exist, but only for special and advantageous cases, such as when large amounts of ciphertext are available. Starting from the 1990s, local search metaheuristics such as hill climbing, genetic algorithms, and simulated annealing have been employed, and in some cases, successfully, for the cryptanalysis of several classical ciphers. In most cases, however, results were mixed, and the application of such methods rather limited in their scope and performance. In this work, a robust framework and methodology for the cryptanalysis of classical ciphers using local search metaheuristics, mainly hill climbing and simulated annealing, is described. In an extensive set of case studies conducted as part of this research, this new methodology has been validated and demonstrated as highly effective for the cryptanalysis of several challenging cipher systems and machines, which could not be effectively cryptanalyzed before, and with drastic improvements compared to previously published methods. This work also led to the decipherment of original encrypted messages from WWI, and to the solution, for the first time, of several public cryptographic challenges.
Recommender Systems in der populären Musik. Kritik und Gestaltungsoptionen.Kropf, Jonathan. In Für eine Bewertungssoziologie des Digitalen, J. Kropf, S. Laser (eds.). Springer, Wiesbaden, 2018.
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HUMAN+: Deutsch-österreichisches Forschungsprojekt.Gilga, Carolin; Schindler, Stephan. In ZD-Aktuell, p. 06255. 2018.
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New Ways to Consider: Towards a Design Theory for Hybrid Intelligence Accelerators.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In The Baugh-Ratio Colloquium for Young Social Scientists. Stockholm, Sweden, 2017.
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Grundrechtecharta und Grundgesetz.Johannes, Paul C. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 78–86. Nomos, Baden-Baden, 2017.
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Improving Smartphone Based Collision Avoidance by Using Pedestrian Context Information.Bachmann, M.; Morold, M.; David, K. In Proceedings of the 2017 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom {Workshops}), pp. 2–5. IEEE, Kona, HI, USA, 2017.
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Pedestrians globally comprise 22 % of all road traffic deaths in 2013. Various approaches for reducing accident numbers have already been introduced and are still being researched. Most of these approaches have specific limitations, like requiring line of sight. To overcome these limitations, we propose the Wireless Seat Belt (WSB), a smartphone-based collision avoidance system for pedestrians. Unlike other systems, the WSB uses context information, obtained from a pedestrian's smartphone, not only as additional information but also for using the information to improve the collision detection accuracy. The WSB introduces independent, individual modules for recognizing the pedestrian's direction, position, and speed. We first evaluate the influence of the measurement errors of each module on the missed alarm probability in a typical urban collision scenario using a simulator. Then, the impact of using the pedestrian's context to decrease the missed alarm probability is evaluated. The evaluation is done using the example of a curb detection module. The curb detection is used to infer that the pedestrian has stepped onto the street to correct the pedestrian's position. The results show a decrease of the missed alarm probability by 46.5 % in the scenario considered.
Building Your IoT Ecosystem: Proposing the Hybrid Intelligence Accelerator.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In Proceedings of the European Workshop on Software Ecosystems 2017, P. Buxmann, A. T. Curan, G. Eichler, S. Jansen, T. Kude, K. M. Popp (eds.). Books on Demand, Darmstadt, Germany, 2017.
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Self-aware Computing Systems: Open Challenges and Future Research Directions.Birke, Robert; Cámara, Javier; Chen, Lydia Y; Esterle, Lukas; Geihs, Kurt; Gelenbe, Erol; Giese, Holger; Robertsson, Anders; Zhu, Xiaoyun. In Self-Aware Computing Systems, pp. 709–722. Springer, 2017.
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Gestaltung und Evaluation einer natürlichen Flugrobotersteuerung.Herrmann, R.; Schmidt, L. In Mensch und Computer 2017 - Tagungsband (Regensburg 2017), M. Burghardt, R. Wimmer, C. Wolff, C. Womser-Hacker (eds.), pp. 147–158. Gesellschaft für Informatik e. V, Bonn, 2017.
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In diesem Beitrag wird ein neues Bedien- und Anzeigekonzept für die Steuerung eines Flugroboters vorgestellt, welches die Microsoft HoloLens-Datenbrille und das Thalmic Myo-Armband verwendet. Mit diesen wurde eine Augmented-Reality-Text- und Audioausgabe, eine vibrotaktile Rückmeldung sowie eine Sprach- und Gesteneingabe implementiert. Das neue multimodale Interaktionskonzept wurde schließlich in einer Nutzerstudie mit 30 Probanden evaluiert und in diesem Kontext mit einer traditionellen Remote Control verglichen.
Customer Feedback for Startups – A Process Model and Research Agenda.Lipusch, Nikolaus; Ebel, Philipp; Dellermann, Dominik; Bretschneider, Ulrich. In ISPIM Innovation Conference. Vienna, Austria, 2017.
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Design Principles for Hybrid Intelligence Decision Support Systems in Entrepreneurship.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In Electronic Markets Paper Development Workshop. Karlsruhe, Germany, 2017.
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„ヨーロッパデータ保護一般規則 : EUにおける新たなデータ保護の規律の客観的考察“ (dt.: Die Europäische Datenschutz-Grundverordnung – Eine kritische Betrachtung der neuen Datenschutzregeln in der Europäischen Union).Geminn, C. In 自治研究 (Jichi kenkyū, Forschung zur Selbstverwaltung), (3), pp. 3–23. 2017.
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Achieving scalability of human-centered service systems: Insights from the active and assisted living context.Kleinschmidt, Stefan; Peters, Christoph; Leimeister, Jan Marco. In International Research Symposium on Advancing Service Research and Practice (QUIS). Porto, Portugal, 2017.
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Explanation-Aware Feature Selection using Symbolic Time Series Abstraction: Approaches and Experiences in a Petro-Chemical Production Context.Atzmueller, Martin; Hayat, Naveed; Schmidt, Andreas; Klöpper, Benjamin. In Proc. IEEE International Conference on Industrial Informatics (INDIN). IEEE Press, Boston, MA, USA, 2017.
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Towards ICT-Enabled Service Business: A Design Theory for Human-Centered Service Systems.Kleinschmidt, Stefan; Peters, Christoph; Leimeister, Jan Marco. In 2. Jahrestagung der Wissenschaftlichen Kommission Dienstleistungsmanagement (WK DLM) des Verbands der Hochschullehrer für Betriebswirtschaft e.V. Leipzig, Germany, 2017.
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Mobiles Lernen für China – eine iterative Prototypenentwicklung.Ernst, Sissy-Josefina; Janson, Andreas; Söllner, Matthias. In Wirtschaftsinformatik Konferenz (WI) 2017. St. Gallen, Switzerland, 2017.
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Mobiles Lernen ermöglicht eine Integration von authentischen Lernszenarien in den Alltag und unterstützt somit den Aufbau von Problemlösungskompetenzen. Da zielgruppenspezifische Unterschiede die Nutzung von IT beeinflussen und sich Lehrkonzepte unterscheiden, muss die Zielgruppe bei der Entwicklung einer mobilen Lernanwendung (MLA) berücksichtigt werden. Dieser Beitrag zeigt eine iterative Prototypenentwicklung am Beispiel einer MLA für den Einsatz in chinesischen Berufsschulen. Auf Basis der ITKulturkonflikttheorie wird ein systematischer Gestaltungs- und Evaluationsprozess dargestellt. Die Ergebnisse zeigen, dass die systematische Zielgruppenanpassung den Erfolg einer MLA signifikant steigert.
Archivierung.Johannes, Paul C. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 254–263. Nomos, Baden-Baden, 2017.
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Finding the Unicorn: Predicting Early Stage Startup Success through a Hybrid Intelligence Method.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Popp, Karl Michael; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Seoul, South Korea, 2017.
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Understanding IT-Culture Conflicts to Drive Successful Technochange Projects – a Case Study.Ernst, Sissy-Josefina; Janson, Andreas; Peters, Christoph; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Seoul, South Korea, 2017.
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Towards an integrated evaluation of human-centered service systems and corresponding business models: A systems theory perspective.Kleinschmidt, Stefan; Peters, Christoph. In European Conference on Information Systems (ECIS). Guimarães, Portugal, 2017.
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Datenschutz-Folgenabschätzung und Dokumentation.Marschall, Kevin. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 155–164. Nomos, Baden-Baden, 2017.
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Unsicheres Fahrwasser? - DSGVO: Praxistipps für Start-ups.Marschall, Kevin; Blazy, Stephan. In Datenschutz PRAXIS, (5), pp. 8–11. 2017.
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Datenschutz-Grundverordnung.Barlag, Charlotte; Büttner, Barbara; Geminn, Christian; Miedzianowski, Nadine. In Privacy-Arena. Kontroversen um Privatheit im digitalen Zeitalter, J. Baumann, J. Lamla (eds.). Kassel University Press, Kassel, 2017.
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Digitizing Knowledge Intensive Service Systems: The CrowdServ Project.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp; Leimeister, Jan Marco. In AIS SIG Services Pre-ICIS Workshop. Seoul, South Korea, 2017.
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Entrepreneurship at the Interface: How Crowdsourcing Can Support Opportunity Creation.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp. In Academy of Management Annual Meeting (AOM). Atlanta, Georgia, USA, 2017.
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Crowd-based Incubation: A new Pathway to Support Entrepreneurship.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp. In ISPIM Innovation Conference. Vienna, Austria, 2017.
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Can we Reproduce it? Toward the Implementation of good Experimental Methodology in Interdisciplinary Robotics Research.Lier, Florian; Lücking, Phillip; de Leeuw, Joshua; Wachsmuth, Sven; Šabanović, Selma; Goldstone, Robert. In ICRA 2017 Workshop on Reproducible Research in Robotics: Current Status and Road Ahead, F. P. Bonsignorio (ed.). IEEE, 2017.
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The insufficient level of reproducibility of pub-lished experimental results has been identified as acore issuein the field of robotics in recent years. Why is that? First ofall, robotics focuses on the abstract concept of computationand thecreationof technological artifacts, i.e., software thatimplements these concepts. Hence, before actually reproducingan experiment, the subject of investigation must beartificiallycreated, which is non-trivial given the inherent complexity [5].Second, robotics experiments usually include expensive andoften customized hardware setups (robots), that are difficultto operate for non-experts. Finally, there is no agreed uponset of methods in order to setup, execute, or (re-)conduct anexperiment.To this end, we introduce an interdisciplinary and geograph-ically distributed collaboration project that aims at implement-ing good experimental methodology in interdisciplinary roboticsresearch with respect to: a) reproducibility of required technicalartifacts, b) explicit and comprehensible experiment design, c)repeatable/reproducible experiment execution, and d) repro-ducible evaluation of obtained experiment data. The ultimategoal of this collaboration is to reproduce thesameexperiment intwo different laboratories using the same systematic approachwhich is presented in this work.
Developing Design Principles for a Service System for Crowd-Based Business Model Validation.Dellermann, Dominik; Lipusch, Nikolaus; Ebel, Philipp. In Design Science Research in Information Systems and Technology (DESRIST). Karlsruhe, Germany, 2017.
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Crowdfunding zur Gründungsfinanzierung von Start-ups aus dem universitären Bereich.Lipusch, Nikolaus; Bretschneider, Ulrich; Leimeister, Jan Marco. In Crowd Entrepreneurship: Das Gründungsgeschehen im Wandel, pp. 189–215. Springer Gabler, 2017.
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Zivile Sicherheit als Gegenstand und Ziel der Informations- und Kommunikationsverarbeitung.Hornung, Gerrit; Schindler, Stephan. In Rechtshandbuch Zivile Sicherheit, C. Gusy, D. Kugelmann, T. Würtenberger (eds.), pp. 247–271. Springer, Berlin, 2017.
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Anforderungen des künftigen europäischen Datenschutzrechts an die vertrauenswürdige Verteilung von Verschlüsselungsschlüsseln.Blazy, Stephan; Gonscherowski, Susan; Selzer, Annika. In INFORMATIK 2017, M. Eibl, M. Gaedke (eds.), pp. 751–762. Bonn, 2017.
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Das biometrische Auge der Polizei. Rechtsfragen des Einsatzes von Videoüberwachung mit biometrischer Gesichtserkennung.Hornung, Gerrit; Schindler, Stephan. In Zeitschrift für Datenschutz, pp. 203–209. 2017.
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Die vertrauenswürdige Verteilung von Verschlüsselungsschlüsseln als Hemmschuh der E-Mail-Verschlüsselung – ein Lösungsansatz.Blazy, Stephan; Gonscherowski, Susan; Kunz, T.; Selzer, Annika; Waldmann, U. In BvD-News, (3), pp. 72–75. 2017.
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Wissenschaft und Forschung.Johannes, Paul C. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 233–244. Nomos, Baden-Baden, 2017.
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E-Privacy-Verordnung: Wie geht es weiter?Blazy, Stephan. 2017.
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Using crowdfunding for start-up evaluation: How task representation influences prediction accuracy of the crowd.Lipusch, Nikolaus; Dellermann, Dominik; Ebel, Philipp. In European Conference on Information Systems (ECIS). Guimarães, Portugal, 2017.
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HypGraphs: An Approach for Analysis and Assessment of Graph-Based and Sequential Hypotheses.Atzmueller, Martin; Schmidt, Andreas; Kloepper, Benjamin; Arnu, David. In New Frontiers in Mining Complex Patterns. Postproceedings NFMCP 2016, Vol. 10312 of LNAI. Springer Verlag, Berlin/Heidelberg, Germany, 2017.
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Chancen und Risiken des Einsatzes digitaler Bildforensik. Aufdeckung und Beweisbarkeit von Versicherungsbetrug aus rechtlicher, technischer und psychologischer Sicht.Herfurth, Constantin. In Multimedia und Recht, pp. 152–157. 2017.
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Buchbesprechung: Peter Schantz / Heinrich Amadeus Wolff, Das neue Datenschutzrecht. Datenschutz-Grundverordnung und Bundesdatenschutzgesetz in der Praxis.Herfurth, Constantin. In ZD-Aktuell, (04268). 2017.
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Verfassungsbeschwerde gegen Straftatbestand der Datenhehlerei (§ 202d StGB).Herfurth, Constantin. In ZD-Aktuell, (05490). 2017.
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Towards Developing a Service Innovation Canvas.Lipusch, Nikolaus; Dellermann, Dominik; Kleinschmidt, Stefan; Ebel, Philipp; Leimeister, Jan Marco. In Pre-ICIS Workshop on Service Science: Towards Digital Service Innovation. Seoul, South Korea, 2017.
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Nudging in der DS-GVO und die Wirkung von Privacy by Default.Herfurth, Constantin; Benner-Tischler, Anja. In ZD-Aktuell, 21(05901). 2017.
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Codes of Conduct im Konzern? Verhaltensregeln von Unternehmensgruppen nach Art. 40 DS-GVO.Herfurth, Constantin; Engel, Friederike. In Zeitschrift für Datenschutz, pp. 367–372. 2017.
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Die Auswirkungen der europäischen Datenschutzreform auf die Markt- und Meinungsforschung.Hornung, Gerrit; Hofmann, Kai. In Zeitschrift für Datenschutz, 4, pp. 1–16. 2017.
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Mixed-Initiative Feature Engineering Using Knowledge Graphs.Atzmueller, Martin; Sternberg, Eric. In Proc. 9th International Conference on Knowledge Capture (K-CAP). ACM Press, New York, NY, USA, 2017.
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Minimizing Complementors’ Risk in Third-Party Innovation: A Qualitative Comparative Analysis (QCA) of Digital Platform Configurations.Dellermann, Dominik; Reck, Fabian. In Hawaii International Conference on System Sciences (HICSS). Waikoloa, HI, USA., 2017.
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Rechtsfragen der Industrie 4.0: Rahmenbedingungen, Herausforderungen und Lösungsansätze.Hornung, Gerrit; Hofmann, Kai. In Handbuch Industrie 4.0. Geschäftsmodelle, Prozesse, Technik, pp. 191–212. Carl Hanser Verlag GmbH & Co. KG, München, 2017.
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Datensparsamkeit oder Datenreichtum? – Zur neuen politischen Diskussion über den datenschutzrechtlichen Grundsatz der Datensparsamkeit, Policy Paper, Schriftenreihe Forum Privatheit und selbstbestimmtes Leben in der digitalen Welt. Geminn, C.; Fhom, H. S.; Friedewald, M.; Heesen, J.; Hess, T.; Kreutzer, M.; Neubaum, G.; Ochs, C. Fraunhofer ISI, Karlsruhe, 2017.
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Kapitel 9.4: Entscheidungsunterstützung mit Künstlicher Intelligenz. Wirtschaftliche Bedeutung, gesellschaftliche Herausforderungen, menschliche Verantwortung.Herfurth, Constantin; Wagner, Bernd. In Sicht des Datenschutzrechts, pp. 132–138. Berlin, 2017.
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k-rAC – a Fine-Grained k-Resilient Access Control Scheme for Distributed Hash Tables.Kieselmann, Olga; Wacker, Arno; Schiele, Gregor. In Proceedings of the 12th International Conference on Availability, Reliability and Security, ARES ’17, Reggio Calabria, Italy, pp. 43:1–43:10. ACM, New York, NY, USA, 2017.
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Distributed Hash Tables (DHT) are a common architecture for decentralized data management. However, currently existing DHTs allow every participant to access any index. To build secure applications, we need to control this access. In this paper, we present k-rAC, a fine-grained access control for DHTs. It allows to specify and enforce different access rights for each individual data item in the presence of attackers and up to $$k$$ subverted participants. Our approach can be tailored towards different thread levels and usage scenarios by adapting k and by choosing one of three authentication mechanisms that we provide.
Design Prinzipien für Microlearning Crowdsourcing-Systeme - Konzept für audiovisuelle Mediengestaltung.Kogga, Damian; Krawietz, Nicole; Cevik, Fatih; Brandau, Sven; Li, Mahei Manhai. In 13th International Conference on Wirtschaftsinformatik (WI), J. M. Leimeister, W. Brenner (eds.). St. Gallen, Switzerland, 2017.
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Datenschutz-Grundverordnung – Die Auseinandersetzungen um die Zukunft des Europäischen Datenschutzes.Barlag, C.; Büttner, B.; Geminn, C.; Miedzianowski, N. In Privacy-Arena – Kontroversen um Privatheit im digitalen Zeitalter, J. Lamla, J. Baumann (eds.), pp. 114–189. Kassel University Press, 2017.
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The Notion of Self-aware Computing.Kounev, Samuel; Lewis, Peter; Bellman, Kirstie L; Bencomo, Nelly; Camara, Javier; Diaconescu, Ada; Esterle, Lukas; Geihs, Kurt; Giese, Holger; Götz, Sebastian; others. In Self-Aware Computing Systems, pp. 3–16. Springer, 2017.
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Computing Bodies : Gender Codes and Anthropomorphic Design at the Human-Computer Interface. Draude, Claude. Springer Fachmedien Wiesbaden Imprint : Springer VS, Wiesbaden, 2017.
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Claude Draude analyzes embodied software agents - interface solutions that are designed to talk back and give emotional feedback - from a gender and media studies perspective. She addresses technological and sociocultural concepts in their interplay of shifting the boundary between what is considered as human and what as machine. The author discusses the technological realization of specific personality models that define the design of embodied software agents - emotion and gaze models, in particular. Finally, she explores these models in their broader cultural context by relating them to the prominent topic of the Turing test and the notion of the Uncanny Valley. Contents The Human-Computer Interface Semiotic Mirrors: The Interface as a Place of Sign/Signal Mediating Embodiment: The Role of the Body, Gaze Behavior and Emotions Counting as Machine, Counting as Human Target Groups Researchers and students in the fields of media studies, computer science, cultural studies, gender studies, sociology The Author Prof. Dr. Claude Draude is head of the department for Gender/Diversity in Informatics Systems (GeDIS) at the Faculty of Electrical Engineering/Computing at the University of Kassel, Germany.
Is There a Right to Offline-Alternatives in a Digital World?Karaboga, Murat; Matzner, Tobias; Obersteller, Hannah; Ochs, Carsten. In Protection and Privacy: (In)visibilities and Infrastructures, R. Leenes, R. van Brakel, S. Gutwirth, P. De Hert (eds.), pp. 31–57. Springer, Cham/Switzerland, 2017.
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I am a Crowd Worker - How Individuals Identify with a New Form of Digital Work.Durward, David; Blohm, Ivo. In European Conference on Information Systems (ECIS). Guimarães, Portugal, 2017.
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Das Tauziehen um die Ausgestaltung der ePrivacy-Verordnung.Lurtz, Helmut. In ZD-Aktuell, (05707). 2017.
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Unterschiede in der Datenschutz-Folgenabschätzung für Polizei und Strafverfolgungsbehörden nach europäischem und deutschem Recht.Johannes, P. C. In ZD-Aktuell, (19), p. 05852. 2017.
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Management sicherer Cloud-Services - Entwicklung und Evaluation dynamischer Zertifikate. Krcmar, Helmut; Eckert, Claudia; Roßnagel, Alexander; Sunyaev, Ali; Wiesche, Manuel. Springer, 2017.
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Challenges for Big and Smart Data in Process Industries.Folmer, Jens; Kirchen, Iris; Trunzer, Emanuel; Vogel-Heuser, Birgit; Pötter, Thorsten; Graube, Markus; Heinze, Sebastian; Urbas, Leon; Atzmueller, Martin; Arnu, David. In atp edition, 01-02. 2017.
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The Rise of Crowd Aggregators - How Individual Workers Restructure Their Own Crowd.Durward, David; Blohm, Ivo. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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DORIAN: Forschungsprojekt wird Desinformation im Internet aufdecken und bekämpfen.Löber, L. I. In ZD-Aktuell, (17), p. 05795. 2017.
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DREI: Forschungsprojekt zur datenschutzkonformen Erkennung von Innentätern durch Softwaresysteme.Benner-Tischler, Anja. In ZD-Aktuell, (05556). 2017.
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The Impact of Procedural Scaffolding on Mobile Learning Outcomes.Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Academy of Management Annual Meeting (AOM). Atlanta, Georgia, USA, 2017.
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Mobile learning, offering anytime and anywhere learning, is becoming increasingly important in various areas such as the training of blue-collar workers in organizations. However, mobile learning may overwhelm the learner since it is often used in rich physical environments and demands a high self-regulated learning ability. Therefore, research suggests the use of procedural scaffolds to guide the learner and to enhance learning outcomes. To investigate how different procedural scaffolds contribute to learning outcomes, we conducted a between-subject quasiexperiment with 333 Chinese blue-collar workers. Our results show that comprehensive tutorials at the beginning of the learning process have a positive influence on learning outcomes in contrast to instructional overlays during the learning process as well as a combination of both scaffolds. Consequently, we did not observe that procedural scaffolds per se have a positive impact on learning outcomes, but the right scaffold in the right context has the potential to increase learning outcomes.
Kommentierung von Art. 42, 43 DSGVO und § 9a BDSG.Hornung, Gerrit. In Auernhammer: Datenschutz-Grundverordnung, Bundesdatenschutzgesetz und Nebengesetze, Kommentar, 5.th ed., M. Eßer, P. Kramer, K. v. Lewinski (eds.). Carl Heymanns Verlag, Köln, 2017.
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Informationelle Selbstbestimmung im digitalen Wandel. Friedewald, Michael; Lamla, Jörn; Roßnagel, Alexander. Springer, Wiesbaden, 2017.
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Einleitung: Informationelle Selbstbestimmung im digitalen Wandel.Friedewald, Michael; Lamla, Jörg; Roßnagel, Alexander. In Informationelle Selbstbestimmung im digitalen Wandel, pp. 1–8. 2017.
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Datenschutz durch Technikgestaltung.Barlag, Charlotte. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 172–179. Nomos, Baden-Baden, 2017.
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Datensicherheit.Barlag, Charlotte. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 165–172. Nomos, Baden-Baden, 2017.
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Bundestag: Gesetz zum Abbau der Schriftform im Verwaltungsrecht des Bundes beschlossen.Johannes, P. C. In ZD-Aktuell, (3), p. 05489. 2017.
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Technology-assisted supplemental work and ego depletion – Role of person and situation.Duranova, Lenka; Ohly, Sandra; Schmitt, Antje; Braukmann, Johanna. In Proceedings of the 18th EAWOP Congress 2017 - Enabling Change through Work and Organizational Psychology, p. 611. 2017.
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Purpose: Technology-assisted supplemental work (TASW; Fenner & Renn, 2010) is believed to contribute to ego depletion, but empirical results are inconsistent. Following conservation of resources theory, we suppose that employees performing TASW and, at the same time, achieving goals report lower levels of ego depletion than employees without goal achievement as a resource. Furthermore, we expect employees high on negative affectivity experiencing the highest levels of ego depletion. Design/Methodology: Using a daily diary study design, data were collected online from 148 knowledge workers in Germany who completed a general survey and three daily surveys over 5 work days. Results: Hierarchical moderation analyses support our hypotheses. Long TASW in the combination with high goal achievement and low NA does not contribute to ego depletion the next day – on the contrary, it diminishes. Furthermore, in the combination of low goal achievement and high NA, TASW turns into a stressor. Limitations: The constructs were measured with self-report scales. Research/Practical Implications: The results emphasize the relevance of conscious handling one’s own resources after hours. Future research should shed more light on the circumstances and long-term consequences of TASW. Originality/Value: Our study contributes to the emerging research on TASW by examining its consequences and boundary conditions. The findings suggest TASW having negative effects only for some employees under some circumstances.
White Paper Datenschutz-Folgenabschätzung, Ein Werkzeug für einen besseren Datenschutz. Friedewald, M.; Bieker, F.; Obersteller, H.; Nebel, M.; Martin, N.; Rost, M.; Hansen, M. Friedewald; A. Quinn; Hansen; Heesen; Hess; Lamla; Matt; R. A.; Trepte; Waidner (eds.). Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, Karlsruhe, 2017.
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Antecedents and consequences of always on.Duranova, Lenka; Ohly, Sandra; Weigelt, Oliver; Hoffmann, Katja. In Proceedings of the 10. Tagung der Fachgruppe Arbeits-, Organisations- und Wirtschaftspsychologie (AOW) der Deutschen Gesellschaft für Psychologie (DGPs) in Dresden, p. 196. 2017.
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Research Question According to effort-recovery theory (Meijman & Mulder, 1998), employees need recovery from work-related effort. However, work stressors influence employees even beyond their workplaces. Furthermore, the rapid development of new technologies leads to growth in work-related technology use after hours. Consequently, the opportunities for employee recovery are reduced. In order to shed light on the supplemental work behaviour through technology use after hours, we examine its antecedents and consequences. Study Design We used a shortitudinal panel design. Data from 73 full-time workers in Germany were collected online on Friday after work, at the weekend, and on Monday morning before going to work. Results Serial mediation analysis supported the hypotheses. Results indicate that work stressors influence work-related technology use after hours, which, in turn, hinders psychological detachment from work and impairs sleep quality. Limitations Future research should shed more light on the long-term consequences of work-related technology use after hours and systematically take personal and situational factors into account. Implications Our findings emphasize the importance of the need for developing strategies to prevent and handle work stressors and supplemental work after hours. Contribution This study contributes to stress and recovery research and the emerging research on work-related technology use after hours by examining its antecedents and consequences.
Privacy Arena. Kontroversen um Privatheit im digitalen Zeitalter. Baumann, Joel; Lamla, Jörn. 2017.
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Bundesrat stimmt neuem BDSG zu.Johannes, P. C. In ZD-Aktuell, (9), p. 05626. 2017.
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Individual Appropriation of Learning Management Systems—Antecedents and Consequences.Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In AIS Transactions on Human-Computer Interaction, 9(3), pp. 173–201. 2017.
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IT support in the learning process constitutes a key factor for the success of innovative teaching/learning scenarios. To ensure learning success in innovative teaching/learning scenarios, learners need to faithfully apply learning management systems (LMS). However, we lack theoretical insights into which factors affect whether they do so. To help solve this issue, we first used adaptive structuration theory to identify antecedents and consequences regarding faithful LMS appropriation and embed them into a theoretical model. Second, we conducted a survey study with 173 participants to evaluate the model. The results show that the perceived IT support, interactivity, and the tasktechnology fit significantly affect the degree to which learners faithfully apply a LMS. Moreover, the results indicate that faithful appropriation is a significant indicator of the learning process satisfaction as well as perceived learning success. The present paper thus theoretically contributes to the scientific discussion concerning technology
Der Beschäftigtendatenschutz nach der Datenschutz-Grundverordnung - Getrennte Regelungen für den öffentlichen und nicht öffentlichen Bereich.Maier, Natalie. In Datenschutz und Datensicherheit, 41(3), pp. 169–174. 2017.
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DS-GVO: Anleitung zur autonomen Auslegung des Personenbezug.Hofmann, LL.M.; Johannes, LL.M. In ZD, 5, pp. 221–226. 2017.
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Fostering business model extensions for ICT-enabled human-centered service systems.Kleinschmidt, Stefan; Peters, Christoph. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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How Technology-Enhanced Scaffolding Contributes to Problem-Solving Outcomes in Management Education.Janson, Andreas; Söllner, Matthias. In Academy of Management Annual Meeting (AOM). Atlanta, Georgia, USA, 2017.
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The Antecedents of Transaction Costs in Digital Ecosystems: A Configurational View on the Interplay of App Architecture and Platform Governance.Dellermann, Dominik; Reck, Fabian. In Hawaii International Conference on System Sciences (HICSS). Waikoloa, HI, USA., 2017.
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The Efficient Provision of Culture-Sensitive Services: A Modularization Approach.Janson, Andreas; Peters, Christoph; Leimeister, Jan Marco. In Serviceology for Smart Service System, Y. Sawatani, J. Spohrer, S. Kwan, T. Takenaka (eds.), pp. 147–157. Springer, Tokyo, Japan, 2017.
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Build your city! - Engaging citizens in crowdfunding projects.Kunz, Michael Marcin; Englisch, Oliver; Bretschneider, Ulrich. In European Conference on Information Systems (ECIS). Guimarães, Portugal, 2017.
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Anwendungsbereich der Datenschutz-Grundverordnung.Barlag, Charlotte. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 108–118. Nomos, Baden-Baden, 2017.
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Digital Innovation in the Energy Industry: The Impact of Controversies on the Evolution of Innovation Ecosystems.Kolloch, Michael; Dellermann, Dominik. In Technological Forecasting & Social Change. 2017.
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Persönlichkeitsrechtliche Grenzen des presserechtlichen Auskunftsanspruchs. Normative Unterschiede, interpretatorische Einebnungen und Reformbedarf.Hornung, Gerrit. In AfP - Zeitschrift für Medien- und Kommunikationsrecht, pp. 390–396. 2017.
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Measuring the Capability of Smartphones for Executing Context Algorithms.Kroll, Dennis; David, Klaus. In INFORMATIK 2017, M. Eibl, M. Gaedke (eds.), pp. 1591–1596. Gesellschaft für Informatik, Bonn, Germany, 2017.
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While the rise of context aware apps remains, the question arises whether algorithms for context processing can be applied to any smartphone and for any user. In this paper, we propose to test context algorithms for each specific smartphone, user, and situation to which a context algorithm is applied. Towards this, we present our framework which automatically measures all relevant information about an app's runtime properties, i.e. resource utilization and the time taken to process sensor values by a context algorithm. Both information can be automatically returned to the app developers in order to improve the app. We implemented the framework on Android and tested it using the example of a state-of-the-art context algorithm to find out whether our test smartphone is capable of running the context algorithm without delays and deadlocks.
Simulating Cheated Results Acceptance Rates for Gossip-Based Volunteer Computing.Kopal, Nils; Heck, Henner; Wacker, Arno. In International Journal of Mobile Network Design and Innovation, 7(1), pp. 56–67. Inderscience Publishers (IEL), 2017.
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Text Mining in Ideencommunities: Gestaltungsempfehlungen eines Text Mining Artefakts zur Unterstützung der Ideenevaluation.Maier, Thomas; Gronich, Sebastian; Rickert, Ann-Katrin; Lipusch, Nikolaus. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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ePrivacy-VO – alle Risiken der elektronischen Kommunikation gebannt? Entwurf ohne datenschutzrechtliche Regelungen für P2P-Kommunikationsdienste.Maier, Natalie; Schaller, Fabian. In Zeitschrift für Datenschutz, 7(8), pp. 373–377. 2017.
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Der Wert der Musik: Aushandlungsdynamiken in der digitalisierten Musikwirtschaft.Kropf, Jonathan. In kommunikation@gesellschaft, 18(8). 2017.
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Observing Human Activity Through Sensing.Gautama, Sidharta; Atzmueller, Martin; Kostakos, Vasillis; Gillis, Dominique; Hosio, Simo. In Participatory Sensing, Opinions and Collective Awareness, V. Loreto, M. Haklay, A. Hotho, V. D. Servedio, G. Stumme, F. Tria, J. Theunis (eds.). Springer Verlag, Heidelberg, Germany, 2017.
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Buchbesprechung: Florian Schneider, Meldepflichten im IT-Sicherheitsrecht. Datenschutz, Kritische Infrastrukturen und besondere Dienste.Hornung, Gerrit. In Computer und Recht, pp. R89-R90. 2017.
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"Zertifizierung".Bile, Tamer. In Das neue Datenschutzrecht - Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 211–220. Nomos, Baden-Baden, 2017.
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Forum Privatheit und selbstbestimmtes Leben in einer Digitalen Welt - Phase II.Bile, T.; Grigorjew, O. In ZD-Aktuell, (7), p. 05557. 2017.
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Forschungsdatenmanagement in der Rechtswissenschaft – Eine Betrachtung von außen nach innen.Johannes, Paul Christopher. In Die öffentliche Verwaltung, 21(70), pp. 899–906. 2017.
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Privilegierte Verarbeitung im BDSG-E – Regeln für Archivierung, Forschung und Statistik.Johannes, Paul Christopher; Richter, Philipp. In Datenschutz und Datensicherheit, 41(5), pp. 300 – 305. 2017.
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Datensparsamkeit: Zukunftsfähig statt überholt.Hornung, Gerrit. In Spektrum SPEZIAL Physik Mathematik Technik, 1, pp. 62–67. 2017.
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Mining Attributed Networks.Kanawati, Rushed; Atzmueller, Martin. 2017.
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Adaptive Cheat Detection in Decentralized Volunteer Computing with Untrusted Nodes.Kopal, Nils; Wander, Matthäus; Konze, Christopher; Heck, Henner. In IFIP International Conference on Distributed Applications and Interoperable Systems (DAIS), of Lecture Notes in Computer Science, pp. 192–205. Springer, 2017.
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Beschäftigtendatenschutz.Maier, Natalie; Ossoinig, Verena. In Das neue Datenschutzrecht - Europäische Datenschutz-Grundverordnung und deutsche Datenschutzgesetze, A. Roßnagel (ed.), pp. 338–347. Nomos, Baden-Baden, 2017.
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An Empirical Investigation of Signaling in Reward-Based Crowdfunding.Kunz, Michael Marcin; Bretschneider, Ulrich; Erler, Max; Leimeister, Jan Marco. In Electronic Commerce Research, 17(3), pp. 425–461. 2017.
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Start-ups often face the challenge of a shortage of capital, the so-called funding gap, which can be overcome by raising small amounts of money from a large number of individuals. As crowdfunding suffers from a continuous rise in failure rates, the aim of this article is to contribute to the research concerning success factors in reward-based crowdfunding campaigns by focusing on signaling theory. Based on data retrieved from the crowdfunding platform Kickstarter, our results indicate that social ties, investment preparation and presentation, the supply of multiple rewards as well as endeavors to communicate and interact with the crowd positively influence the probability of success of a reward-based crowdfunding campaign. In contrast, the funding goal, a campaign’s runtime and the estimated time of delivery for the rewards have a negative impact on the successful completion of a campaign.
Forschungsprojekt: „Always Online? – ein neues Kommunikationsparadigma für die Kommunikationsgesellschaft (Social Link)“.Maier, Natalie; Ossoinig, Verena. In ZD-Aktuell, (21). 2017.
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Was bedeutet das „Strucksche Gesetz“ für die Betroffenenrechte nach der Datenschutzreform?Hofmann, Kai. In ZD-Aktuell, (05620). 2017.
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Not Just An Ego Trip: Exploring Backers’ Motivation for Funding in Incentive-Based Crowdfunding.Bretschneider, Ulrich; Leimeister, Jan Marco. In Journal of Strategic Information Systems (JSIS), 26(4), pp. 246–260. 2017.
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Incentive-based forms of crowdfunding – such as reward-, equity- and lending-based crowdfunding – are becoming increasingly popular. However, research that studies backers’ motivations for funding in these environments is still in an embryonic state, revealing an inconsistent and narrow picture. The few existing studies are largely guided by the idea that backers are mainly egoistically motivated and do not have prosocial motives. We developed a research model that describes backers’ motivation and conducted an empirical study to examine this model. Results indicate that backers indeed have several self-interest motivations for funding: prospect of a reward; expectation of recognition from others; to lobby a certain project in the hopes of its fruition; and to develop their image. However, some backers are also prosocially motivated in that they develop feelings of liking for a certain venture and/or project team. Furthermore, we found evidence that herding has a significant moderating effect on backers’ reward motivation. Strategic IS researchers as well as crowdfunding practitioners can draw on our findings to systematically design, implement, and evaluate potential incentive systems that respond to reward-, recognition-, lobbying-, image- and liking-motives and thereby attract the crowd more effectively to invest in ventures presented on incentive-based crowdfunding systems.
Natürliche Benutzungsschnittstelle zur Steuerung eines Flugroboters.Herrmann, R.; Schmidt, L. In Mensch und Computer 2017 - Workshopband (Regensburg 2017), M. Burghardt, R. Wimmer, C. Wolff, C. Womser-Hacker (eds.), pp. 637–640. Gesellschaft für Informatik e. V, Bonn, 2017.
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Flugroboter werden immer populärer und in immer mehr Alltagsszenarien eingesetzt. Dies forciert den Bedarf nach intuitiven und gebrauchstauglichen Steuerungen. Wir demonstrieren eine entworfene natürliche Benutzungsschnittstelle zur Steuerung eines Flugroboters, die in einer Benutzerstudie mit einer traditionellen Steuerung verglichen wurde. Hierfür verwenden wir ein bewegungserkennendes Armband und eine Microsoft HoloLens für die visuelle und auditive Ausgabe von Rückmeldungen und die Steuerung des Flugroboters über die Kopfneigung des Benutzers. Weitere Informationen zu der entworfenen natürlichen Benutzungsschnittstelle, sowie Ergebnisse der Benutzerstudie sind im dazugehörigen Langbeitrag (Herrmann \& Schmidt, 2017) beschrieben.
Nutzeranforderungen an ein adaptiv lernendes Reiseassistenzsystem für Datenbrillen.Klose, E.; Eis, A.; Hegenberg, J.; Schmidt, L. In Soziotechnische Gestaltung des digitalen Wandels - kreativ, innovativ, sinnhaft: 63. Kongress der Gesellschaft für Arbeitswissenschaft (Brugg-Windisch 2017), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (F.1.13). GfA-Press, Dortmund, 2017.
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Für die Entwicklung eines persönlichen, adaptiv lernenden Reiseassistenzsystems (RAS) für den öffentlichen Verkehr auf Basis von Augmented Reality wurde in der Anforderungsanalyse ein Mixed-Methods-Ansatz mit Fokusgruppen (n = 40) und einer Online-Befragung (n = 311) gewählt. Die Ergebnisse zeigen, dass ein Großteil der Nutzer sich vorstellen kann, ein RAS zu nutzen, viele bei der Verwendung von Datenbrillen und Sprachinteraktion im öffentlichen Raum jedoch Bedenken haben. Als wichtigste Funktionen eines RAS werden die Unterstützung im Störungsfall, die Fußgängernavigation sowie die Versorgung mit Informationen zur Reisekette angesehen.
Towards Design Excellence for Context-Aware Services - The Case of Mobile Navigation Apps.Knote, Robin; Söllner, Matthias. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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To satisfy service customers and create unique value in a digitized world, companies must strive for exceeding customers’ expectations of e-service experience by establishing high e-service quality. However, an increasing amount of e-services is performed by context-aware mobile technology, which is able to sense and react to changes in the user’s environment. Although these context-aware services are able to address our personal needs and already determine our everyday live, knowledge on how to develop such services is sparse. In our study, we qualitatively compare three mobile navigation apps based on their user reviews in order to elicit first requirements and design approaches for e-service quality oriented design. Results show that well known e-service quality models are not fully applicable to the case of mobile navigation services.
Onto Explicative Data Mining: Exploratory, Interpretable and Explainable Analysis.Atzmueller, Martin. In Proc. Dutch-Belgian Database Day. TU Eindhoven, Netherlands, 2017.
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GeopNu: Neues Forschungsprojekt zur Nutzeridentifikation im Gebäudebetrieb.Braun, S. In ZD-Aktuell, (5), p. 05529. 2017.
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Contact Patterns, Group Interaction and Dynamics on Socio-Behavioral Multiplex Networks.Atzmueller, Martin; Thiele, Lisa; Stumme, Gerd; Kauffeld, Simone. In Proc. Annual Machine Learning Conference of the Benelux (Benelearn 2017). Eindhoven University of Technology, Eindhoven, The Netherlands, 2017.
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Gegenüberstellung – Der Datenschutzbeauftragte nach DS-GVO, JI-Richtlinie und zukünftigem BDSG.Johannes, P. C. In ZD, (12), pp. 8–12. 2017.
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„Intelligentes Energiemanagement im Unternehmen – Rechtliche Anforderungen aus Sicht des Datenschutzes“.Braun, S. In RECHT 4.0 – Innovationen aus den rechtswissenschaftlichen Laboren, Tagungsband DSRI Herbstakademie, J. Taeger (ed.). Edewecht, 2017.
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State of the Art in Architectures for Self-aware Computing Systems.Giese, Holger; Vogel, Thomas; Diaconescu, Ada; Götz, Sebastian; Bencomo, Nelly; Geihs, Kurt; Kounev, Samuel; Bellman, Kirstie L. In Self-Aware Computing Systems, pp. 237–275. Springer, 2017.
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Collective Sensing Platforms.Atzmueller, Martin; Becker, Martin; Mueller, Juergen. In Participatory Sensing, Opinions and Collective Awareness, V. Loreto, M. Haklay, A. Hotho, V. D. Servedio, G. Stumme, F. Tria, J. Theunis (eds.). Springer Verlag, Heidelberg, Germany, 2017.
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Die Gegenüberstellung – Allgemeine Grundsätze der Datenverarbeitung nach neuem BDSG, DS-GVO und JI-Richtlinie.Johannes, P. C. In ZD-Aktuell, (15), p. 05757. 2017.
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Work-related ICT events in the evening and work-home conflict – the role of perceived organizational expectations.Braukmann, Johanna; Schmitt, Antje; Duranova, Lenka; Ohly, Sandra. In Proceedings of the 18th EAWOP Congress 2017 - Enabling Change through Work and Organizational Psychology, p. 2010. 2017.
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Purpose Within the framework of Boundary Theory (Ashforth et al., 2000), various studies show how intense work-related ICT use after hours is related to a higher work-home conflict. In this study, we hypothesized that this relationship will be moderated by organizational expectations regarding a) ICT availability, b) ICT response time and 3) time sacrifices at home (organizational time demands). Design/Methodology Within a diary study with 104 German employed knowledge workers, cross-level interaction effects between ICT-related events in the evening (“work emails”, “work calls”, “finishing tasks”) and organizational expectations on work-home conflict were analyzed with HLM. Results Interaction effects were significant only for work emails, showing that when perceived ICT response expectations or organizational time demands are high, work emails are related to a higher work-home conflict compared to low perceived expectations. Effects were stable when controlled for time pressure, working hours and duration of ICT use. Limitations We relied on subjective measures of organizational expectations at an individual level. Research/Practical Implications Our study shows that organizational expectations are a meaningful factor that may determine if work emails are related to work-home conflict experiences or not. Employers should raise awareness for potentially implicit organizational expectations and optimize their “email culture”. Originality/Value This study contributes to literature by operationalizing different purposes of ICT use beyond its mere duration. Compared to other studies, it focuses on injunctive as opposed to descriptive organizational norms (Cialdini et al., 1991) and shows that the role of organizational expectations varies for different forms of ICT use.
Der NSA-Skandal als Krise der Demokratie? Selbstreflexionen der Öffentlichkeit in der Privacy-Arena.Lamla, Jörn; Ochs, Carsten. In Kritische Öffentlichkeiten – Öffentlichkeiten in der Kritik, K. Hahn, A. Langenohl (eds.), pp. 83–112. Springer, Wiesbaden, 2017.
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On the Usability of Probably Approximately Correct Implication Bases.Borchmann, Daniel; Hanika, Tom; Obiedkov, Sergei. In Formal Concept Analysis - 14th International Conference, ICFCA 2017, Rennes, France, June 13-16, 2017, Proceedings, Vol. 10308 of Lecture Notes in Computer Science, K. Bertet, D. Borchmann, P. Cellier, S. Ferré (eds.), pp. 72–88. Springer, 2017.
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Zur Rolle der Informatik in der Digitalisierung. Brenner, Walter; Broy, Manfred; Leimeister, Jan Marco. St. Gallen, Switzerland, 2017.
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Individuality in Social Networks.Borchmann, Daniel; Hanika, Tom. In Formal Concept Analysis of Social Networks, R. Missaoui, S. O. Kuznetsov, S. Obiedkov (eds.), pp. 19–40. Springer International Publishing, Cham, 2017.
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We consider individuality in bi-modal social networks, a facet that has not been considered before in the mathematical analysis of social networks. We use methods from formal concept analysis to develop a natural definition for individuality, and provide experimental evidence that this yields a meaningful approach for additional insights into the nature of social networks.
An Activity History based Approach for Recognizing the Mode of Transportation.Jahn, Andreas; Kroll, Dennis; Lau, Sian Lun; David, Klaus. In Proceedings of the IEEE Conference on Open Systems (ICOS), pp. 1–5. IEEE, Miri, Sarawak, Malaysia, 2017.
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By understanding a person's context, smart assistant systems aim to simplify and automate tasks. One type of useful context information is the mode of transportation. Commonly, the mode of transportation is recognized by analyzing raw sensor data of mobile devices, such as a smartphone. However, fine-grained sampling and collecting sensor data at high frequency to analyze raw sensor data is also conducted by activity recognition systems. These systems have been shown to accurately recognize activities such as sitting, standing, or walking. This means several systems analyze raw data for their needs. In our opinion, this doubled use of resources should be avoided. In this paper, we propose an approach, which avoids doubled raw sensor data analysis by taking advantage of the already available information of a person's activity. As a hypothesis, the approach assumes that observed activity sequences can lead to the mode of transportation. Thus, we aim to map activity sequences to modes of transportation. Applying the proposed approach, we show that the three different modes of transportation car, tram, and bus are recognized with an accuracy of up to 97%.
Focus on the User: A User Relative Coordinate System for Activity Detection.Jahn, Andreas; Bachmann, Marek; Wenzel, Philipp; David, Klaus. In Modeling and Using Context: Proceedings of the 10th International and Interdisciplinary Conference, CONTEXT 2017, P. Brézillon, R. Turner, C. Penco (eds.), pp. 582–595. Springer International Publishing, Cham, Switzerland, 2017.
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The information about a person's activity, as a special type of contextual information, can be used for a multitude of applications. Thus, activity detection is a focus in research. For activity detection, usually measured sensor data are processed and matched to known activities. Unfortunately, measured sensor data can be inconsistent for the same activity. Depending on the device orientation and in which direction of compass the user is heading (while carrying out an activity) the sensor data changes. As a result, expected values on one sensor axis appear on another one and it is challenging for a pre-generated activity detection model to match the sensor data to the activity. However, the intuitive solution seems to be easy: focus on the user. Regardless of the device orientation or the cardinal direction, the activity never change for the user. In this paper, we present an approach to focus on the user in activity detection. We convert sensor data into a representation relative to the user. Thus, the sensor data stay consistent regardless of the device orientation or the cardinal direction. We show that by using the focus on the user approach the detection rates increase up to 21.7%. Also, the detection is more reliable (lower standard deviation). We prove the reliable activity detection for different device orientations, cardinal directions, types of algorithms, sensor sets, activities, and sensor positions.
Probabilistic wind power forecasting: A multi-scheme ensemble technique with gradual coopetitive soft gating.Gensler, A.; Sick, B. In IEEE Symposium Series on Computational Intelligence (SSCI), pp. 1–10. IEEE, 2017.
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Risikoadäquate Regelungen für das Internet der Dienste und Dinge?Geminn, Christian Ludwig. In Datenschutz und Datensicherheit, 41(5), pp. 295–299. 2017.
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Lifting Low-Level Changes through User-Defined Graph-Rule-Based Patterns.Jahl, Alexander; Baraki, Harun; Tran, Huu Tam; Kuppili, Ramaprasad; Geihs, Kurt. In Proceedings of the 17th IFIP International Conference on Distributed Applications and Interoperable Systems: DAIS, pp. 115–128. Springer, 2017.
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In dynamic service-oriented architectures, services and service compositions underlie constant evolution that may not only affect the own workflow but dependent services too. Subsequently, required adaptations necessitate an effective detection of the changes and their effects. Merely capturing a sequence of low-level changes and analyzing each of them demands much coordination and may lead to an incomplete picture. An abstraction that summarizes a combination of low-level changes will facilitate the detection and reduce the number of changes that shall be considered for adaptation. In this paper, we propose an abstraction that is formulated through graph-based patterns, since service compositions are workflows that can be mapped to directed labeled graphs. The characteristics and granularity of a graph pattern can be adjusted by domain experts to the respective workflow language and application case. In particular, graph-based patterns are crucial when workflows are represented in two different formats. This could be the case if there exists one representation for the execution and one for the verification. We present implementation details and a detailed example that shows the feasibility and simplicity of our solution.
Telekommunikation.Geminn, Christian; Richter, Philipp. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 276–290. Nomos, Baden-Baden, 2017.
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Telemedien.Geminn, Christian; Richter, Philipp. In Europäische Datenschutz-Grundverordnung, Vorrang des Unionsrechts – Anwendbarkeit des nationalen Rechts, A. Roßnagel (ed.), pp. 290–301. Nomos, Baden-Baden, 2017.
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Internationalisierung vs. Nationalisierung im Zeitalter der digitalen Gesellschaft. Wege aus einer Krise des Rechts und der Demokratie.Geminn, Christian; Nebel, Maxi. In „Informationelle Selbstbestimmung im digitalen Wandel“, DuD-Fachbeiträge, M. Friedewald, J. Lamla, A. Roßnagel (eds.), pp. 287–318. Wiesbaden, 2017.
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Evaluating Connection Resilience for the Overlay Network Kademlia.Heck, Henner; Kieselmann, Olga; Wacker, Arno. In 37th IEEE International Conference on Distributed Computing Systems (ICDCS 2017), pp. 2581–2584. IEEE Computer Society, Atlanta, GA, USA, 2017.
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Kademlia is a decentralized overlay network, up to now mainly used for highly scalable file sharing applications. Due to its distributed nature, it is free from single points of failure. Communication can happen over redundant network paths, which makes information distribution with Kademlia resilient against failing nodes and attacks. In this paper, we simulate Kademlia networks with varying parameters and analyze the number of node-disjoint paths. With our results, we show the influence of these parameters on the network connectivity and, therefore, the resilience against failing nodes and communication channels.
Auf dem Weg zu einer Informatik neuer Prägung in Wissenschaft, Studium und Wirtschaft.Brenner, Walter; Broy, Manfred; Leimeister, Jan Marco. In Informatik-Spektrum, 40(6), pp. 602–606. 2017.
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Muskat: Projekt zur verbesserten Videoüberwachung abgeschlossen.Johannes, P. C. In ZD-Aktuell, (21), p. 05898. 2017.
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Szenariobasierter Prototyp für ein Reiseassistenzsystem mit Datenbrillen.Eis, A.; Klose, E. M.; Hegenberg, J.; Schmidt, L. In Mensch und Computer 2017 - Tagungsband (Regensburg 2017), M. Burghardt, R. Wimmer, C. Wolff, C. Womser-Hacker (eds.), pp. 203–214. Gesellschaft für Informatik e. V, Bonn, 2017.
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Der Beitrag beschreibt die Gestaltung, prototypische Umsetzung und Evaluation eines Reiseassistenzsystems mit Datenbrillen für intermodale Reiseketten im öffentlichen Verkehr. Die Grundlage bildet ein Szenario, welches die Reisekette ab der eigenen Haustür bis zum Gate an einem Flughafen darstellt und mehrere Verkehrsmittelwechsel sowie Fußwege beinhaltet. Die Datenbrille liefert dem Nutzer reiserelevante Informationen, die situations- und nutzergerecht dargestellt werden sollten. Der szenariobasierte Prototyp wurde für die Durchsichtdatenbrille Epson Moverio BT-200 entwickelt und in einer Laborstudie mit zwölf Probanden formativ evaluiert. Die Ergebnisse zeigen, dass die Nutzung eines Reiseassistenzsystems mit Datenbrillen, insbesondere in unbekannter Umgebung, als hilfreich erachtet wird.
A Scalable Framework for Data-Driven Ontology Evaluation.Knoell, Daniel; Atzmueller, Martin; Rieder, Constantin; Scherer, Klaus Peter. In Proc. GWEM 2017, co-located with 9th Conference Professional Knowledge Management (WM 2017). KIT, Karlsruhe, Germany, 2017.
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Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, Phase II. Technical Report (05557), . Grigorjew, Dr. Olga; Bile, LL.M. Projektgruppe verfassungsverträgliche Technikgestaltung, 2017.
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Änderung des TMG: Gelungene Nachbesserung für einen rechtssicheren offenen WLAN-Betrieb?Grigorjew, Dr. Olga; Bile, Tamer. In ZD-Aktuell, Heft 9(05621). 2017.
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Änderung des TMG: Gelungene Nachbesserung für einen rechtssicheren offenen WLAN-Betrieb?Grigorjew, O.; Bile, T. In ZD-Aktuell, (9), p. 05621. 2017.
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Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt.Grigorjew, O.; Nebel, M. In ZD-Aktuell, (5), p. 05532. 2017.
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Keep them alive! Design and Evaluation of the "Community Fostering Reference Model".Bretschneider, Ulrich; Hartmann, Marco; Leimeister, Jan Marco. In Business Information System & Engineering (BISE), 60(6), pp. 493–511. 2017.
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Firms host online communities for commercial purposes, for example in order to integrate customers into ideation for new product development. The success of these firm-hosted online communities depends entirely on the cooperation of a high number of customers that constantly produce valuable knowledge for firms. However, in practice, the majority of successfully implemented communities suffers from stagnation and even a decrease of member activities over time. Literature provides numerous guidelines on how to build and launch these online communities. While these models describe the initial steps of acquiring and activating a community base from scratch very well and explicitly, they neglect continuous member activation and acquistion after a successful launch. Against this background, the authors propose the Community Fostering Reference Model (CoFoRM), which represents a set of general procedures and instruments to continuously foster member activity. In this paper, the authors present the theory-driven design as well as the evaluation of the CoFoRM in a practical use setting. The evaluation results reveal that the CoFoRM represents a valuable instrument in the daily working routine of community managers, since it efficiently helps activating community members especially in the late phases of a community’s lifecycle.
A Concept for Intelligent Collaborative Network Intrusion Detection.Gruhl, Christian; Beer, Frank; Heck, Henner; Sick, Bernhard; Buehler, Ulrich; Wacker, Arno; Tomforde, Sven. In ARCS 2017; 30th International Conference on Architecture of Computing Systems; Proceedings of, pp. 1–8. VDE, 2017.
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Exceptional Model Mining in Ubiquitous and Social Environments.Atzmueller, Martin. In Proc. Annual Machine Learning Conference of the Benelux (Benelearn 2017). Eindhoven University of Technology, Eindhoven, The Netherlands, 2017.
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„Dieselgipfel“ und die datenschutzrechtlichen Fragestellungen.Goeble, Thilo; Kottke, Clara. In ZD-Aktuell, 15(05759). 2017.
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NICER911: Ad-hoc Communication and Emergency Services Using Networking Smartphones and Wireless Home Routers.Meurisch, Christian; Nguyen, The An Binh; Wulkotte, Stefan; Niemczyk, Stefan; Kohnhäuser, Florian; Mühlhäuser, Max. In Proceedings of the 18th International Symposium on Mobile Ad Hoc Net-working and Computing (MobiHoc 2017). Madras, Chennai, India, 2017.
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Descriptive Community Detection.Atzmueller, Martin. In Formal Concept Analysis in Social Network Analysis, R. Missaoui, S. Obiedkov, S. Kuznetsov (eds.). Springer Verlag, Berlin/Heidelberg, Germany, 2017.
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PrivacyScore: Analyse von Webseiten auf Sicherheits- und Privatheitsprobleme – Konzept und rechtliche Zulässigkeit.Laubach, A.; Maass, M.; Herrmann, D. In Eibl, M./ Gaedtke, M. (Hrsg.), INFORMATIK 2017 GI-Tagungsband – Lecture Notes in Informatics (LNI), M. Eibl, M. Gaedtke (eds.), pp. 1049–1060. Bonn, 2017.
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Radar: Neues Sicherheitssystem soll Gefährder bewerten.Johannes, P. C. In ZD-Aktuell, (3), p. 05491. 2017.
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How to Design an Internal Crowdsourcing System.Knop, Nicolas; Durward, David; Blohm, Ivo. In International Conference on Information Systems (ICIS). Seoul, South Korea, 2017.
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Kompetenzvermittlung in teilnehmerstarken Lehrveranstaltungen unter Verwendung von formativem Peer Assessment.Lehmann, Katja; Leimeister, Jan Marco. In Neues Handbuch Hochschullehre, D. B. Berendt; D. A. Fleischmann; P. D. N. Schaper; D. B. Szczyrba; P. D. D. h.c. J. Wildt (eds.). DUZ Verlags- und Medienhaus GmbH, Berlin, 2017.
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Dieser Beitrag zeigt, wie Studierende mit Hilfe von Peer Assessment auch in teilnehmerstarken Lehrveranstaltungen konkretes Feedback zu ihrem individuellen Lernstand bekommen können. Am Beispiel einer Grundlagenvorlesung im Fach Wirtschaftsinformatik erklären wir den Einsatz von Peer Assessment mit Hilfe der Lernplattform „Moodle“ und zeigen auf, wie es uns gelungen ist, damit in einer Massenvorlesung Interaktion und Kompetenzerwerb zu fördern. Darüber hinaus geben wir, basierend auf den Rückmeldungen der Studierenden und unseren eigenen Erfahrungen, Empfehlungen für die praktische Umsetzung.
Community Detection and Analysis on Attributed Social Networks.Atzmueller, Martin. In Encyclopedia of Social Network Analysis and Mining. Springer, Heidelberg, Germany, 2017.
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Anomaly Analytics and Structural Assessment in Process Industries.Atzmueller, Martin; Arnu, David; Schmidt, Andreas. In Proc. Annual Machine Learning Conference of the Benelux (Benelearn 2017). Eindhoven University of Technology, Eindhoven, The Netherlands, 2017.
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Third Time is a Charm – Determining the Required Number of Assessors when Using Peer Assessment in Large-Scale Lectures.Lehmann, Katja; Söllner, Matthias; Blohm, Ivo; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Seoul, South Korea, 2017.
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Although peer assessment is a widely used didactical method in higher education, little is known about a) how many peer assessors are required to receive a stable assessment on a peer’s solution and b) how valid this assessment is compared to an expert assessment. To fill these gaps, we conducted a peer assessment in a large-scale lecture. Overall, 136 students participated in the peer assessment. Each student had to complete an assignment, which was then anonymously evaluated by five randomly selected peers, and three independent experts. We applied a bootstrap-based Monte Carlo simulation based on our data. The results show that a) three peer assessors are sufficient for a stable assessment, and b) the peer assessors are less critical compared to experts. We thus contribute to literature by providing insights on how many peer assessors are required when applying peer assessment, and how comparable peer assessment is with expert assessment.
Anomaly Detection and Structural Analysis in Industrial Production Environments.Atzmueller, Martin; Arnu, David; Schmidt, Andreas. In Proc. International Data Science Conference (IDSC 2017). Salzburg, Austria, 2017.
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How to Design Patterns in IS Research – A State-of-the-Art Analysis.Günther, Andreas; Knote, Robin. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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Blueprinting Crowdfunding - Designing a Crowdfunding Service Configuration Framework.Haas, Philipp; Blohm, Ivo. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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Der BDSG-Entwurf und das Mysterium der „23“.Johannes, P. C. In ZD-Aktuell, (5), p. 05533. 2017.
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Die Gegenüberstellung – Der Datenschutzbeauftragte nach DS-GVO, JI-Richtlinie und zukünftigem BDSG.Johannes, P. C. In ZD-Aktuell, (17), p. 05794. 2017.
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Leveraging the Power of the Crowd for Software Testing.Leicht, Niklas; Blohm, Ivo; Leimeister, Jan Marco. In IEEE Software, 34(2), pp. 62–69. 2017.
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The rapid development of new IT-enabled business models, a fast-growing hardware market, and that market's segmentation are making software testing more complex. So, manual testing is becoming less applicable--economically and practicably. One approach to overcome these issues is crowdtesting--using crowdsourcing to perform testing. To profit from crowdtesting, companies can use three approaches: engage an external crowd of Internet users, engage their employees, or engage their customers. Three case studies illustrate these approaches' differences, benefits, and challenges, and the potential solutions to those challenges. Researchers' experiences with these approaches have led to guidelines that can help software development executives establish crowdtesting in their organizations. The Web Extra at extras.computer.org/extra/mso2017020062s1.pdf describes the procedure for the case studies. This article is part of a special issue on Crowdsourcing for Software Engineering.
LiDaKrA: BKA und LKA Hessen testen neues Internet-Analysetool.Johannes, P. C. In ZD-Aktuell, (12), p. 05663. 2017.
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Towards Requirement Patterns for Smart Physical Work Assistants.Knote, Robin; Söllner, Matthias; Leimeister, Jan Marco. In International Workshop on Requirements Patterns (RePa’ 17). Lisbon, Portugal, 2017.
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Privatheit in öffentlichen WLANs – Spannungsverhältnisse zwischen gesellschaftlicher Verantwortung, ökonomischen Interessen und rechtlichen Anforderungen, White Paper. Eisele, D.; Grigorjew, O.; Karaboga, M.; Matzner, T.; Morlok, T.; Nebel, M.; Ochs, C.; Robrahn, R.; Rzepka, C.; Fhom, H. S. Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, 2017.
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Safety Belt for Pedestrians.David, Klaus; Berndt, Hendrik. In Digital Marketplaces Unleashed, C. Linnhoff-Popien, R. Schneider, M. Zaddach (eds.), pp. 491–497. Springer Berlin Heidelberg, Berlin, Heidelberg, Germany, 2017.
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The paper outlines an innovative and efficient pedestrian protection system. It is mobile phone based and easy to implement. It detects and evaluates context and surroundings of vulnerable road users to reduce their number of accidents, injuries and fatalities. Involved stakeholders and potential business scenarios are identified.
Robotair.Hempel, M.; Wörner, M.; Letzing, S.; Hegenberg, J.; Herrmann, R.; Ziegner, D.; Schmidt, L.; Ordóñez Müller, A.; Günther, T.; Kroll, A.; Barz, T.; Schulz, D.; Otto, P.; Mench, S.; Reutemann, C.; Weise, A. Kassel, 2017.
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Das Ziel des Forschungsprojektes Robotair war die Entwicklung und Evaluation eines prototypischen, kostengünstigen Boden-Luft-Servicerobotersystems für die Detektion und Ortung von Druckluftleckagen zwecks nachhaltiger Ressourcen- und Energienutzung sowie für die Erfassung von Arbeitsumgebungsfaktoren zur Sicherstellung gesunder Arbeitsbedingungen und Steigerung der Produktivität. Durch die regelmäßige Inspektion von Druckluftanlagen werden frühzeitig Leckagen entdeckt, dadurch Verluste und der Primärenergieeinsatz verringert, was sich wiederum positiv auf den CO2-Ausstoß und das Klima auswirkt. Aufgrund schlechter räumlicher Erreichbarkeit, geringer Produktrelevanz und geringer Energiekosten wurde dies bisher oft vernachlässigt. Auch in der Gebäudetechnik sollten durch roboterbasierte, multimodale Kartierung der klimatischen Lokalsituation Einsparmöglichkeiten identifiziert und realisiert werden und gleichzeitig ein Beitrag zur Erfassung und Verbesserung der Arbeitsumgebungsbedingungen geleistet werden. In verschiedenen Studien wurden die wirtschaftliche Signifikanz und der große adressierbare Markt dokumentiert, wie auch eine Potentialabschätzung der Volkswagen AG und eine Kostenabschätzung der Forschungspartner auf Basis der EFFIROB-Systematik zeigte. Innerhalb des Forschungsprojektes wurden Anforderungen erhoben und ein Systemprototyp erstellt, dessen robuste Funktionsweise und Gebrauchstauglichkeit im Labor und in Feldstudien in der Automobilindustrie evaluiert wurde.
Designing a peer-based support system to support shakedown.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Seoul, South Korea, 2017.
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Augmented-Reality-Indoornavigation mit Datenbrillen.Klose, E. M.; Eis, A.; Hegenberg, J.; Schmidt, L. In Mensch und Computer 2017 - Tagungsband (Regensburg 2017), M. Burghardt, R. Wimmer, C. Wolff, C. Womser-Hacker (eds.), pp. 255–258. Gesellschaft für Informatik e. V, Bonn, 2017.
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In diesem Beitrag wird die Realisierung einer Versuchsumgebung beschrieben, die bei einem guten Verhältnis von Kosten, Aufwand und Genauigkeit eine Indoorlokalisierung mit Bluetooth-Low-Energy-Beacons ermöglicht. Es wird eine prototypische Indoornavigation mit einer Durchsichtdatenbrille vorgestellt, die dem Nutzer kontaktanaloge Navigationsanweisungen in 3-D entlang seines Zielpfades einblendet. Eine Nutzerevaluation zeigt, dass insbesondere die händefreie Interaktion als nützlich angesehen wird und die Gestaltung einer Augmented-Reality-Indoornavigation Ungenauigkeiten bei der Lokalisierung besonders berücksichtigen sollte, wenn relativ enge Wege genutzt werden.
Going East: A Framework for Reverse Innovation in SMEs.Dellermann, Dominik. In Journal of Business Strategy. 2017.
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S@NDRA: Neues Forschungsprojekt zur ständigen Erreichbarkeit in der digitalisierten Arbeitswelt.Miedzianowski, Nadine. In ZD-Aktuell. 2017.
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Evaluation eines Führungskräfte-Trainings zur effektiven Kommunikation von IKT-Erreichbarkeitserwartungen.Heissler, Clara; Ohly, Sandra. In Proceedings of the 10. Tagung der Fachgruppe Arbeits-, Organisations- und Wirtschaftspsychologie (AOW) der Deutschen Gesellschaft für Psychologie (DGPs) in Dresden, p. 259. 2017.
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Fragestellung. Die Zufriedenheit mit der beruflichen Kommunikation mit Hilfe von Informations- und Kommunikationstechnologien (IKT) außerhalb der Arbeitszeiten hängt damit zusammen, ob die eigene Führungskraft ihre Erwartungen bezüglich der erweiterten Erreichbarkeit klar kommuniziert. Häufig ist Führungskräften der eigene Einfluss auf das Nutzungsverhalten der Mitarbeiter nicht bewusst und eine Klärung der Erwartungen findet nur selten statt. Diese Studie verfolgt das Ziel, ein Führungskräfte-Training zur effektiven Kommunikation von Erreichbarkeitserwartungen zu konzipieren und durch eine Befragung der direkt unterstellten Mitarbeiter zu evaluieren. Untersuchungsdesign. Das fünfstündige Präsenz-Training unterstützt Führungskräfte dabei, ihre eigene Rolle für das IKT-Nutzungsverhalten ihrer Mitarbeiter kennenzulernen, Erreichbarkeitserwartungen zu definieren, und diese verständlich an ihre Mitarbeiter zu kommunizieren. Ergebnisse. Die Datenerhebung erfolgt mittels Pretest-Posttest Design in zwei Unternehmen (T1 ca. 1 Woche vor und T2 ca. 6 Wochen nach dem Training), wobei zu beiden Zeitpunkten die direkt unterstellten Mitarbeiter der Teilnehmer befragt werden. Die Datenerhebung endet im Sommer 2017. Es wird erwartet, dass die Führungskräfte nach dem Training ihre Erwartungen an ihre Mitarbeiter kommunizieren. Diese können dadurch besser einschätzen, was von ihnen erwartet wird und sind zufriedener mit der beruflichen IKT-Kommunikation. Limitationen. Die Teilnahme am Training íst freiwillig und es liegt keine Kontrollgruppe vor. Daher ist die interne Validität eingeschränkt. Theoretische/Praktische Implikationen. Die Studie verdeutlicht den Einfluss der Führungskraft für den Umgang mit IKT im beruflichen Kontext. Das Training stellt eine praxisnahe Möglichkeit dar, Führungskräfte im Umgang mit IKT zu sensibilisieren und in ihrer Aufgabe der gesundheitsförderlichen Führung zu stärken. Relevanz/Beitrag. Insbesondere im Kontext der beruflichen IKT-Nutzung liegen bisher nur wenige Trainingskonzepte vor, die zumeist auf individuelle Einflussmöglichkeiten fokussieren.
Hybrid Intelligence DSS for Business Model Innovation.Dellermann, Dominik. In Academy of Management Annual Meeting, TIM Doctoral Research Development Workshop. Atlanta, Georgia, USA, 2017.
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Plattform-Loyalität in der Cloud.Dellermann, Dominik; Jud, Christopher; Reck, Fabian. In HMD Praxis der Wirtschaftsinformatik. Springer Fachmedien Wiesbaden, 2017.
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Is ICT use the cause or result of reduced detachment? Investigating reversed causality in a diary study with a cross-lagged panel design.Heissler, Clara; Ohly, Sandra. In Proceedings of the 18th EAWOP Congress 2017 - Enabling Change through Work and Organizational Psychology, p. 610. 2017.
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Purpose: Studies on the risks of work-related ICT use after hours often emphasize detrimental effects on detachment. The reversed causal effect – insufficient detachment leading to work-related ICT use – has not yet been examined. However, research would benefit from investigating bidirectional or reversed relationships to broaden our understanding of causes and risks of work-related ICT use during leisure time. Design/Methodology: Using a daily diary study design, data were collected from 134 German knowledge workers who completed three daily surveys during evening hours of 5 consecutive work days. Participants provided information on duration and intensity of work-related ICT use after work as well as their level of detachment on the second and third survey ensuring a cross-lagged panel design for each day. Results: Regression analysis supports the notion that failing to properly detach from work can lead to subsequent work-related ICT use. Limitations: The present study measured all constructs using self-reports and did not consider work-related ICT use on weekends/ during vacation. Research/Practical Implications: Considering the results future diary studies on ICT use and detachment should be mindful of bidirectional effects and investigate factors that moderate directionality between those variables Originality/Value: Using a diary study with a cross-lagged panel design this study discards the assumption that insufficient detachment is invariably the result of work-related ICT use and provides evidence for reversed causality. The short time lag reveals the dynamic between detachment and ICT within evenings.
Lost Energy? Managing Co-Innovation Risk of Digital Business Models.Dellermann, Dominik; Fliaster, Alexander; Kolloch, Michael. In Journal of Business Strategy. 2017.
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Understanding Platform Loyalty in the Cloud: A Configurational View on ISV’s Costs and Benefits.Dellermann, Dominik; Jud, Christopher; Reck, Fabian. In 13th International Conference on Wirtschaftsinformatik (WI). St. Gallen, Switzerland, 2017.
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Managing disruptive innovation through service systems - Crowdlending in the banking industry.Blohm, Ivo; Haas, Philipp; Peters, Christoph; Jakob, Thomas; Leimeister, Jan Marco. In Case Center, 317-0281-1. 2017.
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The Internet has affected and partially radically changed the business models of traditional industries. Crowdfunding as a new concept of funding over the Internet by a large crowd has especially gained maturity. Crowdfunding offerings range from funding charitable projects or innovative gadgets to a funding alternative for start-ups or small businesses. Therefore, crowdfunding represents an innovative way to provide liquidity for illiquid markets. With regard to the banking crisis and the growing skepticism toward banks, crowdfunding is seen as a more transparent, democratic, and entertaining way of funding, which makes it highly attractive for banks. A senior innovation manager of The Bank of Switzerland (TBOS), one of Switzerland's largest and most traditional banks, recognized the disruptive and beneficial potential of crowdlending. By facing strong resentments, he developed the idea of TBOS engaging in crowdlending by collaborating with a start-up by bundling competencies in a service system.

2016[ to top ]

Increasing Learner Interaction in Large-Scale Lectures by Using a Mobile-Learning Application.Lehmann, Katja; Söllner, Matthias; Leimeister, Jan Marco. In Mobile and Blended Learning Innovations for Improved Learning Outcomes, D. Parsons (ed.). IGI Global, Hershey, PA, 2016.
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Is There PAPA in Crowd Work? - A Literature Review on Ethical Dimensions in Crowdsourcing.Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In The IEEE International Conference on Internet of People. Toulouse, France, 2016.
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Crowd Work.Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE), 58(4), pp. 281–286. 2016.
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Principal Forms of Crowdsourcing and Crowd Work.Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In The Digital Economy And The Single Market - Employment Prospects And Working Conditions in Europe, Vol. FEPS - Foundation for European Progressive Studies, W. Wobbe, E. Bova, C. Dragomirescu-Gaina (eds.), pp. 39–55. 2016.
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Erweiterte Informationspflichten in der DSGVO: Änderungen für die Unternehmen.Marschall, Kevin. In Datenschutz-Berater, pp. 230–232. 2016.
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When is Crowdsourcing Advantageous? The Case of Crowdsourced Software Testing.Leicht, Niklas; Knop, Nicolas; Blohm, Ivo; Müller-Bloch, Christoph; Leimeister, Jan Marco. In European Conference on Information Systems (ECIS 2016). Istanbul, Turkey, 2016.
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How Many Peer Assessors are Required for Assessment on Another Peer’s Work?Lehmann, Katja; Söllner, Matthias; Blohm, Ivo; Leimeister, Jan Marco. In Academy of Management Annual Meeting (AOM) - PDW ‘Management Education and Learning Writers Workshop’. Anaheim, CA, United States, 2016.
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Design and Evaluation of an IT-based Peer Assessment to Increase Learner Performance in Large-Scale Lectures.Lehmann, Katja; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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From Requirement to Design Patterns for Ubiquitous Computing Applications.Knote, Robin; Baraki, Harun; Söllner, Matthias; Geihs, Kurt; Leimeister, Jan Marco. In 21st European Conference on Pattern Languages of Programs (EuroPlop ’16). Kaufbeuren, Germany, 2016.
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Ubiquitous Computing describes a concept where computing appears around us at any time and any location. Respective systems rely on context-sensitivity and adaptability. This means that they constantly collect data of the user and his context to adapt its functionalities to certain situations. Hence, the development of Ubiquitous Computing systems is not only a technical issue and must be considered from a privacy, legal and usability perspective, too. This indicates a need for several experts from different disciplines to participate in the development process, mentioning requirements and evaluating design alternatives. In order to capture the knowledge of these interdisciplinary teams to make it reusable for similar problems, a pattern logic can be applied. In the early phase of a development project, requirement patterns are used to describe recurring requirements for similar problems, whereas in a more advanced development phase, design patterns are deployed to find a suitable design for recurring requirements. However, existing literature does not give sufficient insights on how both concepts are related and how the process of deriving design patterns from requirements (patterns) appears in practice. In our work, we give insights on how trust-related requirements for Ubiquitous Computing applications evolve to interdisciplinary design patterns. We elaborate on a six-step process using an example requirement pattern. With this contribution, we shed light on the relation of interdisciplinary requirement and design patterns and provide experienced practitioners and scholars regarding UC application development a way for systematic and effective pattern utilization.
Sequential Modeling and Structural Anomaly Analytics in Industrial Production Environments.Atzmueller, Martin; Schmidt, Andreas; Arnu, David. In Proc. LWA 2016 (KDML Special Track). University of Potsdam, Potsdam, Germany, 2016.
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Rags to Riches - How signaling behaviour causes a power shift in crowdsourcing markets.Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In European Conference on Information Systems (ECIS). Istanbul, Turkey, 2016.
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Demokratie zwischen Öffentlichkeit und Privatheit.Geminn, Christian. In Verwaltungsarchiv, 107, pp. 601–630. 2016.
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Digitale Service-Systeme.Li, Mahei Manhai; Peters, Christoph; Leimeister, Jan Marco. In Digitale Transformation im Unternehmen gestalten, O. Gassmann, P. Sutter (eds.), pp. 29–38. Carl Hanser Verlag, München, 2016.
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Managing Disruptive Innovation through Service Systems – The Case of Crowdlending in the Banking Industry.Blohm, Ivo; Haas, Philipp; Peters, Christoph; Jakob, Thomas; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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Empirische Evaluation von Steuerungsarten für Flugroboter.Herrmann, R.; Hegenberg, J.; Ziegner, D.; Schmidt, L. In Arbeit in komplexen Systemen - Digital, vernetzt, human?! 62. Kongress der Gesellschaft für Arbeitswissenschaft (Aachen 2016), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (A.4.9). GfA-Press, Dortmund, 2016.
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Flugroboter werden immer mehr im industriellen Bereich eingesetzt. Einsatzfelder sind dabei z. B. Inspektionen von schwer zugänglichen Bereichen oder die automatisierte Durchführung von Inventuren in Großlagern. Für die Steuerung solcher Flugroboter steht zumeist eine klassische Remote Control (RC) zur Verfügung, mit der die Freiheitsgrade des Flugroboters über zwei Joysticks gesteuert werden können. Eine solche Steuerung neben der eigentlichen Arbeitsaufgabe zu beherrschen ist für ungeübte Personen nahezu unmöglich. Auf der anderen Seite bietet eine Gestensteuerung eine intuitive und leicht erlernbare Möglichkeit Roboter zu steuern, die natürliche menschliche Kommunikations- und Handlungsweisen berücksichtigt. Daher wurde eine auf Gesten basierende Steuerung für Flugroboter entworfen, die als Ersatz für eine RC dienen kann. Dieser Beitrag stellt das methodische Vorgehen und die Ergebnisse einer nutzerbasierten Evaluation dar, in der Probanden mit einer RC und der entworfenen Gestensteuerung einfache Flugaufgaben lösen sollten. Ziel war insbesondere die Beurteilung der Gebrauchstauglichkeit und der Intuitivität der beiden Steuerungen.
Freie Arbeitszeiteinteilung von Wissensarbeitern – Selbstbestimmung oder Ausbeutung?Maier, Natalie. In Der Betrieb, (46), pp. 2723–2728. 2016.
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The Thrill and the Agony of Digital Ecosystems: A Complementor´s Perspective on Co-Innovation Risk.Dellermann, Dominik. In 10th Ratio Colloquium for Young Social Scientists Organizing for Digitalization (RCYSS). Stockholm, Sweden, 2016.
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Smart Technologies – Workshop on Challenges and Trends for Privacy in a Hyper-connected World.A., Baur-Ahrens; Bieker, F.; Friedewald, M.; Geminn, C.; Hansen, M.; Karaboga, M.; Obersteller, H. In Privacy and Identity Management. Time for a Revolution?, Vol. 476, A. David, C. Jan, H. Marit, S. Fischer-Hübner, C. Raab (eds.), pp. 111–128. 10th IFIP WG 9.2, 9.5, 9.6/11.7, 11.4, 11.6/SIG 9.2.2 International Summer School, Edinburgh, UK, August 16-21, 2015, Revised Selected Papers, IFIP Advances in Information and Communication Technology, Dordrecht: Springer, 2016.
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Evaluation des Leitstands eines Boden-Luft-Servicerobotiksystems für eine Produktionsumgebung.Herrmann, R.; Hegenberg, J.; Schmidt, L. In Useware 2016: Mensch-Technik-Interaktion im Industrie 4.0 Zeitalter (Dresden 2016), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 187–199. VDI-Verlag, Düsseldorf, 2016.
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Für ein Servicerobotiksystem, welches teilautonom Arbeitsumgebungsfaktoren aufzeichnet sowie Ultraschall- und Thermografiemessungen durchführt, wurde ein mobiler Leitstand konzipiert und realisiert. Der Leitstand besteht aus einem mobilen verstellbaren Montage- und Bildschirmarbeitsplatz für die praktische Vorbereitung, Planung, Überwachung und Dokumentation des Robotereinsatzes sowie einer Datenbrille für die Teleoperation eines Flugroboters. Um die Gebrauchstauglichkeit der Benutzungsschnittstelle des Bildschirmarbeitsplatzes zu evaluieren, wurde eine Untersuchung mit Anwendern in der Produktionsumgebung eines Automobilherstellers durchgeführt. Um die Gebrauchstauglichkeit der Assistenzfunktionen bei der Teleoperation von Flugrobotern zu evaluieren, wurde des Weiteren eine Untersuchung zur Darstellung von Warnmeldungen in Datenbrillen bei einer realen Flugaufgabe durchgeführt. Die Ergebnisse zeigen Verbesserungsmöglichkeiten für die Gestaltung der Benutzungsschnittstelle auf und geben Gestaltungshinweise für die Darstellung von Warnmeldungen in Datenbrillen.
Empirischer Vergleich der Ablenkung der visuellen Aufmerksamkeit von einer Konzentrationsaufgabe durch Benachrichtigungen auf Smartwatch und Smartphone.Kniewel, R.; Schmidt, L. In Useware 2016: Mensch-Technik-Interaktion im Industrie 4.0 Zeitalter (Dresden 2016), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 53–63. VDI-Verlag, Düsseldorf, 2016.
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Benachrichtigungen auf mobilen Endgeräten sind ein Auslöser für die Ablenkung der visuellen Aufmerksamkeit weg von einer aktuell bearbeiteten Aufgabe hin zum Endgerät. Die zunehmende Verbreitung von Smartwatches, die von Herstellern als weniger ablenkend als Smartphones beworben werden und mittels Benachrichtigungen als zentraler Interface-Komponente agieren, lässt die Frage aufkommen, ob Benachrichtigungen auf Smartwatches eine geringere visuelle Ablenkung verursachen als Benachrichtigungen auf Smartphones und worin die Unterschiede bestehen. Dieser Beitrag beschreibt eine empirische Untersuchung mit 40 Probanden, die in vier Doppelaufgabensituationen jeweils hauptsächlich die gleiche Konzentrationsaufgabe zu bearbeiten hatten und nebenbei 12 eingehende Benachrichtigungen lesen und sich bestimmte Informationen merken sollten. Die unabhängigen Variablen waren das Endgerät (Smartphone oder Smartwatch) und die Platzierung des Endgeräts (natürliche oder auf Stativ fixiert). Es wurden objektive Leistungsparameter in der Haupt- und Nebenaufgabe sowie subjektive Parameter, wie die wahrgenommene Ablenkungswirkung der Nebenaufgabe, die Konzentrationsfähigkeit auf die Hauptaufgabe und die wahrgenommene Beanspruchung der Doppelaufgabe erhoben. Auch wurden Blickbewegungen erfasst. Die Erkenntnis dieser Studie ist, dass die Smartwatch-Interaktion im Gegensatz zur Smartphone-Interaktion Vorteile aufweist. Die Leistung in der Hauptaufgabe wurde signifikant weniger negativ beeinflusst. Ebenso wurde sie weniger beanspruchend und weniger ablenkend wahrgenommen.
Mastering Shakedown Through The User: The Need for User-Generated Services In Techno Change.Li, Mahei Manhai; Peters, Christoph. In European Conference on Information Systems (ECIS). Istanbul, Turkey, 2016.
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Design Principles for High-Performance Blended Learning Services Delivery - The Case of Software Trainings in Germany.Bitzer, Philipp; Söllner, Matthias; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE), 58(2), pp. 135–149 (DOI: 10.1007/s12599. 2016.
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The “perfect” orchestration of training participants, IT and process design is one of the ongoing challenges within blended learning service research and practice. Blended learning services (BLS) offer a great variety of options to design learning processes, overcoming many shortcomings of pure e-learning services and providing better scalability and more advantages for learners than pure face-to-face class teaching. Nevertheless, due to inconclusive results of blended learning design research in the literature, BLS designers can hardly find support for the systematic design of efficient and successful blended learning processes, which would enable a high degree of learning success with a balanced degree of delivery effort. Based on major determinants of BLS processes’ quality, the authors identify, develop, and evaluate design principles for high performance BLS using an action design research approach. They first derive a set of initial design principles, based on insights from literature and own exploratory case studies as well as workshops with experts from the field. They then improve the design principles iteratively in expert workshops as well as apply the design principles in four software training sessions. Finally, they present seven evaluated design principles for BLS, which are the core of a nascent design theory and contribute to a time-efficient and successful BLS delivery. Furthermore, these principles enable practitioners to systematically apply the design knowledge formalized within the principles in order to improve BLS design and delivery.
How to Systematically Conduct Crowdsourced Software Testing? Insights from an Action Research Project.Leicht, Niklas; Blohm, Ivo; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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A Phone Worth Keeping for the Next 6 Billion? Exploring the Creation of a Modular Smartphone Made by Google.Laser, Stefan. In Müll. Interdisziplinäre Perspektiven auf das Übrig-Gebliebene, C. Lewe, T. Orthold, N. Oxen (eds.). transcript, Bielefeld, 2016.
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Arbeitshilfe zur Datenschutz-Grundverordnung – Synopse der deutschen Übersetzung der DSGVO in der Entwurfsfassung vom 28. Januar 2016 zur verkündeten Fassung. Barlag, Charlotte; Blazy, Stephan; Geminn, Christian; Hofmann, Johanna; Hohmann, Carolin; Hoidn, Dominik; Jandt, Silke; Johannes, Paul C.; Laubach, Anne; Maier, Natalie; Marschall, Kevin; Müller, Johannes; Nebel, Maxi; Ossoinig, Verena; Richter, Philipp; Schaller, Fabian; Weinhold, Robert. A. Roßnagel (ed.). ITeG Technical Reports, Kassel, 2016.
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Repression, Konstitution und Transformation: Das Politische als Neuversammlung gesellschaftlicher Macht.Lamla, Jörn. In Soziologische Revue, 39(1), pp. 41–59. 2016.
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Evaluation einer Armband-Steuerung für einen Bodenroboter.Herrmann, R.; Schmidt, L. In Virtuelle und Erweiterte Realität: 13. Workshop der GI-Fachgruppe VR/AR (Bielefeld 2016), T. Pfeiffer, J. Fröhlich, R. Kruse (eds.), pp. 53–64. Shaker, Aachen, 2016.
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Der technologische Fortschritt ermöglicht die Verwendung einer Freihandgestensteuerung in alltäglichen und industriellen Szenarien. Eine neue Möglichkeit Freihandgesten zu erkennen, ist die Verwendung eines bewegungserkennenden Armbandes. Trotz kritischer Anmerkungen hinsichtlich der Gebrauchstauglichkeit von Gesten versprechen sich Forscher von der Verwendung eines Armbandes zur Gestenerkennung u. a. groe Potentiale in der Mensch-Roboter-Interaktion. Grund hierfür ist die aus Anwendersicht einfache und intuitive Verwendung eines Armbandes im Gegensatz zu anderen Verfahren zur Gestenerkennung und die dadurch mögliche Steigerung der Gebrauchstauglichkeit. Inwieweit die Verwendung eines bewegungserkennenden Armbandes für die gestische Teleoperation eines Bodenroboters geeignet ist, wird anhand eines Versuchs mit 23 Teilnehmern ermittelt. Hierfür wurde eine Gestensprache für die Navigation eines Bodenroboters entworfen, bei der die Charakteristiken einer Virtual- oder Augmented-Reality-gestützten Teleoperation berüucksichtigt wurden. Die Erkennung der Gesten wurde mittels eines Armbandes unter Verwendung integrierter Ober flächenelektromyographie (OEMG) und Accelerometer realisiert. Die Ergebnisse zeigen signifikant schlechtere Eigenschaften hinsichtlich Gestenerkennungsraten und Gestenausführungszeiten gegenüber einer marker- und kamerabasierten Lösung. Insbesondere die mit dem Armband realisierte Methode des OEMG zeigt in der Kombination mit der entworfenen Gestensprache deutliche Defizite hinsichtlich der Erkennung der Gesten. Allerdings können hinsichtlich der Intuitivität positive Aspekte aufgezeigt werden.
Can you use innovative technology to reduce ICT demands? Managing smartphone-accessibility with implicit communication.Heißler, Clara; Schmitt, Antje; Maier, Natalie; Ossoinig, Verena; Wojtek, Sebastian; Ohly, Sandra; David, Klaus. In Vortrag bei der 50. Tagung der Deutschen Gesellschaft für Psychologie (DGPS). 2016.
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Lifelong Learning and Collaboration of Smart Technical Systems in Open-Ended Environments – Opportunistic Collaborative Interactive Learning.Bahle, Gernot; Calma, Adrian; Leimeister, Jan Marco; Lukowicz, Paul; Oeste-Reiß, Sarah; Reitmaier, Tobias; Schmidt, Albrecht; Sick, Bernhard; Stumme, Gerd; Zweig, Katharina. In International Conference on Autonomic Computing. Würzburg, Germany, 2016.
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The Risks of Digital Innovation: An Ecosystem Perspective.Fliaster, Alexander; Dellermann, Dominik. In Workshop Organizing for Digital Innovation. Amsterdam, The Netherlands, 2016.
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Gestaltungsempfehlungen für eine Reisebegleiter-App zur Berücksichtigung der Aufmerksamkeit.Kniewel, R.; Schmidt, L. In Arbeit in komplexen Systemen - Digital, vernetzt, human?! 62. Kongress der Gesellschaft für Arbeitswissenschaft (Aachen 2016), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.5.3). GfA-Press, Dortmund, 2016.
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In einem Nutzertest mit zwanzig Smartphone-erfahrenen Personen wurde eine prototypisch entwickelte Reisebegleiter-App für Großveranstaltungen im Feld evaluiert. Die Befragungsergebnisse zeigen, dass die Verwendung einer solchen App zur Assistenz von touristischen Aktivitäten zu Konflikten in der Aufmerksamkeitszuwendung führen kann. Auf Basis des Prototyp-Designs und der damit erzielten Ergebnisse werden Gestaltungsempfehlungen für das die Aufmerksamkeit berücksichtigende Design von Reisebegleiter-Apps formuliert.
Organizational availability demands and work-life balance: the role of detachment and length of information and communication technology (ICT) use.Heißler, Clara; Schmitt, Antje; Ohly, Sandra. In Proceedings of the 12th European Academy of Occupational Health Psychology Conference: OHP in Times of Change: Society and the workplace, K. Teoh, V. Dediu, N. J. Saade, J. Hassard (eds.), p. 134. 2016.
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Cryptanalysis of the Columnar Transposition Cipher with Long Keys.Lasry, George; Kopal, Nils; Wacker, Arno. In Cryptologia, pp. 1–25. 2016.
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The classical columnar transposition cipher was the most popular type of transposition cipher. It was in use mainly during the second half of the nineteenth century and the first half of the twentieth century. It also served as a building block for more complex ciphers, such as the ADFGVX cipher and the double transposition cipher. Pen-and-paper as well as computerized methods for the cryptanalysis of the columnar transposition cipher have been published, but those apply mainly to the easier cases of short keys and complete transposition rectangles. In this article, a novel approach for the cryptanalysis of the columnar transposition cipher (when used with long keys) is presented. It is based on a two-phase hill climbing algorithm, a two-dimensional fitness score, and special transformations on key segments. This ciphertext-only method allows for the recovery of transposition keys with up to 1,000 elements, and up to 120 elements for worst case transposition rectangles.
Advances in Exploratory Pattern Analytics on Ubiquitous Data and Social Media.Atzmueller, Martin. In Solving Large Scale Learning Tasks: Challenges and Algorithms. Festschrift in Honour of Prof. Dr. Katharina Morik, Vol. 9580, S. Michaelis, N. Piatkowski, M. Stolpe (eds.). Springer Verlag, 2016.
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Rechtssicherheit für WLAN-Anbieter? Das EuGH-Urteil zur Haftung beim Betrieb eines offenen WLANs und § 8 Abs. 3 TMG auf dem Prüfstand.Grigorjew, Olga. In Kommunikation & Recht, pp. 701–706. 2016.
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HypGraphs: An Approach for Modeling and Comparing Graph-Based and Sequential Hypotheses.Atzmueller, Martin; Schmidt, Andreas; Kloepper, Benjamin; Arnu, David. In Proc. ECML-PKDD Workshop on New Frontiers in Mining Complex Patterns (NFMCP). Riva del Garda, Italy, 2016.
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Analyzing Group Interaction and Dynamics on Socio-Behavioral Networks of Face-to-Face Proximity.Atzmueller, Martin; Thiele, Lisa; Stumme, Gerd; Kauffeld, Simone. In Proc. ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication, of UbiComp ’16 Adjunct. ACM Press, New York, NY, USA, 2016.
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Konsekrationsinstanzen im digitalen Wandel. Beiträge zur Erweiterung des feldanalytischen Forschungsprogramms am Beispiel populärer Musik.Kropf, Jonathan. In Berliner Journal für Soziologie, 25(4), pp. 429–458. 2016.
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Einleitung.Hornung, Gerrit; Engemann, Christian. In Der digitale Bürger und seine Identität, G. Hornung, C. Engemann (eds.), pp. 11–21. Nomos Verlagsgesellschaft, Baden-Baden, 2016.
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Der digitale Bürger und seine Identität. Hornung, Gerrit; Engemann, Christoph. Nomos Verlagsgesellschaft, Baden-Baden, 2016.
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Can the Crowd Do the Job? Exploring the Effects of Integrating Customers into a Company’s Business Model Innovation International Journal of Innovation Management.Ebel, Philipp; Bretschneider, Ulrich; Leimeister, Jan Marco. In International Journal of Innovation Management (IJIM), Online First. 2016.
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Implicit Positioning Using Compass Sensor Data.Kroll, Dennis; Kusber, Rico; David, Klaus. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct, of UbiComp ’16, pp. 732–741. ACM, Heidelberg, Germany, 2016.
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In this paper, we present Implicit Positioning -- an approach to recognize the indoor area where a person is, such as a specific corridor or corner. Implicit Positioning adapts to its user by automatically finding, learning, and recognizing patterns in data from a smartphone's compass sensor. These patterns model characteristics of the areas the person walked through, such as the direction the person headed, and can be understood as Implicit Positions. Implicit Positioning neither relies on user feedback nor on additional infrastructure, digital maps or war-driving. All the person needs to do is carry a smartphone. To evaluate our approach, we collected data from smartphones carried by a test person in different positions. The test person covered a distance of 17.4 km in two different buildings. When taking a path for the second time, patterns were already being correctly recognized with an accuracy of up to 87.8%.
Description-Oriented Community Detection using Exhaustive Subgroup Discovery.Atzmueller, Martin; Doerfel, Stephan; Mitzlaff, Folke. In Information Sciences, 329, pp. 965–984. 2016.
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Get the Balance Right: Can Normative Appeals Encourage Funders to Support Selected Crowdfunding Campaigns?Lipusch, Nikolaus; Bretschneider, Ulrich. In European Conference on Information Systems (ECIS). Istanbul, Turkey, 2016.
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Leveraging Virtual Business Model Innovation: A Framework for Designing New Business Model Development Tools.Ebel, Philipp; Bretschneider, Ulrich; Leimeister, Jan Marco. In Information Systems Journal (ISJ), Online First. 2016.
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The Impact of Controversies on the Evolution of Innovation Ecosystems: Findings from the Energy Industry.Dellermann, Dominik; Kolloch, Michael. In R&D Management Conference. Cambridge, United Kingdom, 2016.
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Das Smart Home als Herausforderung für das Datenschutzrecht. Enthält die Datenschutz-Grundverordnung risikoadäquate Regelungen?Geminn, Christian. In Datenschutz und Datensicherheit, pp. 575–580. 2016.
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Cyborgs im Gesundheitswesen: Verfassungs- und sozialrechtliche Implikationen von IT-Enhancement.Hornung, Gerrit; Sixt, Manuela. In IT-Entwicklungen im Gesundheitswesen: Herausforderungen und Chancen, I. Spiecker gen. Döhnmann, A. Wallrabenstein (eds.), pp. 119–152. Peter Lang, Frankfurt a.M., 2016.
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Sozialdatenschutz.Hornung, Gerrit; Seidel, Knut. In Sozialverwaltungsverfahrensrecht. Handbuch, Second, , W. Fichte, H. Plagemann (eds.), pp. 393–421. Nomos Verlagsgesellschaft, Baden-Baden, 2016.
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BISHOP – Big Data Driven Self-Learning Support for High-performance Ontology Population.Knoell, Daniel; Atzmueller, Martin; Rieder, Constantin; Scherer, Klaus Peter. In Proc. LWA 2016 (FGWM Special Track). University of Potsdam, Potsdam, Germany, 2016.
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Deciphering ADFGVX Messages from World War I Eastern Front.Lasry, George; Niebel, Ingo; Kopal, Nils; Wacker, Arno. In Cryptologia, pp. 1–36. 2016.
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In the last months of World War I (WW I), the German Army and diplomatic services used the ADFGVX hand-cipher system to encrypt radio messages between Germany and its outposts and stations in the Balkans, the Black Sea, and in the Middle East. Hundreds of cryptograms were intercepted from July to December 1918 by British and U.S. military intelligence, who were able to recover most of the keys and decipher most of the cryptograms using manual cryptanalysis methods. Fortunately, the original cryptograms have been preserved by James Rives Childs, the U.S. officer assigned to G.2 A.6, the SIGINT section of American Expeditionary Forces (AEF) in Paris, and they appear in his book, General Solution of the ADFGVX Cipher System, published by Aegean Press Park in 2000. In this article, the authors present the results of an effort toward the complete cryptanalysis of the messages, and an analysis of their contents. The authors present a new computerized method for the ciphertext-only cryptanalysis of ADFGVX messages which they developed for that purpose. They also provide details on how all the keys were recovered and almost all the messages decrypted, despite the low quality of significant parts of the intercepted material. The analysis of the messages in their historical context provides a unique insight into key events, such as the withdrawal of the German troops from Romania, and the impact of the Kiel Mutiny on communications. Both events had major political and military consequences for Germany in the Eastern Front. Cryptanalysis allowed the Entente Powers to closely monitor those events as well as others developments, also highlighting inherent weaknesses in German cryptographic and cryptanalytic capabilities. The authors plan to publish online all the decrypted messages.
Motivation for Open Innovation and Crowdsourcing: Why Does the Crowd Engage in Virtual Ideas Communities?Bretschneider, Ulrich; Leimeister, Jan Marco. In Open Tourism: Open Innovation, Crowdsourcing and Co-Creation Challenging the Tourism Industry, R. Egger, I. Gula, D. Walcher (eds.), pp. 109–120. Springer Berlin Heidelberg, 2016.
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Rechtliche Perspektiven des Identitätsmanagements in Europa.Hornung, Gerrit. In Der digitale Bürger und seine Identität, G. Hornung, C. Engemann (eds.), pp. 153–185. Nomos Verlagsgesellschaft, Baden-Baden, 2016.
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Pokémon, Augmented Reality und die Verschleierung von Positionsdaten.Johannes, Paul C. In ZD-Aktuell, (05321). 2016.
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Unpopuläre E-Mail-Verschlüsselung: Auflösung des Henne-Ei-Problems.Esslinger, B.; Schmidt, L.; Strenge, B.; Wacker, A. In Datenschutz und Datensicherheit, 40(5), pp. 283–289. 2016.
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E-Mail-Verschlüsselung könnte längst flächendeckend Verwendung finden. Der Beitrag gibt eine Antwort auf die Frage, warum dies nicht der Fall ist - und macht Vorschläge, was getan werden sollte, um dies zu ändern.
Erster Referentenentwurf des BMI für ein Ausführungsgesetz zur DS-GVO nach heftiger Kritik zurückgenommen.Johannes, Paul C. In ZD-Aktuell, (05322). 2016.
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Persistent Work-related Technology Use, Recovery and Well-being Processes: Focus on Supplemental Work after Hours. Ďuranová, Lenka; Ohly, Sandra. Springer International Publishing, ISBN: 978-3-319-24757-1, 2016.
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The aim of this work is to provide insight into the process of employee recovery and well-being in regard to work-related ICT use during after-hours. Therefore, we discuss (1) theories that help us to understand the determinants and outcomes of this behavior, (2) our core concepts recovery and well-being, and (3) previous empirical findings on ICT use after hours for work purposes. On the basis of literature review, we propose a new conceptual overall framework of ICT use after hours for work purposes with the focus on employee recovery and well-being processes. Thereby, we posit ICT use after hours for work purposes as potential stressor, resource, or demand (see action theory by Hacker, 1998, 2003; Frese and Zapf 1994), depending on many personal and environmental factors, but primarily on cognitive appraisals (see transactional model of stress by Lazarus and Folkman 1984). This three-way division enables us to propose various linear and non-linear associations to focused outcomes. We conclude with an overall discussion on further research concerning the identified research gaps.
Examining the mechanism of supervisory behavior.Ďuranová, Lenka; Schmitt, Antje; Braukmann, Johanna; Ohly, Sandra. In 31st Annual Conference of the Society for Industrial and Organizational Psychology (SIOP), Anaheim. 2016.
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Rechtliche Herausforderungen der Industrie 4.0.Hornung, Gerrit. In Industrie 4.0 als unternehmerische Gestaltungsaufgabe. Betriebswirtschaftliche, technische und rechtliche Herausforderungen, R. Obermaier (ed.), pp. 69–81. Springer Gabler, Wiesbaden, 2016.
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Elektronische Gerichtsakten – Neue Herausforderungen für die Tätigkeit des Sachverständigen.Jandt, Silke; Nebel, Maxi; Nielsen, Achim. In Der Sachverständige, pp. 248–254. 2016.
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Towards Vivid Ecosystems: Configuring Costs and Benefits via Design Choices.Dellermann, Dominik; Jud, Christopher. In Proceedings of the European Workshop on Software Ecosystems, K. M. Popp, P. Buxmann, T. A. Curran, G. Eichler, S. Jansen, T. Kude (eds.). Walldorf, Germany, 2016.
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Technology‐assisted supplemental work and sleep – role of mental effort after hours.Ďuranová, Lenka; Schmitt, Antje; Weigelt, Oliver; Braukmann, Johanna; Hoffmann, Katja; Ohly, Sandra. In Vortrag bei der 50. Tagung der Deutschen Gesellschaft für Psychologie (DGPS). 2016.
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Transparente Demokratie. Henning-Schulz, Maria. Nomos, Baden-Baden, 2016.
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Erfolgreiche Crowd Governance – Projektspezifische Steuerungs- und Kontrollmechanismen auf wettbewerbsbasierten Crowdsourcing-Plattformen.Ay, Güler; Zogaj, Shkodran; Bretschneider, Ulrich. In Working Paper Series, Nr. 15. Kassel, Germany, 2016.
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Nutzerzentrierte Entwicklung von mobilen Lernanwendungen für China.Ernst, Sissy-Josefina. In Mensch und Computer 2016, Doktorandenseminar. Aachen, Deutschland, 2016.
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It’s about Understanding Each Other’s Culture – Improving the Outcomes of Mobile Learning by Avoiding Culture Conflicts.Ernst, Sissy-Josefina; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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Why don´t they join? Analyzing the Nature and Consequences of Complementors´ Costs in Platform Ecosystems.Dellermann, Dominik; Jud, Christopher; Popp, Karl Michael. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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DASHTrails: An Approach for Modeling and Analysis of Distribution-Adapted Sequential Hypotheses and Trails.Atzmueller, Martin; Schmidt, Andreas; Kibanov, Mark. In Proc. WWW 2016 (Companion). IW3C2 / ACM, 2016.
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Cryptanalysis of Chaocipher and Solution of Exhibit 6.Lasry, George; Rubin, Moshe; Kopal, Nils; Wacker, Arno. In Cryptologia, pp. 1–28. 2016.
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Chaocipher is a manual encryption method designed by John F. Byrne in 1918. Until he passed away in 1960, Byrne fervently believed that his cipher system was unbreakable, regardless of the amount of material available to a cryptanalyst. For several decades, he tried (unsuccessfully), to propose the Chaocipher to government agencies. In 1953, he exposed his Chaocipher in his autobiography, Silent Years, providing several examples of texts encrypted with Chaocipher as challenges, but without divulging the inner workings of the cipher. Those were made public only in 2010, when Byrne’s family donated the entire corpus of Chaocipher papers to the National Cryptologic Museum (NCM) in Fort Meade. A known-plaintext method for recovering the key settings, given sufficient matching plaintext and ciphertext, was published in 2010. However, to date, no method for the cryptanalysis of a single ciphertext-only Chaocipher message has been proposed, nor for the cryptanalysis of short messages “in-depth,” i.e., multiple messages generated with the same initial key settings. In this article, the authors present a new hillclimbing algorithm for a ciphertext-only cryptanalysis of Chaocipher in-depth messages. This algorithm is based on a “divide-and-conquer” approach and the use of the Index of Coincidence. It takes advantage of a major weakness in the design of the cipher. This previously unknown weakness may have been the reason why William F. Friedman, the inventor of the Index of Coincidence, rejected Byrne’s offer for the use of Chaocipher by the U.S. government. Additionally, the authors present a known-plaintext attack for short in-depth messages, as well as the solution for Lou Kruh’s and Cipher Deavours’s alternate Exhibit 5, also known as “Exhibit 6.” Finally, the authors reevaluate the security of the Chaocipher in view of those findings, with the conclusion that in its classic form, as designed by Byrne, the Chaocipher was a relatively weak cipher, despite Byrne’s rather strong assertions to the contrary.
Exploring Strategies for Capturing Customer’s Tacit Knowledge in Customer Integration Methods.Bretschneider, Ulrich; Zogaj, Shkodran. In International Journal of Knowledge Management (IJKM), (2), pp. 1–19. 2016.
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Backer Empowerment in Crowdfunding: How Participation beyond Funding Influences Support Behavior.Lipusch, Nikolaus; Bretschneider, Ulrich; Leimeister, Jan Marco. In Pre-ICIS Workshop on the Digitization of the Individual (DOTI). Dublin, Ireland, 2016.
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IT-Kulturkonflikttheorie und ihre Bedeutung für erfolgreiches Service Systems Engineering - Fallstudie eines Einführungsprojektes für mobile Lernanwendungen in China.Ernst, Sissy-Josefina; Janson, Andreas; Li, Mahei; Peters, Christoph; Söllner, Matthias. In Multikonferenz Wirtschaftsinformatik (MKWI). Ilmenau, 2016.
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Mobiles Lernen ist eine Möglichkeit in Lernumgebungen, welche durch eine hohe Anzahl an Lernenden geprägt sind, praktische Trainings zu unterstützen. Bei der Einführung einer mobilen Lernanwendung in ein bestehendes Servicesystem sind die bestehenden Servicesystemkontexte zu berücksichtigen, da vorhandene Wertvorstellungen in Konflikt mit Werten, die dem neuen Service entgegengebracht werden, treten können. Um diesen Konflikten entgegenzutreten, werden im folgenden Beitrag unter Einbeziehen der IT-Kulturkonflikttheorie potentielle Systemkonflikte am Beispiel eines Einführungsprojekts einer mobilen Lernanwendung an chinesischen Berufsschulen identifiziert. Es wird aufgezeigt, wie die IT-Kulturkonflikttheorie bei der systematischen Gestaltung von Services von Nutzen sein kann und wie Services konform dem vorhandenen Servicesystem bereitgestellt werden können.
Does Friday work matter for the employee weekend? Relations between subjective performance, work-related technology use at home, and recovery.Ďuranová, Lenka; Weigelt, Oliver; Hoffmann, Katja; Ohly, Sandra. In Biennial Institute of Work Psychology (IWP) Conference, Sheffield. 2016.
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Preschoolers’ engagement in social interaction with an autonomous robotic system.Lücking, Phillip; Rohlfing, Katharina J.; Wrede, Britta; Schilling, Malte. In 2016 Joint IEEE International Conference on Development and Learning and Epigenetic Robotics (ICDL-EpiRob), pp. 210–216. IEEE, 2016.
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In this paper, we present an empirical study with children at the age of 4 and 5 years to reveal whether they engage with a robot in an interaction. For our analysis, we developed a score assessing the interaction level. It consists of emotional involvement, engagement and independence of the child in the interaction. For the interaction, an autonomous system was equipped with a designed dialogic structure. It consisted of a repertoire of (pre-recorded) interaction protocols that a robot can apply in an interaction. The results from the evaluation suggest that the implementation was successful as most of the studied children engaged in the interaction with the robot. The results also reveal some gender differences. The long-term aim of the study is to develop an autonomous system that can be applied in an interaction with young children.
Community Detection: From Plain to Attributed Complex Networks.Atzmueller, Martin. In Proc. ACM Web Science Conference. ACM Press, New York, NY, USA, 2016.
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An Empirical Taxonomy of Crowdsourcing Intermediaries.Leicht, Niklas; Durward, David; Haas, Philipp; Zogaj, Shkodran; Blohm, Ivo; Leimeister, Jan Marco. In Academy of Management Annual Meeting (AOM). Anaheim, California, 2016.
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Ausgangslage und Definitorisches.Gebauer, Lysann; Kunz, Michael; Hoberg, P.; Kroschwald, S.; Reidt, A.; Schneider, S.; Wicker, M.; Wollersheim, J. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 17–30. Springer Gabler, Wiesbaden, 2016.
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Big Data Analytics in the Social and Ubiquitous Context. Atzmueller, Martin; Chin, Alvin; Janssen, Frederik; Schweizer, Immanuel; Trattner, Christoph. In Vol. 9546 of Lecture Notes in Computer Science. Springer Verlag, Heidelberg, Germany, 2016.
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Vertrauensunterstützende Mehrwertdienste – Ein systematisches Vorgehen zur Förderung von Vertrauen im Cloud-Computing-Umfeld.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 171–185. Springer Gabler, Wiesbaden, 2016.
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Das neue japanische Datenschutzrecht – Reform des Act on the Protection of Personal Information.Geminn, Christian; Fuijwara, Shizuo. In Zeitschrift für Datenschutz, pp. 363–368. 2016.
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Marktunterstützung durch vertrauensunterstützende Dienste.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 351–357. Springer Gabler, Wiesbaden, 2016.
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Die Inhalte, die in diesen Kapitel berichtet werden, basieren auf den Publikarionen von Buch/Gebauer (2013). und Buch et al. (2014). Dieses Kapitel Präsentiert die Inhalte dieser beiden Publikationen in Verkürzter und zusammenfassender Form. Detaillierte Ergebnisse finden Sie in den Publikationen.
ICT-enabled service innovation in human-centered service systems: A systematic literature review.Kleinschmidt, Stefan; Peters, Christoph; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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From Active Learning to Dedicated Collaborative Interactive Learning.Calma, Adrian; Leimeister, Jan Marco; Lukowicz, Paul; Oeste-Reiß, Sarah; Reitmaier, Tobias; Schmidt, Albrecht; Sick, Bernhard; Stumme, Gerd; Zweig, Katharina Anna. In 4th International Workshop on Self-Optimisation in Autonomic and Organic Computing Systems (SAOS). Berlin, 2016.
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Big Data Analytics Using Local Exceptionality Detection.Atzmueller, Martin; Mollenhauer, Dennis; Schmidt, Andreas. In Enterprise Big Data Engineering, Analytics, and Management. IGI Global, Hershey, PA, USA, 2016.
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Do-It-Yourself Data Protection - Empowerment or Burden?Matzner, Tobias; Masir, Philip; Ochs, Carsten; von Pape, Thilo. In Data Protection on the Move. Current Developments in ICT and Privacy/Data Protection, S. Gutwirth, R. Leenes, P. De Hert (eds.), pp. 277–305. Springer, 2016.
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Vertrauensproblematiken im Cloud-Computing-Umfeld.Gebauer, Lysann; Söllner, Matthias; Söllner, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 59–69. Springer Gabler, Wiesbaden, 2016.
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Vier jahre in Folge war Cloud-Computing, gemäβ der jährlich durchgeführten BITKOM-Umfrage„IT Trends des Jahres˝, das wichtigste Thema in der IKT-Branche (BITKOM 2010,2011,2012,2013). Cloud-Computing wird gehandelt als „long-held dream of computing as a utility˝ (Armbrust et al.2010, S.50), der sich endlich bewahrheitet. Es bietet Unternehmen eine Lösung, um hohe Wartungskosten zu senken, die internen Enerfieverbrauch zu verringern sowie agiler auf geänderte Geschäftsanforderungen zu reagieren (IDC 2011).
Brexit im Datenschutz.Geminn, Christian; Schaller, Fabian. In ZD-Aktuell, (17). 2016.
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Sometimes You Win, Sometimes You Learn – Success Factors in Reward-Based Crowdfunding.Kunz, Michael Marcin; Englisch, Oliver; Beck, Jan; Bretschneider, Ulrich. In Multikonferenz Wirtschaftsinformatik (MKWI). Ilmenau, 2016.
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Zertifizierungen nach der DS-GVO.Hofmann, Johanna. In ZD-Aktuell, (05324). 2016.
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Woohoo TinkerBots! The Marketing Effect of Crowdfunding.Kunz, Michael Marcin; Bretschneider, Ulrich; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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Crowd Worker in Deutschland - Eine empirische Studie zum Arbeitsumfeld auf externen Crowdsourcing-Plattformen.Leimeister, Jan Marco; Durward, David; Zogaj, Shkodran. In Study der Hans-Böckler-Stiftung, Band 323, p. 86. 2016.
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Rate or Trade? Identifying Winning Ideas in Open Idea Sourcing.Blohm, Ivo; Riedl, Christoph; Füller, Johann; Leimeister, Jan Marco. In Information Systems Research, 27(1), pp. 27–48. 2016.
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Urteilsbesprechung von BGH, Urt. v. 19.03.2015, Az. I ZR 157/13 – Schufa-Hinweis.Hofmann, Johanna M. In Verbaucher und Recht, pp. 67–69. 2016.
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Vertrauensproblematiken im Cloud-Computing-Umfeld.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 59–69. Springer Gabler, Wiesbaden, 2016.
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Statusreport: Chancen mit Big Data -- Best Practice. Gebhardt, Jörg; Froese, Thomas; Krüger, Andreas; Appel, Jörg; Benner, Raphael; Hammer, Markus; Altermann, Alexandra; Hochrein, Thomas; Kugler, Christoph; Jatzkowski, Phillip; Gloy, Yves-Simon; Saggiomo, Marco; Roth, Rolf; Elixmann, Inga; Tapken, Heiko; Weber, Wolfgang; Atzmueller, Martin; Garcke, Jochen; Pielmeier, Julia; Rosen, Roland; Tercan, Hasan. VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik, 2016.
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Detecting Community Patterns Capturing Exceptional Link Trails.Atzmueller, Martin. In Proc. IEEE/ACM ASONAM. IEEE Press, Boston, MA, USA, 2016.
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Privacy-Arena: Ausstellung zum Projektabschluss.Geminn, Christian; Miedzianowski, Nadine. In ZD-Aktuell, (19). 2016.
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Entwurf des eIDAS-Durchführungsgesetzes in der Ressortabstimmung.Johannes, P. C. In ZD-Aktuell, (21), p. 05423. 2016.
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Systematisierung und Analyse von Crowdsourcing-Anbietern und Crowd-Work-Projekten.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David; Blohm, Ivo. In Study der Hans-Böckler-Stiftung, Band 324, p. 106. 2016.
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New Forms of Employment and IT: Crowdsourcing.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David. In Bulletin of Comparative Labour Relations Series, Vol. New Forms of Employment in Europe, R. Blanpain, F. Hendrickx, B. Waas (eds.), pp. 23–41. Kluwer Law International BV, The Netherlands, 2016.
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Nachhaltiger Konsum im transnationalen Wertschöpfungskollektiv. Versammlungsdynamiken in der Politischen Ökonomie des Elektroschrotts.Lamla, Jörn; Laser, Stefan. In Berliner Journal für Soziologie, 26(2), pp. 249–271. 2016.
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User Intervention in Self-adaptive Context-aware Applications.Geihs, Kurt; Evers, Christoph. In Proceedings of the Australasian Computer Science Week Multiconference, of ACSW ’16, pp. 51:1–51:8. ACM, Canberra, Australia, 2016.
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Towards design principles for aligning human-centered service systems and corresponding business models.Kleinschmidt, Stefan; Burkhard, Barbara; Hess, Manuel; Peters, Christoph; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Dublin, Ireland, 2016.
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Defining Software Architectures for Big Data Enabled Operator Support Systems.Klöpper, Benjamin; Dix, Marcel; Schorer, Lukas; Ampofo, Ann; Atzmueller, Martin; Arnu, David; Klinkenberg, Ralf. In Proc. IEEE International Conference on Industrial Informatics (INDIN). IEEE Press, Boston, MA, USA, 2016.
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Crowdfund your City: Empirische Studie zum Einsatz des Crowdfundings als Finanzierungsinstrument für Städte, Länder und Kommunen.Kunz, Michael Marcin; Ruth, Lukas; Bretschneider, Ulrich. In 78. Jahrestagung des VHB. München, 2016.
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Assessment of Social Roles for Interruption Management: A New Concept in the Field of Interruptibility.Anderson, Christoph; Heissler, Clara; Ohly, Sandra; David, Klaus. In Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct, of UbiComp ’16, pp. 1530–1535. ACM, Heidelberg, Germany, 2016.
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Determining and identifying opportune moments for interruptions is a challenging task in Ubiquitous Computing and Human-Computer-Interaction. The current state-of-the-art approaches do this by identifying breakpoints either in user tasks, activities or by processing social relationships and contents of interruptions. However, from a psychological perspective, not all of these breakpoints represent opportune moments for interruptions. In this paper, we propose a new concept in the field of interruptibility. The concept is based on role theory and psychological interruption research. In particular, we argue that social roles which define sets of norms, expectations, rules and behaviours can provide useful information about the user's current context that can be used to enhance interruption management systems. Based on this concept, we propose a prototype system architecture that uses social roles to detect opportune moments for interruptions.
Local Exceptionality Detection on Social Interaction Networks.Atzmueller, Martin. In Proc. ECML-PKDD 2016: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases. Springer Verlag, Heidelberg, Germany, 2016.
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Towards Autonomous Self-Tests at Runtime.Heck, Henner; Rudolph, Stefan; Gruhl, Christian; Wacker, Arno; Hähner, Jörg; Sick, Bernhard; Tomforde, Sven. In Foundations and Applications of Self* Systems, IEEE International Workshops on, pp. 98–99. IEEE, 2016.
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Evaluating Connection Resilience for Self-Organized Cyber-Physical Systems.Heck, Henner; Kieselmann, Olga; Wacker, Arno. In 2016 IEEE 10th International Conference on Self-Adaptive and Self-Organizing Systems (SASO 2016). IEEE Computer Society, 2016.
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Self-organizing cyber-physical systems are expected to become increasingly important in the context of Industry 4.0 automation as well as in everyday scenarios. Resilient communication is crucial for such systems. In general, this can be achieved with redundant communication paths. Mathematically, the amount of redundant paths is expressed with the network connectivity. A high network connectivity is required for collaboration and system-wide self-adaptation even when nodes fail or get compromised by an attacker. In this paper, we analyze the network connectivity of a communication network for large distributed cyber-physical systems. For this, we simulate the communication structure of a CPS with different network parameters to determine its resilience. With our results, we also deduce the required network connectivity for a given number of failing or compromised nodes.
Prüfpflichten von Hostprovidern als mittelbare Störer bei Bewertungen Dritter auf ihrem Internetportal.Miedzianowski, Nadine. In Verbraucher und Recht, 9, A. Roßnagel (ed.), pp. 354–359. 2016.
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Big Data Analytics for Proactive Industrial Decision Support: Approaches & First Experiences in the Context of the FEE Project.Atzmueller, Martin; Kloepper, Benjamin; Mawla, Hassan Al; Jäschke, Benjamin; Hollender, Martin; Graube, Markus; Arnu, David; Schmidt, Andreas; Heinze, Sebastian; Schorer, Lukas; Kroll, Andreas; Stumme, Gerd; Urbas, Leon. In atp edition, 58(9). 2016.
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Multi-k-resilience in distributed adaptive cyber-physical systems.Heck, Henner; Gruhl, Christian; Rudolph, Stefan; Wacker, Arno; Sick, Bernhard; Haehner, Joerg. In ARCS 2016; 29th International Conference on Architecture of Computing Systems; Proceedings of, pp. 1–8. VDE, 2016.
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Die Politik der Moderne(n).Lamla, Jörn. In Bruno Latours Existenzweisen. Einführung und Diskussion, H. Laux (ed.), pp. 79–94. Transcript, Bielefeld, 2016.
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Fast Exhaustive Subgroup Discovery with Numerical Target Concepts.Lemmerich, Florian; Atzmueller, Martin; Puppe, Frank. In Data Mining and Knowledge Discovery, 30, pp. 711–762. 2016.
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Towards Self-Tests in Distributed Cyber-Physical Systems.Heck, Henner. In Organic Computing – Doctoral Dissertation Colloquium, pp. 103–109. kassel university press, 2016.
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Within the industry 4.0 context and growing home and industrial automatisation in general, we expect cyber-physical systems to grow both in number and applied scenarios. Many of these scenarios are bound to have security aspects which need to be considered. In this article, we describe the next step in our research, which is performing self-tests within a distributed cyber-physical system to detect components compromised by an attacker.
Design and implementation of a concept for two-way exchange and network building of professionals from different working fields within the context of AAL.Heußner, M.; Löffler, B.; Schmidt, L. In Ambient Assisted Living: 8. AAL-Kongress (Frankfurt 2015), R. Wichert, H. Klausing (eds.), pp. 111–122. Springer, Cham, 2016.
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In the context of Ambient Assisted Living (AAL) it will get more and more important to know about AAL technologies for skilled employees who will be confronted with these technologies in the future. Currently most of them have less or no knowledge about it. Therefore we designed a further education that addresses two professional groups: Persons with a social and technical working background among which we want to enhance an exchange. The didactic method of tandem learning - known from learning foreign languages - is applied, so people from various working fields can learn with and from each other. The concept follows a blended learning approach with a presence part in combination with an e-learning part. Within a first pilot run with we tested the concept of the further education. In the following we present main results of the accompanying evaluation concerning network aspects and the two-way exchange among the participants of our further education. The results indicate that our concept was successful.
Sensing, Processing and Analytics - Augmenting the Ubicon Platform for Anticipatory Ubiquitous Computing.Atzmueller, Martin; Fries, Björn; Hayat, Naveed. In Proc. ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication, of UbiComp ’16 Adjunct. ACM Press, New York, NY, USA, 2016.
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Rethinking Service Quality for Context-Sensitive Socio-Technical Systems.Knote, Robin; Söllner, Matthias; Leimeister, Jan Marco. In AIS SIG Services Pre-ECIS Workshop. Istanbul, Turkey, 2016.
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Social Event Network Analysis: Structure, Preferences, and Reality.Atzmueller, Martin; Hanika, Tom; Stumme, Gerd; Schaller, Richard; Ludwig, Bernd. In Proc. IEEE/ACM ASONAM. IEEE Press, Boston, MA, USA, 2016.
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Lifelogging und vitaler Normalismus. Kultursoziologische Betrachtungen zur Neukonfiguration von Körper und Selbst.Gertenbach, Lars; Mönkeberg, Sarah. In Lifelogging. Digitale Selbstvermessung und Lebensprotokollierung zwischen disruptiver Technologie und kulturellem Wandel, S. Selke (ed.), pp. 25–43. VS Verlag, Wiesbaden, 2016.
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Reform des japanischen Datenschutzrechts im öffentlichen Bereich – Überblick über die Entwicklung des Rechts- und Gesetzessystems für den Datenschutz.Fuijwara, Shizuo; Geminn, Christian. In Zeitschrift für Datenschutz, pp. 522–528. 2016.
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Smart-TV und Privatheit.Ghiglieri, Marco; Hansen, Marit; Nebel, Maxi; Pörschke, Julia Victoria; Simo, Hervais. In Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, P. Zoche, R. Ammicht Quinn, M. Friedewald, M. Hansen, J. Heesen, T. Hess, J. Lamla, C. Matt, A. Roßnagel, S. Trepte, M. Waidner (eds.). Karlsruhe, 2016.
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Cloud-Services aus der Geschäftsperspektive. Krcmar, H.; Leimeister, J.M.; Roßnagel, A.; Sunyaev, A. Springer Gabler, Wiesbaden, 2016.
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Die Reterritorialisierung des Digitalen. Zur Reaktion nationaler Demokratie auf die Krise der Privatheit nach Snowden. Büttner, Barbara; Geminn, Christian L.; Hagendorff, Thilo; Lamla, Jörn; Ledder, Simon; Ochs, Carsten; Pittroff, Fabian. Kassel University Press, Universität Kassel, 2016.
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Informationelle Selbstbestimmung in der Cloud. Kroschwald, Steffen. In of DuD-Fachbeiträge. Springer Vieweg, 2016.
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Exzessiver Konsum: Was behindert die Erfahrung von Endlichkeit? Antworten der soziologischen Theorie.Lamla, Jörn. In Endlichkeit. Zur Vergänglichkeit und Begrenztheit von Mensch, Natur und Gesellschaft, A. Bihrer, A. Franke-Schwenk, T. Stein (eds.), pp. 221–242. Transcript, Bielefeld, 2016.
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White Paper Datenschutz-Folgenabschätzung.Friedewald, Michale; Obersteller, Hannah; Nebel, Maxi; Bieker, Felix; Rost, Martin. In Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, P. Zoche, R. Ammicht Quinn, M. Friedewald, M. Hansen, J. Heesen, T. Hess, J. Lamla, C. Matt, A. Roßnagel, S. Trepte, M. Waidner (eds.). Karlsruhe, 2016.
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Why Is It so Hard to Engage with Practices of the Informal Sector? Experimental Insights from the Indian E-Waste-Collective.Laser, Stefan. In Cultural Studies Review, 22(1). 2016.
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Filterung eingestellter Bewertungen durch Plattformbetreiber als zulässige Meinungsäußerung, Anmerkung zu KG Berlin, Urteil vom 10.12.2015 - 10 U 26/15.Benner, Anja; Wagner, Bernd. In jurisPR-ITR. 2016.
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Enterprise Big Data Engineering, Analytics and Management. Atzmueller, Martin; Oussena, Samia; Roth-Berghofer, Thomas. IGI Global, Hershey, PA, USA, 2016.
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Deconstructing the Sharing Economy: On the relevance for IS research.Knote, Robin; Blohm, Ivo. In Multikonferenz Wirtschaftsinformatik (MKWI). Ilmenau, 2016.
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It’s not about having Ideas - It’s about making Ideas happen! Fostering Exploratory Innovation with the Intrapreneur Accelerator.Knote, Robin; Blohm, Ivo. In European Conference on Information Systems (ECIS). Istanbul, Turkey, 2016.
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Formation and Temporal Evolution of Social Groups During Coffee Breaks.Atzmueller, Martin; Ernst, Andreas; Krebs, Friedrich; Scholz, Christoph; Stumme, Gerd. In Postproceedings of the International Workshops MUSE & SenseML 2014, Nancy, France, and MSM 2014, Seoul, Korea. Springer Verlag, Heidelberg, Germany, 2016.
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InterHapt.Borys, B.-B.; Seeger, M.; Stein, T.; Schmidt, L. Fachgebiet Mensch-Maschine-Systemtechnik der Universität Kassel, 2016.
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Bei der Interaktion mit den Fingern auf der glatten Fläche eines berührempfindlichen Bildschirms fehlt gegenüber den mechanischen Eingabegeräten die natürliche, über den haptischen Sinn vermittelte Rückmeldung. Diese Rückmeldung wird vielfach künstlich in Form von Vibrationen erzeugt. Es gibt noch keine ausreichenden und systematischen Gestaltungsempfehlungen für die haptische Rückmeldung bei der Nutzung von Touchscreens. Bisherige experimentelle Untersuchun-gen beziehen sich nur auf einzelne, eng umgrenzte Fragestellungen und geben auch keine Hinweise für diesen speziellen Anwendungsfall. Im Projekt InterHapt wurde deshalb die menschliche Wahrnehmung bezüglich haptischer Rückmeldung an Touchscreens untersucht, um Gestaltungsempfehlungen abzuleiten. Der Stand des Wissens über haptische Wahrnehmung, die technischen Möglichkeiten zur Erzeugung haptisch wahrnehmbarer Rückmeldung und die Formen und Einsatzgebiete von Touchscreens wurden erhoben. In einer Nutzerbefragung wurden Umgang und Erfahrung mit Touch-screens und haptischer Rückmeldung bestimmt sowie Handhaltung und benutze Finger ermittelt. In Experimenten wurde fehlendes Wissen über haptische Wahrnehmung ergänzt und in einem Abschlussexperiment die optimale Rückmeldung für unterschiedliche Interaktionselemente bestimmt. Kontaktzeiten und aufgewendete Kräfte, die Wahrnehmungsgrenzen, die Reaktionszeiten für unterschiedliche Formen von Stimuli, die subjektive Einschätzung unterschiedlicher Vibrationsfrequenzen und -amplituden und die als angenehm bewerteten und bevorzugten Kombinationen für unterschiedliche, auf Touchscreens mögliche Interaktionsformen sind damit bekannt. Diese Ergebnisse können zur Implementierung effektiver, effizienter und als angenehm empfundener haptischer Rückmeldung verwendet werden.
Can Laymen Outperform Experts? The Effects of User Expertise and Task Design in Crowdsourced Software Testing.Leicht, Niklas; Rhyn, Marcel; Hansbauer, Georg. In European Conference on Information Systems (ECIS 2016). Istanbul, Turkey, 2016.
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Anforderungserhebung für eine Online- Community für Open Service Innovation im Cloud-Computing-Umfeld.Kunz, Michael; Ebel, Philipp; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 73–86. Springer Gabler, Wiesbaden, 2016.
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Some Experimental Results on Randomly Generating Formal Contexts.Borchmann, Daniel; Hanika, Tom. In CLA, Vol. 1624 of CEUR Workshop Proceedings, M. Huchard, S. Kuznetsov (eds.), pp. 57–69. CEUR-WS.org, 2016.
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What Users Actually do in a Social Tagging System: A Study of User Behavior in BibSonomy.Doerfel, Stephan; Zoller, Daniel; Singer, Philipp; Niebler, Thomas; Hotho, Andreas; Strohmaier, Markus. In ACM Transactions on the Web, 10(2), pp. 14:1–14:32. ACM, 2016.
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Social tagging systems have established themselves as an important part in today’s web and have attracted the interest of our research community in a variety of investigations. Henceforth, several aspects of social tagging systems have been discussed and assumptions have emerged on which our community builds their work. Yet, testing such assumptions has been difficult due to the absence of suitable usage data in the past. In this work, we thoroughly investigate and evaluate four aspects about tagging systems, covering social interaction, retrieval of posted resources, the importance of the three different types of entities, users, resources, and tags, as well as connections between these entities’ popularity in posted and in requested content. For that purpose, we examine live server log data gathered from the real-world, public social tagging system BibSonomy. Our empirical results paint a mixed picture about the four aspects. While for some, typical assumptions hold to a certain extent, other aspects need to be reflected in a very critical light. Our observations have implications for the understanding of social tagging systems, and the way they are used on the web. We make the dataset used in this work available to other researchers.
Die Urheberbezeichnung im Web: Ein Vorschlag zur rechtskonformen technischen Umsetzung der Urheberbezeichnung im isolierten Dateiabruf.Hofmann, Kai. In Zeitschrift für Urheber- und Medienrecht, pp. 25–34. 2016.
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Marktunterstützung durch Open-Service-Innovation.Kunz, Michael; Ebel, Philipp; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 359–368. Springer Gabler, Wiesbaden, 2016.
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The Role of Cores in Recommender Benchmarking for Social Bookmarking Systems.Doerfel, Stephan; Jäschke, Robert; Stumme, Gerd. In ACM Transactions on Intelligent Systems and Technology, 7(3), pp. 40:1–40:33. 2016.
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Social bookmarking systems have established themselves as an important part in today’s web. In such systems, tag recommender systems support users during the posting of a resource by suggesting suitable tags. Tag recommender algorithms have often been evaluated in offline benchmarking experiments. Yet, the particular setup of such experiments has rarely been analyzed. In particular, since the recommendation quality usually suffers from difficulties like the sparsity of the data or the cold start problem for new resources or users, datasets have often been pruned to so-called cores (specific subsets of the original datasets) – however without much consideration of the implications on the benchmarking results. In this paper, we generalize the notion of a core by introducing the new notion of a set-core – which is independent of any graph structure – to overcome a structural drawback in the previous constructions of cores on tagging data. We show that problems caused by some types of cores can be eliminated using setcores. Further, we present a thorough analysis of tag recommender benchmarking setups using cores. To that end, we conduct a large-scale experiment on four real-world datasets in which we analyze the influence of different cores on the evaluation of recommendation algorithms. We can show that the results of the comparison of different recommendation approaches depends on the selection of core type and level. For the benchmarking of tag recommender algorithms, our results suggest that the evaluation must be set up more carefully and should not be based on one arbitrarily chosen core type and level.
Open Service Innovation Online- Community für Cloud-Service-Ökosysteme.Kunz, Michael; Ebel, Philipp; Leimeister, Jan Marco. In Cloud-Services aus der Geschäftsperspektive, H. Krcmar, J. M. Leimeister, A. Roßnagel, A. Sunyaev (eds.), pp. 187–206. Springer Gabler, Wiesbaden, 2016.
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The Appropriation of Collaborative Learning – Qualitative Insights from a Flipped Classroom.Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Hawaii International Conference on System Sciences (HICSS). Kauai, Hawaii, USA, 2016.
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Improved Activity Recognition by Using Grouped Activities.Jahn, Andreas; David, Klaus. In Proceedings of the International Conference on Pervasive Computing and Communications Workshops, pp. 1–5. IEEE, Sydney, Australia, 2016.
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The information of a person's activity can be used for a multitude of application. Thus, the activity recognition and the improvement of the activity recognition performance is a focus of research. Unfortunately, activities similar to each other are still likely to be mixed up during the activity recognition, resulting in a decrease in activity recognition performance. We propose a lightweight method to improve the recognition performance. By reevaluating recognized activities, we group similar activities to a new activity. We refer the created activity as grouped activity. We evaluate our method with an activity-set of seven activities and compare the results with two common approaches: the average recognition performance of the individual activities and the recognition performance using a generalized activity. We show an F-Measure improvement of up to 6.6 % by using the grouped activity.
Datenschutz in der Industrie 4.0. Neue Lösungsansätze der Europäischen Datenschutzgrundverordnung.Hofmann, Kai. In Industrie 4.0 als unternehmerische Gestaltungsaufgabe. Betriebswirtschaftliche, technische und rechtliche Herausforderungen, R. Obermaier (ed.), pp. 171–187. Springer Gabler, Wiesbaden, 2016.
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How Cultural Values Influence the Appropriation of Technology-Mediated Learning.Janson, Andreas; Ernst, Sissy-Josefina; Söllner, Matthias. In European Conference on Information Systems (ECIS). Istanbul, Turkey, 2016.
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Information technology (IT) is an important enabler of innovative learning scenarios. Today, numerous IT-enabled learning scenarios – often referred to as technology-mediated learning (TML) – such as massive open online courses, are applied worldwide across different cultures. However, little insights are available regarding the appropriation of TML and how culture influences the appropriation process. Based on adaptive structuration theory and espoused cultural values, we develop and evaluate a theoretical model capturing the cultural effects in the context of TML appropriation. By means of structural equation modeling and a partial least squares approach, we research the moderating role of espoused cultural values and its influence on TML appropriation. The results show that faithfulness, comfort with technology, and collaborative learning appropriation significantly affect learning success as appropriation outcome. Moreover, the results indicate that espoused cultural values influence the appropriation of TML. The present paper thus theoretically contributes to the scientific discussion concerning TML appropriation and the impact of culture on the deployment of IT while also making a practical contribution by deriving implications for TML application across different cultures. Keywords: Appropriation, Technology-Mediated Learning, Espoused Cultural Values, Adaptive Structuration Theory.
The Social Bond of Consumer Citizens. Exploring Consumer Democracy with Actor-Network-Pragmatism.Lamla, Jörn. In The Transformation of Citizenship, Vol. Vol. 1: The Political Economy, J. Mackert, B. S. Turner (eds.). Routledge, London/ New York, 2016.
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2015[ to top ]

5G / LTE Based Protection of Vulnerable Road Users: Detection of Crossing a Curb.Jahn, Andreas; David, Klaus; Engel, Sebastian. In 2015 IEEE 82nd Vehicular Technology Conference (VTC Fall), pp. 1–5. IEEE, Boston, MA, USA, 2015.
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Unfortunately, every year many vulnerable road users (VRUs), such as pedestrians or bicyclists are killed or seriously injured in traffic accidents. Several research groups are working on different solutions including radar or laser based approaches to reduce the number of traffic accidents VRUs are involved. The approach presented in this paper is based on wireless communications such as WLAN and 5G/LTE and a "context filter". The "context filter" identifies vulnerable road users in potentially dangerous situations based on several contexts (VRU position, movement direction, accelerations). An identified dangerous situation is communicated between the VRU and the cars using wireless communication such as ad hoc or cellular systems. As one specifically interesting context for identifying dangerous situations this paper investigates on detecting pedestrians stepping onto the road. We examine smartphone sensor data and several reasoning classifiers to investigate whether "stepping onto the road" by detecting a pedestrian "crossing a curb" is possible. To the best of our knowledge detecting pedestrians crossing a curb by using smartphone sensors, has not been investigated so far.
Elektronische Formulare im Verwaltungsverfahren - Neue Form des Schriftformersatzes.Johannes, P.C. In Multimedia und Recht (MMR), (11), pp. 694–700. 2015.
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Beweissicherheit im elektronischen Rechtsverkehr - Die Folgen der europäischen Harmonisierung.Jandt, Silke. In Neue Juristische Wochenschrift, (17), pp. 1205–1211. 2015.
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Understanding and Engaging the Appropriation of Technology-mediated Learning – A Theory-driven Design Approach.Janson, Andreas. In International Conference on Information Systems (ICIS) 2015, Doctoral Consortium. Fort Worth, Texas, USA, 2015.
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Towards a Holistic Understanding of Technology-mediated Learning Appropriation.Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Fort Worth, Texas, USA, 2015.
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Information technology in the learning process is one major success factor for innovative learning scenarios. A necessary pre-condition is the faithful appropriation of technology-mediated learning (TML) to ensure learning outcomes. However, research still lacks insights concerning determinants and consequences of a faithful TML appropriation. Therefore, this research-in-progress paper presents a mixed-methods research approach to gain a holistic understanding of TML appropriation. First, based on the insights of adaptive structuration theory, a theoretical model is developed considering objective and subjective measures for TML appropriation as well as antecedents and consequences of TML appropriation. Second, the mixed-methods approach is presented in order to evaluate the theoretical model. Our expected contribution to theory includes an extension of both TML and adaptive structuration theory with an in-depth view of TML appropriation. Expected practical contributions include the derivation of design implications for TML services that are faithfully appropriated to ensure learning success of TML participants.
An Ontology-Based Reasoning Framework for Context-Aware Applications.Anderson, Christoph; Suarez, Isabel; Xu, Yaqian; David, Klaus. In Proceedings of the 9th International and Interdisciplinary Conference on Modeling and Using Context, CONTEXT 2015, Vol. 9405 of Lecture Notes in Computer Science, H. Christiansen, I. Stojanovic, G. A. Papadopoulos (eds.), pp. 471–476. Springer International Publishing, Lanarca, Cyprus, 2015.
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Context-aware applications process context information to support users in their daily tasks and routines. These applications can adapt their functionalities by aggregating context information through machine-learning and data processing algorithms, supporting users with recommendations or services based on their current needs. In the last years, smartphones have been used in the field of context-awareness due to their embedded sensors and various communication interfaces such as Bluetooth, WiFi, NFC or cellular. However, building context-aware applications for smartphones can be a challenging and time-consuming task. In this paper, we describe an ontology-based reasoning framework to create context-aware applications. The framework is based on an ontology as well as micro-services to aggregate, process and represent context information.
Wann drohen schwerwiegende Beeinträchtigungen im Rahmen von § 42a BDSG? Mehr Rechtssicherheit durch mehr Informationen?Marschall, Kevin. In Recht der Datenverarbeitung, (1), pp. 17–23. 2015.
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Mining, Modeling and Recommending ’Things’ in Social Media. Atzmueller, Martin; Chin, Alvin; Scholz, Christoph; Trattner, Christoph. In Vol. 8940 of LNCS. Springer Verlag, Heidelberg, Germany, 2015.
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Subgroup and Community Analytics on Attributed Graphs.Atzmueller, Martin. In Proc. International Workshop on Social Network Analysis using Formal Concept Analysis (SNAFCA-2015). CEUR-WS, 2015.
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The efficient provision of culture-sensitive services – a modularization approach.Janson, Andreas; Peters, Christoph; Leimeister, Jan Marco. In 3rd International Conference on Serviceology (ICServ 2015). San Jose, CA, USA, 2015.
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EU-DSGVO: Meldepflicht bei Datenpannen.Marschall, Kevin. In BvD-News - Fachmagazin für den Datenschutz, (1), pp. 30–32. 2015.
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Big Data und die Zukunft des Scoring.Jandt, Silke. In Kommunikation und Recht, Begleitheft zu Heft 5, pp. 6–8. 2015.
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Proceedings of the 2015 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2015). Atzmueller, Martin; Lemmerich, Florian. Vol. 1521. CEUR-WS, Porto, Portugal, 2015.
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Technische Umsetzung der TANDEM-Community - Ein IT- Tool zur gemeinschaftlichen Erstellung von Geschäftsmodellen.Huber, Michael; Ebel, Philipp; Krcmar, Helmut. In Innovieren im demografischen Wandel - Methoden und Konzepte für ein modernes Innovationsmanagement, J. M. Leimeister, H. Krcmar, K. Möslein, S. Ohly (eds.), pp. 127–141. Springer Fachmedien, Wiesbaden, 2015.
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Determinanten und Effekte sinngetreuer Nutzung von Learning Management Systemen.Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Wirtschaftsinformatik (WI) Konferenz 2015. Osnabrück, Germany, 2015.
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IT-Unterstützung im Lernprozess ist ein Schlüsselfaktor für den Erfolg innovativer Lehr-/Lernszenarien. Notwendige Voraussetzung hierfür ist die sinngetreue Nutzung von Learning Management Systemen (LMS) durch den Lernenden, um den Lernerfolg in innovativen Lehr-/Lernszenarien sicherzustellen. Dennoch gibt es bislang kaum Erkenntnisse, was die sinngetreue Nutzung von LMS beeinflusst. Im ersten Schritt werden daher, aufbauend auf den Erkenntnissen der adaptiven Strukturationstheorie, Einflussfaktoren auf die sinngetreue Nutzung von LMS identifiziert und in ein theoretisches Modell eingebettet. Im zweiten Schritt wird dieses Modell als Strukturgleichungsmodell operationalisiert und evaluiert. Die Ergebnisse zeigen, dass die wahrgenommene IT-Unterstützung, Interaktivität und der Task Technology Fit die sinngetreue Nutzung eines LMS signifikant beeinflussen. Zudem zeigen die Ergebnisse, dass die sinngetreue Nutzung ein signifikanter Prädiktor für die Qualität des Lernprozesses und den Lernerfolg darstellt. Damit leistet dieses Paper einen theoretischen Beitrag zur wissenschaftlichen Diskussion des IT-unterstützten Lernprozesses und einen praktischen Beitrag, indem Implikationen für den Einsatz von LMS abgeleitet werden.
Fast Description-Oriented Community Detection using Subgroup Discovery (Extended Abstract, Resubmission).Atzmueller, Martin; Doerfel, Stephan; Mitzlaff, Folke. In Proc. LWA 2015 (KDML Special Track). 2015.
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A Toolchain for Context Recognition: Automating the Investigation of a Multitude of Parameter Sets.Jahn, Andreas; Lau, Sian Lun; David, Klaus; Sick, Bernhard. In 2015 IEEE 82nd Vehicular Technology Conference (VTC Fall), pp. 1–5. IEEE, Boston, MA, USA, 2015.
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A person's context data can be used for a multitude of applications, such as energy management or health care. Common context recognition approaches rely on several factors, such as the sensor set, features, or the context modeling algorithm. Discovering the recognition performances of different parameter setting combinations is a complex, time-consuming, and error-prone task. To support the context recognition research, we present the Context Recognition Assistance Tool (CRAT). The Context Recognition Assistance Tool assist by automatically conducting the evaluation for a multitude combination of parameter settings and clearly presents the findings. Using the CRAT, we investigate to what degree five parameters influence the recognition accuracy. To support the research in the field of context recognition, the CRAT is publicly available.
Exploratory Subgroup Analytics on Ubiquitous Data.Atzmueller, Martin; Mueller, Juergen; Becker, Martin. In Mining, Modeling and Recommending ’Things’ in Social Media, Vol. 8940. Springer Verlag, Heidelberg, Germany, 2015.
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Voraussetzungen für die elektronische Akte.Johannes, P.C. In Städte- und Gemeinderat, (4), pp. 13–14. 2015.
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Datenpannen – „neue“ Meldepflicht nach der europäischen DS-GVO?Marschall, Kevin. In Datenschutz und Datensicherheit, (3), pp. 183–189. 2015.
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Engaging the Appropriation of Technology-Mediated Learning Services – A Theory-Driven Design Approach.Janson, Andreas; Thiel de Gafenco, Marian. In European Conference on Information Systems (ECIS). Münster, Germany, 2015.
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Erreichbarkeit steuern.Maier, Natalie; Ossoinig, Verena. In Arbeitsrecht im Betrieb, 36(9), pp. 32–34. 2015.
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Conferator – A Ubiquitous System for Enhancing Social Networking at Conferences.Atzmueller, Martin; Kibanov, Mark; Scholz, Christoph; Mueller, Juergen; Stumme, Gerd. In Proc. UIS Workshop. 2015.
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Adaptive Class Association Rule Mining for Human Activity Recognition.Atzmueller, Martin; Kibanov, Mark; Hayat, Naveed; Trojahn, Matthias; Kroll, Dennis. In Proceedings of the International Workshop on Mining Ubiquitous and Social Environments (MUSE2015). Porto, Portugal, 2015.
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Life-Style, Fitness- und Gesundheits-Apps - Laufen Datenschutz und Vertraulichkeit hinterher?Jandt, Silke; Hohmann, Carolin. In Internet der Dinge - Digitalisierung von Wirtschaft und Gesellschaft - Tagungsband Herbstakademie 2015, J. Taeger (ed.), pp. 17–34. Edewecht, 2015.
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Rechtsfragen und praktische Tipps bei der Ortung durch Smartphone-Apps.Maier, Natalie; Ossoinig, Verena. In Verbraucher und Recht, 30(9), pp. 330–336. 2015.
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Subgroup Discovery - Advanced Review.Atzmueller, Martin. In WIREs: Data Mining and Knowledge Discovery, 5(1), pp. 35–49. 2015.
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Subgroup discovery is a broadly applicable descriptive data mining technique for identifying interesting subgroups according to some property of interest. This article summarizes fundamentals of subgroup discovery, before it reviews algorithms and further advanced methodological issues. In addition, we briefly discuss tools and applications of subgroup discovery approaches. In that context, we also discuss experiences and lessons learned and outline future directions in order to show the advantages and benefits of subgroup discovery.
Freizeit und Beruf – Rechtliche und technische Unterstützung der Work-Life-Balance.Maier, Natalie; Ossoinig, Verena. In Der Betrieb, 68(41), pp. 2391–2396. 2015.
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Arbeit und IT: Crowdsourcing und Crowdwork als neue Arbeits- und Beschäftigungsformen.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David; Blohm, Ivo. In ver.di – Vereinte Dienstleistungsgewerkschaft, Vol. Gute Arbeit und Digitalisierung: Prozessanalysen und Gestaltungsperspektiven für eine humane digitale Arbeitswelt, pp. 66–79. 2015.
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Einführung in das Rechtshandbuch.Hornung, Gerrit; Müller-Terpitz, Ralf. In Rechtshandbuch Social Media, G. Hornung, R. Müller-Terpitz (eds.), pp. 1–9. Springer, 2015.
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Visionäre Strategien, lernende Netzwerke, kreative Regelungs-Arrangements: Erkenntnisse zur Governance der Klimaanpassung aus der Forschungsinitiative KLIMZUG.Knieling, J.; Roßnagel, A.; Schlipf, S. In Governance der Klimaanpassung. Akteure, Organisation und Instrumente für Stadt und Region, Vol. 6, J. Knieling, A. Roßnagel (eds.), pp. 419–434. oekom, 2015.
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IT-enabled Product Innovation: Customer Motivation for Participating in Virtual Idea Communities.Bretschneider, Ulrich; Leimeister, Jan Marco; Mathiassen, Lars. In International Journal of Product Development, 20(2), pp. 126–141. 2015.
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Ciphertext-Only Cryptanalysis of Hagelin M-209 Pins and Lugs.Lasry, George; Kopal, NIls; Wacker, Arno. In Cryptologia, (ahead-of-print), pp. 1–36. 2015.
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The Hagelin M-209 was a mechanical encryption device used by the U.S. Army during World War II and the Korean War, as well as by other armies and in embassy settings. In this article, the authors present a four-stage hillclimbing algorithm for recovering the full key settings from ciphertext only. The first two stages are based on a divide-and-conquer approach developed by Geoff Sullivan. In the current performance evaluation, the authors show that their method is able to recover key settings from messages as short as 750 letters, compared to 2,000 – 2,500 letters with prior methods. With this method, they solved several M-209 ciphertext-only challenges, including the final exercises in W. Barker’s 1977 book, Cryptanalysis of the Hagelin Cryptograph.
Fostering Ideation Among Patients: Exaptation of Web-based Ideation Platforms as Health 2.0 Tools for Virtual Patient Communities.Bretschneider, Ulrich; Hartmann, Marco; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Fort Worth, Texas, USA, 2015.
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Beweiseignung fortgeschrittener elektronischer Signaturen. Grigorjew, Olga. In Vol. 2 of Interdisciplinary Research on Information System Design. kassel university press, 2015.
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Auf der Jagd nach dem günstigsten Preis: Was beeinflusst die Kaufabsicht von Nutzern von Produkt- und Preisvergleichsseiten?Bretschneider, Ulrich; Gierczak, Michael; Sonnick, Anna; Leimeister, Jan Marco. In Marktplätze im Umbruch - Digitale Strategien für Services im Mobilen Internet (ISBN: 978-3-662-43782-7), C. Linnhoff-Popien, M. Zaddach, A. Grahl (eds.), pp. 43–53. Springer Vieweg, Wiesbaden, 2015.
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Geiz ist geil: Empirische Untersuchung des Einflusses von Produkt- und Preisvergleichsseiten im Internet auf die Kaufabsicht ihrer Nutzer.Bretschneider, Ulrich; Gierczak, Michael Marcin. In 77. Jahrestagung des VHB. Wien, Österreich, 2015.
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A Building Block for Awareness in Technical Systems: Online Novelty Detection and Reaction With an Application in Intrusion Detection.Gruhl, Christian; Sick, Bernhard; Wacker, Arno; Tomforde, Sven; Hähner, Jörg. In Awareness Science and Technology (iCAST), 2015 IEEE 7th International Conference on, pp. 194–200. IEEE, Qinhuangdao, China, 2015.
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In this article we propose a new building block to realize awareness in technical systems, a two-stage algorithm for online novelty detection and reaction in a probabilistic framework. It uses a combination of parametric as well as nonparametric density modeling techniques. First, observed samples are categorized as potentially novel. Then, clusters of potentially novel samples are identified and finally probabilistic models of the observed environment are extended by adding new model components that describe the novel process. To demonstrate the applicability of the proposed algorithm in self-adapting technical systems, we investigate a case study in the field of intrusion detection, where new kinds of attacks have to be identified by an intrusion detection system. That is, the algorithm is used in this article to realize environment-awareness, but it could in principal be taken for self- or context-awareness mechanisms, too.
Theory-Driven Design of an IT-Based Peer Assessment to Assess High Cognitive Levels of Educational Objectives in Large-Scale Learning Services.Lehmann, Katja; Leimeister, Jan Marco. In European Conference on Information Systems (ECIS). Münster, Germany, 2015.
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Flipping the Classroom – IT-unterstützte Lerneraktivierung zur Verbesserung des Lernerfolges einer universitären Massenlehrveranstaltung.Lehmann, Katja; Oeste, Sarah; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In HMD Praxis der Wirtschaftsinformatik, 52(1), pp. 81–95. 2015.
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Durch steigende Studierendenzahlen prägen universitäre Massenlehrveranstaltungen nach wie vor das Bild in der deutschen Hochschullandschaft. Diese Lehrveranstaltungen sind gekennzeichnet durch hohe Anonymität und einen Mangel an Interaktion und Zusammenarbeit. Lernende bleiben sich im Lernprozess weitestgehend selbst überlassen und sind eher Konsumenten der Lerninhalte anstatt selbst im Mittelpunkt der Lernaktivitäten zu stehen. Jedoch bilden vor allem verschiedene Formen der Interaktion entscheidende Faktoren für Lernerfolg und Zufriedenheit eines Einzelnen. Der Flipped Classroom stellt eine Möglichkeit dar, den Nachteilen von universitären Massenlehrveranstaltungen zu begegnen. Der vorliegende Beitrag präsentiert ein IT-gestütztes Flipped Classroom-Konzept am Beispiel einer Wirtschaftsinformatik-Grundlagenveranstaltung. Das Konzept unterteilt die Veranstaltung in vier aufeinander ablaufende Lernphasen: Selbstlernphase, Peer-Lernphase, Transferphase und Vertiefungsphase. Durch die Integration verschiedener Lernmethoden wird sichergestellt, dass zum einen die Potentiale des IT-gestützten Lernens – beispielsweise orts- und zeitunabhängiges Lernen – adressiert und zum anderen die verschiedenen Formen von Interaktion realisiert werden. Durch die intensive Beschäftigung und den intensiven Austausch mit den Lerninhalten wird sichergestellt, dass alle kognitiven Lernzielebenen adressiert und überprüft werden. Der praktische Beitrag zeigt wie Massenlehrveranstaltungen durch Lernmethoden bereichert werden können. Zudem wird als theoretischer Beitrag die aktive Einbindung von Lernenden in den Lernprozess und deren Rolle als Prosument betont. Das Konzept sowie die Ergebnisse des vorgestellten Beitrages lassen sich auf andere Veranstaltungen im universitären Kontext oder die betriebliche Weiterbildung übertragen.
Der Wert von IT-gestütztem Peer Assessment zur Unterstützung des Lernens in einer Universitären Massenlehrveranstaltung.Lehmann, Katja; Söllner, Matthias; Leimeister, Jan Marco. In Wirtschaftsinformatik (WI) Konferenz 2015. Osnabrück, Germany, 2015.
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Steigende Studierendenzahlen prägen nach wie vor das Bild an deutschen Universitäten, wodurch in Massenlehrveranstaltungen auf einen Dozent weit über 100 Studierende kommen. Diese Lehrveranstaltungen sind durch mangelnde Interaktion zwischen allen Beteiligten und wenig Feedback für Studierende zu ihrem Lernstand gekennzeichnet. Das ist problematisch, da insbesondere diese Faktoren Prädiktoren für individuellen Lernerfolg und Zufriedenheit darstellen. Der Einsatz von IT-gestütztem Peer Assessment ist eine Möglichkeit, Interaktion und Feedback in den Lernprozess zu integrieren ohne den Dozenten zusätzlich zu belasten. Dabei beurteilen Lernende wechselseitig die Qualität der Arbeit von Anderen. Der vorliegende Beitrag untersucht, wie ITgestütztes Peer Assessment in eine Blended-Learning Massenlehrveranstaltung integriert werden kann. Die Ergebnisse zeigen, dass Peer Assessment eine wichtige Rolle für wahrgenommenen Lernerfolg und Zufriedenheit spielt sowie von Studierenden als hilfreich empfunden wird. Der praktische Beitrag zeigt wie Massenlehrveranstaltungen ressourcenschonend bereichert werden können. Zudem wird als theoretischer Beitrag die Rolle der Einbindung von Peers in den Lernprozess betont.
Konflikte und Potentiale informationstechnisch-assistierter Freizeitmobilität.Kniewel, R.; Radziwill, M.; Schmidt, L. In Nahverkehrs-Tage 2015 - Nahverkehr und Freizeit: Neue Kunden durch Innovative Konzepte gewinnen (Kassel 2015), of Schriftenreihe Verkehr, I. für V. der U. Kassel (ed.), pp. 65–84. Kassel University Press, Kassel, 2015.
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Dieser Beitrag beschreibt Ergebnisse aus dem nutzerzentrierten und iterativen Entwicklungsprozess einer mobilen Applikation, zur Unterstützung von Freizeitmobilität. Es werden die dabei identifizierten Konflikte vorgestellt, die aus der Verknüpfung von mobilitäts- sowie freizeitbezogenen Anforderungen seitens der Nutzer, den Eigenschaften der Zielgruppe mit einem hohen Anteil an älteren Personen sowie der Charakteristik des mobilen Nutzungskontexts resultieren. Auch werden auf Basis der Untersuchungen potentielle Lösungsansätze formuliert.
Modularization of Crowdfunding Services – Designing Disruptive Innovations in the Banking Industry.Haas, Philipp; Blohm, Ivo; Peters, Christoph; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Fort Worth, 2015.
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Schutzschilde gegen die NSA.Hahn, Tobias; Johannes, Paul C.; Lange, Benjamin. In Datenschutz und Datensicherheit, 39(2), pp. 71–77. 2015.
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Automated Known-Plaintext Cryptanalysis of Short Hagelin M-209 Messages.Lasry, George; Kopal, Nils; Wacker, Arno. In Cryptologia, (ahead-of-print), pp. 1–21. 2015.
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The Hagelin M-209 portable encryption device was used by the US Army in World War II and the Korean War, as well as by other armies and in embassy settings. In this paper, we present a fully automated computerized known-plaintext attack, based on hillclimbing and a novel fitness function - the Aggregate Displacement Error. In our performance evaluation we show that we are able to recover key settings for messages as short as 50 characters. To validate our results, we solved several publicly available challenge messages, including a message with only 40 letters.
Welche Governance brauchen Städte und Regionen für die Anpassung an den Klimawandel? Fragestellungen und Zugänge aus der Forschungsinitiative „KLIMZUG – Klimawandel in Regionen zukunftsfähig gestalten“ – Einleitung.Knieling, J.; Roßnagel, A. In Governance der Klimaanpassung. Akteure, Organisation und Instrumente für Stadt und Region, Vol. 6, J. Knieliing, A. Roßnagel (eds.), pp. 9–28. oekom, 2015.
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Crowdsourcing in Software Development: A State-of-the-Art Analysis.Leicht, Niklas; Durward, David; Blohm, Ivo; Leimeister, Jan Marco. In 28th Bled eConference. Maribor, Slovenia, 2015.
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Wie belastend ist Erreichbarkeit am Feierabend? Der Einfluss des organisationalen Work-Family-Klimas.Braukmann, Johanna; Schmitt, Antje; Ďuranová, Lenka; Ohly, Sandra. In Menschen Medien Möglichkeiten: 9. Tagung der Fachgruppe Arbeits-, Organisations- und Wirtschaftspsychologie (AOW) der Deutschen Gesellschaft für Psychologie (DGPs) in Mainz, 24.-26.09.2015. 2015.
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The Effects of Technology-Related Events on Positive Affect, Detachment from Work and Sleep.Braukmann, Johanna; Schmitt, Antje; Duranova, Lenka; Ohly, Sandra. In Opening Governance: Academy of Management 2015 Annual Meeting, Vancouver, Canada. 2015.
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Is Information and Communication Technology (ICT) a demand or a resource? - Development of an ICT Events Taxonomy.Braukmann, Johanna. In Respectful and effective leadership - managing people and organizations in turbulent times: The 17th congress of the European Association of Work and Organizational Psychology Oslo, Norway. 2015.
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Einführung in die Wirtschaftsinformatik. Leimeister, Jan Marco. 12th ed. Gabler Verlag, Berlin Heidelberg, 2015.
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Das Buch gibt eine fundierte und praxisbezogene Einführung in das Gesamtgebiet der Wirtschaftsinformatik. Aufbauend auf den bewährten Vorgängerauflagen von Stahlknecht und Hasenkamp wurde die 12. Auflage komplett überarbeitet, strukturell weiterentwickelt und aktualisiert. Die Schwerpunkte umfassen u.a. Systemplattformen, (Hardware, Betriebssysteme), Kommunikationssysteme, Datenbanken, Systementwicklung, IT-Anwendungssysteme, IT-Management und Digital Business.
Entwicklung eines Referenzmodells zur systematischen Steigerung der Mitgliederanzahl und der Nutzeraktivität in der Wachstumsphase von Virtuellen Communities.Hartmann, Marco. In Research on IT / Service / Innovation / Collaboration, 6. Kassel University Press (978-3-86219-838-2), Kassel, Germany, 2015.
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Nutzerunterstützung im Online-Versandhandel - Automatisierte Einschätzung der Vertrauenswürdigkeit durch ein Browser-Add-on.Boos, Carina; Roßnagel, Alexander. In Multimedia und Recht, p. 215. 2015.
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Rechtshandbuch Social Media. Hornung, Gerrit; Müller-Terpitz, Ralf. Springer, 2015.
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Verbraucher- und Datenschutz bei Online-Versanddiensten, Automatisierte Einschätzung der Vertrauenswürdigkeit durch ein Browser-Add-on. Boos, Carina. In Vol. 1, kassel university press (ed.), p. 506. kassel university press, Kassel, 2015.
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Datenweitergabe an und durch Spieleanbieter auf Facebook – Zugleich Anmerkung zu LG Berlin, Urt. v. 28.10.2014, Az. 16 O 60/13.Boos, Carina. In Verbraucher und Recht, 30(3), pp. 92–97, 101. 2015.
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On the Application Possibilities of Organic Computing Principles in Socio-technical Systems.Heck, H.; Edenhofer, S.; Gruhl, C.; Lund, A.; Shuka, R.; Hähner, J. In Organic Computing: Doctoral Dissertation Colloquium 2015, B. Sick, S. Tomforde (eds.). Kassel University Press GmbH, 2015.
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Towards Generating Test Ontologies using Subgroup Discovery.Knoell, Daniel; Rieder, Constantin; Atzmueller, Martin; Scherer, Klaus Peter. In Proc. LWA 2015 (WM Special Track). 2015.
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Demokratischer Experimentalismus in transnationalen Wertschöpfungskollektiven. Über einige Herausforderungen des ethischen Konsums und den Fall Elektroschrott.Laser, Stefan; Lamla, Jörn. In Routinen der Krise – Krise der Routinen. Verhandlungen des 37. Kongresses der Deutschen Gesellschaft für Soziologie in Trier 2014, Vol. 37, S. Lessenich (ed.), pp. 1–11. Trier, 2015.
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Digital services for consumers.Leimeister, Jan Marco; Österle, Hubert; Alter, Steven. In Electronic Markets (DOI: 10.1007/s12525-014-0174-6), 24(4). 2015.
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”What We Do Well and What Should We Do Better?” – Conceptualizing and Measuring ‘IS Use’ by the Synthesis of the Work of the Giants.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In 75th Annual Meeting of the Academy of Management - OCIS (Organizational Communication & Information Systems) Paper Development Workshop. Vancouver, British Columbia, Canada, 2015.
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Gemeinschaftliche Geschäftsmodellentwicklung – Wie in heterogenen Teams innovative Geschäftsmodelle geschaffen werden können.Ebel, Philipp; Leimeister, Jan Marco. In Innovieren im demografischen Wandel - Methoden und Konzepte für ein modernes Innovationsmanagement, J. M. Leimeister, H. Krcmar, K. Möslein, S. Ohly (eds.), pp. 97–123. Springer Fachmedien, Wiesbaden, 2015.
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Designing Tool Support for Collaborative Business Modeling.Ebel, Philipp. In Working Paper Series, Nr. 14, J. M. Leimeister (ed.). Kassel, Germany, 2015.
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When in Rome, do as the Romans do – Overcoming Culture Conflicts in Mobile Learning.Ernst, Sissy-Josefina; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Fort Worth, Texas, USA, 2015.
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Mobile learning allows for the embedding of learning into daily routines by means of authentic learning scenarios. In this context, IS research emphasizes the importance of considering individual differences such as cultural differences when using IT in learning scenarios. First, culture is a critical variable that strongly influences IT acceptance and use. Second, teaching concepts differ heavily across cultures. With this research-inprogress paper, we propose a theory-driven design approach to overcome culture conflicts for mobile learning applications. We derive requirements from IT-culture conflict theory and practice, which are addressed by design elements and implemented in a mobile learning application that is now being adapted for China. As a practical contribution of our research, we provide systematic guidance to overcome culture conflicts; as a theoretical contribution, we enrich culture theory by considering and resolving conflicts for mobile learning applications.
Schutzschilde gegen die NSA.Johannes, Christopher Paul; Lange, Benjamin; Hahn, Tobias. In Datenschutz und Datensicherheit, (2), pp. 71–77. 2015.
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IT-Sicherheit.Esslinger, Bernd; Wacker, Arno. In Wirtschaftsinformatik: Eine Einführung (Pearson Studium - Economic BWL), 3rd ed., Vol. Wirtschaftsinformatik, K. C. Laudon, J. P. Laudon, D. Schoder, eds. (eds.), pp. pp. 962–1061. Hallbergmoos, Germany: Pearson Deutschland GmbH, 2015.
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Die aktualisierte Einführung in die moderne Wirtschaftsinformatik von Kenneth C. Laudon, Jane P. Laudon und Detlef Schoder in der nun dritten, vollständig überarbeiteten und erweiterten deutschsprachigen Auflage begreift Informationssysteme als soziotechnische Systeme und vermittelt diese aus den drei Perspektiven Technik, Management und Organisation. Die Basis dafür ist die 13. Auflage des amerikanischen Weltbestseller-Lehrbuchs Management Information Systems. Managing the Digital Firm von Kenneth C. Laudon und Jane. P. Laudon, dessen Übersetzung Prof. Dr. Detlef Schoder (Universität zu Köln) grundlegend überarbeitet, in Teilen erweitert und auf die Spezifika sowie Bedürfnisse Studierender und Dozenten im deutschsprachigen Raum angepasst hat. Dazu integriert das Buch die Erkenntnisse der beiden Schwesterdisziplinen Information Systems und Wirtschaftsinformatik. Das vierfarbige Werk ist didaktisch und optisch stringent aufgebaut und unterstützt die strukturierte Aneignung des Inhalts. Dazu zählen kapitelbezogene Lernziele, Leitfragen, Gruppenprojekte, rekapitulierende wie auch weiterführende inhaltliche Übungsfragen, eine Zusammenstellung der Schlüsselbegriffe sowie ein ansprechendes Layout. Darüber hinaus illustrieren zahlreiche reale Fallstudien, Projekte und Beispiele die Vielschichtigkeit, Umfänglichkeit und Praxisrelevanz der Wirtschaftsinformatik. Ein umfangreiches Literaturverzeichnis sowie zusätzliche Online-Materialien ergänzen den präsentierten Stoff.
Effects of daily ICT use for work purposes during non-work time on employee recovery and well-being.Duranová, Lenka; Schmitt, Antje; Braukmann, Johanna; Ohly, Sandra. In The 4th biennial Society for Ambulatory Assessment (SAA) conference, Pennsylvania. 2015.
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Work related mobile use after hours and affective well-being: The role of ambition and positive work reflection.Duranová, Lenka; Schmitt, Antje; Braukmann, Johanna; Ohly, Sandra. In Respectful and effective leadership - managing people and organizations in turbulent times: The 17th congress of the European Association of Work and Organizational Psychology Oslo, Norway. 2015.
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Always online for work purposes – stressor, demand, or resource?Duranová, Lenka; Ohly, Sandra. In When, Where and for Whom are Job Resources Beneficial? EAWOP 2015 Small Group Meeting, Norwich. 2015.
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Arbeitsbezogene Technologienutzung am Feierabend – Stressor, Demand oder Ressource?Duranová, Lenka; Ohly, Sandra. In Menschen Medien Möglichkeiten: 9. Tagung der Fachgruppe Arbeits-, Organisations- und Wirtschaftspsychologie (AOW) der Deutschen Gesellschaft für Psychologie (DGPs) in Mainz, 24.-26.09.2015. 2015.
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Digitale Geschäftsmodelle im Profisport - Eine Ist-Analyse am Beispiel der National Football League.Köhler, Benjamin; Söllner, Matthias. In Student Consortium der WI 2015. Osnabrück, Germany, 2015.
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Einflussfaktoren auf die Nutzung von Cloud-Speicherdiensten.Gebauer, L.; Gierczak, M. M.; Söllner, M.; Leimeister, J. M. In Schmalenbachs Zeitschrift für betriebswirtschaftliche Forschung (zfbf), 67(3), pp. 367–407. 2015.
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Anforderungsmuster zur Förderung der Rechtmäßigkeit und Rechtsverträglichkeit von Cloud Computing-Diensten. Technical Report (3), . Gebauer, Lysann; Kroschwald, Sfeffen; Wicker, Magda. Kassel University Press (ISBN: 978-3-86219-577-0), Kassel, Germany, 2015.
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Simulating Cheated-Results-Dissemination for Volunteer Computing.Kopal, Nils; Kieselmann, Olga; Wacker, Arno. In 1st International Workshop on Signal Processing for Secure Communications (SP4SC-2015), held in conjunction with 3rd International Conference on Future Internet of Things and Cloud (FiCloud 2015). IEEE, Rome, Italy, 2015.
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In this paper, we present three novel distribution algorithms (Epoch Distribution Algorithm, Sliding Window Distribution Algorithm, and Extended Epoch Distribution Algorithm) in unstructured peer-to-peer networks for volunteer computing. In volunteer computing, the overall job is split into several sub jobs. These sub jobs are given to the (untrusted) PCs of volunteers. We show the performance of our algorithms with respect to double computed sub jobs. Furthermore, we present our idea of using cellular automata to simulate, evaluate, and visualize the cheated sub job result dissemination. Finally, we estimate and visualize the cheat detection behaviour of our cheat detection algorithm for volunteer computing.
Shine Bright like a Diamond – Exploring the Effects of Online-Product Presentation on Backing Behavior in Reward-based Crowdfunding.Gierczak, Michael Marcin; Nitze, Hans-Kristian. In European Conference on Information Systems (ECIS). Münster, Germany, 2015.
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Ubiquitäre IKT-Systeme und -Anwendungen.Geihs, Kurt. In Innovationsführerschaft - Credo und Praxis, First, , A. Schröder, T. Sommerlatte (eds.). Symposion Publishing, Düsseldorf, 2015.
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Nutzung des Anwesenheitsstatus zur Verbesserung der Work-Life-Balance.Kusber, Rico; Braukmann, Johanna; David, Klaus. In Menschen, Medien, Möglichkeiten: 9. Tagung der Fachgruppe Arbeits-, Organisations- und Wirtschaftspsychologie der Deutschen Gesellschaft für Psychologie, C. Dormann, V. C. Haun, T. Rigotti (eds.), p. 194. Pabst Science Publishers, Mainz, Germany, 2015.
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Direction Detection of Users Independent of Smartphone Orientations.Kusber, Rico; Memon, Abdul Qudoos; Kroll, Dennis; David, Klaus. In 2015 IEEE 82nd Vehicular Technology Conference (VTC Fall). IEEE, Boston, MA, USA, 2015.
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Smartphone sensors deliver useful information for applications such as indoor and outdoor navigation. An integral part of such applications is the detection of the orientation and movement direction of a smartphone user. Until now, movement direction detection using smartphones typically relies on GPS, which is often not available indoors. Alternatively, other approaches use sensors such as accelerometer and compass instead. These approaches rely on carrying the smartphone in a predefined orientation, or knowing the orientation of the smartphone in relation to the orientation of the user. In this paper, we present an approach to detecting the orientation and movement direction of users carrying smartphones inside the trouser pocket. This approach first determines the orientation of the smartphone's top using compass and orientation sensor. Second, this approach determines the orientation of the smartphone's screen, and the user's movement direction by observing compass and accelerometer during at least two steps the user takes. After these two steps, the approach is capable of continuously aligning smartphone orientation and user orientation. With our approach, the user is free to change direction, movement speed, or to stop moving at all. The smartphone can be placed in the trouser pocket arbitrarily. And the smartphone is free to wobble in the trouser pocket. How well our approach works, is investigated based on experimental measurements.
The Strategic Risks of Software Ecosystems.Dellermann, Dominik; Fliaster, Alexander. In Proceedings of the European Workshop on Software Ecosystems, K. M. Popp, P. Buxmann, T. A. Curran, G. Eichler, S. Jansen, T. Kude (eds.). Walldorf, Germany, 2015.
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Distributed Service Co-evolution based on Domain Objects.De Sanctis, Martina; Geihs, Kurt; Bucchiarone, Antonio; Valetto, Giuseppe; Marconi, Annapaola; Pistore, Marco. In 11th Int. Workshop on Engineering Service-Oriented Applications (WESOA’15), colocated with ICSOC 2015. Goa, India, 2015.
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Service evolution is a critical ingredient of the service life-cycle. The more our society depends on large-scale, complex service environments including cloud and mobile services, the more pressing becomes the question of how to evolve a service on-the-fly at runtime without bringing whole systems to a halt. Service inter–dependencies make it increasingly difficult to manage the service collection as a whole. Thus, there is an urgent need for coordinated service evolution. The main contributions of this paper are a conceptual solution for dynamic on-the-fly co-evolution of services, and a framework that supports the engineering of such co-evolution support. We analyze the types of changes that might happen in a service and their potential impact on dependent clients and servers. We present the design of a co-evolution support infrastructure based on a service computing model and platform. Our solution is built on top of the Domain Object concept, and our application domain is smart urban mobility.
Was ist und zu welchem Ende untersuchen wir die Verbraucherdemokratie?Lamla, Jörn. In Abschied vom Otto Normalverbraucher: Moderne Verbraucherforschung: Leitbilder, Informationen, Demokratie, C. Bala, K. Müller (eds.), pp. 169–185. Klartext, Essen, 2015.
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Politischer Konsum und (Post-)Demokratie - ein Debattenbeitrag.Lamla, Jörn. In Forschungsjournal Soziale Bewegungen, 28(2), pp. 28–36. 2015.
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Crypto Wars Reloaded?Geminn, Christian L. In Datenschutz und Datensicherheit, (8), pp. 546–547. 2015.
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Die Debatte um nationales Routing – eine Scheindebatte? Eine kritische Beschau der Argumentationslinien.Geminn, Christian L. In Multimedia und Recht, (2), pp. 98–103. 2015.
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Horizontal Integration of Organic Computing and Control Theory Concepts.Calma, A.; Jänicke, M.; Kantert, J.; Kopal, N.; Siefert, F.; Tomforde, S. In Organic Computing: Doctoral Dissertation Colloquium 2015, Vol. 7, B. Sick, S. Tomforde (eds.). Kassel University Press GmbH, 2015.
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Crowdfunding - Outlining the New Era of Fundraising.Gierczak, Michael Marcin; Bretschneider, Ulrich; Haas, Philipp; Blohm, Ivo; Leimeister, Jan Marco. In Crowdfunding in Europe – State of The Art in Theory And Practice; FGF Studies in Small Business and Entrepreneurship, O. Gajda, D. Brüntje (eds.), pp. 7–23. Springer Science + Business Media, Cham, 2015.
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Minding the Gap – An Expectation-Disconfirmation Approach to Reward-Based Crowdfunding.Gierczak, Michael Marcin; Englisch, Oliver; Bretschneider, Ulrich. In European Conference on Information Systems (ECIS). Münster, Germany, 2015.
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Towards a k-Resilient Data Dissemination Mechanism for Peer-to-Peer Networks.Heck, Henner. In Organic Computing: Doctoral Dissertation Colloquium 2015, Vol. 7, B. Sick, S. Tomforde (eds.), p. 65. Kassel University Press GmbH, 2015.
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Kulturkonflikte vermeiden – Mobiles Lernen für China.Ernst, Sissy-Josefina; Janson, Andreas; Söllner, Matthias; Leimeister, Jan Marco. In Mensch & Computer 2015. Stuttgart, Deutschland, 2015.
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Mobiles Lernen ist eine Möglichkeit authentisches Lernen in den Alltag zu integrieren. Dabei müssen bei der Gestaltung mobiler Applikationen individuelle Unterschiede, bspw. kultureller Art, berücksichtigt werden. Zum einen beeinflusst Kultur die Nutzung von IT, zum anderen unterscheiden sich Lehrkonzepte zwischen verschiedenen Kulturen wesentlich voneinander. Um diesen Unterschieden Rechnung zu tragen, werden im Beitrag Anforderungen aus der IT-Kulturkonflikttheorie abgeleitet, in Gestaltungsrichtlinien überführt und in einer mobilen Lernanwendung für den Einsatz in China umgesetzt.
Neue Geschäfts- und Arbeitsformen mit Hilfe der Crowd.Leimeister, Jan Marco; Zogaj, Shkodran. In RKW Magazin. Die Weisheit von Vielen - Schwerpunkt: Die Crowd-Methode (ISSN -1619-7372), Vol. 2, pp. 26–29. 2015.
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White Paper "Das versteckte Internet. Zu Hause - Im Auto - Am Körper.". Karaboga, Murat; Matzner, Tobias; Morlok, Tina; Pittroff, Fabian; Nebel, Maxi; Ochs, Carsten; Pape, Thilo; Pörschke, Julia V.; Schütz, Philip; Simo Fhom, Hervais. F. Privatheit (ed.). Forum Privatheit und selbstbestimmtes Leben in der Digitalen Welt, 2015.
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"Löschen" im Internet. Ein neuer Ansatz für die technische Unterstützung des Rechts auf Löschen.Kieselmann, Olga; Kopal, Nils; Wacker, Arno. In Datenschutz und Datensicherheit (DuD), (1/2015), pp. 31–36. 2015.
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Spätestens seit der Veröffentlichung des Entwurfs für die EU-weite Datenschutzregelung ist ausgiebig diskutiert worden, dass die im Artikel 17 beschriebenen Regelungen für das Löschen, insbesondere die Pflicht, Dritte über die gewünschte Löschung zu informieren, aufgrund der fehlenden technischen Lösung in der Praxis nicht umsetzbar sind. Seit Mai 2014 hat die öffentliche Diskussion eine neue Wendung genommen, als Google gerichtlich verurteilt wurde, auf Antrag bestimmte Links zu löschen. Verallgemeinert kann gesagt werden, dass es an Kritik an dem Artikel 17 wegen der Schwierigkeit, ihn in der Praxis zu realisieren, nicht mangelt. Es mangelt jedoch an konkreten Lösungsvorschlägen für die technische Umsetzung, sodass Dienstanbieter ein Werkzeug zur Verfügung hätten, das Gesetz umzusetzen. In diesem Aufsatz wird ein solches System vorgestellt, welches sowohl den Internet-Nutzern als auch den Dienstanbietern ein Werkzeug zur Unterstützung des Gesetzes zur Verfügung stellt.
A Novel Approach to Data Revocation on the Internet.Kieselmann, Olga; Kopal, Nils; Wacker, Arno. In 10th DPM International Workshop on Data Privacy Management (DPM 2015), co-located with 20th European Symposium on Research in Computer Security (ESORICS 2015), pp. 134–149. Vienna, Austria, 2015.
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After publishing data on the Internet, the data publisher loses control over it. However, there are several situations where it is desirable to remove published information. To support this, the European Union proposed the General Data Protection Regulation (GDPR) which states that providers must remove the data when the corresponding owner requests it. However, the data might already have been copied by third parties. Therefore, Article 17 of the GDPR includes the regulation that the provider must also inform all third parties about the users request. Hence, the providers would need to track every access, which is hard to achieve. This technical infeasibility is a gap between the legislation and the current technical possibilities. To close this gap, we propose a novel service which gives the data owner the possibility to inform simultaneously all providers about her removal request.
Legal Compatibility as a Characteristic of Sociotechnical Systems - Goals and Standardized Requirements.Hoffmann, Axel; Schulz, Thomas; Zirfas, Julia; Hoffmann, Holger; Roßnagel, Alexander; Leimeister, Jan Marco. In Business & Information Systems Engineering (BISE) DOI: 10.1007/s12599-015-0373-5, pp. 1–11. 2015.
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Is Web Content a Good Proxy for Real-Life Interaction? A Case Study Considering Online and Offline Interactions of Computer Scientists (Poster).Kibanov, Mark; Atzmueller, Martin; Illig, Jens; Scholz, Christoph; Barrat, Alain; Cattuto, Ciro; Stumme, Gerd. 2015.
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Supporting Peat Fire Management using Social Media.Kibanov, Mark; Amin, Imaduddin; Lee, Jong Gun. 2015.
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Peat fires and haze originating from such fires cause a large spectrum of ecological, social and economical problems as well as health issues. Indonesia is a country where peat fires are prevalent and the population suffers from the ensuing haze problems. Two Indonesian islands (Sumatra and Kalimantan) are most affected by peat fires. In this abstract, considering the fact that the usage of social media in Indonesia is high (with 72 million accounts in social networks), it is expected that insights generated from social media can help central and local authorities to improve peat fire management. In particular, we focus on peat fires in the year 2014 in Riau Province, which is one of the most haze-affected areas on Sumatra Island.
Mining Groups Stability in Ubiquitous and Social Environments: Communities, Classes and Clusters.Kibanov, Mark. In Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, of WSDM ’15, X. Cheng, H. Li, E. Gabrilovich, J. Tang (eds.), pp. 441–446. ACM, Shanghai, China, 2015.
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Ubiquitous Computing is an emerging research area of computer science. Similarly, social network analysis and mining became very important in the last years. We aim to combine these two research areas to explore the nature of processes happening around users. The presented research focuses on exploring and analyzing different groups of persons or entities (communities, clusters and classes), their stability and semantics. An example of ubiquitous social data are social networks captured during scientific conferences using face-to-face RFID proximity tags. Another example of ubiquitous data is crowd-generated environmental sensor data. In this paper we generalize various problems connected to these and further datasets and consider them as a task for measuring group stability. Group stability can be used to improve state-of-the-art methods to analyze data. We also aim to improve the performance of different data mining algorithms, eg. by better handling of data with a skewed density distribution. We describe significant results some experiments that show how the presented approach can be applied and discuss the planned experiments.
Geschäftsmodelle in der Telemedizin - Ein Ordnungsrahmen.Kerkhoff, Mathias; Kromat, Theresa; Peters, Christoph. In Working Paper Series, Nr. 8. Kassel, Germany, 2015.
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Dynamische Zertifizierung von Cloud Computing-Diensten: Eine rechtswissenschaftliche Betrachtung am Beispiel „Verfügbarkeit“.Hofmann, Johanna M. In INFORMATIK 2015, GI-Edition - Lecture Notes in Informatics (LNI), Cunningham (ed.), pp. 539–552. 2015.
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Fitness- und Gesundheits-Apps - Neues Schutzkonzept für Gesundheitsdaten?Hohmann, Carolin; Jandt, Silke. In K&R, (11), pp. 694–700. 2015.
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A Novel Method for Securing Critical Infrastructures by Detecting Hidden Flows of Data.Benedetto, Francesco; Giunta, Gaetano; Liguori, Angelo; Wacker, Arno. In Communications and Network Security (CNS), 2015 IEEE Conference on, pp. 648–654. IEEE, 2015.
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This work introduces a novel method for securing critical infrastructures. We propose an innovative hypothesis test for intrusion detection in data communications. In particular, we detect the presence or absence of a covert (i.e. hidden) timing channel. We devised a new testing procedure, namely the Weibullness test, that statistically measures how much the series under investigation (inter-arrival times of the received packets) fits Weibull vs. non-Weibull models. This is equivalent to differentiating between the cases of legitimate and covert data communications. The achieved results show the robustness of this innovative test versus the conventional shape and regularity tests, even in presence of short-lived covert communications for intrusion detection in data communications.
Weiterentwicklung eines E-Learning-Angebots für eine Weiterbildung von Berufstätigen aus dem sozialen und technischen Bereich unter Berücksichtigung von Spielmechaniken.Löffler, B.; Heußner, M.; Radziwill, M.; Schmidt, L. In Technologie und Vernetzung für Gesundheit, Selbstständigkeit und Komfort: 8. AAL-Kongress (Frankfurt 2015), Verband der Elektrotechnik Elektronik Informationstechnik e. V. (ed.), pp. 286–291. VDE-Verlag, Berlin, 2015.
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Im Projekt "TAAndem - AAL-Weiterbildung im Tandem" wurde unter anderem ein E-Learning-Angebot auf Basis der Software-Umgebung Moodle entwickelt. Damit haben Teilnehmende einer Weiterbildung die Möglichkeit, sich Unterlagen zu den während der Präsenztage behandelten Themeneinheiten herunterzuladen und sich über ein Forum auszutauschen. Ein Lernspiel ist ebenfalls Bestandteil der Plattform: Hier werden die Teilnehmenden als Spieler aufgefordert, ältere Menschen über Ambient Assisted Living (AAL) in Form von Fallbeispielen zu beraten. Die Weiterbildung wurde im Frühjahr 2014 in Form eines Pilotdurchlaufs zum ersten Mal mit 18 Teilnehmenden durchgeführt. Beobachtungen, persönliches Feedback und Fragebogenerhebungen haben ergeben, dass das E-Learning-Angebot nur gelegentlich genutzt wurde und Verbesserungspotential aufweist. Unter Berücksichtigung von Spielemechaniken, die - bei richtiger Anwendung - eine stärkere Bindung zum E-Learning-Angebot herstellen, wurde die Lernplattform überarbeitet. Hierzu wurden die Motivatoren der Teilnehmenden zunächst analysiert und anschließend Spielertypen zugeordnet. In diesem Beitrag wird das überarbeitete E-Learning-Angebot vorgestellt, das neben den Spielmechaniken nutzergerecht angepasst wurde.
Interdisciplinary Design Patterns for Socially Aware Computing.Baraki, Harun; Geihs, Kurt; Voigtmann, Christian; Hoffmann, Axel; Kniewel, Romy; Macek, Björn-Elmar; Zirfas, Julia. In The 37th International Conference on Software Engineering (ICSE), Software Engineering in Society (SEIS) track. ACM/IEEE, 2015.
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The success of software applications that collect and process personal data does not only depend on technical aspects, but is also linked to social compatibility and user acceptance. It requires experts from different disciplines to ensure legal compliance, to foster the users' trust, to enhance the usability of the application and to finally realize the application. Multidisciplinary requirements have to be formulated, interwoven and implemented. We advocate the use of interdisciplinary design patterns that capture the design know-how of typical, recurring features in socially aware applications with particular concern for socio-technical requirements. The proposed patterns address interdisciplinary concerns in a tightly interwoven manner and are intended to facilitate the development of accepted and acceptable applications that in particular deal with sensitive user context information.
Beschreibung von wiederverwendbaren Prozessen zur Erreichung von Lernzielen in Serious Games.Hirdes, Eike M. In Research on IT / Service / Innovation / Collaboration, 7. Kassel University Press (978-3-7376-0044-6), Kassel, Germany, 2015.
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Das versteckte Internet.Karaboga, Murat; Matzner, Tobias; Morlok, Tina; Nebel, Maxi; Pittroff, Fabian; Ochs, Carsten; von Pape, Thilo; Pörschke, Julia V.; Schütz, Philip; Simo Fhom, Hervais. F. Privatheit (ed.). 2015.
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Verfügungsrechte an fahrzeugbezogenen Daten. Das vernetzte Automobil zwischen innovativer Wertschöpfung und Persönlichkeitsschutz.Hornung, Gerrit. In Datenschutz und Datensicherheit, pp. 359–366. 2015.
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Die Krypto-Debatte: Wiederkehr einer Untoten.Hornung, Gerrit. In Editorial, Multimedia und Recht 3/2015, pp. 145–146. 2015.
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Zwischen Rechtssicherheit und Persönlichkeitsschutz. Rechtsfragen des Identitätsmanagements.Hornung, Gerrit. In Wolken über dem Rechtsstaat? Recht und Technik des Cloud Computing in Verwaltung und Wirtschaft, A. Roßnagel (ed.), pp. 189–216. Nomos, 2015.
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Parlamentarisches Kontrollgremium und G 10-Kommission.Hornung, Gerrit. In Parlamentsrecht. Praxishandbuch, M. Morlok, U. Schliesky, D. Wiefelspütz (eds.), pp. 928–958. Nomos, 2015.
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Grundrechtsinnovationen. Hornung, Gerrit. In of Jus Publicum. Mohr Siebeck, 2015.
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Neue Pflichten für Betreiber Kritischer Infrastrukturen: Das IT-Sicherheitsgesetz des Bundes.Hornung, Gerrit. In Neue Juristische Wochenschrift, (46), pp. 3334–3340. 2015.
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Chancen und Risiken der Biometrie aus rechtlicher Sicht: Grundlagen und aktuelle Herausforderungen.Hornung, Gerrit. In Sonderbeilage 3/2015 der Zeitschrift für Wett- und Glücksspielrecht, pp. 8–14. 2015.
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Datenschutzrechtliche Aspekte der Social Media.Hornung, Gerrit. In Rechtshandbuch Social Media, G. Hornung, R. Müller-Terpitz (eds.), pp. 79–130. Springer, 2015.
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„Data Ownership“ im vernetzten Automobil. Die rechtliche Analyse des wirtschaftlichen Werts von Automobildaten und ihr Beitrag zum besseren Verständnis der Informationsordnung.Hornung, Gerrit; Goeble, Thilo. In Konsumentenpolitisches Jahrbuch 2015. Trends, Rechtsentwicklung und Judikatur der letzten zwei Jahre, M. Reiffenstein, B. Blaschek (eds.), pp. 59–81. elibrary, 2015.
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Rechtliche Probleme des Datenschutzes und der Kontrollierbarkeit persönlicher Daten.Hornung, Gerrit; Hofmann, Kai. In Digitalisierung industrieller Arbeit, H. Hirsch-Kreinsen, P. Ittermann, J. Niehaus (eds.), pp. 165–182. Nomos, 2015.
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Rechtliche Herausforderungen des Internets der Dinge.Hornung, Gerrit; Hofmann, Kai. In Internet der Dinge. Über smarte Objekte, intelligente Umgebungen und die technische Durchdringung der Welt, F. Sprenger, C. Engemann (eds.), pp. 181–203. transcript, 2015.
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Engineering Tool Supported Collaboration Processes for Web-based Platforms.Kipp, Philipp. In Research on IT / Service / Innovation / Collaboration, 9. Kassel University Press (978-3-86219-968-6), Kassel, Germany, 2015.
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Is Web Content a Good Proxy for Real-Life Interaction? A Case Study Considering Online and Offline Interactions of Computer Scientists.Kibanov, Mark; Atzmueller, Martin; Illig, Jens; Scholz, Christoph; Barrat, Alain; Cattuto, Ciro; Stumme, Gerd. In Proceedings of the 2015 ACM/IEEE International Conference on Advances in Social Networks Analysis and Mining, ASONAM 2015, Paris, France, August 25-28, 2015. 2015.
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Today, many people spend a lot of time online. Their social interactions captured in online social networks are an important part of the overall personal social profile, in addition to interactions taking place offline. This paper investigates whether relations captured by online social networks can be used as a proxy for the relations in offline social networks, such as networks of human face-to-face (F2F) proximity and coauthorship networks. Particularly, the paper focuses on interactions of computer scientists in online settings (homepages, social networks profiles and connections) and offline settings (scientific collaboration, face-to-face communications during the conferences). We focus on quantitative studies and investigate the structural similarities and correlations of the induced networks; in addition, we analyze implications between networks. Finally, we provide a qualitative user analysis to find characteristics of good and bad proxies.
How Collaboration Engineering can Improve Team Effectiveness of Heterogeneous Groups.Bittner, Eva. In Research on IT / Service / Innovation / Collaboration, 5. University Press (978-3-86219-928-0), Kassel, Germany, 2015.
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TAAndem.Heußner, M.; Löffler, B.; Ackermann, L.; Thillainathan, N.; Prinz, A.; Schmidt, L.; Leimeister, J. M. Fachgebiet Mensch-Maschine-Systemtechnik und Fachgebiet Wirtschaftsinformatik der Universität Kassel, 2015.
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In diesem Dokument werden die Ergebnisse und Erkenntnisse aus dem Forschungsprojekt "AAL-Weiterbildung im Tandem (TAAndem)" vorgestellt. Im Rahmen des Forschungsprojekts wurde eine gemeinsame berufliche Weiterbildungsmaßnahme in Form von Blended Learning für Personen sowohl aus pflegerischen bzw. sozialen Berufen als auch aus handwerklichen bzw. technischen Berufen konzipiert und erprobt. Es konnte gezeigt werden, dass der aus dem Sprachenlernen bekannte Tandemlernansatz im Kontext von Ambient Assisted Living (AAL) auf unterschiedliche Berufsgruppen übertragen werden kann. Es hat sich gezeigt, dass ein gemeinsames Lernen und die gegenseitige Vernetzung beider Berufsgruppen für die Erschließung des Themas AAL und die Entwicklung von Beratungskompetenz in diesem Themenfeld sehr hilfreich und nützlich sind. Zur Förderung des gemeinsamen Lernens sind verschiedene Konzepte und Materialien entwickelt worden. Dies geschah sowohl für eine Präsenzphase (Vorträge und Übungen für das Lernen im Tandem), als auch für eine Selbstlernphase (E-Learning). So ist für die Selbstlernphase u. a. ein browserbasiertes Lernspiel mit praxisnahen Fallbeispielen und entsprechenden Inhalten entwickelt worden. Zunächst wurden mit möglichen Teilnehmern der TAAndem-Weiterbildung eine Anforderungserhebung durchgeführt und entsprechende Weiterbildungsinhalte entwickelt. Um die einzelnen Konzeptteile der Weiterbildung zu erproben, wurden diese anschließend mit Personen aus der Zielgruppe getestet (u. a. in Form eines AAL-Schnuppertages) und dann anhand der Ergebnisse weiterentwickelt. Zur Evaluation der gesamten Weiterbildung wurde Anfang 2014 ein Pilotdurchlauf mit 18 Teilnehmer(inne)n aus sozialen und technischen Berufen durchgeführt und wissenschaftlich analysiert, u. a. auf Basis verschiedener Teilnehmerbefragungen. Insgesamt konnte der Erfolg des TAAndem-Weiterbildungsansatzes durch die Evaluationsergebnisse nachgewiesen werden. Hinsichtlich einzelner Teilaspekte, z. B. bezogen auf das E-Learning, bestand allerdings noch Überarbeitungsbedarf im Hinblick auf nachfolgende Weiterbildungstermine. Durch das Projekt war es möglich, wichtige grundlegende Hinweise auf die Ausgestaltung von beruflichen Qualifikationsmaßnahmen im Themenfeld AAL zu erlangen, um einen Beitrag zu leisten, langfristig die Akzeptanz von AAL bei den Endnutzern und Berufspraktikern zu steigern. Die Projektergebnisse können für weiterführende Forschungsarbeiten in diesem Themenfeld genutzt werden.
Umweltverträgliche Nutzung des Untergrunds und Ressourcenschonung – Anforderungen an die untertägige Raumordnung und das Bergrecht Dokumentation der Fachtagung am 25. November 2014. Hentschel, Anja; Roßnagel, Alexander. Umweltbundesamt, Kassel, 2015.
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Analysis and Monitoring of Hidden TCP Traffic Based on an Open-Source Covert Timing Channel.Liguori, Angelo; Benedetto, Francesco; Giunta, Gaetano; Kopal, Nils; Wacker, Arno. In 1st IEEE Workshop on Security and Privacy in Cybermatics (SPiCy 2015), held in conjunction with 3rd International Conference on Communications and Network Security (IEEE CNS 2015), pp. 667–674. IEEE, 2015.
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Many contexts dealing with sensitive information require high-robustness and high-assurance certified security systems that should not be affected by known vulnerabilities. Covert channels are illicit paths that could be exploited by attackers to convey illicit data flows that contravene the security policies. Many implementations of the so-called Covert Storage Channels exist, whereas no implementation of Covert Timing Channels is available. In this paper, we first discuss an Open-Source Covert Timing Channel implementation, describing in detail our innovative approach. Then, we analyze real TCP traffic in the presence of our covert channel for three scenarios of interest, varying the number of hops and round trip time of the connections. The results, from real network traffic monitoring, confirm the validity of our open-source covert timing channel implementation for hidden TCP traffic analysis, in different environmental and operating network conditions.
Von den Mühen, sich anzupassen.Henschke, C.; Roßnagel, A. In LanInForm – Magazin für Ländliche Räume, pp. 25 – 27. 2015.
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Bedarfsplanung im Bergbau – Protokoll der Podiumsdiskussion.Henschel, A.; Roßnagel, A. In Umweltverträgliche Nutzung des Untergrunds und Ressourcenschonung – Anforderungen an die untertägige Raumordnung und das Bergrecht. Dokumentation der Fachtagung am 25. November 2014 in Kassel, A. Roßnagel, A. Henschel (eds.), pp. 121–139. Umweltbundesamt, 2015.
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SoftGap: a Multi Independent Levels of Security Cross-Domain Solution.Liguori, Angelo; Benedetto, Francesco; Giunta, Gaetano; Kopal, Nils; Wacker, Arno. In 1st International Workshop on Signal Processing for Secure Communications (SP4SC-2015), held in conjunction with 3rd International Conference on Future Internet of Things and Cloud (FiCloud 2015). IEEE, Rome, Italy, 2015.
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Neue Geschäftsfelder durch Crowdsourcing: Crowd-basierte Start-ups als Arbeitsmodell der Zukunft.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David; Bretschneider, Ulrich. In Arbeit der Zukunft – Möglichkeiten nutzen – Grenzen setzen, R. Hoffmann, C. Bogedan (eds.), pp. 141–158. Campus Verlag, Frankfurt am Main, 2015.
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Crowdsourcing und Crowd Work - Neue Formen digitaler Arbeit.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David; Blohm, Ivo. In Mensch 2020 - transdisziplinäre Perspektiven, A. Bullinger (ed.), pp. 119–124. Verlag aw&I Wissenschaft und Praxis, Chemnitz, 2015.
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Mobile Work Support for Field Service: A Literature Review and Directions for Future Research.Herterich, Matthias; Peters, Christoph; Neff, Alexander; Uebernickel, Falk; Brenner, Walter. In 12th International Conference on Wirtschaftsinformatik. Osnabrück, Germany, 2015.
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Design Principles for the Productive Delivery of Blended Learning Services.Bitzer, Philipp. In Research on IT / Service / Innovation / Collaboration, 8. Kassel University Press (978-3-86219-940-2), Kassel, Germany, 2015.
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Das TANDEM-Konzept zur Unterstützung des Wissenstransfers in altersdiversen Arbeitsgruppen.Bittner, Eva Alice Christiane; Leimeister, Jan Marco. In Exploring Demographics - Transdisziplinäre Perspektiven zur Innovationsfähigkeit im demografischen Wandel, S. Jeschke, A. Richert, F. Hees, C. Jooß (eds.), pp. 371–382. Springer Spektrum, Wiesbaden, Germany, 2015.
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New Forms of Employment And IT - Crowdsourcing.Leimeister, Jan Marco; Zogaj, Shkodran; Durward, David. In 4th Conference of the Regulating for Decent Work Network. Genf, Schweiz, 2015.
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Forschungsprojekt Robotair: Praxistaugliches Boden-Luft-Servicerobotersystem für die Inspektion industrieller Druckluftversorgung und die Verbesserung der Arbeitsumgebungsfaktoren.Hegenberg, J.; Herrmann, R.; Ziegner, D.; Schmidt, L.; Günther, T.; Ordoñez Müller, A.; Kroll, A.; Barz, T.; Schulz, D. In Technische Sicherheit, 5(5), pp. 16–22. 2015.
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Ziel des Projekts ist die Entwicklung und Evaluation eines prototypischen, kostengünstigen Boden-Luft-Servicerobotersystems für die Detektion und Ortung von Druckluftlecks und Isolationsschäden an Prozessöfen sowie für die Kartierung von Arbeitsumgebungsfaktoren. Dies dient einer nachhaltigen Ressourcen- und Energienutzung und trägt zur Sicherstellung gesunder Arbeitsbedingungen und zur Steigerung der Produktivität bei. Das System besteht aus einem teleoperiert fliegenden und einem teilautonom fahrenden Roboter, die beide mit intelligenten Multisensor-Modulen ausgestattet sind, sowie einem mobilen Leitstand. Dort wird aus den Sensorsignalen ein aussagekräftiges Lagebild erstellt und visualisiert. Ein Überblick über das System wird abgerundet von ersten Erprobungsergebnissen.
AAL-Weiterbildung für Pflege und Handwerk: Ergebnisse des ersten Pilotdurchlaufs.Heußner, M.; Löffler, B.; Schmidt, L. In Technologie und Vernetzung für Gesundheit, Selbstständigkeit und Komfort: 8. AAL-Kongress (Frankfurt 2015), Verband der Elektrotechnik Elektronik Informationstechnik e. V. (ed.), pp. 254–259. VDE-Verlag, Berlin, 2015.
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Im Frühjahr 2014 fand der erste Pilotdurchlauf der TAAndem-Weiterbildung statt, die derzeit im Rahmen des gleichnamigen und vom BMBF geförderten Projektes "TAAndem - AAL-Weiterbildung im Tandem" entwickelt wird. Ziel des Projektes ist, Personen aus unterschiedlichen Berufsbereichen (hier Personen aus technischen und Personen aus sozialen Berufen), die zukünftig beruflich mit Ambient Assisted Living (AAL) arbeiten werden, durch die Weiterbildung zusammenzubringen, so dass diese beiden Berufsgruppen von und miteinander zum Thema lernen können. Im Projekt wird das sog. Tandemlernen, welches aus dem Fremdsprachenlernen bekannt ist, adaptiert, da davon auszugehen ist, dass beide Berufsgruppen von ihrem bisher (im Beruf) erworbenen Wissen profitieren können. Für die Realisierung der Weiterbildung wird ein Blended-Learning-Ansatz verfolgt, bei dem Präsenzlehre durch ein E-Learning-Angebot zum Selbstlernen ergänzt wird. Die Ergebnisse des ersten Durchlaufs werden in diesem Artikel vorgestellt.
Dienstleistungen von der Crowd: Crowdsourcing und Crowd Work.Leimeister, Jan Marco; Zogaj, Shkodran; Blohm, Ivo. In Service Today, Portfolio-Management im Service, pp. 32–34. KVD - Der Service Verband, Dorsten, 2015.
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In TANDEMs zu Innovationen - Förderung der Zusammenarbeit in altersgemischten Teams.Bittner, Eva; Ebel, Philipp; Habicht, Hagen; Leimeister, Jan Marco; Möslein, Kathrin; Plieth, Hanna. In Praeview - Zeitschrift für innovative Arbeitsgestaltung und Prävention, 6, R. Klatt (ed.), pp. 16–17. 2015.
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Untersuchung eines Alterssimulationsanzugs mittels geriatrischer Bewegungstests und Ganganalyse.Heußner, M.; Löffler, B.; Schmidt, L. In VerANTWORTung für die Arbeit der Zukunft: 61. Kongress der Gesellschaft für Arbeitswissenschaft (Karlsruhe 2015), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 1–6 (B.2.5). GfA-Press, Dortmund, 2015.
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Um ein höheres Alter von Arbeitspersonen bei der Arbeitsgestaltung prospektiv zu berücksichtigen, werden bspw. Alterssimulationsanzüge entwickelt. Diese schränken u. a. Mobilität und Beweglichkeit ein. Aktuell sind verschiedene Anzüge auf dem Markt verfügbar. Offen ist häufig, ob diese tatsächlich alterstypisch einschränken. Am Beispiel eines Alterssimulationsanzuges mit flexiblen Gurten werden zwei Testverfahren angewendet. Die Ergebnisse von zwei geriatrischen Tests zeigen, dass die Messgrößen sich beim Tragen des Anzuges signikant verschlechtern. Auch die Ganganalyse eines Probanden legt nahe, dass der Anzug alterstypisch einschränkt, was anhand der Schrittlänge und einem weniger dynamischen Bewegungsverlauf sichtbar ist.
Verbraucherinformationen zu Lebensmitteln – die neue Lebensmittelinformationsverordnung.Hentschel, Anja. In Verbraucher und Recht, pp. 55–59. 2015.
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2014[ to top ]

Crowdwork - digitale Wertschöpfung in der Wolke: Ein Überblick über die Grundlagen, die Formen und den aktuellen Forschungsstand.Leimeister, Jan Marco; Zogaj, Shkodran; Blohm, Ivo. In Crowdwork - zurück in die Zukunft? Perspektiven digitaler Arbeit, C. Benner (ed.), pp. 9–41. Bund-Verlag, Frankfurt am Main, 2014.
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Verschlüsseltes Cloud Computing – Auswirkung der Kryptografie auf den Personenbezug in der Cloud.Kroschwald, S. In Zeitschrift für Datenschutz (ZD), pp. 75–80. 2014.
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CrypTool 2.0. Open-Source Kryptologie für Jedermann.Kopal, Nils; Kieselmann, Olga; Wacker, Arno; Esslinger, Bernhard. In Datenschutz und Datensicherheit (DuD), (10/2014), pp. 701–708. 2014.
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Die Lernsoftware CrypTool 2.0 bietet Schülern, Studierenden und Kryptologie-Begeisterten einen einfachen Zugang in die Welt der Kryptographie und der Kryptoanalyse. Nach siebenjähriger Entwicklungszeit hat das CrypTool-2-Team die erste „Release-Version“ veröffentlicht. CrypTool 2.0 wird schon jetzt in Schulen, Hochschulen, Unternehmen und Behörden zur Ausbildung und Awareness-Bildung eingesetzt. Es ist Open-Source und kann von jedermann frei genutzt werden. CrypTool 2.0 beinhaltet eine Vielzahl von Verschlüsselungs- und Analyseverfahren, um deren Sicherheit im Selbststudium oder während eines Kryptologiekurses kennen zu lernen. Innerhalb dieses Artikels erhält der Leser einen kurzen Einblick in das CrypTool-Projekt und einen tiefergehenden in die Software CrypTool 2.0.
Rechtsfragen kooperativer Prozessmodellierung am Beispiel der Trinkwasserhausanschlusserstellung sowie der Hydrantenprüfung des Zweckverbandes Grevesmühlen. Kroschwald, S.; Wicker, M.; Roßnagel, A. Kassel, 2014.
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Virtual Communities: An Introduction.Leimeister, Jan Marco; Rajagopalan, Balaji. In Virtual Communities: Advances in Management Information Systems, J. M. Leimeister, B. Rajagopalan (eds.). M.E. Sharpe, Armonk, NY (ISBN: 978-0-7656-2653-0), 2014.
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Vertrauensleitfaden für Cloud-Computing-Dienste: Ein Leitfaden zur Förderung von Vertrauen durch die Gestaltung der Online-Produktpräsentation. Leimeister, Jan Marco; Söllner, Matthias; Gebauer, Lysann. Chair for Information Systems, Kassel University, Kassel, Germany, 2014.
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Im Sinne des Dienstleistungsengineerings und -managements unterstützt der Leitfaden die vertrauensförderliche Gestaltung von Dienstleistungen. Der Leitfaden richtet sich an Unternehmen, die Cloud- Computing-Dienste anbieten und das Vertrauen der Kunden in den Dienst als auch in den Anbieter selbst über die Online-Produktpräsentation aktiv fördern möchten. Das Vertrauen soll hierbei sowohl in den Anbieter als auch in die zu Grunde liegende Technik, also Cloud- Computing, gestärkt werden. Der Leitfaden wurde auf Grundlage eines wissen- schaftlichen Vorgehens zur systematischen Vertrauensförderung entwickelt, welches sich bereits zur Vertrauensförderung bei verschiedenen IT-Systemen bewährt hat.
A new context: Screen to face distance.König, Immanuel; Beau, Philipp.; David, Klaus. In 8th International Symposium on Medical Information and Communication Technology (ISMICT), pp. 1–5. IEEE, Florence, Italy, 2014.
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Most would agree: human vision is the most important of the five senses. Tragically many elderly people lose their vision due to incurable diseases which could have been avoided if diagnosed early enough. Fortunately some of these diseases can be diagnosed or at least have their symptoms detected with the use of simple tests. The use of smartphone or tablet applications have become common for these tests, so eye diseases can be detected early and even at home. However, none of the smartphone or tablet applications considers the screen to face distance of a person doing an eye test to be an important parameter for these sorts of tests. In this paper we present an algorithm to derive a new context: the smartphone user's screen to face distance. Our algorithm utilizes the smartphone front camera and an eye detection algorithm. After initializing the algorithm with person specific values, the algorithm continuously measures the eye to eye distance to derive the user's actual screen to face distance. We also present an investigation on the algorithm accuracy and speed, which shows: a smartphone based screen to face distance measurement is possible in the distance range from 19cm to 94cm with a maximum deviation of 2.1cm and at a rate of three distance measurements per second.
Event Driven Time Synchronization of Mobile Devices.Kroll, Dennis; Kusber, Rico; David, Klaus. In Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct Publication, of UbiComp ’14 Adjunct, A. J. Brush, A. Friday, J. A. Kientz, J. Scott, J. Song (eds.), pp. 451–457. ACM, Seattle, Washington, USA, 2014.
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Mobile devices are increasingly used for context recognition. Recognition accuracies partly depend on the time synchronicity between the mobile devices used for data recording and labeling. Mobile device synchronization can be done via the Internet or GPS, but both are not available in all areas. This paper presents our novel approach "Event Driven Time Synchronization of Mobile Devices" that works anytime, anywhere. The idea is to trigger sensor events on each device as much as possible at the same time. The time difference of the sensor event occurrences is interpreted as the time difference between the devices, called time offset between the devices. Our prototype utilizes proximity events to enable this. Our evaluation shows that 99% of the time offsets vary not more than 60 ms. Compared to this, only 17% are within this variance when using Network Time Protocol via a mobile High Speed Downlink Packet Access Internet connection.
Rechtsgestaltung mit der Methode KORA.Kahlert, A. In Datenschutz und Datensicherheit (DuD), pp. 86–92. 2014.
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Sozialversicherungswahlen via Internet – Eine Chance zur Erhöhung der Wahlbeteiligung?Kahlert, Anna. In Neue Zeitschrift für Sozialrecht (NZS), pp. 56–61. 2014.
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Usability-Anforderungsmuster für die Entwicklung von Software-Applikationen.Koch, M.; Hoffmann, A.; Hoffmann, H. In Working Paper Series, Nr. 6. Kassel, Germany, 2014.
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Die Datenweitergabe im Rahmen des Cloud Computings unter besonderer Betrachtung von Unterauftragsverhältnissen.Maier, Natalie. In Forum Wirtschaftsrecht, 19, kassel university press (ed.). 2014.
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Benutzeranforderungen an die Benachrichtigungsform von Informations- und Mobilitätsdiensten in kontextsensitiven, adaptiven Smartphone-Applikationen.Kniewel, R.; Radziwill, M.; Evers, C.; Schmidt, L. In Useware 2014: Interaktionen mit großen Datenmengen und unscharfen Analyseergebnissen (Heilbronn 2014), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 121–131. VDI-Verlag, Düsseldorf, 2014.
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Kontextsensitive, adaptive Smartphone-Applikationen sind dazu in der Lage, auf Basis von Sensordaten die aktuelle Situation des Nutzers zu berücksichtigen und sich dynamisch an Kontextänderungen anzupassen um den Nutzer immer bestmöglich bei seinen Aufgaben zu unterstützen. Durch Benachrichtigungen begleitete Adaptionsvorgänge können eine Möglichkeit sein, Dienste kontextsensitiver Smartphone-Applikationen gebrauchstauglich und akzeptiert einzubinden. Aus dem Gestaltungsrahmen für Benachrichtigungen, der durch die Prinzipien Transparenz und Steuerbarkeit aufgespannt wird, wurden relevante Varianten ausgewählt und im Rahmen einer szenario-basierten Studie 52 Probanden präsentiert. Die Probanden sollten erläutern, welche Variante sie für welchen Dienst im zuvor erlebten Evaluationsszenario präferieren würden. Die Auswertung der Erläuterungen nach Maßgabe der Grounded Theory umfasst 975 Einzelaussagen. Es ergeben sich mitunter eindeutige Benutzeranforderungen an einen Navigationsdienst zum pünktlichen Navigationsbeginn, einen Innenraumnavigationsdienst zur Fortführung der Navigationsaufgabe in einem öffentlichen Gebäude, einen Informationsdienst, der während der Teilnahme an einer öffentlichen Veranstaltung angeboten wird sowie einen Umgebungsdienst ohne Aufgaben-bezug. Einen starken Einfluss auf die Präferenz kann den Aspekten Aufgaben-angemessenheit und Steuerbarkeit der Benachrichtigung zugeschrieben werden. Die Ergebnisse dieses Beitrags sollen die Auswahl einer geeigneten Benachrichtigung für Adaptionsvorgänge kontextsensitiver Smartphone-Applikationen unterstützen.
User collaboration for idea elaboration.Kipp, Philipp; Bittner, E. A. C.; Bretschneider, Ulrich; Leimeister, Jan Marco. In Mulitkonferenz Wirtschaftsinformatik (MKWI). Paderborn, Germany, 2014.
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Theory-Driven Design of a Mobile-Learning Application to Support Different Interaction Types in Large-Scale Lectures.Lehmann, Katja; Söllner, Matthias. In European Conference on Information Systems (ECIS). SSRN, Tel Aviv, Israel, 2014.
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Universities face increasing numbers of students leading to increasingly large lectures, and decreasing interaction and collaboration, which are important factors for learning success and satisfaction. The use of IT can help overcoming this challenge by increasing the interaction in large-scale lectures without massively increasing the workload of lecturers. In this research-in-progress paper, we present the design and pre-test of a mobile-learning application aiming to increase the interaction in large-scale lectures and the learning success of learners. For designing our application, we follow a design science research approach. We rely on insights from interaction theory as well as requirements gathered from lecturers and students in a focus group workshop. A pre-test of our application showed high values for Perceived Usefulness, User Satisfaction, and Perceived Presentation Quality for the overall application and moreover high values for Performance Expectancy and Intention to Use of all but one functions. The results show that the application is ready for being used in large-scale lectures. As a next step, the application will be used in one of our large-scale lectures aiming to evaluate whether using our application has a positive impact on interaction, satisfaction and learning success.
Ranking Cryptographic Algorithms.Kieselmann, Olga; Kopal, Nils; Wacker, Arno. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 151–171. Springer, Berlin, 2014.
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In many applications of our daily life information security plays a key role. This applies even stronger for ubiquitous computing applications where a multitude of sensors and actuators observe and control our physical environment. When developing such applications a software engineer usually relies on well-known cryptographic mechanisms like encryption or hashing. However, due to the multitude of existing cryptographic algorithms it can be challenging to select an adequate and secure one. A software engineer is not necessarily also an information security expert and, therefore, it is not obvious which one offers enough security. A general method to rank cryptographic algorithms by their strengths would mitigate this problem. With the availability of such a ranking a software engineer can either look up the current ranking of an algorithm or perform the ranking himself to determine the current strength of such an algorithm. In this chapter we present a novel method to rank cryptographic algorithms with respect to their current strengths. We evaluate our method by applying it to existing cryptographic algorithms.
A Service Engineering Method for Knowledge-Intense Person-Oriented Services.Meschner, Philipp. In Research on IT / Service / Innovation / Collaboration, 4. Kassel University Press (978-3-86219-794-1), Kassel, Germany, 2014.
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Temporal Evolution of Contacts and Communities in Networks of Face-to-Face Human Interactions.Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd. In Science China Information Sciences, 57(3). Science China Press, 2014.
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Temporal dynamics of social interaction networks as well as the analysis of communities are key aspects to gain a better understanding of the involved processes, important influence factors, their effects, and their structural implications. In this article, we analyze temporal dynamics of contacts and the evolution of communities in networks of face-to-face proximity. As our application context, we consider four scientific conferences. On a structural level, we focus on static and dynamic properties of the contact graphs. Also, we analyze the resulting community structure using state-of-the-art automatic community detection algorithms. Specifically, we analyze the evolution of contacts and communities over time to consider the stability of the respective communities. Furthermore, we assess different factors which have an influence on the quality of com- munity prediction. Overall, we provide first important insights into the evolution of contacts and communities in face-to-face contact networks.
Solving the Double Transposition Challenge with a Divide and Conquer Approach.Lasry, George; Kopal, Nils; Wacker, Arno. In Cryptologia, 38, pp. 197–214. 2014.
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The double transposition cipher was considered to be one of the most secure types of manual ciphers. It was extensively used in both World Wars and during the Cold War. In 1999, Otto The double transposition cipher was considered to be one of the most secure types of manual ciphers. It was extensively used in both World Wars and during the Cold War. In 1999, Otto Leiberich, the former head of the German federal office for information security, suggested that a double transposition challenge be published with specific parameters designed to ensure its security. Such a challenge was published by Klaus Schmeh in 2007. In November 2013 we solved the challenge using a ciphertext only hill climbing attack. We also solved the challenge using a dictionary attack. In this paper we describe both methods, which are based on a "divide and conquer" approach. We additionally discuss the impact of our solutions with respect to the general security of the double transposition cipher.
Crowdsourcing – Neue globale Wertschöpfungskonzepte.Leimeister, Jan Marco; Zogaj, Shkodran. In Dienstleistung in der digitalen Gesellschaft – Beiträge zur Dienstleistungstagung des BMBF im Wissenschaftsjahr 2014, A. Boeas (ed.), pp. 211–221. Campus Verlag, Frankfurt am Main (ISBN: 978-3-593-50250-2), 2014.
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Service Engineering Plus – Systematische Gestaltung personenbezogener Dienstleistungen.Menschner, Philipp; Prinz, Andreas; Leimeister, Jan Marco. In Personenbezogene Dienstleistungen im Kontext komplexer Wertschöpfungssysteme – Anwendungsfeld „seltene Krankheiten“, M. Geiger, D. Bieber (eds.). Gabler Verlag, Wiesbaden, Germany, 2014.
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Self-Organized Volunteer Computing.Kopal, Nils; Kieselmann, Olga; Wacker, Arno. In Organic Computing: Doctoral Dissertation Colloquium 2014, Vol. 4, B. Sick, S. Tomforde (eds.), pp. 129–139. Kassel University Press GmbH., 2014.
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In this paper, we present two new algorithms for distributed volunteer computing. Both algorithms have in common, that they are self-organized. Due to the self-* properties of our algorithms, the reliability of the distributed computing is increased. The network, which builds the basis for the distribution, is an unstructured peer-to-peer (p2p) network. Since there is no central managing unit and no structured addressable overlay in such networks, each peer has to self-organize the job selecting process, the distribution of jobs, and the merging of finished jobs obtained from neighbors. After presenting our two algorithms, namely the Epoch-Distribution-Algorithm and the Sliding-Window-Distribution-Algorithm, we present open questions. Since these algorithms are strongly based on self-organization and peers are working absolute autonomously and other some self-* properties, the algorithms can be classified into to world of the organic computing.
Handbuch der Soziologie. Lamla, Jörn; Laux, Henning; Rosa, Hartmut; Strecker, David. UVK (Reihe: UTB), Konstanz, 2014.
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Potential der Simulation von Einschränkungen mit Hilfe eines Alterssimulationsanzuges für arbeitsplatzgestaltende Maßnahmen in einer älter werdenden Gesellschaft.Löffler, B.; Schmidt, L. In Forum Arbeitsphysiologie: 18. Symposium Arbeitsmedizin und Arbeitswissenschaft für Nachwuchswissenschaftler (Magdeburg 2014), I. Böckelmann, A. Lorenz, S. Sammito, S. Darius (eds.), p. 25. Otto-von-Guericke-Universität Magdeburg, 2014.
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Hintergrund / Zielsetzung: In vielen industrialisierten Ländern verändert sich die Bevölkerungsstruktur: Die geburtenstarken Jahrgänge der Nachkriegszeit werden in einigen Jahren aus dem Erwerbsleben ausscheiden. Die nachfolgende Generation, zahlenmäßig unterlegen, wird auf Grund der wirtschaftlichen Entwicklungen und den Herausforderungen zur Finanzierung der Renten mindestens bis in ihr 67stes Lebensjahr berufstätig sein. Um diesen Veränderungen Rechnung zu tragen, sind Arbeitsplätze so zu gestalten, dass sie auch für Menschen in fortgeschrittenem Alter geeignete Arbeitsbedingungen bieten. Eine Möglichkeit die ergonomischen Anforderungen Älterer zu überprüfen, ist die Verwendung von Alterssimulationsanzügen, die u. a. Mobilitätseinschränkungen bei noch nicht eingeschränkten Personen simulieren. Ziel dieses Beitrages ist es, einen ersten Ansatz für eine wissenschaftliche Belegung eines Alterssimulationsanzuges mit flexiblen Gurten zu liefern. Wichtig ist dabei die Frage, in wie fern und in welchem Maße er Einschränkungen simuliert. Hintergrund ist die Fragestellung, ob sich Alterssimulationsanzüge als Werkzeug z. B. für die Gestaltung von Arbeitsplätzen eignen. Methode: In einem ersten Versuch wurden die Einschränkungen beim Gehen in Schrittgeschwindigkeit untersucht. Hierzu wurde eine 3,5 m lange Strecke mit und ohne Anzug von jeweils zwei Probanden abgegangen und die Bewegungen mit Hilfe eines Motion-Tracking-Systems (ARTtrack 2) aufgezeichnet und verglichen. Ausgewertet wurden Parameter aus der Ganganalyse. Diese umfassten den Gangzyklus und die Winkelverläufe von Hüfte, Knie und Sprunggelenk. Ergebnisse: Erste Ergebnisse zeigen, dass der Anzug zu einem alterstypischen, pathologischen Gangbild führt. Typisch ist z. B. die Minimierung der Schrittlänge. Der Knieflexionswinkel weist mit Anzug eine höhere Amplitude auf, da der Anzug ein Durchstrecken der Knie verhindert. Unterschiede in der Gurtlänge von linker zu rechter Seite wirken sich auf die Winkel aus. Diskussion / Schlussfolgerungen: Ob auch andere Mobilitätseinschränkungen und eine graduelle Einstellung von "etwas eingeschränkt" bis "sehr eingeschränkt" möglich ist, muss in weiteren Versuchen ermittelt werden.
Öffentlichkeit: Soziologie, Zeitdiagnose und Gesellschaftskritik.Lamla, Jörn. In Handbuch der Soziologie, J. et al. Lamla (ed.), pp. 491–505. UVK (Reihe: UTB), Konstanz, 2014.
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Predicting the Stability of User Interaction Ties in Twitter.Macek, Bjoern-Elmar; Atzmueller, Martin; Stumme, Gerd. In Proc. I-KNOW 2014. ACM Press, New York, NY, USA, 2014.
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Experimentelle Überprüfung des Effekts von Diversitätsüberzeugungen in Arbeitsteams auf innovative Leistung.Kissel, Dorothea; Ohly, Sandra; Ebel, Philipp; Leimeister, Jan Marco. In G-Forum. Oldenburg, 2014.
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Research Program “Digital Business & Transformation HSG“.Leimeister, J. M.; Winter, R.; Brenner, W.; Jung, R. In Working Paper Services of University of St.Gallen’s Institute of Information Management, No. 1. St. Gallen, Switzerland, 2014.
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White Paper Selbstdatenschutz.Karaboga, Murat; Masur, Philip; Matzner, Tobias; Mothes, Cornelia; Nebel, Maxi; Ochs, Carsten; Schütz, Philip; Simo Fhom, Hervais. Z. Quinn/Lamla/Roßnagel/Trepte/Waidner (ed.). 2014.
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Collaboration Engineering - IT-gestützte Zusammenarbeitsprozesse systematisch entwickeln und durchführen. Leimeister, Jan Marco. Springer, Berlin Heidelberg, Germany, 2014.
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Designing Usable Adaptations.Kniewel, R.; Evers, C.; Schmidt, L.; Geihs, K. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 211–232. Springer, Cham, 2014.
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Ubiquitous computing systems are able to adapt their functionality, behaviour, and interface characteristics according to the user’s context. The user’s context is computed by e.g. sensor data, data about the user’s current activity, or the environment. By performing adaptations, these systems attempt to adequately support users in accomplishing their tasks in any situation. However, adaptations that impact the user interface, e.g. by integration of services, may cause usability problems, for example when they disrupt the user in accomplishing a task. There is no established set of guidelines or comprehensive design solutions to overcome potential usability problems in adaptive applications. In this chapter we present our notification-based design approach, which was beneficial to design usable adaptations for the adaptive application Meet-U. We analyse the results of a user study with 52 potential users in which we have evaluated the usability of our notification-based design solutions. We identified suitable design solutions for five different adaptations providing different supportive services in different contexts of use. These services are: navigational services, event services, a device muting service, and an environmental service. We also exposed the general requirement for a task-specific and context-specific design for adaptations.
Design and Evaluation of a Further Education for Persons Working in AAL Context.Heußner, M.; Löffler, B.; Schmidt, L. In Biomedical Engineering, 59(S1), pp. S447-S450. 2014.
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The aim of the TAAndem-project is to develop a common further education for people from different kinds of professions within the context of "Ambient Assisted Living" (AAL). The further education is addressed to geriatric nurses and craftsmen. The didactic method of tandem learning is applied, so people from various working fields can learn with and from each other. In this paper we will present our concept and the steps of development following the user centred design. Different aspects of the further education that are essential for the upcoming pilot run were tested among potential participants. Methods used were requirement analysis, questionnaire surveys, qualitative expert evaluations and empirical observations. The main result is that the didactic method of tandem learning is suitable for transmitting knowledge to our target group. Several results are given in the following article.
Interdisciplinary Design of Socio-technical Ubiquitous Systems. David, K.; Geihs, K.; Leimeister, J.M.; Roßnagel, A.; Schmidt, L.; Stumme, G.; Wacker, A. Berlin, 2014.
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Ubicon and its Applications for Ubiquitous Social Computing.Atzmueller, Martin; Becker, Martin; Kibanov, Mark; Scholz, Christoph; Doerfel, Stephan; Hotho, Andreas; Macek, Bjoern-Elmar; Mitzlaff, Folke; Mueller, Juergen; Stumme, Gerd. In New Review of Hypermedia and Multimedia, 20(1), pp. 53–77. 2014.
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Die VENUS-Entwicklungsmethode: Eine interdisziplinäre Methode für soziotechnische Softwaregestaltung. Atzmueller, Martin; Baraki, Harun; Behrenbruch, Kay; Comes, Diana; Evers, Christoph; Hoffmann, Axel; Hoffmann, Holger; Jandt, Silke; Kibanov, Mark; Kieselmann, Olga; Kniewel, Romy; König, Immanuel; Macek, Björn-Elmar; Niemczyk, Stefan; Scholz, Christoph; Schuldt, Michaela; Schulz, Thomas; Skistims, Hendrik; Söllner, Matthias; Voigtmann, Christian; Witsch, Andreas; Zirfas, Julia. A. Hoffmann; S. Niemczyk (eds.). Research Center for Information System Design (ITeG), University of Kassel, 2014.
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Requirement Patterns to Support Socio-Technical System Design.Hoffmann, Axel; Söllner, Matthias; Hoffmann, Holger; Leimeister, Jan Marco. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 191–209. Springer International Publishing, Cham, 2014.
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The rise of socio-technical ubiquitous systems integrated into peoples' lives call for the consideration of requirements originating from different domains during requirements engineering. Important aspects are fostering the systems legal compatibility, its usability and users' trust, and hence their acceptance of, the system. To spare requirements analysts from incorporating different experts or interpreting socio-technical literature, we provide a pattern-based approach for the collection of socio-technical requirements. In this chapter we show how requirements analysts can use requirement patterns within the socio-technical system development to consider normative requirements. Therefore, we show a process, and provide advantages and explore under which circumstances requirement patterns can help.
ECML PKDD Discovery Challenge - Recommending Given Names. Doerfel, Stephan; Hotho, Andreas; Jäschke, Robert; Mitzlaff, Folke; Mueller, Juergen. Vol. 1120. CEUR-WS, 2014.
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All over the world, future parents are facing the task of finding a suitable given name for their children. Their choice is usually influenced by a variety of factors, such as the social context, language, cultural background and especially personal taste. Although this task is omnipresent, little research has been conducted on the analysis and application of interrelations among given names from a data mining perspective. Since 1999 the ECML PKDD embraces the tradition of organizing a Discovery Challenge, allowing researchers to develop and test algorithms for novel and real world datasets. The Discovery Challenge 20131 tackled the task of recommending given names in the context of the name search engine Nameling. It consisted of an offline and an online phase. In both phases, participants were asked to create a name recommendation algorithm that could provide suitable suggestions of given names to users of Nameling. More than 40 participants/teams registered for the challenge, of which 17 handed in predictions of the offline challenge. After the end of the offline phase 6 teams submitted a paper. All papers have been peer reviewed and can be found in these proceedings. The different approaches to the challenge are presented at the ECML PKDD workshop on September 27th, 2013, in Prague, Czech Republic. The online challenge ran until the day before the workshop and four teams successfully participated with implementations meeting all required criteria. Details of the two challenge tasks, winners of both phases and an overview of the main findings are presented in the first paper of these proceedings.
Examining the Effect of Different Measurements of Learning Success in Technology-mediated Learning Research.Janson, Andreas; Söllner, Matthias; Bitzer, Philipp; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Auckland, New Zealand, 2014.
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Facilitating Work-Life Balance in an “Always-Online”-Society – Mobile Usage Scenarios and Strategies for a New Communication Paradigm.David, Klaus; Bieling, Gisela; Böhnstedt, Doreen; Jandt, Silke; Ohly, Sandra; Roßnagel, Alexander; Schmitt, Antje; Steinmetz, Ralf; Stock-Homburg, Ruth; Wacker, Arno. In IEEE VT Magazine. 2014.
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Socio-technical Design of Ubiquitous Computing Systems. David, K.; Geihs, K.; Leimeister, J. M.; Roßnagel, A.; Schmidt, L.; Stumme, G.; Wacker, A. Springer, Cham, 2014.
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By using various data inputs, ubiquitous computing systems detect their current usage context, automatically adapt their services to the user’s situational needs and interact with other services or resources in their environment on an ad-hoc basis. Designing such self-adaptive, context-aware knowledge processing systems is, in itself, a formidable challenge. This book presents core findings from the VENUS project at the Interdisciplinary Research Center for Information System Design (ITeG) at Kassel University, where researchers from different fields, such as computer science, information systems, human-computer interaction and law, together seek to find general principles and guidelines for the design of socially aware ubiquitous computing systems. To this end, system usability, user trust in the technology and adherence to privacy laws and regulations were treated as particularly important criteria in the context of socio-technical system design. During the project, a comprehensive blueprint for systematic, interdisciplinary software development was developed, covering the particular functional and non-functional design aspects of ubiquitous computing at the interface between technology and human beings. The organization of the book reflects the structure of the VENUS work program. After an introductory part I, part II provides the groundwork for VENUS by presenting foundational results from all four disciplines involved. Subsequently, part III focuses on methodological research funneling the development activities into a common framework. Part IV then covers the design of the demonstrators that were built in order to develop and evaluate the VENUS method. Finally, part V is dedicated to the evaluation phase to assess the user acceptance of the new approach and applications. The presented findings are especially important for researchers in computer science, information systems, and human-computer interaction, but also for everyone working on the acceptance of new technologies in society in general.
How Social is Social Tagging?Doerfel, Stephan; Zoller, Daniel; Singer, Philipp; Niebler, Thomas; Hotho, Andreas; Strohmaier, Markus. In Proceedings of the Companion Publication of the 23rd International Conference on World Wide Web Companion, pp. 251–252. International World Wide Web Conferences Steering Committee, Seoul, Korea, 2014.
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Social tagging systems have established themselves as an important part in today's web and have attracted the interest of our research community in a variety of investigations. This has led to several assumptions about tagging, such as that tagging systems exhibit a social component. In this work we overcome the previous absence of data for testing such an assumption. We thoroughly study social interaction, leveraging for the first time live log data gathered from the real-world public social tagging system bibs. Our results indicate that sharing of resources constitutes an important and indeed social aspect of tagging.
Creating Shared Understanding in heterogeneous work groups - Why it matters and how to achieve it.Bittner, E. A. C.; Leimeister, J. M. In Journal of Management Information Systems (JMIS), 31(1), pp. 111–143. 2014.
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RoboGasInspector Research Project: Detecting Gas Leaks With Autonomous Mobile Robots.Habib, A.; Bonow, G.; Kroll, A.; Hegenberg, J.; Schmidt, L.; Barz, T.; Schulz, D. In Ex-Magazine, 40, pp. 91–97. 2014.
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Nine project partners developed the prototype of an autonomous mobile robot for detecting gas leaks in extensive industrial plants within the context of the "AUTONOMIK" programme of the German Federal Ministry for Economic Affairs and Energy. The system's autonomous mobility was put into practice using various sensors for auto-localisation and navigation. In addition, it includes an option to intervene manually in the process using teleoperation. Equipped with video and remote gas detection technology, the robot can carry out inspections in industrial plants without having to enter possible hazard areas and without any person present on site. The robot can be used for routine inspection of plants or systematic examination of specific parts of the plant. Using remote metrology technology, it is also possible to inspect parts of the plant that are difficult to inspect using traditional measuring instruments due to limited accessibility.
Towards Interdisciplinary Design Patterns for Ubiquitous Computing Applications. Baraki, Harun; Geihs, Kurt; Hoffmann, Axel; Voigtmann, Christian; Kniewel, Romy; Macek, Björn-Elmar; Zirfas, Julia. Zentrum für Informationstechnik‐Gestaltung (ITeG), 2014.
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To draw on the full potential of Ubiquitous Computing (UC) systems, they have to be designed with awareness for their social embedding in order to increase the user acceptance. To this end, not only the compliance with laws has to be ensured, but also usability-enhancing and trust and confidence-building measures have to be applied. This makes the development of UC applications a challenging task that involves experts from different disciplines. The main contribution of this report is a set of design patterns for UC applications that specifically focus on the interweaving and implementation of multidisciplinary requirements. The patterns capture the design know-how of typical, recurring features in context-aware adaptive UC applications with particular concern for the sociotechnical requirements. First, we present a detailed discussion of the related work on design patterns in the realm of UC. Afterwards, we explain our research methodology and the template structure of our pattern specifications. The core of the report consists of eight interdisciplinary UC design patterns. This initial list of patterns was derived from several application case studies in the interdisciplinary research project LOEWE-VENUS. We view this collection as a starting point for an evolving set of commonly accepted reusable design patterns that facilitate the development of accepted and acceptable UC applications.
Data Mining on Social Interaction Networks.Atzmueller, Martin. In Journal of Data Mining and Digital Humanities, 1. 2014.
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Mining Social Interaction -- Ubiquitous Sensors and Social Media.Atzmueller, Martin. In Proc. International Conference on Future RFID Technologies, pp. 5–13. Eger, Hungary, 2014.
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Internationalization of eLearning – Consideration of Culture-specific Differences of Self-directed Learning Ability.Hammer, Nadine; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Auckland, New Zealand, 2014.
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Service Systems Engineering - A Field for Future Information Systems Research.Böhmann, Tilo; Leimeister, Jan Marco; Möslein, Kathrin M. In Business & Information Systems Engineering, 6(2), pp. 73–79. 2014.
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An Empirical Taxonomy of Crowdfunding Intermediaries.Haas, Philipp; Blohm, Ivo; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Auckland, New Zealand, 2014.
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Of course we Share! Testing Assumptions about Social Tagging Systems. Doerfel, Stephan; Zoller, Daniel; Singer, Philipp; Niebler, Thomas; Hotho, Andreas; Strohmaier, Markus. arXiv.org, 2014.
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Social tagging systems have established themselves as an important part in today's web and have attracted the interest from our research community in a variety of investigations. The overall vision of our community is that simply through interactions with the system, i.e., through tagging and sharing of resources, users would contribute to building useful semantic structures as well as resource indexes using uncontrolled vocabulary not only due to the easy-to-use mechanics. Henceforth, a variety of assumptions about social tagging systems have emerged, yet testing them has been difficult due to the absence of suitable data. In this work we thoroughly investigate three available assumptions - e.g., is a tagging system really social? - by examining live log data gathered from the real-world public social tagging system BibSonomy. Our empirical results indicate that while some of these assumptions hold to a certain extent, other assumptions need to be reflected and viewed in a very critical light. Our observations have implications for the design of future search and other algorithms to better reflect the actual user behavior.
Anforderungsmuster zur Spezifikation soziotechnischer Systeme - Standardisierte Anforderungen der Vertrauenswürdigkeit und Rechtsverträglichkeit.Hoffmann, Axel. In Research on IT / Service / Innovation / Collaboration, 3. Kassel University Press (978-3-86219-716-3), Kassel, Germany, 2014.
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Connect-U: A System for Enhancing Social Networking.Atzmueller, Martin; Behrenbruch, Kay; Hoffmann, Axel; Kibanov, Mark; Macek, Bjoern-Elmar; Scholz, Christoph; Skistims, Hendrik; Söllner, Matthias; Stumme, Gerd. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 261–275. Springer International Publishing, 2014.
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The application of ubiquitous and social computational systems shows a rapidly increasing trend in our everyday environments: Enhancing social interactions and communication in both online and real-world settings is an important issue in a broad range of application contexts. This chapter describes the development of ubiquitous and social software for enhancing social networking. The Connect-U demonstrator features a class of such applications. In particular, it comprises the Conferator and MyGroup applications for enabling smarter social interactions in the context of conferences and working groups. We describe the applied socio-technical design process, and discuss experiences and lessons learned.
From products to product-service systems: IT-driven transformation of a medical equipment manufacturer.Fähling, Jens; Köbler, Felix; Leimeister, Jan Marco; Krcmar, Helmut. In Journal of Information Technology Teaching Cases, (4), pp. 20–26. 2014.
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The User in the Loop: Enabling User Participation for Self-adaptive Applications.Evers, C.; Kniewel, R.; Geihs, K.; Schmidt, L. In Future Generation Computer System, 34(5), pp. 110–123. 2014.
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Future computing systems must adjust to the user’s situations, habits, and intentions. Self-adaptive applications autonomously adapt to changing contexts without asking the user. However, the self-adaptive behaviour lacks of success if it does not correspond to the user’s personal interaction habits and intentions, particularly for complex scenarios with a high degree of user interaction. Concerning the interaction design, such adaptations can be irritating and distracting for the user if they do not match the current situation. In this article we provide a solution how to integrate the user in the self-adaptation feedback loop. The user will be able to influence the adaptation behaviour at run-time and in the long term by setting individual preferences. Consequently, we achieve a harmonisation between full application autonomy and user control. We implemented our generic concepts by extending an existing self-adaptation middleware with capabilities to respect the user’s application focus and interaction behaviour. A notification-based solution for user participation has been evaluated in a substantial user study with 62 participants. Although participants perceived much better control with our solution, the study made clear that notification design is specific for each adaptation type.
Evolution and Dynamics of Student Interaction on Networks of Face-to-Face Proximity.Atzmueller, Martin; Thiele, Lisa; Stumme, Gerd; Kauffeld, Simone. In Proceedings of the 2014 International Smart University Workshop (SmartU 2014), London, UK. London, UK, 2014.
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Towards Context Detection in the Ambient Classroom using Wearable Sensors.Atzmueller, Martin; Bobek, Szymon; Kibanov, Mark; Nalepa, Grzegorz J. In Proceedings of the 2014 International Smart University Workshop (SmartU 2014), London, UK. London, UK, 2014.
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System Evaluation.Behrenbruch, K.; Kieselmann, O.; Schuldt, M.; Söllner, M.; Schmidt, L. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 297–319. Springer, Cham, 2014.
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Ubiquitous applications are complex systems, and need to be evaluated with respect to their social compatibility in an encompassing and interdisciplinary approach. Interdisciplinary work bears the challenge of maintaining the strengths and specialities of each discipline while yielding consistent results at the same time. Also, the evaluation should be well-matched with other activities in the process of development. The presented system evaluation is designed to fulfill these goals as part of the VENUS Development Method . The system evaluation brings a development circle to a conclusion, and generates consistent results that facilitate decisions for next steps. The evaluation also yields suggestions for possible, further improvements. System evaluation unites four disciplines: usability engineering , trust engineering , legal compatible technology design , and security analysis . This chapter describes the starting points of each discipline, and derives an interdisciplinary approach which encompasses a concerted operating plan as well as contentual interdisciplinary cooperation. The system evaluation provides joint solutions for empirical work, but also leaves room for disciplinary analyses.
Rechtsverträglicher Einsatz von Sicherheitsmaßnahmen im öffentlichen Verkehr. Geminn, Christian L. In of DuD-Fachbeiträge, A. Roßnagel (ed.). Springer Vieweg, 2014.
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Socio-technical Design of Ubiquitous Computing Systems.Atzmueller, Martin; Behrenbruch, Kay; Hoffmann, Axel; Kibanov, Mark; Macek, Bjoern-Elmar; Scholz, Christoph; Skistims, Hendrik; Söllner, Matthias; Stumme, Gerd. K. David, K. Geihs, J.-M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.). Springer Verlag, Heidelberg, Germany, 2014.
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Collaborative Business Modeling: Design of an IT-Environment that enables the co-creation of a company’s business model.Ebel, Philipp. In G-Forum. Oldenburg, 2014.
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Evaluating Assumptions about Social Tagging - A Study of User Behavior in BibSonomy.Doerfel, Stephan; Zoller, Daniel; Singer, Philipp; Niebler, Thomas; Hotho, Andreas; Strohmaier, Markus. In Proceedings of the 16th LWA Workshops: KDML, IR and FGWM, Aachen, Germany, September 8-10, 2014., T. Seidl, M. Hassani, C. Beecks (eds.), pp. 18–19. CEUR-WS.org, 2014.
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Social tagging systems have established themselves as an important part in today’s web and have attracted the interest of our research community in a variety of investigations. Henceforth, several assumptions about social tagging systems have emerged on which our community also builds their work. Yet, testing such assumptions has been difficult due to the absence of suitable usage data in the past. In this work, we investigate and evaluate four assumptions about tagging systems by examining live server log data gathered from the public social tagging system BibSonomy. Our empirical results indicate that while some of these assumptions hold to a certain extent, other assumptions need to be reflected in a very critical light.
Pyramiding 2.0: Exaptation of the Pyramiding Approach to Recruit New Idea Contributors for a Virtual Ideas Competition.Ebel, P.; Bretschneider, U.; Leimeister, J. M. In International Conference on Information Systems (ICIS). Auckland, New Zealand, 2014.
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Incorporating Behavioral Trust Theory Into System Development for Ubiquitous Applications.Hoffmann, H.; Söllner, M. In Personal and Ubiquitous Computing, 18(1), pp. 117–128. 2014.
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Proceedings of the 2014 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2014). Atzmueller, Martin; Scholz, Christoph. ECML/PKDD 2014, Nancy, France, 2014.
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TeleMediaR - Telekommunikations- und Multimediarecht, dtv-Textsammlung mit einer Einführung. Geppert, M.; Roßnagel, A. 10th ed. beck-text im dtv, München, 2014.
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Successfully funded! - Welche Geschäftsmodelle machen crowdfinanzierte Cloud-Startups erfolgreich?Gierczak, M.; Söllner, M.; Leimeister, J. M. In Mulitkonferenz Wirtschaftsinformatik (MKWI). Paderborn, Germany, 2014.
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In den vergangenen Jahren haben Cloud-Anbieter verschiedene Ansätze verfolgt, um die wahrgenommenen Unsicherheiten von Kunden gegenüber Cloud-Lösungen zu verringern und die Akzeptanz dieser zu fördern. Dennoch bestehen weiterhin Unsicherheiten, die durch negative Ereignisse, wie die aktuelle Datenspäh-Affäre, zu sinkendem Vertrauen in Cloud-Lösungen und einer geringeren Adaption dieser führen. In dieser Forschungsarbeit sollen anhand der Geschäftsmodell-Logik CloudLösungen von crowdfinanzierten Startups untersucht werden, um Ähnlichkeiten und Unterschiede zwischen erfolgreichen und erfolglosen Projekten identifizieren zu können. Erste Erkenntnisse erfolgreicher Projekte zeigen, dass die Bündelung von Hard-, Software und Service ein geeigneter erster Schritt zur Steigerung der Akzeptanz von Cloud-Lösungen sein kann. Ergebnisse dieser Untersuchung sollen dabei helfen zu verstehen, wie die Adaption von Cloud-Lösungen gefördert werden kann.
Is all that Glitters Gold? Exploring The Effects of Perceived Risk on Backing Behavior in Reward-based Crowdfunding.Gierczak, M. M.; Bretschneider, U.; Leimeister, J. M. In International Conference on Information Systems (ICIS). Auckland, New Zealand, 2014.
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User Model.Behrenbruch, K.; Söllner, M.; Schuldt, M.; Schmidt, L. In Socio-technical Design of Ubiquitous Computing Systems, K. David, K. Geihs, J. M. Leimeister, A. Roßnagel, L. Schmidt, G. Stumme, A. Wacker (eds.), pp. 59–70. Springer, Cham, 2014.
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The acceptance of ubiquitous systems differs between individuals. This chapter presents research results on this topic in the form of a user model that systematically describes the influence of personality factors on the acceptance of Ubiquitous Computing (UC). In addition to the traditional factors of acceptance, trust and the perceived legal certainty are considered in the model. The result connects user characteristics with the determinants of the acceptance for UC. The findings are based on surveys conducted with the application Meet-U . Potentialities for using the results to design acceptable applications are derived.
Framework for the Productivity-oriented Conceptualisation of Blended Learning Services.Bitzer, Philipp. In Working Paper Series, Nr. 7. Kassel, Germany, 2014.
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Does culture matter? A qualitative and comparative study on eLearning in Germany and China.Hammer, Nadine; Janson, Andreas; Leimeister, Jan Marco. In 27th Bled eConference. Bled, Slovenia, 2014.
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Subjective vs. Objective Data: Bridging the Gap.Becker, Martin; Hotho, Andreas; Mueller, Juergen; Kibanov, Mark; Atzmueller, Martin; Stumme, Gerd. 2014.
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Sensor data is objective. But when measuring our environment, measured values are contrasted with our perception, which is always subjective. This makes interpreting sensor measurements difficult for a single person in her personal environment. In this context, the EveryAware projects directly connects the concepts of objective sensor data with subjective impressions and perceptions by providing a collective sensing platform with several client applications allowing to explicitly associate those two data types. The goal is to provide the user with personalized feedback, a characterization of the global as well as her personal environment, and enable her to position her perceptions in this global context. In this poster we summarize the collected data of two EveryAware applications, namely WideNoise for noise measurements and AirProbe for participatory air quality sensing. Basic insights are presented including user activity, learning processes and sensor data to perception correlations. These results provide an outlook on how this data can further be used to understand the connection between sensor data and perceptions.
IT-basierte, gemeinschaftsgestützte Innovationsentwicklung für Softwareunternehmen.Blohm, I.; Leimeister, J. M.; Krcmar, H. In Sozialen Wandel gestalten: Dortmunder Beiträge zur Sozialforschung, M. Jostmeier, A. Georg, H. Jacobsen (eds.), pp. 237–249. Springer VS, Wiesbaden, Germany, 2014.
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Mensch-Roboter-Interaktion in einem Boden-Luft-Servicerobotiksystem für die Inspektion industrieller Druckluftversorgung und Verbesserung von Arbeitsumgebungsfaktoren.Herrmann, R.; Hegenberg, J.; Ziegner, D.; Schmidt, L. Gelsenkirchen, 2014.
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Der Beitrag beschreibt das Forschungsprojekt Robotair, dessen Ziel die Entwicklung und Evaluation eines prototypischen, kostengünstigen Boden-Luft-Servicerobotersystems ist. Das System wird für die Detektion und Ortung von Druckluftleckagen zwecks nachhaltiger Ressourcen- und Energienutzung sowie für die Erfassung von Arbeitsumgebungsfaktoren zur Sicherstellung gesunder Arbeitsbedingungen verwendet. Es besteht aus einem teleoperiert fliegenden und einem teilautonom fahrenden Roboter, die beide mit sensorischer Nutzlast ausgestattet sind, sowie einem mobilen Leitstand. Dort wird aus den Sensorsignalen ein aussagekräftiges Lagebild erstellt und dem Nutzer visualisiert. Insbesondere wird die Mensch-Roboter-Interaktion zur Planung, Überwachung und Dokumentation der Inspektionsaufgaben sowie die Teleoperation des Flugroboters durch einen menschlichen Operator vorgestellt. Die Teleoperation soll menschliche Fähigkeiten synergetisch in das System integrieren und wird eingesetzt, falls der Mensch in der Lage ist, bei der Bearbeitung einer Aufgabe bessere Ergebnisse zu erzielen. Zur Unterstützung der Teleoperation wird u. a. eine Datenbrille eingesetzt, die relevante Daten in einer Augmented-Reality-Umgebung visualisiert
Crowdsourcing und Crowd Work - ein Zukunftsmodell der IT-gestützten Arbeitsorganisation?Blohm, Ivo; Leimeister, Jan Marco; Zogaj, Shkodran. In Wirtschaftsinformatik in Wissenschaft und Praxis, Vol. Business Engineering, W. Brenner, T. Hess (eds.), pp. 51–64. Springer-Verlag, Berlin Heidelberg, 2014.
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Service Systems Engineering - A Field for Future Information Systems Research.Böhmann Tilo; Leimeister, Jan Marco; Möslein Kathrin. In Business & Information Systems Engineering (BISE) (DOI: 10.1007/s12599-014-0314-8). 2014.
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Service-Systems-Engineering - Ein zukünftiges Forschungsgebiet der Wirtschaftsinformatik.Böhmann Tilo; Leimeister, Jan Marco; Möslein Kathrin. In WIRTSCHAFTSINFORMATIK (DOI 10.1007/s11576-014-0406-6). 2014.
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Analyzing and Grounding Social Interaction in Online and Offline Networks.Atzmueller, Martin. In Proc. ECML/PKDD 2014: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, Vol. 8726 of LNCS, pp. 485–488. Springer Verlag, Heidelberg, Germany, 2014.
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Rechtliche und technische Nutzerunterstützung bei der Button-Lösung, Ein Lösungsvorschlag zur Erkennbarkeit von Kostenfallen als dem immer noch ungelösten Kernproblem.Boos, Carina; Bartsch, Steffen; Volkamer, Melanie. In Computer und Recht (CR), 2, pp. 119–127. 2014.
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Nutzerunterstützung durch automatisierte Auswertung einzelner standardisierter Vertragsbedingungen, AGB: Was habe ich verpasst?Boos, Carina. In Verbraucher und Recht (VuR), 2(47-52). 2014.
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AAL-Weiterbildung für Pflege und Handwerk: Ergebnisse der ersten Testphase.Heußner, M.; Ackermann, L.; Schmidt, L. In Wohnen - Pflege - Teilhabe: Besser leben durch Technik : 7. Deutscher AAL-Kongress (Berlin 2014), Verband der Elektrotechnik Elektronik Informationstechnik e. V. (ed.), pp. 1–6 (a40). VDE-Verlag, Berlin, 2014.
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Das Ziel des Projektes "TAAndem - AAL-Weiterbildung im Tandem" ist die Entwicklung einer gemeinsamen Weiterbildungsmaßnahme im Themenfeld AAL. Diese richtet sich im ersten Schritt an Pflegekräfte und Handwerker. Bei der Wissensvermittlung wird das didaktische Konzept des Tandemlernens aufgegriffen. Im Rahmen eines "AALSchnuppertages" wurden einzelne Teilaspekte für die anstehende Pilotphase mit potenziellen Teilnehmern getestet.
Elektronische Wahlen durch Stimmzettelbelege? Untersuchung möglicher Umsetzungen des Öffentlichkeitsgrundsatzes.Henning, M.; Budurushi, J.; Volkamer, M. In MMR 2014, pp. 154–158. 2014.
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E2V.Braun, R.; Strenge, B.; Schmidt, L. Fachgebiet Mensch-Maschine-Systemtechnik der Universität Kassel, 2014.
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Für viele abgeschlossene Gebiete wie z. B. urbane Kerne, verkehrsfreie Wohnviertel, Park- und Kulturlandschaften verbietet sich aufgrund der räumlichen Gegebenheiten, von Umweltaspekten, Tourismus oder anderen Gründen die Verwendung von regulären Straßenfahrzeugen. Andererseits besteht die Notwendigkeit, ohne Veränderung der Infrastruktur gerade für ältere oder behinderte Menschen diese Gebiete zu erschließen und dabei Informationen zum Umfeld sowie Fahrerassistenz bereit zu stellen. Im E2V-Projekt wurde daher das Gesamtziel verfolgt, ein kompaktes, wendiges, leichtes und teilautonomes elektrisches Fahrzeug mit interaktiver, kontextorientierter Mensch-Maschine-Schnittstelle und entsprechendem Nutzerkonzept für einen derartigen Anwendungskontext zu entwickeln. Ziel des Teilvorhabens Mensch-Maschine-Interaktion war es, die Schnittstellen zwischen den betroffenen Menschen und dem Fahrzeug zu behandeln, einschließlich der Gestaltung des Innenraums, der Bedienelemente für die Fahrzeugsteuerung sowie der Administration und Darstellung der Inhalte der Informations- und Navigationssysteme, um die Gebrauchstauglichkeit und Akzeptanz des Systems sicherzustellen. Zu diesem Zweck konnte auf ein umfangreiches Repertoire bestehender Erkenntnisse, Methoden und Werkzeuge zur benutzerorientierten Gestaltung zurückgegriffen werden, die den Projektcharakteristiken entsprechend ausgewählt und eingesetzt wurden. Dazu gehörte eine Anforderungsdefinition auf Basis von Analysen des Nutzungskontexts (Nutzer, Aufgaben und Umgebung), softwaregestützten anthropometrischen Analysen (Reichweiten, Platzbedarf, Blickwinkel etc.) und systematischer Recherchen existierender Konzepte. Unter Berücksichtigung der besonderen Eigenschaften und Bedürfnisse der Zielgruppe älterer und körperlich eingeschränkter Menschen, die darüber hinaus nicht über eine Fahrerlaubnis verfügen müssen, wurde entschieden, dass für die Fahrzeugsteuerung ein Side Stick und für die Ein- und Ausgabe des Informationssystems ein Touchscreen sowie Lautsprecher zur Audioausgabe einzusetzen sind. Anhand dieser Erkenntnisse wurden geeignete Komponenten zur Fahrzeugsteuerung identifiziert und prototypische Entwürfe der Benutzungsschnittstellen der Informations- und Navigationssysteme entwickelt. Letztere wurden zunächst mittels auf den Anwendungskontext angepasster, leichtgewichtiger Evaluationsmethoden iterativ optimiert und anschließend durch einen Unterauftragnehmer prototypisch implementiert. Abschließend wurde eine Evaluation der Informations- und Navigationssysteme im Rahmen von Nutzertests mit einem speziell zu diesem Zweck aufgebauten Fahrsimulator durchgeführt, der wie das eigentliche E2V mit einem einhändig bedienbaren Side Stick gesteuert werden konnte. Die Evaluationsergebnisse spiegelten einige sehr spezielle Bedürfnisse und Anforderungen der primären Zielgruppe wider, zumal bestimmte Benutzungsprobleme exklusiv bei den ältesten Testteilnehmern aufgetreten sind. Als Gründe hierfür sind u. a. fehlende Erfahrung bei der Computernutzung sowie verringerte Sinneswahrnehmung anzunehmen. Bei einer ergänzenden Untersuchung unterschiedlicher Steuerungskonzepte für den aktiven Side Stick wurde eine tendenzielle subjektive Präferenz der Testteilnehmer für eine auf der Längsachse isometrische und auf der Querachse vergleichsweise schwergängige Konfiguration ermittelt. Darüber hinaus gab es objektive Hinweise darauf, dass dieses Steuerungskonzept vergleichsweise gut mit einem für das E2V vorgesehenen Assistenzsystem harmoniert, das den Fahrer beim Abkommen vom Weg durch Vibration des Side Sticks warnt. Das Assistenzsystem selbst wurde von den Testpersonen durchweg als hilfreich bewertet
User, Use & Utility Research: Die Gestaltungsperspektive der Wirtschaftsinformatik auf den digitalen Nutzer.Brenner, Walter; Karagiannis, Dimitris; Kolbe, Lutz; Krüger, Jens; Lamberti, Herman-Josef; Leifer, Larry; Leimeister, Jan Marco; Österle, Hubert; Petrie, Charles; Plattner, Hasso; Schwabe, Gerhard; Uebernickel, Falk; Winter, Robert; Zarnekow, Ruediger. In WIRTSCHAFTSINFORMATIK, (1), pp. 65–72. 2014.
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User, Use & Utility Research : The digital user as new design perspective in Business & Information Systems Engineering.Brenner, Walter; Karagiannis, Dimitris; Kolbe, Lutz; Krüger, Jens; Lamberti, Herman-Josef; Leifer, Larry; Leimeister, Jan Marco; Österle, Hubert; Petrie, Charles; Plattner, Hasso; Schwabe, Gerhard; Uebernickel, Falk; Winter, Robert; Zarnekow, Ruediger. In Business & Information Systems Engineering (BISE), (1), pp. 55–61. 2014.
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Creating Awareness and Reflection in a Large-Scale IS Lecture – The Application of a Peer Assessment in a Flipped Classroom Scenario.Janson, Andreas; Ernst, Sissy-Josefina; Lehmann, Katja; Leimeister, Jan Marco. In 4th Workshop on Awareness and Reflection in Technology-Enhanced Learning (ARTEL 2014) to be held in the context of EC-TEL 2014. Graz, Austria, 2014.
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Proceedings MSM 2014: Workshop on Modeling Social Media - Mining Big Data in Social Media and the Web. Atzmueller, Martin; Chin, Alvin; Trattner, Christoph. ACM Press, New York, NY, USA, 2014.
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On the Evolution of Social Groups During Coffee Breaks.Atzmueller, Martin; Ernst, Andreas; Krebs, Friedrich; Scholz, Christoph; Stumme, Gerd. In 5th International Workshop on Modeling Social Media: Mining Big Data in Social Media at the 23rd International World Wide Web Conference, WWW 2014, [accepted/to appear] (ed.). Seoul, South Korea, 2014.
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Not Only for Ideation, But Also for Signaling: Incorporating User-Profile-Webpages into Virtual Ideas Communities.Bretschneider, Ulrich; Ebel, Philipp; Zogaj, Shkodran; Leimeister, Jan Marco. In Proceedings of The 10th International Symposium on Open Collaboration (OpenSym ’14). Berlin, Germany, 2014.
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Communities für Innovationen – Modulare Erweiterung einer Patientencommunity zur Ideenschmiede.Hartmann, M.; Prinz, A.; Leimeister, J. M. In Personenbezogene Dienstleistungen im Kontext komplexer Wertschöpfungssysteme – Anwendungsfeld „seltene Krankheiten“, M. Geiger, D. Bieber (eds.). Gabler Verlag, Wiesbaden, Germany, 2014.
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Vertrauen in Cloud Computing schaffen - aber wie?Buch, Meike Stefanie; Gebauer, Lysann; Holger, Hoffmann. In Wirtschaftsinformatik & Management, (3), pp. 67–77. 2014.
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Examining the effect of different measurements of learning success in technology-mediated learning research research-in-progress.Janson, Andreas; Söllner, Matthias; Bitzer, Philipp; Leimeister, Jan Marco. 2014.
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This research-in-progress paper examines the effects of different measurement methods for learning success with respect to the empirical evaluation of technology-mediated learning (TML). We argue that the use of self-reported data for the major dependent variable of TML, learning success, is insufficient and a major validity threat of past research results; thus, we examine the effect of employed measurement methods in TML against the background of common method variance. We are currently conducting a study on the antecedents of learning success measured by three different approaches that include self-reported learning and objective learning success. By analyzing the data, we are able to investigate how different measurement approaches to learning success impact research findings. Our contribution to theory and practice is an assessment of the validity of self-reported learning success measures and the impact of different measurement approaches for the relationships in a TML model.
Lean on Diffusion Theory to Make Ideas-Communities Fly - The Case of DATEV.Hartmann, Marco. In European Conference on Information Systems (ECIS). Tel Aviv, Israel, 2014.
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Motivations for Crowdfunding: What Drives the Crowd to Invest in Start-ups?Bretschneider, Ulrich; Knaub, Katharina; Wieck, Enrico. In European Conference on Information Systems (ECIS). Tel Aviv, Israel, 2014.
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Towards a Holistic Understanding of Technology-Mediated Learning Services - A State-of-the-Art Analysis.Bitzer, Philipp; Janson, Andreas. In European Conference on Information Systems (ECIS). Tel Aviv, Israel, 2014.
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Der Weg zur effizienten Bereitstellung kultursensitiver Dienstleistungen - erste Schritte mittels systematischer Modularisierung.Janson, Andreas; Peters, Christoph; Leimeister, Jan Marco. In Dienstleistungsmodellierung 2014. Wien, 2014.
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SINIT@VW - Ein Ansatz zur systematischen Identifikation des Nutzens von IT-Anwendungen.Bitzer, Philipp; Leimeister, Jan Marco; Heidecke, Hans-Christian. In Betriebliche Informationssysteme in der Automobilproduktion, B. Rudow, H.-C. Heidecke (eds.), pp. 261–286. De Gruyter, Oldenburg (978-3486800159), 2014.
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Examining the Effect of Common Method Variance in Technology-mediated Learning Research.Janson, Andreas; Söllner, Matthias; Bitzer, Philipp; Leimeister, Jan Marco. In First AIS-Journals Joint Author Workshop (Pre-ECIS 14 Workshop). Tel Aviv, Israel, 2014.
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2013[ to top ]

Multidimensionale Vorteilhaftigkeitsbetrachtung von Dienstleistungen am Beispiel Telemedizin.Georgi, Christian; Peters, Christoph. In CONTROLLING – Zeitschrift für erfolgsorientierte Unternehmenssteuerung, 25(10), pp. 528–535. 2013.
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AAL-Weiterbildung für Pflege und Handwerk: erste Ergebnisse einer Anforderungsanalyse.Heußner, M.; Ackermann, L.; Widy, O.; Schmidt, L.; Pippert, M.; Bienhaus, D.; Durward, D.; Prinz, A.; Wegener, R.; Leimeister, J. M. In 6. Deutscher AAL-Kongress 2013 - Themenschwerpunkt: AAL in der gesundheitlichen Versorgungskette: Zuhause – Unterwegs – im Krankenhaus – in der Reha – in der Pflege – im Hospiz. Berlin, Germany, 2013.
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Towards Understanding the Formation of Continuous IT Use.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Milano, Italy, 2013.
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A Comparative Study of Governmental One-Stop Portals for Public Service Delivery.Kohlborn, Thomas; Korthaus, Axel; Peters, Christoph; Fielt, Erwin. In International Journal of Intelligent Information Technologies (IJIIT), 9(3), pp. 1–19. 2013.
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Pico-Jobs as an Open Innovation Tool for Utilising Crowdsourcing.Fähling, Jens; Blohm, Ivo; Leimeister, Jan Marco; Krcmar, Helmut; Fischer, Jan. In Managing Open Innovation Technologies, J. S. Z. Eriksson Lundström, M. Wiberg, S. Hrastinski, M. Edenius, P. J. Ågerfalk (eds.), pp. 199–214. Springer, Berlin, Heidelberg (ISBN: 978-3-642-31649-4), 2013.
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Proceedings of the 2013 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2013). Atzmueller, Martin; Scholz, Christoph. ECML/PKDD 2013, Prague, Czech Republic, 2013.
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Patients as innovators - The development of innovative ideas with the Ideenschmiede.Hartmann, M.; Bretschneider, U.; Leimeister, J. M. In Wirtschaftsinformatik Konferenz (WI). Leipzig, Germany, 2013.
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Applying an Open Innovation Method for identifying Challenges in the Cloud Business Environment.Gierczak, Michael; Gebauer, Lysann; Ebel, Philipp Alexander; Leimeister, Jan Marco. In ConLife Academics 2013 - Conference for Connected Life (ConLife 2013). Berlin, Germany, 2013.
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Assistenzsystem für den Computerarbeitsplatz zur Vermeidung von Überbeanspruchung.Kniewel, R.; Gerhold, M.; Parusel, M.; Ackermann, L.; Schmidt, L. In Lebensqualität im Wandel von Demografie und Technik: 6. Deutscher AAL-Kongress (Berlin 2013), Verband der Elektrotechnik Elektronik Informationstechnik e. V. (ed.), pp. 438–442. VDE-Verlag, Berlin, 2013.
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Ein technisches Assistenzsystem für den Computerarbeitsplatz könnte dabei unterstützen, physische und psychische Beanspruchungen zu mindern, indem es sensorbasiert erfasst, wenn eine übermäßige Beanspruchung vorliegt und Gegenmaßnahmen in einer adäquaten Weise vorschlägt. Auch könnte es möglichen Beanspruchungen vorbeugen. Im Projekt "Smart Seating" wurden verschiedene Bestandteile des beschriebenen Assistenzsystems im Rahmen des benutzerzentrierten Gestaltungsansatzes unter Einbezug der potentiellen Nutzer konzipiert oder prototypisch entwickelt. Dieser Beitrag stellt die Einzelarbeiten und die jeweiligen Erkenntnisse für die Entwicklung des Assistenzsystems vor.
Entwicklung eines Vorgehensmodells zum Erreichen einer kritischen Nutzermasse in Ideen-Communities.Hartmann, M. In Wirtschaftsinformatik Konferenz Doctoral Consortium (WI DC). Leipzig, Germany, 2013.
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Towards Capturing Social Interactions with SDCF: An Extensible Framework for Mobile Sensing and Ubiquitous Data Collection.Atzmueller, Martin; Hilgenberg, Katy. In Proc. 4th International Workshop on Modeling Social Media (MSM 2013), Hypertext 2013. ACM Press, New York, NY, USA, 2013.
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Challenging the Need for Transparency, Controllability, and Consistency in Usable Adaptation Design.Kniewel, R.; Evers, C.; Schmidt, L.; Geihs, K. In Electronic Communications of the EASST : Proceedings of the Combined Workshop on Self-organizing, Adaptive, and Context- Sensitive Distributed Systems and Self-organized Communication in Disaster Scenarios (Stuttgart 2013), 56, pp. 2–13. 2013.
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Adaptive applications constitute the basis for many ubiquitous computing scenarios as they can dynamically adapt to changing contexts. The usability design principles transparency, controllability, and consistency have been recommended for the design of adaptive interfaces. However, designing self-adaptive applications that may act completely autonomous is still a challenging task because there is no set of usability design guidelines. Applying the three principles in the design of the five different adaptations of the mobile adaptive application Meet-U revealed as difficult. Based on an analysis of the design problem space, we elaborate an approach for the design of usable adaptations. Our approach is based on a notification design concept which calculates the attention costs and utility benefits of notified adaptations by varying the design aspects transparency and controllability. We present several designs for the adaptations of Meet\hbox{-}}U. The results of a user study shows that the notification design approach is beneficial for the design of adaptations. Varying transparency and controllability is necessary to adjust an adaptation’s design to the particular context of use. This leads to a partially inconsistent design for adaptations within an application.
User-Relatedness and Community Structure in Social Interaction Networks.Mitzlaff, Folke; Atzmueller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In CoRR/abs, 1309.3888. 2013.
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A Concept for Securing Cyber-Physical Systems with Organic Computing Techniques.Hähner, J.; Rudolph, S.; Tomforde, S.; Fisch, D.; Sick, B.; Kopal, N; Wacker, A. In 1st International Workshop on „Self-optimisation in organic and autonomic computing systems“ (SAOS13), held in conjunction with 26th International Conference on Architecture of Computing Systems (ARCS 2013). Prague, Czech Republic, 2013.
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SDCF - A Sensor Data Collection Framework for Social and Ubiquitous Environments: Challenges and First Experiences in Sensor-based Social Networks (Abstract).Atzmueller, Martin; Hilgenberg, Katy. In Proc. Sunbelt XXXIII: Annual Meeting of the International Network for Social Network Analysis. INSNA, Hamburg, Germany, 2013.
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Teleoperationsunterstützung durch körpergekoppelte Steuerung und wahrnehmungsgerechtes visuelles Feedback.Hegenberg, J.; Cramar, L.; Schmidt, L. Boppard, 2013.
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Dieser Vortrag stellt verschiedene Ansätze zur Unterstützung eines menschlichen Operators bei der Teleoperation mobiler Roboter vor. Im Mittelpunkt steht dabei die Gestaltung der Schnittstelle zwischen Mensch und Roboter sowie insbesondere ihre Erweiterung durch geeignete Assistenzfunktionen. Durch Applikation eines benutzerzentrierten Gestaltungsansatzes nach ISO 9241-210 [1, 2, 3] und dabei insbesondere durch Evaluationen mit potentiellen Nutzern wird außerdem die Gebrauchstauglichkeit und Akzeptanz prototypisch realisierter Interaktionskonzepte sichergestellt. Dazu werden ausgewählte Evaluationsergebnisse vorgestellt. Unterstützungsbedarf hinsichtlich der Teleoperation besteht sowohl im Bezug auf die Wahrnehmung der entfernten Einsatzumgebung durch den Operator als auch im Bezug auf die Steuerung einer potentiell großen Anzahl an Freiheitsgraden des mobilen Robotersystems. Beide Aspekte führen zu hohen Anforderungen an die kognitiven und motorischen Fähigkeiten des Operators, denen es durch geeignete technische Lösungen zu begegnen gilt. Zur Evaluation verschiedener Assistenzsysteme zur Teleoperationsunterstützung wurde eine mobile Roboterplattform aufgebaut, die mit Hilfe eines Roboterarms und eines Drei-Finger-Greifers manipulativ auf ihre Einsatzumgebung einwirken kann. Da der Roboter außerdem in der Lage ist, autonom zu navigieren, lassen sich über reine Teleoperation hinausgehende Interaktionskonzepte wie bspw. die leitende Kontrolle [4] eines Mensch-Roboter-Systems untersuchen. Zur Unterstützung der Wahrnehmung der entfernten Umgebung wurde der Roboter mit einem Stereokamerasystem ausgestattet, dessen technische Auslegung sich an den Eigenschaften des visuellen Systems des Menschen orientiert [5] und somit eine möglichst natürliche Wahrnehmung bietet. Ähnliche Arbeiten fokussieren oft auf die technische Realisierung oder auf maschinelles Sehen. Stereoskopie ermöglicht dem Operator eine Tiefenwahrnehmung, die zur Durchführung von Telemanipulationsaufgaben notwendig ist. Das Kamerasystem ist schwenk- und neigbar, ermöglicht eine servobasierte Nachführung der Augenvergenz und lässt sich bspw. durch Einstellung des Pupillenabstandes an verschiedene Nutzer anpassen. Zur Visualisierung der Videobilder werden stereoskopische Bildschirme und ein Head-Mounted Display eingesetzt. Aktuelle Arbeiten bzgl. der Visualisierung beschäftigen sich mit 3D-Laser-basierten Umgebungsmodellen als Ersatz für Videobilder und Augmented Reality. Um den Operator bei der Steuerung der verschiedenen Freiheitsgrade des Systems zu unterstützen, wurden Ansätze erprobt, die Freiheitsgrade an die Bewegung des Operators zu koppeln. Ein Beispiel dafür ist die Steuerung der Ausrichtung des Kamerasystems entsprechend der Kopfbewegung des Operators [6, 7]. Dies wurde hier für visuelle Suchaufgaben eingesetzt, die gegenüber anderen Anwendungen größere und häufigere Kopfbewegungen erfordern. Außerdem wurden verschiedene publizierte Realisierungsansätze bzgl. ihrer Auswirkungen auf den Menschen vergleichend untersucht. Ein weiteres Beispiel ist die Verfolgung der Handbewegung des Operators. Diese wird häufig zum Teachin automatischer Bewegungsabläufe eingesetzt, selten zur Teleoperation. Teilkomponenten haben in ersten Evaluationen ihre Überlegenheit gegenüber herkömmlichen Ansätzen unter Beweis gestellt [8]. Aktuelle Arbeiten in diesem Bereich beschäftigen sich mit symbolischen Ansätzen zur Gestensteuerung des Robotersystems. [1] DIN EN ISO 9241-210: Ergonomie der Mensch-System-Interaktion - Teil 210: Prozess zur Gestaltung gebrauchstauglicher interaktiver Systeme. Januar 2011 [2] Hegenberg, J.; Cramar, L. & Schmidt, L.: Task- and user-centered design of a human-robot system for gas leak detection: From requirements analysis to prototypical realization. In: Petrovic, I. & Korondi, P. (Hrsg.): 10th International IFAC Symposium on Robot Control (Dubrovnik, Kroatien 2012). Dubrovnik: International Federation of Automatic Control (IFAC), 2012, S. 793-798 [3] Schmidt, L.; Hegenberg, J. & Cramar, L.: Mensch-Roboter-System zur Gaslecksuche. In: atp edition - Automatisierungstechnische Praxis 53 (2011), Nr. 12, S. 56-65 [4] Sheridan, T. B.: Humans and Automation : System Design and Research Issues. New York: Wiley, 2002 [5] Hegenberg, J.; Cramar, L. & Schmidt, L.: Teleoperationsunterstützung über ein HMD und ein kopfbewegungsgesteuertes Stereokamerasystem auf einem entfernten mobilen Roboter. In: Bundesanstalt für Arbeitsschutz und Arbeitsmedizin (Hrsg.): Datenbrillen - Aktueller Stand von Forschung und Umsetzung sowie zukünftiger Entwicklungsrichtungen (Dortmund 2011). Dortmund: BAuA, 2012, S. 29-38 [6] Heuring, J. J. & Murray, D. W.: Visual head tracking and slaving for visual telepresence. In: Proceedings of the IEEE International Conference on Robotics and Automation (Minneapolis, USA 1996). Minneapolis: IEEE, 1996, S. 2908-2914 [7] Reilink, R., de Bruin, G., Franken, M., Mariani, M., Misra, S. & Stramigioli, S.: Endoscopic camera control by head movements for thoracic surgery. In: Proceedings of the 3rd IEEE, RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics (Tokyo, Japan 2010). Tokyo: IEEE, 2010, S. 510–515 [8] Hegenberg, J.; Röllke, A.; Cramar, L. & Schmidt, L.: Ergonomische Gestaltung einer kopfbewegungsbasierten Steuerung eines Stereokamerasystems auf einem mobilen Roboter. In: Gesellschaft für Arbeitswissenschaft e. V. (Hrsg.): Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit : 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012). Dortmund: GfA-Press, 2012, S. 249-25
Wählen in beliebigen Wahlbezirken: Ein neuer Wahlkanal.Henning, M.; Budurushi, J.; Volkamer, M. In Abstraktion und Applikation, Tagungsband des 16. Internationalen Rechtsinformatik Symposiums (IRIS), 16, Ö. C. Gesellschaft (ed.), pp. 249–256. 2013.
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Forschungsprojekt RoboGasInspector: Gaslecksuche mit autonomen mobilen Robotern.Habib, A.; Bonow, G.; Kroll, A.; Hegenberg, J.; Schmidt, L.; Barz, T.; Schulz, D. In Technische Sicherheit, 3(5), pp. 10–15. 2013.
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Im Rahmen des Förderprogramms AUTONOMIK des Bundesministeriums für Wirtschaft und Technologie wurde in einem Konsortium aus neun Projektpartnern der Prototyp eines autonomen mobilen Roboters zur Gaslecksuche in ausgedehnten Industrieanlagen entwickelt. Anhand verschiedenartiger Sensorik zur Selbstlokalisation und Navigation wurde die autonome Beweglichkeit des Systems für beliebige Anlagen realisiert, mit der Option anhand von Teleoperation manuell in den Prozess einzugreifen. Ausgestattet mit Video- und Gasfernmesstechnik ist der Roboter imstande, Inspektionsaufgaben in Industrieanlagen durchzuführen, ohne in mögliche Gefahrenbereiche direkt einfahren zu müssen und ohne, dass ein Mensch vor Ort anwesend ist. Der Roboter kann zur routinemäßigen Inspektion von Anlagen oder zur gezielten Untersuchung spezifischer Anlagenteile eingesetzt werden. Dank der verwendeten Fernmesstechnik können auch Anlagenteile inspiziert werden, die aufgrund ihrer beschränkten Zugänglichkeit mittels herkömmlicher Messtechnik nur schwer zu inspizieren sind.
Modeling the German Legal Latitude Principles.Henning, M.; Neumann, S.; Kahlert, A.; Richter, P.; Jonker, H.; Volkamer, M. In International Conference on Electronic Participation, 5, Springer (ed.), pp. 49–56. 2013.
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Vote Casting in Any Preferred Constituency - A New Voting Channel.Henning, M.; Budurushi, J.; Volkamer, M. In E-Voting and Identity (VoteID), Springer (ed.), pp. 61 – 75. 2013.
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Challenging the Need for Transparency, Controllability, and Consistency in Usable Adaptation.Kniewel, Romy; Evers, Christoph; Schmidt, Ludger; Geihs, Kurt. M. Zapf; F. Evers (eds.). Stuttgart, 2013.
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Prêt à Voter Providing Everlasting Privacy.Henning, M.; Demirel, D.; van de Graaf, J.; Ryan, P. Y. A.; Buchmann, J. In E-Voting and Identity (VoteID), Springer (ed.), pp. 156 – 175. 2013.
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Sicherstellung der Compliance von Sekundärsystemen bei digitaler Betriebsprüfung.Klotz, M.; Sulk, I.; Wieck, E. In HMD - Praxis der Wirtschaftsinformatik, (289), pp. 61–69. 2013.
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Conferator - a Social System for Conference and Contact Management.Atzmueller, Martin; Kibanov, Mark; Scholz, Christoph; Stumme, Gerd. INFORMATIK 2013, 2013.
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Exploratory Pattern Mining on Social Media using Geo-References and Social Tagging Information.Atzmueller, Martin; Lemmerich, Florian. In International Journal of Web Science (Special Issue on Social Web Search and Mining), 2(1/2). 2013.
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Subgroup Analytics and Interactive Assessment on Ubiquitous Data.Atzmueller, Martin; Mueller, Juergen. In Proceedings of the International Workshop on Mining Ubiquitous and Social Environments (MUSE2013). Prague, Czech Republic, 2013.
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Exploring Business Models for IT-enabled Product-Service-Systems.Gierczak, Michael; Söllner, Matthias; Leimeister, Jan Marco. In DIBME 2013 Pre-ECIS Workshop on the Digitization in Business Models and Entrepreneurship. Utrecht, The Netherlands, 2013.
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Offering customer-oriented bundles of products and services – product-service systems (PSS) – can create additional customer value in comparison to offering all components individually. PSS allow providers to create a long-term customer relationship, market success, and has the potential to support differentiation from competitors. Offering bundles solving customer problems will have several effects on internal and external activities, and thus the providers’ business model (BM). However, until now, theoretical and empirical insights regarding this impact are sparse. Therefore, we aim to explore the impact of the rise of PSS on the providers BMs, especially focusing on how value is created. This helps IT decision-makers to identify appropriate IT-enabled PSS their businesses could provide and subsequent changes that need to be made in their BM. Consequently, businesses are supported in the innovation process of their products. To achieve this goal, we plan to review at least 20 successful BMs of the most valuable enterprise tech companies in the world. We focus on IT-enabled PSS, since IT is a key driver of PSS, economic growth and profitability. In this researchin-progress paper, we present the theoretical foundations, develop a definition of BMs for ITenabled PSS, and provide details concerning the methodology of our planned review.
Informatische Modellierung der Prinzipien des gesetzlichen Gestaltungsspielraums im Hinblick auf Wahlsysteme.Henning, M.; Neumann, S.; Kahlert, A.; Jonker, A.; Volkamer, M. In Abstraktion und Applikation, Tagungsband des 16. Internationalen Rechtsinformatik Symposiums (IRIS), 16, Ö. C. Gesellschaft (ed.), pp. 277–284. 2013.
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Anforderungsmuster im Requirements Engineering.Janzen, A.; Hoffmann, A.; Hoffmann, H. In Working Paper Series, Nr. 2. Kassel, Germany, 2013.
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A Generic Platform for Ubiquitous and Subjective Data.Becker, Martin; Mueller, Juergen; Hotho, Andreas; Stumme, Gerd. In 1st International Workshop on Pervasive Urban Crowdsensing Architecture and Applications, PUCAA 2013, Zurich, Switzerland -- September 9, 2013. Proceedings, pp. 1175–1182. ACM, New York, NY, USA, 2013.
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An increasing number of platforms like Xively or ThingSpeak are available to manage ubiquitous sensor data enabling the Internet of Things. Strict data formats allow interoperability and informative visualizations, supporting the development of custom user applications. Yet, these strict data formats as well as the common feed-centric approach limit the flexibility of these platforms. We aim at providing a concept that supports data ranging from text-based formats like JSON to images and video footage. Furthermore, we introduce the concept of extensions, which allows to enrich existing data points with additional information, thus, taking a data point centric approach. This enables us to gain semantic and user specific context by attaching subjective data to objective values. This paper provides an overview of our architecture including concept, implementation details and present applications. We distinguish our approach from several other systems and describe two sensing applications namely AirProbe and WideNoise that were implemented for our platform.
Towards a Reference Model for a Productivity-optimized Delivery of Technology Mediated Learing Services.Bitzer, Philipp; Weiß, Frank; Leimeister, Jan Marco. In Eighth International Conference on Design Science Research in Information Systems and Technology (DESRIST). Helsinki, Finland, 2013.
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Engineering for Shared Understanding in Heterogeneous Work Groups - An Action Research study at a German Automotive Company.Bittner, Eva Alice Christiane; Hoffmann, Axel; Leimeister, Jan Marco. In Group Decision and Negotiation (GDN) 2013. Stockholm, Sweden, 2013.
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Deeper Into the Folksonomy Graph: FolkRank Adaptations and Extensions for Improved Tag Recommendations.Landia, Nikolas; Doerfel, Stephan; Jäschke, Robert; Anand, Sarabjot Singh; Hotho, Andreas; Griffiths, Nathan. In cs.IR, 1310.1498. 2013.
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The information contained in social tagging systems is often modelled as a graph of connections between users, items and tags. Recommendation algorithms such as FolkRank, have the potential to leverage complex relationships in the data, corresponding to multiple hops in the graph. We present an in-depth analysis and evaluation of graph models for social tagging data and propose novel adaptations and extensions of FolkRank to improve tag recommendations. We highlight implicit assumptions made by the widely used folksonomy model, and propose an alternative and more accurate graph-representation of the data. Our extensions of FolkRank address the new item problem by incorporating content data into the algorithm, and significantly improve prediction results on unpruned datasets. Our adaptations address issues in the iterative weight spreading calculation that potentially hinder FolkRank's ability to leverage the deep graph as an information source. Moreover, we evaluate the benefit of considering each deeper level of the graph, and present important insights regarding the characteristics of social tagging data in general. Our results suggest that the base assumption made by conventional weight propagation methods, that closeness in the graph always implies a positive relationship, does not hold for the social tagging domain.
Personal Information Dashboard: Putting the Individual Back in Control.Buchmann, J.; Nebel, M.; Roßnagel, A.; Shirazi, F.; Simo, H.; Waidner, M. In Digital Enlightenment Yearbook 2013, Hildebrandt; O’Hara; Waidner (eds.), pp. 139 – 164. 2013.
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Internet Privacy – Options for Adequate Realisation. Buchmann, J.; Capurro, R.; Löw, M.; Roßnagel, A.; et al. In of acatech study, J. Buchmann (ed.). aca, 2013.
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Internet Privacy – Options for adequate realisation. Buchmann, J.; Capurro, R.; Löw, M.; Müller, G.; Pretschner, A.; Roßnagel, A.; Waidner, M.; Eiermann, K.; Eldred, M.; Kelbert, F.; Nagel, D.; Ochs, C.; Peters, M.; Richter, P.; Shirazi, F.; Simo, H. J. Buchmann (ed.). Springer, 2013.
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Maßnahmenkatalog zur Vertrauenserhöhung im Cloud Computing.Buch, M.; Gebauer, L. In Working Paper Series, Nr. 4. Kassel, Germany, 2013.
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Success Factors for Technology Mediated Learning Services – First Results of a Delphi Study.Bitzer, Philipp; Menschner, Philipp; Leimeister, Jan Marco. In Die e-Learning Fachtagung Informatik (DeLFI). Braunschweig, Germany, 2013.
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Towards a Productivity Measurement Model for Technology Mediated Learning Services.Bitzer, Philipp; Söllner, Matthias. In European Conference on Information Systems (ECIS). Utrecht, The Netherlands, 2013.
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Evaluating the Quality of Technology-Mediated Learning Services.Bitzer, Philipp; Söllner, Matthias; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Milano, Italy, 2013.
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Benutzerorientierte Entwicklung eines für spezifische Nutzergruppen adaptierbaren, einachsigen, teilautonomen Elektrofahrzeugs.Braun, R.; Schmidt, L. In Lebensqualität im Wandel von Demografie und Technik: 6. Deutscher AAL-Kongress (Berlin 2013), Verband der Elektrotechnik Elektronik Informationstechnik e. V. (ed.), pp. 321–325. VDE-Verlag, Berlin, 2013.
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Im Sinne einer barrierefreien Umwelt besteht die Notwendigkeit, jegliche öffentlichen Räume auch abseits infrastrukturell gut erreichbarer Gebiete so zu erschließen, dass die Teilhabe und Mobilität von Personengruppen mit unterschiedlichen physischen und motorischen Fähigkeiten sichergestellt werden kann. Doch nicht für jeden Nutzungskontext bestehen entsprechende Mobilitätskonzepte, um dies sicherzustellen. Im Beitrag werden erste Forschungsergebnisse des Einsatzes eines menschzentrierten, iterativen Gestaltungsprozesses zur Erforschung und Entwicklung eines für spezifische Nutzergruppen adaptierbaren, einachsigen, teilautonomen Elektrofahrzeugs vorgestellt, das außerhalb des öffentlichen Straßenverkehrs zum Einsatz kommen soll. Im Mittelpunkt stehen dabei das methodische Vorgehen einer nutzer- und aufgabenorientierten Anforderungsanalyse sowie das daraus abgeleitete Nutzungskonzept der Mensch-Maschine-Schnittstellen zur Fahrzeugführung sowie des Informations- und Navigationssystems. Weiter wird das methodische Vorgehen zur Evaluation und der geplanten Umsetzung des aktuellen Entwicklungsstands kurz skizziert.
Why Shared Understanding Matters - Engineering a Collaboration Process for Shared Understanding to Improve Collaboration Effectiveness in Heterogeneous Teams.Bittner, E. A. C.; Leimeister, Jan Marco. In 46th Hawaii International Conference on System Sciences (HICSS). Maui, Hawaii, 2013.
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Gebrauchstauglichkeit verschiedener Eingabegeräte zur Teleoperation eines Manipulators bei komplexen Bewegungen.Braun, R.; Hegenberg, J.; Cramar, L.; Schmidt, L. In Chancen durch Arbeits-, Produkt- und Systemgestaltung - Zukunftsfähigkeit für Produktions- und Dienstleistungsunternehmen: 59. Kongress der Gesellschaft für Arbeitswissenschaft (Krefeld 2013), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 413–416. GfA-Press, Dortmund, 2013.
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Im Beitrag wird die telemanipulative Durchführung einer Handhabungsaufgabe anhand verschiedener Steuerungen betrachtet. Anwendungskontext ist ein mobiler Roboter in einer großflächigen Industrieanlage, der aus einer Leitwarte teleoperiert werden kann. Dazu wurde als Versuchsaufgabe das Öffnen und Schließen eines Ventils zur Entwässerung einer Prozessanlage im Labor nachgestellt. Ziel der hier vorgestellten Untersuchung war es, durch eine vergleichende Evaluation die Gebrauchstauglichkeit unterschiedlicher Eingabegeräte zu erheben. Dazu wurde die Steuerung durch eine Tatstatur, eine 3D-Maus und einen Flystick miteinander verglichen.
Enhancing Absorptive Capacity in Open Innovation Communities: A synthetic view of absorptive capacity and open innovation.Blohm, I.; Kahl, V.; Leimeister, J. M.; Krcmar, H. In Virtual Communities, 1st ed., J. M. Leimeister, B. Rajagopalan (eds.), pp. 85–100. ME. Sharpe, Armonk, NY, USA, 2013.
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Gamification. Gestaltung IT-basierter Zusatzdienstleistungen zur Motivationsunterstützung und Verhaltensänderung.Blohm, I.; Leimeister, J. M. In WIRTSCHAFTSINFORMATIK. DOI: 10.1007/s11576-013-0368-0, 55(4), pp. 275–278. 2013.
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Gamification. Design of IT-Based Enhancing Services for Motivational Support and Behavioral Change.Blohm, I.; Leimeister, J. M. In Business & Information Systems Engineering (BISE). DOI: 10.1007/s12599-013-0273-5, (5 (4), pp. 275–278. 2013.
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Crowdfunding-Studie 2013/14. Analysen, Perspektiven und Erfolgsfaktoren innovativer Unternehmens- und Projektfinanzierungen. Blohm, I.; Leimeister, J. M.; Gebert, M. epubli, Berlin, 2013.
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Managing Open Innovation Communities - Development and Test of an Innovation Community Scorecard.Blohm, I.; Leimeister, J. M.; Krcmar, H. In Open innovation in the food and beverage industry: Concepts and case studies., M. Garcia Martinez (ed.), pp. 216–234. Woodhead Publishing, Woodhead, Cambridge, UK, 2013.
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Crowdsourcing: How to Benefit from (Too) Many Great Ideas.Blohm, Ivo; Leimeister, Jan Marco; Krcmar, Helmut. In MIS Quarterly Executive, 12(4), pp. 199–211. 2013.
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RoboGasInspector.Bonow, G.; Cramar, L.; Hegenberg, J.; Kroll, A.; Ordonez Müller, A.; Schmidt, L.; Soldan, S. Fachgebiet Mensch-Maschine-Systemtechnik und Fachgebiet Mess- und Regelungstechnik der Universität Kassel, 2013.
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Im vorliegenden Dokument wurden die Ergebnisse und Erkenntnisse aus dem Forschungsprojekt RoboGasInspector vorgestellt. Es wurde gezeigt, dass eine Durchführung von Inspektionen in industrieller Umgebung mittels autonomer mobiler Roboter prinzipiell möglich ist. Durch den Einsatz von optischer (Gas-)Fernmesstechnik konnte gezeigt werden, dass der Anlagenfahrer bei der routinemäßigen Überwachung der Anlagenkomponenten entlastet werden kann und sich die Anlagensicherheit durch kürzere Inspektionsintervalle und durch die zusätzliche sensorische Überwachung der Anlagenkomponenten verbessern lässt. In mehreren Tests wurde mit dem Prototyp unter realen Bedingungen die zuverlässige Inspektion, Mobilität und Gasleckortung an Rohrbrücken, Pipelines und Armaturen unter moderaten Wetterbedingungen demonstriert. Für die Produktisierung sind noch mehrere technische Arbeiten auf den Gebieten des Ex-Schutzes, Wetterfestigkeit, Mobilität, Sensorik sowie Softwareentwicklungsarbeiten (z. B. nach ISO/IEC 9126) notwendig. Neben den technischen Fragestellungen müssen aber auch die rechtlichen Fragestellungen für den kommerziellen Einsatz bezgl. des autonomen Betriebs (z. B. Produkthaftung, Gewährleistung, etc.) geklärt werden. Nicht destotrotz wurde durch das Projekt RoboGasInspector eine Grundlage für eine Produktisierung gelegt und Möglichkeiten zur Verbesserung der Wirtschaftlichkeits- und Risikobewertung aufgezeigt.
Schutzmaßnahmen gegen datenschutzunfreundliche Smartphone-Apps - Technische Möglichkeiten und rechtliche Zulässigkeit des Selbstdatenschutzes bei Apps.Bodden, E.; Rasthofer, S.; Richter, P.; Roßnagel, A. In DuD, pp. 720–725. 2013.
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Neue Arbeitsorganisation durch Crowdsourcing. Eine Literaturstudie.Leimeister, Jan Marco; Zogaj, Shkodran. In Hans-Böckler-Stiftung - Arbeitspapier 287, of Arbeitspapier, Arbeit und Soziales. Düsseldorf, 2013.
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Verbraucheröffentlichkeit im Netz – Möglichkeiten und Grenzen politischer Gestaltung. Stellungnahme des Wissenschaftlichen Beirats Verbraucher- und Ernährungspolitik beim BMELV. Lamla, Jörn; Kenning, Peter; Liedtke, Christa; Oehler, Andreas; Strünck, Christoph. 2013.
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New Insights and Methods For Predicting Face-To-Face Contacts.Scholz, Christoph; Atzmueller, Martin; Barrat, Alain; Cattuto, Ciro; Stumme, Gerd. In Proc. 7th Intl. AAAI Conference on Weblogs and Social Media. AAAI Press, Palo Alto, CA, USA, 2013.
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Managing an IT carve-out at a multi-national enterprise teaching case description.Fähling J.; Leimeister, J. M.; Yetton, P.; Krcmar, H. In Journal of Information Technology Teaching Cases (DOI: 10.1057/jittc.2013.10), (3), pp. 106–110 (DOI: 10.1057/jittc.2013.10). 2013.
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Gebrauchstauglichkeit im Labor objektiv evaluieren.Behrenbruch, K.; Schmidt, L. In Grundlagen und Anwendungen der Mensch-Maschine-Interaktion: 10. Berliner Werkstatt Mensch-Maschine-Systeme (Berlin 2013), E. D. Brandenburg, H. Smieszek (eds.), pp. 117–125. Universitätsverlag der TU Berlin, Berlin, 2013.
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Dieser Beitrag beschreibt die Ergebnisse von zwei Experimenten im Usability Labor unter Einsatz von Eye-Tracking, videobasierter Emotionserkennung bezogen auf den Gesichtsausdruck sowie der Messung der elektrodermalen Aktivität. Die Auswertung der erhobenen Daten konzentriert sich auf die Integration der drei unterschiedlichen Datenquellen und die Bildung von aussagekräftigen Kennwerten im Hinblick auf die Beurteilung der Gebrauchstauglichkeit von graphischen Benutzungsoberflächen. Im Rahmen des ersten Experimentes wird der Nachweis geführt, dass die gebildeten Kennwerte die Gebrauchstauglichkeit einer Benutzungsoberfläche abbilden und die Identifikation von kritischen Interaktionselementen ermöglichen. Das zweite Experiment untersucht die Anwendbarkeit dieser Ergebnisse im Rahmen der Evaluation der ubiquitären Software MyGroup.
The user in the loop: Enabling user participation for self-adaptive applications.Evers, Christoph; Kniewel, Romy; Geihs, Kurt; Schmidt, Ludger. In Future Generation Computer Systems. 2013.
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Abstract Future computing systems must adjust to the user’s situations, habits, and intentions. Self-adaptive applications autonomously adapt to changing contexts without asking the user. However, the self-adaptive behaviour lacks of success if it does not correspond to the user’s personal interaction habits and intentions, particularly for complex scenarios with a high degree of user interaction. Concerning the interaction design, such adaptations can be irritating and distracting for the user if they do not match the current situation. In this article we provide a solution how to integrate the user in the self-adaptation feedback loop. The user will be able to influence the adaptation behaviour at run-time and in the long term by setting individual preferences. Consequently, we achieve a harmonization between full application autonomy and user control. We implemented our generic concepts by extending an existing self-adaptation middleware with capabilities to respect the user’s application focus and interaction behaviour. A notification-based solution for user participation has been evaluated in a substantial user study with 62 participants. Although participants perceived much better control with our solution, the study made clear that notification design is specific for each adaptation type.
Visualizing The Impact of Time Series Data for Predicting User Interactions.Macek, Björn-Elmar; Atzmueller, Martin. In Proc. ASONAM 2013. ACM Press, New York, NY, USA, 2013.
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Car2Pedestrian-Communication: Protection of Vulnerable Road Users Using Smartphones.Engel, Sebastian; Kratzsch, Claudia; David, Klaus. In Advanced Microsystems for Automotive Applications 2013: Smart Systems for Safe and Green Vehicles, J. Fischer-Wolfarth, G. Meyer (eds.), pp. 31–41. Springer International Publishing, Heidelberg, Germany, 2013.
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The protection of vulnerable road users, like pedestrians and bicyclists, and the communication between vehicles and their environment, which is called Car2X-Communication, are two scopes in the development of the automotive industry that have gained much interest in the last years. This paper links together both topics by presenting a concept for the communication between vehicles and vulnerable road users, called Car2Pedestrian-Communication. A system architecture is presented that uses smartphones for the detection of vulnerable road users and for the transmission of data between the vehicle and the pedestrian. Based on the transmitted information, the collision risk between the vehicle and the pedestrian is estimated and a warning is given to the driver and the pedestrian.
Energy Saving by Context Aware Heating.Kroll, Dennis; Kusber, Rico; David, Klaus; Schumacher, Patrick; Yu, Young Jae. In Proceedings of the Informatik 2013 Workshop on Umweltinformatik zwischen Nachhaltigkeit und Wandel, of Lecture Notes in Informatics, M. Horbach (ed.), pp. 995–1004. GI, Koblenz, Germany, 2013.
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A significant part of the overall energy consumption of office buildings and households in Europe is consumed for heating. Today's standard is that heaters are controlled by thermostats so that the desired temperatures are maintained for set periods. We now present ConAH (Context Aware Heating) that controls heaters so that heating periods are minimized while keeping the comfort of the occupants. ConAH utilizes information about future presences of occupants in the rooms, called location context of the occupants. To minimize the heating periods and save energy, heaters are switched on just sufficiently before and during usage times of the room and are switched off in all other cases. To calculate the moments to switch heaters on (heat up) or off (cool down), ConAH needs: 1. the future occupancies of the room. Future room occupancies are obtained via the prediction of the occupant's context, here in terms of location. 2. the time that the room needs to heat up or to cool down between two reference temperatures. This is called the room's heating and cooling profile and is determined by experiments in a real meeting room, as well as by simulations. We present the potential energy savings of ConAH compared to a standard controller with a thermostat and explain the effects that are responsible for these results.
Look at Me - Using Signaling Theory to Design Profile Functionalities for Virtual Ideas Communities.Ebel, Philipp; Zogaj, Shkodran; Bretschneider, Ulrich; Leimeister, Jan Marco. In R&D Management Conference. Manchester, United Kingdom, 2013.
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The Lead User Method for SME - a Guidebook for Practitioners and Facilitators. Ebel, Philipp; Bretschneider, Ulrich; Leimeister, Jan-Marco. Chair for Information Systems, Kassel University, Kassel, Germany, 2013.
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Modular Architecture of Value-Added Applications for German Healthcare Telematics.Dünnebeil, S.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In Business & Information Systems Engineering (BISE), 5(1), pp. 3–16; DOI: 10.1007/s12599. 2013.
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Modulare Softwarearchitektur für Mehrwertanwendungen der deutschen Gesundheitstelematik.Dünnebeil, S.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In WIRTSCHAFTSINFORMATIK, 55(1), pp. 3–18; DOI: 10.1007/s11576. 2013.
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Verschlüsseltes Cloud Computing – Anwendung des Daten- und Geheimnisschutzrechts auf „betreibersichere“ Clouds am Beispiel der „Sealed Cloud“.Kroschwald, S. In Law as a Service (LaaS) – Recht im Internet- und Cloud-Zeitalter (Tagungsband DSRI Herbstakademie 2013), T. (Hrsg.) (ed.), pp. 289–308. 2013.
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Datenschutz bei Cloud Computing zwischen TKG, TMG und BDSG – Datenkategorien bei der Nutzung von Cloud-Diensten.Kroschwald, S.; Boos, C.; Wicker, M. In Zeitschrift für Datenschutz, pp. 205–210. 2013.
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A Modeling Language to Describe Reusable Learning Processes to Achieve Educational Objectives in Serious Games.Hirdes, Eike M.; Leimeister, Jan Marco. In 8th European Conference on Technology Enhanced Learning (EC-TEL). Paphos, Cyprus, 2013.
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Arenen des Demokratischen Experimentalismus. Zur Konvergenz von nordamerikanischem und französischem Pragmatismus.Lamla, Jörn. In Berliner Journal für Soziologie, 23, pp. 345–365. 2013.
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Evaluation eines haptischen Touchpads für die Fahrer-Fahrzeug-Interaktion.Domhardt, M.; Tunca, E.; Zoller, I.; Lotz, P.; Schmidt, L. In Grundlagen und Anwendungen der Mensch-Maschine-Interaktion: 10. Berliner Werkstatt Mensch-Maschine-Systeme (Berlin 2013), E. D. Brandenburg, H. Smieszek (eds.), pp. 9–18. Universitätsverlag der TU Berlin, Berlin, 2013.
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In aktuellen Fahrzeugen sind teilweise bereits Touchpads als Nachfolger von Dreh-Drück-Stellern, mechanischen Tasten und Schaltern zu finden. Doch im Gegensatz zu ihren mechanischen Vorgängern fehlt bei der Touchpadinteraktion eine haptische Rückmeldung bei der Auswahl und Betätigung eines auf einem Bildschirm dargestellten Eingabeelements, wie zum Beispiel einer Taste. Um diesen Nachteil zu beheben, wurde von der Firma Continental der Prototyp eines Touchpads entwickelt, der auf Basis einer eindimensional angeregten Masse haptische Rückmeldungen ermöglicht. Im Rahmen einer empirischen Nutzerstudie wurde der Einfluss der elektromechanischen haptischen Rückmeldung bei der Fahrer-Fahrzeug-Interaktion auf Fahrerablenkung, Effektivität, Effizienz des Touchpads und Zufriedenstellung des Fahrers untersucht. Die Evaluation des Prototyps des haptischen Touchpads wurde mit 32 Probanden im Fahrsimulator durchgeführt. Mit Hilfe des Lane Change Tests, Videobeobachtung und automatisierter Emotionsanalyse konnte ein signifikant positiver Einfluss für die Fahrerablenkung und die Effizienz bei der Bewältigung von Nebenaufgaben festgestellt werden. Die Ergebnisse zur Effektivität und Zufriedenstellung zeigten keinen signifikanten Einfluss.
Ergonomischer Schriftgrad für elektronische Anzeigen.Domhardt, M.; Schmidt, L. In Mensch & Computer 2013: Interaktive Vielfalt (Bremen 2013), S. Boll, S. Maaß, R. Malaka (eds.), pp. 231–240. Oldenbourg, München, 2013.
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Bei der Gestaltung von grafischen Benutzeroberflächen sind Schriftart und Schriftgrad von Texten, wie z.B. für Schaltflächenbeschriftungen, Hilfetexten oder Tooltipps, geeignet festzulegen. Verfügbare Empfehlungen aus Normen oder Fachliteratur führen zu einer Angabe der Zeichenhöhe in Millimetern statt Punkt und lassen die typografischen Besonderheiten sowie den softwaretechnischen Einfluss gänzlich unberücksichtigt. Der Lösungsansatz für ein einfach anzuwendendes Berechnungsverfahren zur Festlegung des Schriftgrades umfasste die Recherche der relevanten Grundlagen in den Bereichen Ergonomie, Typografie sowie Soft- und Hardware, aus denen Faktoren, die den Schriftgrad beeinflussen, identifiziert werden konnten. Aus diesen Faktoren konnte schrittweise eine Berechnung hergeleitet werden, die sich abschließend vereinfachen ließ. Die Anwendbarkeit und Übertragbarkeit der Berechnung konnte an einem Anwendungsbeispiel aus der Praxis nachgewiesen werden.
Nutzerbasierte Evaluation des Prototyps einer massentauglichen Ladestation für Elektromobile.Domhardt, M.; Schmidt, L. In Chancen durch Arbeits-, Produkt- und Systemgestaltung - Zukunftsfähigkeit für Produktions- und Dienstleistungsunternehmen: 59. Kongress der Gesellschaft für Arbeitswissenschaft (Krefeld 2013), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 665–668. GfA-Press, Dortmund, 2013.
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Zur nutzerbasierten Evaluation einer Ladestation für Elektromobile wurden die Aspekte der Gebrauchstauglichkeit und Akzeptanz mit Hilfe einer Stichprobe bewertet, die in Bezug auf Geschlecht, Alter, Händigkeit, Technikaffinität und Wohnortklassifikation soweit möglich repräsentativ für die Grundgesamtheit und dadurch sehr heterogen war. Die Ergebnisse zeigen, dass das Laden eines Elektromobils für die Nutzer ein neuartiger Vorgang ist, der nach ei-nem Lernprozess effizient durchgeführt werden kann. Zudem konnte ein signifikanter Zusammenhang zwischen der Wohnortsituation und jeweils den beiden Variablen Zufriedenstellung und Akzeptanz festgestellt werden. So waren städtisch Wohnende zufriedener mit der Benutzung der Ladestation und wiesen eine höhere Akzeptanz auf.
Modellierung der Biomechanik des Hand-Arm-Komplexes für die Touchscreen-Interaktion.Domhardt, M.; Schmidt, L. In Chancen durch Arbeits-, Produkt- und Systemgestaltung - Zukunftsfähigkeit für Produktions- und Dienstleistungsunternehmen: 59. Kongress der Gesellschaft für Arbeitswissenschaft (Krefeld 2013), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 229–232. GfA-Press, Dortmund, 2013.
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Ausmaß und Auswirkungen der Belastung des Hand-Arm-Systems durch die Interaktion mit stationären Touchscreens sind bisher weder ausreichend geklärt, noch finden sich Vorgaben, um diese Belastung im Gestaltungsprozess solcher Systeme berücksichtigen zu können. Daher wurde ein computergestütztes Vorgehen zur systematischen biomechanischen Analyse und Bewertung dieser Art der Touchscreen-Interaktion entwickelt. Das Verfahren erlaubt die Identifikation der beanspruchten Muskelgruppen und die ergonomische Beurteilung der Körperhaltung während des Bewegungsablaufs sowie die Berechnung des Ausmaßes der Muskelkräfte durch die notwendige Haltungsarbeit. Es konnte mit Hilfe des Verfahrens gezeigt werden, dass die Interaktion mit stationären Touchscreens fast ausschließlich den Deltamuskel beansprucht.
On the stability of context prediction.König, Immanuel; Klein, Bernd Niklas; David, Klaus. In Proceedings of the 2013 ACM Conference on Pervasive and Ubiquitous Computing Adjunct Publication, of UbiComp ’13 Adjunct, F. Mattern, S. Santini, J. F. Canny, M. Langheinrich, J. Rekimoto (eds.), pp. 471–480. ACM, New York, NY, USA, 2013.
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Energy consumption of the sensors of Smartphones.König, Immanuel; Memon, Abdul Qudoos; David, Klaus. In Proceedings of the 10th International Symposium on Wireless Communication Systems (ISWCS), pp. 1–5. IEEE, Ilmenau, Germany, 2013.
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From the first Smartphones to the current generation, huge steps have been taken in their technical development, which opened up a new era of applications and services. And the concurrent equipping of Smartphones with multiple sensors has also facilitated new applications and services. Since the energy supply of a Smartphone is quite limited, applications and services must take into account the energy consumptions of the Smartphone components. Many Smartphone components have been investigated with regard to their energy consumption. However, the energy consumption of Smartphone sensors has not yet been thoroughly investigated. With this paper we contribute an investigation on the energy consumption of Smartphone sensors. We do this in two different ways: firstly, by measuring with a volt meter and an ammeter and secondly, by using the Smartphone's internal API. From the presented results one can conclude that an average Smartphone can be used for daily sensing and context surveys.
An analysis of tag-recommender evaluation procedures.Doerfel, Stephan; Jäschke, Robert. In Proceedings of the 7th ACM conference on Recommender systems, of RecSys ’13, pp. 343–346. ACM, Hong Kong, China, 2013.
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Since the rise of collaborative tagging systems on the web, the tag recommendation task -- suggesting suitable tags to users of such systems while they add resources to their collection -- has been tackled. However, the (offline) evaluation of tag recommendation algorithms usually suffers from difficulties like the sparseness of the data or the cold start problem for new resources or users. Previous studies therefore often used so-called post-cores (specific subsets of the original datasets) for their experiments. In this paper, we conduct a large-scale experiment in which we analyze different tag recommendation algorithms on different cores of three real-world datasets. We show, that a recommender's performance depends on the particular core and explore correlations between performances on different cores.
Informationelle Selbstbestimmung Im Web 2.0 Chancen Und Risiken Sozialer Verschlagwortungssysteme. Doerfel, Stephan; Hotho, Andreas; Kartal-Aydemir, Aliye; Roßnagel, Alexander; Stumme, Gerd. Vieweg + Teubner Verlag, 2013.
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A Novel Future Internet Smart Grid Application for Energy Management in Offices.Kusber, Rico; David, Klaus; Klein, Bernd Niklas. In 2013 Future Network & Mobile Summit, pp. 1–10. IEEE, Lisbon, Portugal, 2013.
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In modern offices, energy is consumed by information and communication technology, light, heating, ventilation, and air conditioning. Parts of this energy are wasted because devices are not switched off when users leave the office. In this paper, we present our approach to a future Internet smart grid application for context-aware energy management in offices. It automatically adapts light, heating, ventilation and air conditioning, and power save modes of PCs and laptops to the presence or absence of users. We describe a proof-of-concept implementation and experimental results that show the feasibility of our approach. Overall, this shows one innovative approach, how the future Internet can support the future energy supply, which is moving towards regenerative energy, by providing improved energy efficiency.
Verbraucherdemokratie. Politische Soziologie der Konsumgesellschaft. Lamla, Jörn. Suhrkamp, Berlin, 2013.
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Understanding Diversity - The Impact of Personality on Technology Acceptance.Behrenbruch, K.; Söllner, M.; Leimeister, J. M.; Schmidt, L. In Human-Computer Interaction: 14th IFIP TC 13 International Conference (Kapstadt 2013), Part IV, of Lecture Notes in Computer Science, P. Kotzé, G. Marsden, G. Lindgaard, J. Wesson, M. Winckler (eds.), pp. 306–313. Berlin, Springer, 2013.
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Technology is becoming increasingly automated, aiming to ease the life of its users. However, besides the advantages of this trend, users are also faced with increasing risks, e.g., regarding their privacy. Examples are seamless online payments that come with the requirement to provide sensitive, e.g., credit card information, or social networks trying to elicit private information for its users. Research on technology acceptance identified two important factors for the individual decision to accept such kinds of risk: trust and personality traits. In this paper we present a model that integrates research findings for personality traits and for trust in the context of technology acceptance. We show that specific personality traits have a distinct direct or moderating effect. We, e.g., found that two personality traits moderate the relationship between perceived ease of use and intention to use. This moderation could explain the inconsistent findings on this relationship in prior research.
Awareness and Learning in Participatory Noise Sensing.Becker, Martin; Caminiti, Saverio; Fiorella, Donato; Francis, Louise; Gravino, Pietro; Haklay, Mordechai (Muki); Hotho, Andreas; Loreto, Vittorio; Mueller, Juergen; Ricchiuti, Ferdinando; Servedio, Vito D. P.; Sîrbu, Alina; Tria, Francesca. In PLOS ONE, 8(12), p. e81638. 2013.
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The development of ICT infrastructures has facilitated the emergence of new paradigms for looking at society and the environment over the last few years. Participatory environmental sensing, i.e. directly involving citizens in environmental monitoring, is one example, which is hoped to encourage learning and enhance awareness of environmental issues. In this paper, an analysis of the behaviour of individuals involved in noise sensing is presented. Citizens have been involved in noise measuring activities through the WideNoise smartphone application. This application has been designed to record both objective (noise samples) and subjective (opinions, feelings) data. The application has been open to be used freely by anyone and has been widely employed worldwide. In addition, several test cases have been organised in European countries. Based on the information submitted by users, an analysis of emerging awareness and learning is performed. The data show that changes in the way the environment is perceived after repeated usage of the application do appear. Specifically, users learn how to recognise different noise levels they are exposed to. Additionally, the subjective data collected indicate an increased user involvement in time and a categorisation effect between pleasant and less pleasant environments.
Telemedizin.Leimeister, Jan Marco; Peters, Christoph. In Enzyklopädie der Wirtschaftsinformatik – Online-Lexikon, Vol. 7, K. Kurbel, J. Becker, N. Gronau, E. Sinz, L. Suhl (eds.). Oldenbourg, München, 2013.
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Factoring von Forderungen aus Behandlungsverträgen der Krankenhäuser - datenschutzrechtlich zulässig?Jandt, S.; Roßnagel, A. In Medizinrecht, (1), pp. 17 – 23. 2013.
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Recht auf Vergessen im Internet – Diskrepanz zwischen rechtlicher Zielsetzung und technischer Realisierbarkeit.Jandt, S.; Kieselmann, O.; Wacker, A. In Datenschutz und Datensicherheit DuD, pp. 235–241. 2013.
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Factoring von Forderungen aus Behandlungsverträgen der Krankenhäuser.Jandt, S.; Roßnagel, A. In Medizinrecht, pp. 17–23. 2013.
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Automatisierte Integritätssicherung von wissenschaftlichen Primärdaten ab ihrer Erhebung.Johannes, Paul C.; Potthoff, J.; Stumpf, M. pp. 97–106. 2013.
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Social Behavior in Mobile Social Networks: Characterizing Links, Roles and Communities.Atzmueller, Martin. In Mobile Social Networking: An Innovative Approach, A. Chin, D. Zhang (eds.). Springer Verlag, Heidelberg, Germany, 2013.
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The Emergence of Mutual and Shared Understanding in the System Development Process.Hoffmann, Axel; Bittner, Eva Alice Christiane; Leimeister, Jan Marco. In Requirements Engineering: Foundation for Software Quality, Lecture Notes in Computer Science, J. Doerr, A. L. Opdahl (eds.), pp. 174–189. Springer Verlag, Essen, Germany, 2013.
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How to Select a Suitable Tool for a Software Development Project: Three Case Studies and the Lessons Learned.Kibanov, Mark; Erdmann, Dominik J.; Atzmueller, Martin. In Software Engineering 2013 - Workshopband, S. Wagner, H. Lichter (eds.). Gesellschaft für Informatik, 2013.
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This paper describes a framework for evaluating and selecting suitable soft- ware tools for a software project, which is easily extendable depending on needs of the project. For an evaluation, we applied the presented framework in three different projects. These projects use different software development methods (from classical models to Scrum) in different environments (industry and academia). We discuss our experiences and the lessons learned.
Fostering Initial Trust in Applications – Developing and Evaluating Requirement Patterns for Application Websites.Hoffmann, Axel; Hoffmann, Holger; Söllner, Matthias. In European Conference on Information Systems (ECIS). Utrecht, The Netherlands, 2013.
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When users first encounter an application, or decide which application from a number of options to use, their initial trust in this application is a determinant for their willingness to adopt it. At this time, users have not yet had a chance to interact with the application, and hence their perceptions are based on the application presentation on the website rather than on the application’s actual performance. To help providers select supporting measures for the website to improve the perceived trustworthiness of their application, we propose a set of requirement patterns. Patterns are used in requirements engineering to recognize important and recurring issues, thus reducing the effort during requirements specification. We developed them from trust theory, following the design-science based evaluation framework for patterns. To evaluate the feasibility of our approach, 17 teams used the patterns to specify a website for a mobile application. The results indicate that the teams frequently used ten of our proposed patterns. A subsequent survey regarding pattern quality shows an overall acceptance and that the team members rated the patterns as comprehensible, understandable and helpful. We hence conclude that our approach to incorporating trust-based requirements to foster initial trust in application website specifications is feasible.
Evolution of Contacts and Communities in Networks of Face-to-Face Proximity (Extended Abstract, Resubmission).Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd. In Proc. LWA 2013 (KDML Special Track). University of Bamberg, Bamberg, Germany, 2013.
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Name Me If You Can(!) - Leveraging Networks of Given Names.Mitzlaff, Folke. In Proceedings from Sunbelt XXXIII. 2013.
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Beweissicheres elektronisches Laborbuch Anforderungen, Konzepte und Umsetzung zur langfristigen, beweiswerterhaltenden Archivierung elektronischer Forschungsdaten und -dokumentation.Johannes, P. C; Potthoff, J.; Roßnagel, A.; Madiesh, M.; Neumair, B.; Hackel, S. Nomos Verlagsgesellschaft, Baden-Baden, 2013.
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Reihe Der Elektronische Rechtsverkehr - Band 29.
Expertenevaluierung durch die Methode des lauten Denkens am Beispiel eines Online-Lernspiels.Ackermann, L.; Heußner, M.; Schmidt, L. In 11. E-Learning Fachtagung Informatik der Gesellschaft für Informatik e. V. (Bremen 2013), of Lecture Notes in Informatics (LNI) - Proceedings, A. Breiter, C. Rensing (eds.), pp. 257–262. Köllen, Bonn, 2013.
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Für den E-Learning-Anteil einer Weiterbildung wird ein browserbasiertes Lernspiel entwickelt, welches die Weiterbildungsteilnehmer im Selbststudium nutzen sollen. Die vorliegende Ausarbeitung stellt die Evaluation des Lernspiels durch ein interdisziplinäres Expertenteam dar. Durch die Methode des lauten Denkens konnten 108 Probleme des Lernspiels aufgedeckt werden.
Applying an Integrated Socio-Technical Design Method for Ubiquitous and Social Software – Experiences and Lessons Learned.Atzmueller, M.; Behrenbruch, K.; Hoffmann, A.; Kibanov, M.; Leimeister, J. M.; Roßnagel, A.; Macek, B. E.; Mueller, J.; Scholz, C.; Skistims, H.; Söllner, M.; Schmidt, L.; Stumme, G. In ICSE, (4), p. 126. 2013.
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eID im Forschungsprozess,.Johannes, P.C.; Potthoff, J.; Roßnagel, A.; Madiesh, M.; Hackel, S.; B., Neumair. In Informationssicherheit stärken Vertrauen in die Zukunft schaffen, B. für Sicherheit in der Informationstechnik (ed.), pp. 405–418. 2013.
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Evolution of Contacts and Communities in Networks of Face-to-Face Proximity (Extended Abstract).Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd. In Proc. LWA 2013 (KDML Special Track). University of Bamberg, Bamberg, Germany, 2013.
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On the Evolution of Contacts and Communities in Networks of Face-to-Face Proximity.Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd. In Proceedings of the 2013 IEEE Cyber, Physical and Social Computing, CPSCom 2013, Beijing, China, 20-23 August, 2013, J. E. Guerrero (ed.), pp. 993–1000. IEEE Computer Society, Los Alamitos, CA, USA, 2013.
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Communities are a central aspect in the formation of social interaction networks. In this paper, we analyze the evolution of communities in networks of face-to-face proximity. As our application context, we consider four scientific conferences. We compare the basic properties of the contact graphs to describe the properties of the contact networks and analyze the resulting community structure using state-of-the-art automic community detection algorithms. Specifically, we analyze the evolution of contacts and communities over time to consider the stability of the respective communities. In addition, we assess different factors which have an influence on the quality of community prediction. Overall, we provide first important insights into the evolution of contacts and communities in face-to-face contact networks.
Success Factors for Requirement Patterns Approaches - Exploring Requirements Analysts’ Opinions and Whishes.Hoffmann, Axel; Janzen, Andrej; Hoffmann, Holger; Leimeister, Jan Marco. In Sozio-technisches Systemdesign im Zeitalter des Ubiquitous Computing (SUBICO 2013) im Rahmen der Informatik 2013. Koblenz, Germany, 2013.
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Towards the automated evaluation of crowd work: Machine-learning based classification of complex texts simplified by laymen.Hoffmann, H.; Bullinger, A.C.; Fellbaum, C. In 46th Hawaii International Conference on System Sciences (HICSS 2013). Grand Wailea, 2013.
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Elektronische Formulare im Verwaltungsverfahren - Neue Form des Schriftformersatzes, Multimedia und Recht (MMR), 11/2013, S. 694 – 700.Johannes, Paul C. In Multimedia und Recht, pp. 694 – 700. 2013.
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Entwurf einer EU-Verordnung über elektronische Identifizierung und Vertrauensdienste. Neue Regeln für elektronische Sicherheitsdienste.Johannes, P. C.; Roßnagel, A. In Zeitschrift für Datenschutz (ZD), pp. 65 – 72. 2013.
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Ubiquitous Social Media Analysis. Atzmueller, Martin; Chin, Alvin; Helic, Denis; Hotho, Andreas. In Vol. 8329 of Lecture Notes in Computer Science. Springer Verlag, Heidelberg, Germany, 2013.
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Community and Pattern Analytics in Social Networks.Atzmueller, Martin. L. 2013 (ed.). 2013.
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eID im Forschungsprozess.Johannes, P. C.; Potthoff, J.; Madiesh, M.; Hackel, S.; Neumair, B.; Roßnagel, A. In BSI (Hrsg.), Informationssicherheit stärken, Vertrauen in die Zukunft schaffen, Tagungsband 13. Deutscher IT-Sicherheitskongress 2013, 13. 2013.
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12 Years of GENEX Framework: What did Practice Learn from Science in Terms of Web-Based Ideation?Kipp, P.; Wieck, E.; Bretschneider, U.; Leimeister, J. M. In Wirtschaftsinformatik Konferenz (WI) 2013. Leipzig, Germany, 2013.
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Interdisziplinäre Sicherheitsanalyse.Kieselmann, Olga; Kopal, Nils; Wacker, Arno. In 10. Berliner Werkstatt Mensch-Maschine-Systeme - Grundlagen und Anwendungen der Mensch-Maschine-Interaktion. Berlin, 2013.
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Im Rahmen der Evaluation einer ubiquitären Anwendung wird in der Regel auch die Erfüllung der Sicherheitsanforderungen durch Sicherheits-Spezialisten überprüft. In einem rein disziplinären Vorgehen wird dies vollständig unabhängig von den anderen Disziplinen z.B. Benutzervertrauen oder rechtliche Anforderungen durchgeführt. Die dabei entdeckten Sicherheitsmängel berücksichtigen häufig nicht die Endnutzer und können Auswirkung auf andere Disziplinen haben. Daher schlagen wir in diesem Beitrag eine neue interdisziplinäre Sicherheitsanalyse vor, welche den Endnutzer und die Abhängigkeiten zu anderen Disziplinen berücksichtigt. Dies erreichen wir, indem wir jeden Schritt der klassischen Sicherheitsanalyse interdisziplinär durchführen und erkannte Bedrohungen während einer Systemevaluation als konkrete Angriffe simulieren. Darüber hinaus zeigen wir die konkrete Anwendung unserer interdisziplinären Sicherheitsanalyse am Beispiel einer prototypischen Anwendung.
Towards the Ambient Classroom: An Environment for Enhancing Collaborative Educational Processes.Atzmueller, Martin; Bobek, Szymon; Kibanov, Mark; Nalepa, Grzegorz J. In Context’13 - Smart University Workshop (SmartUni) 2013, T. Roth-Berghofer, S. Oussena, M. Atzmueller (eds.). 2013.
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With the rapid development of mobile technologies like, e.g., RFID tags, smartphones, and tablets, ambient intelligence applications have gained a huge popularity in recent years. However, most of the existing approaches aim at developing ambient environments that are rather static, and do not take the aspect of social interaction between the inhabitants into account. We argue that this is essential for smart classrooms, meeting rooms and other environments that are strictly based on mechanisms of human face-to-face interactions. In the context of the smart university, we propose the ambient classroom system for enhancing collaborative educational processes using sensor fusion, data mining, semantic technologies, and inference methods.
Automatisierte Integritätssicherung von wissenschaftlichen Primärdaten ab ihrer Erhebung.J. Potthoff, P. C. Johannes. In 6. DFN-Forum Kommunikationstechnologien, pp. 97–106. Bonner Köllen Verlag, 2013.
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Collaborative Idea Elaboration on Web-Based Ideation Platforms.Kipp, Philipp; Bittner, E. A. C.; Hoffmann, Axel; Bretschneider, Ulrich; Leimeister, Jan Marco. In Eighth International Conference on Design Science Research in Information Systems and Technology (DESRIST). Helsinki, Finland, 2013.
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How Customers Trust Mobile Marketing Applications.Janson, Andreas; Hoffmann, Axel; Hoffmann, Holger; Leimeister, Jan Marco. In International Conference on Information Systems (ICIS). Milano, Italy, 2013.
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Investigation and Compensation of the Magnetic Deviation on a Magnetometer of a Smartphone Caused by a Vehicle.Memon, A.Q.; Lau, Sian Lun; David, K. In Vehicular Technology Conference (VTC Fall), 2013 IEEE 78th, pp. 1–5. 2013.
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The built-in magnetometer sensor of a smartphone is an attractive sensor suitable for detecting the direction of pedestrians' movements. This detection can be used to enable collision avoidance between cars and pedestrians, particularly if the pedestrian is not visible from inside the moving car. However, surrounding metallic materials have undesired effects and this influences the accuracy of the magnetometer. This paper investigates the amount of magnetic deviation caused by surrounding metallic material, such as a car, when the magnetometer sensor of a smartphone is used to determine the orientation. A set of experiments were conducted to investigate the effects of magnetic deviation. The experimental setup includes both parked and moving cars. Based on the results of the experiments, we show that the magnetic deviation can influence the efficiency of distinguishing the endangered or secure pedestrians in a car to pedestrian collision avoidance scenario. If we intend to use the magnetometer to detect the pedestrians' movement directions, the magnetic deviation needs to be compensated in order to detect the accurate movement direction of pedestrians. Therefore, in this paper we present a compensation algorithm, which successfully compensates the possible amount of magnetic deviation in the magnetometer of a smartphone.
Die elektronische Zukunft der Anwaltstätigkeit – Rechtsprobleme beim Outsourcing von Scan-Dienstleistungen.Jandt, Silke; Nebel, Maxi. In Neue Juristische Wochenschrift, (22), pp. 1570–1575. 2013.
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Kollaborative Verbesserung von Ideen auf Web-basierten Ideenplattformen.Kipp, Philipp; Leimeister, Jan Marco. In Mensch & Computer 2013 - Leichtgewichtige Werkzeuge zur Unterstützung von Kooperation und persönlichem Wissensmanagement. Bremen, Germany, 2013.
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2012[ to top ]

Haftung von Anbietern kollaborativer Internetplattformen – Störerhaftung für User Generated Content?Krieg, R.; Kartal-Aydemir, A. In MMR, (10), pp. 647 – 652. 2012.
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Wettbewerb vs. Kollaboration: Wie verhalten sich Teilnehmer in Ideenwettbewerben und Ideen Communities?Bretschneider, U.; Zogaj, S.; Leimeister, J.M. In VHB Jahrestagung 2012. Bozen/Bolzano, Italy, 2012.
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Idea Generation in Virtual Communities for Innovation: The Influence of Participants’ Motivation on Idea Quality.Bretschneider, U.; Rajagopalan, B.; Leimeister, J. M. In 45. Annual Hawaii International Conference on System Sciences (HICSS). Grand Wailea, Maui, 2012.
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Das Recht des Forschers auf Datenschutz.Johannes, Paul C. In Datenschutz und Datensicherheit, 36(11), pp. 817–822. 2012.
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Design and evaluation of a service-oriented collaborative consumption platform for the elderly.Koene, Philip; Köbler, Felix; Esch, Sebastian; Leimeister, Jan Marco; Krcmar, Helmut. In CHI Extended Abstracts on Human Factors in Computing Systems, J. A. Konstan, E. H. Chi, K. Höök (eds.), pp. 2537–2542. ACM, New York, NY, USA, 2012.
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Extending FolkRank with content data.Landia, Nikolas; Anand, Sarabjot Singh; Hotho, Andreas; Jäschke, Robert; Doerfel, Stephan; Mitzlaff, Folke. In Proceedings of the 4th ACM RecSys workshop on Recommender systems and the social web, of RSWeb ’12, pp. 1–8. ACM, Dublin, Ireland, 2012.
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Real-world tagging datasets have a large proportion of new/ untagged documents. Few approaches for recommending tags to a user for a document address this new item problem, concentrating instead on artificially created post-core datasets where it is guaranteed that the user as well as the document of each test post is known to the system and already has some tags assigned to it. In order to recommend tags for new documents, approaches are required which model documents not only based on the tags assigned to them in the past (if any), but also the content. In this paper we present a novel adaptation to the widely recognised FolkRank tag recommendation algorithm by including content data. We adapt the FolkRank graph to use word nodes instead of document nodes, enabling it to recommend tags for new documents based on their textual content. Our adaptations make FolkRank applicable to post-core 1 ie. the full real-world tagging datasets and address the new item problem in tag recommendation. For comparison, we also apply and evaluate the same methodology of including content on a simpler tag recommendation algorithm. This results in a less expensive recommender which suggests a combination of user related and document content related tags.</p><p>Including content data into FolkRank shows an improvement over plain FolkRank on full tagging datasets. However, we also observe that our simpler content-aware tag recommender outperforms FolkRank with content data. Our results suggest that an optimisation of the weighting method of FolkRank is required to achieve better results.
Modellierung von IT-gestützten wohnbegleitenden Dienstleistungen – Anforderungen und Lösungsansatz.Meis, J.; Menschner, P.; Leimeister, J.M. In Tagungsband der Multikonferenz Wirtschaftsinformatik (MKWI) 2012. Braunschweig, Germany, 2012.
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Toward the Use of Software Requirement Patterns for legal Requirements.Hofmann, A.; Schulz, T.; Hoffmann, H.; Jandt, S.; Roßnagel, A.; Leimeister, Jan-Marco. 2012.
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A Literature Review on the Indicators for the Measurement of Technology Mediated Learning Productivity.Bitzer, Philipp; Lehmann, Katja; Leimeister, Jan Marco. In Proceedings of the Eighteenth Americas Conference on Information Systems (AMCIS). Seattle, Washington, USA, 2012.
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Normative Anforderungsanalyse für ein RFID-basiertes Assistenzsystem für Arbeitsgruppen.Behrenbruch, K.; Jandt, S.; Schmidt, L.; Roßnagel, A. In Gestaltung nachhaltiger Arbeitssysteme – Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft: Kassel 2012, G. für Arbeitswissenschaft e. V. (ed.), pp. 473–476. GfA-Press, 2012.
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Service Engineering für IT-basierte Dienstleistungen 50+.Menschner, P.; Prinz, A.; Leimeister, J.M. In Technologiegestützte Dienstleistungsinnovation in der Gesundheitswirtschaft, K. Shire, J. Leimeister (eds.), pp. 111–133. Gabler Verlag, Wiesbaden, Germany, 2012.
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Mining Social Media.Atzmueller, Martin. In Informatik Spektrum, 35(2), pp. 132–135. 2012.
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Data Mining, Validation and Collaborative Knowledge Capture.Atzmueller, Martin; Beer, Stephanie; Puppe, Frank. In Collaboration and the Semantic Web: Social Networks, Knowledge Networks, and Knowledge Resources, S. Brüggemann, C. d’Amato (eds.), pp. 149–167. IGI Global, 2012.
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Absorption Processes and IT Capabilities in Open Innovation Communities.Blohm, I.; Leimeister, J. M.; Krcmar, H. In Pre-ICIS 2012 SIM Academic Workshop. AIS, Orlando, FL, USA, 2012.
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Achieving User Participation for Adaptive Applications.Evers, C.; Kniewel, R.; Geihs, K.; Schmidt, L. In Ubiquitous Computing and Ambient Intelligence: 6th International Conference (Vitoria-Gasteiz 2012), Vol. 7656 of Lecture Notes in Computer Science, J. Bravo, D. López-de Ipina, F. Moya (eds.), pp. 200–207. Springer, Berlin, 2012.
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Adaptive applications establish the basis for many ubiquitous computing scenarios as they can dynamically adapt to changing contexts. But adaptive applications lack of success when the adaptive behaviour does not correspond to the user’s interaction habits. A user study revealed that such applications are not satisfying for complex scenarios with a high degree of user interaction. We claim that there must be a trade-off between automation and user participation. By extending an existing adaptation middleware with capabilities to respect user preference and interaction behaviour we demonstrate how to integrate the user in the self-adaptation loop. Interdisciplinary results from the fields of usability engineering and interaction design include the need for an adaptation notification concept to avoid mismatching adaptation behaviour.
Publication Analysis of the Formal Concept Analysis Community.Doerfel, Stephan; Jäschke, Robert; Stumme, Gerd. In Formal Concept Analysis - 10th International Conference, ICFCA 2012, Leuven, Belgium, May 7-10, 2012. Proceedings, Vol. 7278 of Lecture Notes in Computer Science, F. Domenach, D. Ignatov, J. Poelmans (eds.), pp. 77–95. Springer, Berlin/Heidelberg, 2012.
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We present an analysis of the publication and citation networks of all previous editions of the three conferences most relevant to the FCA community: ICFCA, ICCS and CLA. Using data mining methods from FCA and graph analysis, we investigate patterns and communities among authors, we identify and visualize influential publications and authors, and we give a statistical summary of the conferences’ history.
Standardisierung und (Teil-) Automatisierung telemedizinischer Dienstleistungen.Keim, Stephan; Peters, Christoph; Leimeister, Jan Marco. In Working Paper Series, Nr. 1, pp. 1–18. Kassel Germany, 2012.
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Service Engineering & Management: Proceedings der Teilkonferenz im Rahmen der Multi-Konferenz Wirtschaftsinformatik. Böhmann, T.; Knackstedt, R.; Leimeister, J. M.; Nüttgens, M.; Thomas, O. 1st ed. Books on Demand; ISBN: 978-3848221097, Norderstedt, 2012.
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Leveraging Publication Metadata and Social Data into FolkRank for Scientific Publication Recommendation.Doerfel, Stephan; Jäschke, Robert; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 4th ACM RecSys workshop on Recommender systems and the social web, of RSWeb ’12, pp. 9–16. ACM, Dublin, Ireland, 2012.
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The ever-growing flood of new scientific articles requires novel retrieval mechanisms. One means for mitigating this instance of the information overload phenomenon are collaborative tagging systems, that allow users to select, share and annotate references to publications. These systems employ recommendation algorithms to present to their users personalized lists of interesting and relevant publications. In this paper we analyze different ways to incorporate social data and metadata from collaborative tagging systems into the graph-based ranking algorithm FolkRank to utilize it for recommending scientific articles to users of the social bookmarking system BibSonomy. We compare the results to those of Collaborative Filtering, which has previously been applied for resource recommendation.
Ideas Contributors Wanted - Towards The Adaption Of the Pyramiding Approach to Recruit New Idea Contributors For An Virtual Ideas Competition.Ebel, P.; Bretschneider, U.; Leimeister, J. M. In European Academy of Management Conference (EURAM). Rotterdam, Netherlands, 2012.
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TeleMediaR – Telekommunikations- und Multimediarecht, dtv-Textsammlung mit einer Einführung. Geppert, M.; Roßnagel, A. 9th ed. Beck-Texte im dtv, München, 2012.
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Erarbeitung eines Workshopdesigns zur weiteren Ausarbeitung der Ergebnisse einer virtuellen Ideencommunity.Ebel, P.; Bretschneider, U.; Leimeister, J. M. In Proceedings zum Workshop Gemeinschaft in Neuen Medien (GeNeMe 12). Dresden, Germany, 2012.
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Scorecard im Einsatz: Controlling von Innovationscommunities.Blohm, Iva; Rieger, Markus; Leimeister, Jan Marco; Krcmar, Helmut. In Journal Arbeit, 11(1), pp. 31–32. 2012.
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Ubicon: Observing Social and Physical Activities.Atzmueller, Martin; Becker, Martin; Doerfel, Stephan; Kibanov, Mark; Hotho, Andreas; Macek, Björn-Elmar; Mitzlaff, Folke; Mueller, Juergen; Scholz, Christoph; Stumme, Gerd. In Proc. 4th IEEE Intl. Conf. on Cyber, Physical and Social Computing (CPSCom 2012). 2012.
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Anwendung der TR-RESISCAN und TR-ESOR im Gesundheitswesen.Hühnlein, Detlef; Jandt, Silke; Korte, Ulrike; Nebel, Maxi; Schumacher, Astrid. G.-L. GI-GMDS-Jahrestagung 2012 (ed.). 2012.
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Untersuchung bestehender Geschäftsmodelle etablierter Cloud Anbieter.Gierczak, Michael; Söllner, Matthias; Leimeister, Jan Marco. In ConLife 2012 Academic Conference. Cologne, Germany, 2012.
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Determinants of physicians’ technology acceptance for e-health in ambulatory care.Dünnebeil, Sebastian; Sunyaev, Ali; Blohm, Ivo; Leimeister, Jan Marco; Krcmar, Helmut. In International Journal of Medical Informatics, (81), pp. 746–760. 2012.
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RFID-Technologie für das Eventmanagement.Bretschneider, Ulrich; Leimeister, Jan Marco. In WiK-Zeitschrift für die Sicherheit der Wirtschaft, (5), pp. 38–40. 2012.
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Recommender Systems for Social Tagging Systems. Balby Marinho, L.; Hotho, A.; Jäschke, R.; Nanopoulos, A.; Rendle, S.; Schmidt-Thieme, L.; Stumme, G.; Symeonidis, P. In of SpringerBriefs in Electrical and Computer Engineering. Springer, 2012.
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Social Tagging Systems are web applications in which users upload resources (e.g., bookmarks, videos, photos, etc.) and annotate it with a list of freely chosen keywords called tags. This is a grassroots approach to organize a site and help users to find the resources they are interested in. Social tagging systems are open and inherently social; features that have been proven to encourage participation. However, with the large popularity of these systems and the increasing amount of user-contributed content, information overload rapidly becomes an issue. Recommender Systems are well known applications for increasing the level of relevant content over the “noise” that continuously grows as more and more content becomes available online. In social tagging systems, however, we face new challenges. While in classic recommender systems the mode of recommendation is basically the resource, in social tagging systems there are three possible modes of recommendation: users, resources, or tags. Therefore suitable methods that properly exploit the different dimensions of social tagging systems data are needed. In this book, we survey the most recent and state-of-the-art work about a whole new generation of recommender systems built to serve social tagging systems. The book is divided into self-contained chapters covering the background material on social tagging systems and recommender systems to the more advanced techniques like the ones based on tensor factorization and graph-based models.
A Personality Based Design Approach Using Subgroup Discovery.Behrenbruch, Kay; Atzmueller, Martin; Evers, Christoph; Schmidt, Ludger; Stumme, Gerd; Geihs, Kurt. In Human-Centred Software Engineering, Vol. 7623, pp. 259–266. Springer, Heidelberg, Germany, 2012.
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To facilitate user-centered software engineering, developers need an easy to grasp understanding of the user. The use of personas helps to keep specific user needs in mind during the design process. Technology acceptance is of particular interest for the design of innovative applications previously unknown to potential users. Therefore, our research focuses on defining a typology of relevant user characteristics with respect to technology acceptance and transferring those findings to the description of personas. The presented work focuses on the statistical relationship between technology acceptance and personality. We apply sub-group discovery as a statistical tool. Based on the statistically derived subgroups and patterns we define the mentioned personas to help developers to understand different forms of technology acceptance. By integrating the specifically defined personas into existing methods in the field of software engineering the feasibility of the presented approach is demonstrated.
Mining Social Media: Key Players, Sentiments, and Communities.Atzmueller, Martin. In WIREs: Data Mining and Knowledge Discovery, In Press. 2012.
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Onto Collective Intelligence in Social Media: Exemplary Applications and Perspectives.Atzmueller, Martin. In Proc. 3rd International Workshop on Modeling Social Media (MSM 2012), Hypertext 2012. ACM Press, New York, NY, USA, 2012.
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Gesellschaftlich notwendige Dienstleistungen - soziale Innovationen denken lernen.Leimeister, Jan Marco; Peters, Christoph. In WISO-Diskurs - Expertisen und Dokumentationen zur Wirtschafts- und Sozialpolitik, Arbeitspapier des Arbeitskreises Dienstleistungen der Friedrich-Ebert-Stiftung. Bonn, Germany: Friedrich-Ebert-Stiftung, Abteilung Wirtschafts- und Sozialpolitik, 2012.
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Sicherheitsmaßnahmen an Flughäfen im Lichte der Grundrechte.Kroschwald, Steffen. Vol. 11, F. Wirtschaftsrecht (ed.). kassel university press, 2012.
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Akzeptanz technikferner Nutzergruppen für innovative Smartphone-Apps.Behrenbruch, K.; Kniewel, R.; Niemczyk, S.; Schmidt, L. In Useware 2012: Mensch-Maschine-Interaktion (Kaiserslautern 2012), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 65–74. VDI-Verlag, Düsseldorf, 2012.
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Zu einer sozialverträglichen Technikgestaltung neuartiger Smartphone-Anwendungen gehört es, die Bedürfnisse unterschiedlicher Nutzergruppen zu berücksichtigen. Dieser Beitrag stellt die Kasseler Entwicklungsmethodik vor, die darauf ausgerichtet ist, softwarebasierte Systeme sozialverträglich zu gestalten und im Rahmen der Zusammenarbeit im Forschungsprojekt VENUS gemeinsam entworfen wird. Die koordinierte Zusammenarbeit von Experten aus den Bereichen Informatik, Rechts- und Wirtschaftswissenschaften sowie Ergonomie im Rahmen der Kasseler Methodik wird im Folgenden am Beispiel der Gestaltung der Smartphone Applikation Meet-U dargestellt. Dabei wird das Entwicklungsergebnis mit Kasseler Methodik (Meet-U-A) im Rahmen einer Evaluation der Nutzerakzeptanz mit einer Version B der Anwendung (Meet-U-B) verglichen, die ohne Kasseler Methodik entwickelt wurde. Die Auswertung der Evaluationen (n=150 bzw. n=153) erfolgte mit dem Ziel, die folgende Hypothese zu prüfen: Die Entwicklung nach Kasseler Methodik führt zu einer höheren Akzeptanz bei einer relativ technikfernen Nutzergruppe. Für die technikfernen Personen konnte tatsächlich eine signifikante Erhöhung der Akzeptanz von etwa 50% (Meet-U-B) auf 70% (Meet-U-A) festgestellt werden. Die Ergebnisse der Evaluationen werden bezogen auf ihre Aussagekraft für die Qualität der Kasseler Methodik diskutiert.
Zulässige Erhebung von Daten zu Forschungszwecken.Jandt, S.; Desoi, M. In Datenschutz und Datensicherheit, pp. 895–901. 2012.
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Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy.Krause, Beate; Lerch, Hana; Hotho, Andreas; Roßnagel, Alexander; Stumme, Gerd. In Informatik Spektrum, 35(1), pp. 12–23. 2012.
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Unmanned Inspection of Large Industrial Environments: Insights into Research Project RoboGasInspector.Barz, T.; Bonow, G.; Hegenberg, J.; Habib, K.; Cramar, L.; Welle, J.; Schulz, D.; Kroll, A.; Schmidt, L. In Future Security: 7th Security Research Conference (Bonn 2012), of Communications in Computer and Information Science, N. Aschenbruck, P. Martini, M. Meier, J. Tölle (eds.), pp. 216–219. Springer, Berlin, 2012.
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Industrial plants are a vital and common asset of modern society in a various number of ways. Safety of large industrial complexes that handle hazardous chemical materials is of utter importance to prevent harm to employees, general population, our natural environment and valuable infrastructure. Therefore, beside the plant owner’s own financial interest to guarantee faultless and safe operation, legal regulations have to be adhered due to strong public interest as well. An important measure to ensure safety is the implementation of regular inspection tours by maintenance personnel, who examine the often widely-stretched process infrastructure on foot and locally search for signs of beginning leakage. The Research Project RoboGasInspector was started to develop new means of aiding with the fulfillment of this essential task. This article gives an insight into this ongoing research project, where autonomous mobile robotics is combined with laser-based remote gas detection technology in order to create a proof-of-concept inspection system prototype, which can relieve humans of this monotonous and highly repetitive work.
›Netizenship‹ oder Alltagsökonomie? Typologische Betrachtungen über die Motivlagen und Beteiligungsmuster von Internetnutzern sowie die Zukunft digitaler Demokratie.Lamla, Jörn. In consumers@work. Zum neuen Verhältnis von Unternehmen und Usern im Web 2.0., T. Beyreuther, K. Duske, C. Eismann, S. Hornung, F. Kleemann (eds.), pp. 152–179. Campus, Frankfurt/ New York, 2012.
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Scenario planning for innovation development: an overview of different innovation domains.Fähling, J.; Huber, M. J.; Böhm, F.; Leimeister, J. M.; Krcmar, H. In Int. J. Technology Intelligence and Planning (IJTIP), 8(2), pp. 95–114. 2012.
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Die TKG-Novelle 2012.Johannes, P. C.; Kartal, A.; Roßnagel, A. In Kommunikation & Recht (K & R), (4), pp. 244–250. 2012.
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Devising a Method for Developing Knowledge-Intense, Person-Oriented Services - Results from Early Evaluation.Menschner, P.; Leimeister, J. M. In 45. Hawaii International Conference on System Sciences (HICSS). Maui, USA, 2012.
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Crowdsourcing: Crowdfunding, Crowdvoting, Crowdcreation.Leimeister, J. M. In Zeitschrift für Controlling und Management (ZFCM), (56), pp. 388–392. 2012.
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Performance Dashboard für Dozenten in der universitären Lehre.Lehmann, K.; Thillainathan, N.; Bitzer, P.; Leimeister, J. M. In Multikonferenz der Wirtschaftsinformatik (MKWI). Braunschweig, Deutschland, 2012.
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Managing the Masses - Developing an Educational Dashboard for Lecturers in Large-Scale Lectures.Bitzer, P.; Lehmann, K.; Hirdes, E.M.; Thillainathan, N. In European Conference on Information Systems (ECIS). Barcelona, Spain, 2012.
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On the Importance of National Culture for the Design of Information Systems.Kummer, T.-F.; Leimeister, J. M.; Bick, M. In Business & Information Systems Engineering, 4(6), pp. 317–330. 2012.
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Die Bedeutung von nationaler Kultur für die Gestaltung von Informationssystemen.Kummer, T.-F.; Leimeister, J. M.; Bick, M. In WIRTSCHAFTSINFORMATIK, 54(6), pp. 303–318. 2012.
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A Personality Based Design Approach Using Subgroup Discovery.Behrenbruch, K.; Atzmüller, M.; Evers, C.; Schmidt, L.; Stumme, G.; Geihs, K. In 4th International Conference on Human-Centered Software Engineering (Toulouse 2012), of Lecture Notes in Computer Science, M. Winckler, P. Forbrig, R. Bernhaupt (eds.), pp. 259–266. Springer, Berlin, 2012.
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To facilitate user-centered software engineering, developers need an easy to grasp understanding of the user. The use of personas helps to keep specific user needs in mind during the design process. Technology acceptance is of particular interest for the design of innovative applications previously unknown to potential users. Therefore, our research focuses on defining a typology of relevant user characteristics with respect to technology acceptance and transferring those findings to the description of personas. The presented work focuses on the statistical relationship between technology acceptance and personality. We apply sub-group discovery as a statistical tool. Based on the statistically derived subgroups and patterns we define the mentioned personas to help developers to understand different forms of technology acceptance. By integrating the specifically defined personas into existing methods in the field of software engineering the feasibility of the presented approach is demonstrated.
Leitfadengestützte Modellierung des Nutzungskontextes.Domhardt, M.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 487–490. GfA-Press, Dortmund, 2012.
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Das Verständnis des Nutzungskontextes ist der Ausgangspunkt für die menschzentrierte Gestaltung gebrauchstauglicher interaktiver Systeme. Zur Ermittlung des Nutzungskontextes stehen unterschiedliche Methoden zur Verfügung, deren zentraler Bestandteil die Befragung von typischen Nutzern ist. Bei neuartigen Systemen oder Technologien sind diese Nutzer jedoch nicht vorhanden. Der Beitrag gibt eine Übersicht über die einzelnen Methoden und zeigt am Beispiel einer Ladestation für Elektromobile einen Weg, wie der Nutzungskontext auch von potentiellen Nutzern methodisch erhoben werden kann.
Analyse technologieabhängiger Interaktionsmöglichkeiten bei berührungsempfindlichen Anzeigen.Domhardt, M.; Schmidt, L. In Useware 2012: Mensch-Maschine-Interaktion (Kaiserslautern 2012), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 1–11 im Nachtrag. VDI-Verlag, Düsseldorf, 2012.
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Bei der Gestaltung von interaktiven Systemen mit einem Touchscreen als Mensch-Maschine-Schnittstelle kann man zwischen Touchscreens unterschiedlicher technologischer Funktionsprinzipien wählen. Die unterschiedlichen Technologien wirken sich jedoch auch auf die Interaktionsmöglichkeiten aus. Der Beitrag liefert daher eine Übersicht zu den interaktionsbeeinflussenden Faktoren bei der Touchscreenauswahl und legt den Aufbau und die Funktionsweise der unterschiedlichen Touchscreentechnologien dar. Die einzelnen Technologien wurden im Bezug auf Interaktionsbeeinflussende Faktoren analysiert und die Ergebnisse im Hinblick auf die gezielte systematische Auswahl einer geeigneten Touchscreentechnologie aufbereitet und dargestellt.
An Architecture for Complex Peer-to-Peer Systems.Holzapfel, Sebastian; Wacker, Arno; Weis, Torben; Wander, Matthäus. In Proceedings of the 4th IEEE International Workshop on Digital Entertainment, Networked Virtual Environments, and Creative Technology, DENVECT 2012, held in conjunction with the IEEE Consumer Communications and Networking Conference, CCNC 2012. Las Vegas, Nevada, 2012.
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Hemmnisse bei der Nutzung von Cloud Computing im B2B-Bereich und die Zuordnung dieser zu den verschiedenen Vertrauensbeziehungen.Gebauer, Lysann; Söllner, Matthias; Leimeister, Jan Marco. In ConLife 2012 Academic Conference. Cologne, Germany, 2012.
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Business Models for Electric Healthcare Services.Dünnebeil, S.; Leimeister, J. M.; Krcmar, H. In Critical Issues for the Development of Sustainable E-health Solutions, 1st ed., N. Wickramasinghe, R. Bali, S. Kirn, R. Suomi (eds.), pp. 271–292. Springer, New York, USA, 2012.
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Market Engineering for Electronic Healthcare Services.Dünnebeil, S.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In 45. Hawaii International Conference on System Sciences (HICSS). Hawaii, USA, 2012.
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On Socio-technical Enablers for Ubiquitous Computing Applications.Geihs, K.; Leimeister, J. M.; Roßnagel, A.; Schmidt, L. In 3rd Workshop on Enablers for Ubiquitous Computing and Smart Services: IEEE/IPSJ 12th International Symposium on Applications and the Internet (Izmir 2012), pp. 405–408. IEEE, Los Alamitos, 2012.
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The focus of this paper is on context-aware, selfadaptive ubiquitous computing applications that involve mobile users. The development of such applications is inherently complex for two main reasons: From a technical perspective, context management and adaptation management add complexity to the application design and implementation. From a socio-technical perspective, concerns and requirements related to the social embedding and user acceptance must be addressed in the application design and lead to additional complexity, particularly because sensitive personal data is collected, processed, stored and communicated by such applications. In this position paper we present an analysis of the problem space and a solution approach. We have developed an interdisciplinary methodology that systematically addresses technical as well as non-technical concerns. Our conclusion is that solving the socio-technical challenges will be a key enabler for ubiquitous computing.
Challenges in Tag Recommendations for Collaborative Tagging Systems.Jäschke, Robert; Hotho, Andreas; Mitzlaff, Folke; Stumme, Gerd. In Recommender Systems for the Social Web, Vol. 32, J. J. Pazos Arias, A. Fernández Vilas, R. P. Díaz Redondo (eds.), pp. 65–87. Springer, Berlin/Heidelberg, 2012.
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Originally introduced by social bookmarking systems, collaborative tagging, or social tagging, has been widely adopted by many web-based systems like wikis, e-commerce platforms, or social networks. Collaborative tagging systems allow users to annotate resources using freely chosen keywords, so called tags . Those tags help users in finding/retrieving resources, discovering new resources, and navigating through the system. The process of tagging resources is laborious. Therefore, most systems support their users by tag recommender components that recommend tags in a personalized way. The Discovery Challenges 2008 and 2009 of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKDD) tackled the problem of tag recommendations in collaborative tagging systems. Researchers were invited to test their methods in a competition on datasets from the social bookmark and publication sharing system BibSonomy. Moreover, the 2009 challenge included an online task where the recommender systems were integrated into BibSonomy and provided recommendations in real time. In this chapter we review, evaluate and summarize the submissions to the two Discovery Challenges and thus lay the groundwork for continuing research in this area.
A Pattern-Based Approach for Analysing Requirements in Socio-technical Systems Engineering.Hoffmann, A. In 20th IEEE International Requirements Engineering Conference Doctoral Symposium (RE 2012 DS). Chicago, Illinois, USA, 2012.
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Der symbolische Wert der Popmusik. Zur Genese und Struktur des popmusikalischen Feldes.Kropf, J. In Berliner Journal für Soziologie, 22(2), pp. 267–292. 2012.
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Anatomy of a Conference.Macek, Bjoern Elmar; Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd. In Proc. 23rd ACM Conference on Hypertext and Social Media, HT ’12. 2012.
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Datenschutzgerechte Gestaltung von kontextvorhersagenden Algorithmen.David, K.; Roßnagel, A.; Skistims, H.; Voigtmann, C. In Datenschutz und Datensicherheit (DuD), (1), pp. 31–36. 2012.
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Twenty software requirement pattern to specify recommender systems that users will trust.Hoffmann, A.; Söllner, M.; Hoffmann, H. In 20th European Conference on Information Systems (ECIS). Barcelona, Spanien, 2012.
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A requirements data model for product service systems.Berkovich, Marina; Leimeister, Jan Marco; Hoffmann, Axel; Krcmar, Helmut. In Requirements Engineering, 19(2), S. London (ed.), pp. 161–186. 2012.
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Towards a competency model for requirements analysts.Klendauer, Ruth; Berkovich, Marina; Gelvin, Richard; Leimeister, Jan Marco; Krcmar, Helmut. In Information Systems Journal (ISJ), 22(6), pp. 475–503. 2012.
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Proceedings of the Third International Workshop on Mining Ubiquitous and Social Environments (MUSE 2012). Atzmueller, Martin; Hotho, Andreas. Workshop Notes, Bristol, UK, 2012.
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IT-gestützter Ideenwettbewerb.Leimeister, J.M.; Bretschneider, U. In Fachlexikon Technologie- und Innovationsmanagement, R. Achatz, M. Braun, T. Sommerlatte (eds.), pp. 216–218. Symposium Verlag, Düsseldorf, Germany, 2012.
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Using the IDEAL Software Process Improvement Model for the Implementation of Automotive SPICE.Klendauer, Ruth; Hoffmann, Axel; Leimeister, Jan Marco; Berkovich, Marina; Krcmar, Helmut. In 5th International Workshop on Co-operative and Human Aspects of Software Engineering (CHASE), ICSE 2012 Workshop, pp. 66–72. Zurich, Switzerland, 2012.
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Towards Trust-Based Software Requirement Patterns.Hoffmann, A.; Söllner, M.; Hoffmann, H.; Leimeister, J. M. In Second International Workshop on Requirements Patterns (RePa’ 12). Chicago, Illinois, USA, 2012.
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Establishing Online Communities - Only trial & error?Hartmann, M.; Bretschneider, U.; Leimeister, J. M. In International Society for Professional Innovation Management (ISPIM). Barcelona, Spain, 2012.
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Patienten als Innovatoren – Eine modulare Erweiterung einer Patientencommunity zur Ideenschmiede.Hartmann, M.; Bretschneider, U.; Prinz, A.; Leimeister, J. M. In Informatik 2012 - Game IT: Der Einsatz von IT-basierten Spielen und Spielmechaniken im organisationalen Kontext. Braunschweig, Germany, 2012.
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Modeling and Mining Ubiquitous Social Media. Atzmueller, Martin; Chin, Alvin; Helic, Denis; Hotho, Andreas. In Vol. 7472 of Lecture Notes in Computer Science. Springer Verlag, Heidelberg, Germany, 2012.
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BPRules and the BPR-Framework: Comprehensive Support for Managing QoS in Web Service Compositions.Comes, Diana; Baraki, Harun; Reichle, Roland; Geihs, Kurt. In 12th IFIP International Conference on Distributed Applications and Interoperable Systems (DAIS). Springer, Stockholm, 2012.
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Dienstleistungsengineering und -management. Leimeister, Jan Marco. 1st ed. Springer Berlin Heidelberg, Berlin, Germany, 2012.
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Twenty software requirement patterns to specify recommender systems that users will trust.Hoffmann, A.; Söllner, M.; Hoffmann, H. In European Conference on Information Systems (ECIS). Barcelona, Spanien, 2012.
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Designing Socio-technical Applications for Ubiquitous Computing.Comes, Diana Elena; Evers, Christoph; Geihs, Kurt; Hoffmann, Axel; Kniewel, Romy; Leimeister, Jan Marco; Niemczyk, Stefan; Roßnagel, Alexander; Schmidt, Ludger; Schulz, Thomas; Söllner, Matthias; Witsch, Andreas. In Distributed Applications and Interoperable Systems, K. M. Göschka, S. Haridi (eds.), pp. 194–201. Springer Berlin Heidelberg, Berlin, Heidelberg, 2012.
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A major challenge for ubiquitous system design is creating applications that are legal-compatible and accepted by their intended users. Today's European data protection principles contradict the ideas of ubiquitous computing. Additionally, users have to deal with unconventional interaction concepts leading to a low amount of trust and acceptance in such systems. Current development approaches do not sufficiently cover these concerns, as they do not systematically incorporate expertise from the relevant disciplines. We present a novel development approach for ubiquitous systems that explicitly addresses these concerns. Our primary task was to manage the increased number of stakeholders and dependencies, respectively conflicts between requirements of the particular disciplines. The approach incorporates predefined artifacts and a defined workflow with responsibilities, as well as suggesting how to develop mutual understanding. We apply this multidisciplinary approach to develop the ubiquitous application Meet-U.
Towards Modeling Educational Objectives in Serious Games.Hirdes, E. M.; Thillainathan, N.; Leimeister, J. M. In Pedagogically-driven Serious Games 2012. Saarbrücken, Germany, 2012.
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Towards the Use of Software Requirement Patterns for Legal Requirements.Hoffmann, A.; Schulz, T.; Jpffmann, H.; Jandt, S.; Roßnagel, A.; Leimeister, Jan-Marco. pp. 50–63. 2012.
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Task- and User-Centered Design of a Human-Robot System for Gas Leak Detection: From Requirements Analysis to Prototypical Realization.Hegenberg, J.; Cramar, L.; Schmidt, L. In 10th International IFAC Symposium on Robot Control (Dubrovnik 2012), I. Petrovic, P. Korondi (eds.), pp. 793–798. IFAC, Dubrovnik, 2012.
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Lots of industrial plants are regularly inspected for irregularities such as gas leaks. This is done by plant personnel via visual, aural, olfactory, and gas detector based search. Mobile robots equipped with several sensors are an opportunity to free personnel from this monotone repetitive task. A task- and user-centered design approach was chosen to assure an efficient and effective human-robot interaction and to enhance the acceptance of the developed human-machine system. In the first step, current practices were surveyed and analyzed. Then, system requirements were derived and technically realized, to iteratively evaluate their usability. This article illustrates this design approach by exemplarily presenting requirements and their realization.
Teleoperationsunterstützung über ein HMD und ein kopfbewegungsgesteuertes Stereokamerasystem auf einem entfernten mobilen Roboter.Hegenberg, J.; Cramar, L.; Schmidt, L. In Datenbrillen: Aktueller Stand von Forschung und Umsetzung sowie zukünftiger Entwicklungsrichtungen (Dortmund 2011), B. für A. und Arbeitsmedizin (ed.), pp. 29–38. BAuA, Dortmund, 2012.
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Dieser Beitrag beschreibt anhand eines konkreten Anwendungsfalls aus dem Bereich der Robotik, wie die Fähigkeiten des Menschen bei der Gestaltung einer Head-Mounted-Display-basierten Mensch-Roboter-Schnittstelle technisch umgesetzt werden können. Den inhaltlichen Rahmen bildet das Forschungsprojekt RoboGasInspector, dessen Ziel es ist, ein innovatives Mensch-Maschine-System mit mobilen und mit Gasfernmesstechnik ausgestatteten Inspektionsrobotern zu entwickeln und zu evaluieren, welches die Detektion und Ortung von Gaslecks in räumlich ausgedehnten technischen Anlagen weitgehend autonom bewältigt. Nach aktuellem Stand von Forschung und Entwicklung kann ein technisches System insbesondere in dynamischen Umgebungen nicht absolut fehlerfrei und ausfallsicher realisiert werden. Aus Gründen der Akzeptanz und der Anlagensicherheit ist deshalb eine Überwachung der mobilen Roboter erforderlich, die sich teilautonom durch die Anlage bewegen. Das Systemkonzept sieht eine zentrale Leitwarte mit zwei Benutzungsschnittstellen vor. Die eine Schnittstelle dient der Planung, Überwachung und Dokumentation der autonomen Funktion des Systems und die andere der Teleoperation des Roboters durch einen menschlichen Operator. Die Teleoperation soll menschliche Fähigkeiten synergetisch in das weitgehend automatisierte System integrieren und wird eingesetzt, falls der Mensch in der Lage ist, bei der Bearbeitung einer Aufgabe bessere Ergebnisse zu erzielen. Zur Unterstützung der Teleoperation wird ein Assistenzsystem eingesetzt, das dem Operator die visuellen Informationen liefert, die er benötigt um bei der Steuerung des Roboters am entfernten Einsatzort sein Situationsbewusstsein aufrechtzuerhalten. Das Assistenzsystem besteht aus einem Head-Mounted Display zur Ausgabe augmentierter Videobilder, die von einem Stereokamerasystem auf dem Roboter aufgezeichnet werden. Die Gestaltung der Teleoperationsunterstützung zielt darauf ab, dem Nutzer das Gefühl zu vermitteln mit den eigenen Augen aus der Perspektive des Roboters zu sehen bzw. im Sinne einer Telepräsenz selber vor Ort zu sein. Dazu wird bei der technischen Umsetzung von den menschlichen Fähigkeiten ausgegangen. Analogien zwischen technischen Parametern und quantitativen Maßen menschlicher Fähigkeiten werden genutzt, in dem die Parameter den zugehörigen Maßen angenähert werden. Eine Auswahl dieser Analogien wird in diesem Beitrag wiedergegeben und die Nachempfindung der menschlichen Wahrnehmung und Motorik durch Gegenüberstellung quantitativer Wertpaare beurteilt.
Ergonomische Gestaltung einer kopfbewegungsbasierten Steuerung eines Stereokamerasystems auf einem entfernten mobilen Roboter.Hegenberg, J.; Röllke, A.; Cramar, L.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 249–252. GfA-Press, Dortmund, 2012.
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Inhalt dieses Beitrags ist die Gestaltung einer kopfbewegungsbasierten Steuerung für ein schwenk- und neigbares Kamerasystem. Es wird ein Überblick über die Anwendung und die technische Realisierung gegeben sowie die Ergebnisse einer ersten Evaluation vorgestellt, die den Vergleich mit konventionellen Eingabegeräten und die Anfälligkeit für das Auftreten der Simulatorkrankheit untersucht.
Öffentlichkeit vs. Verifizierbarkeit – Inwieweit erfüllt mathematische Verifizierbarkeit den Grundsatz der Öffentlichkeit der Wahl.Henning, Maria; Demirel, Denise; Volkamer, Melanie. In Transformation juristischer Sprache, Tagungsband des 15. Internationalen Rechtsinformatik Symposiums (IRIS), pp. 213–220. 2012.
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Datenschutzrechtliche Grenzen interner Ermittlungen.Heinson, D. In Handschuh, A./Ring, G.: "Sicher forschen und entwickeln", 1. Freiberger Sicherheitskonferenz. Nomos Verlagsgesellschaft, Baden-Baden, 2012.
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Transparentes eVoting - Elektronische Kandidatenauswahl und automatisierte Stimmermittlung am Beispiel hessischer Kommunalwahlen.Henning, M.; Volkamer, M.; Budurushi, J. In Die Öffentliche Verwaltung (DÖV), pp. 789 – 796. 2012.
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Wireless Visions: A Look to the Future by the Fellows of the WWRF.David, K.; Jefferies, N. In IEEE Vehicular Technology Magazine, 7(4), pp. 26–36. 2012.
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In less than two decades, mobile communication has developed from a niche application to a mass-market high-tech product, having experienced an unprecedented growth, never achieved by any other technology, whether radio, television, or even the Internet. Thirteen well-known experts, all of them honored as WWRF Fellows, have been interviewed and shared their expertise and opinions on ten questions about the wireless future, as presented here. The answers span a wide field from air interfaces, networks, devices, applications, to new ways of interaction, to name a few. Although the ideas and views presented here are not one common vision, they should provide stimulating ideas and questions for future research, and it will be exciting to see how things are really going to develop. The Fellows' ideas also clearly show the fascination, impact, and opportunities wireless communications has and will have in the future.
Towards the Use of Software Requirement Patterns for Legal Requirements. Hoffmann, A.; Schulz, T.; Hoffmann, H.; Jandt, S.; Roßnagel, A.; Leimeister, J. M. N. Seyff; N. Madhavji (eds.). 2nd International Requirements Engineering Efficiency Workshop (REEW) 2012 at REFSQ 2012, Essen, Germany, 2012.
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Diskussionsbericht zum Energieinformationsnetz, Datenschutz und Sicherheit.Hoss, D.; Pocs, M. In Nutzerschutz - Rechtsrahmen, Technikpotenziale, Wirtschaftskonzepte, A. Roßnagel (ed.), pp. 83–87. Nomos, 2012.
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Collaboration Engineering to Improve the Idea Quality in Ideas Communities.Kipp, P.; Bretschneider, U. In European Conference on Information Systems (ECIS). Barcelona, Spain, 2012.
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GDPdU-Konformität von Projektmanagementsoftware – Exemplarische Konzeption und Umsetzung.Klotz, Michael; Sulk, Ingolf; Wieck, Enrico. In FH Stralsund, SIMAT Stralsund Information Management Team (SIMAT), M. Klotz (ed.). Stralsund, Germany, 2012.
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Diskussionsbericht zum Nutzerschutz im „Smart Home“.Hoss, D.; Pocs, M.; Roßnagel, A. In Nutzerschutz - Rechtsrahmen, Technikpotenziale, A. Roßnagel (ed.), pp. 153–163. Nomos, 2012.
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Reducing the Complexity of Understanding Cryptology using CrypTool.Hick, Sibylle; Esslinger, Bernhard; Wacker, Arno. In The 10th International Conference on Education and Information Systems,Technologies and Applications (EISTA 2012). Orlando, Florida, USA, 2012.
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Designing Socio-Technical Applications for Ubiquitous Computing – Results from a Multidisciplinary Case Study,.Comes, D. E.; Evers, C.; Geihs, K.; Hoffmann, A.; Kniewel, R.; Leimeister, J. M.; Niemczyk, S.; Schmidt, L.; Schulz, T.; Söllner, M.; Witsch, A. In Distributed Applications and Interoperable Systems – 12th IFIP WG 6.1 International Conference Stockholm, of Distributed Applications and Interoperable Systems – 12th IFIP WG 6.1 International Conference Stockholm, K. M. Göschka, S. Haridi (eds.), pp. 194–201. Heidelberg, 2012.
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Iterative Gestaltung einer Computermaus als Beanspruchungsassistenzsystem.Kniewel, R.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 447–450. GfA-Press, Dortmund, 2012.
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Ein in den Computerarbeitsplatz integriertes Assistenzsystem, das auf Grundlage sensorischer Messungen physiologischer Parameter des Nutzers, wie beispielsweise der elektrodermalen Aktivität, funktioniert und zu seinem daraus abgeleiteten Beanspruchungszustand Feedback gibt, könnte für den aktiven Abbau von Disstress im Arbeitskontext sinnvoll sein. Dieser Beitrag beschreibt mit einer ïntelligenten" Computermaus eine Komponente dieses Arbeitsplatzes, die iterativ im Rapid-Prototyping-Verfahren entwickelt und evaluiert wurde. Darüber hinaus werden relevante Gestaltungsaspekte für die Weiterentwicklung der Komponente und des Gesamtsystems dargestellt.
Assistenzsysteme zur Aufrechterhaltung des Situationsbewusstseins bei der Überwachung autonomer mobiler Roboter.Cramar, L.; Hegenberg, J.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 269–272. GfA-Press, Dortmund, 2012.
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Eine wesentliche Voraussetzung für die Aufrechterhaltung des Situationsbewusstseins ist die korrekte Wahrnehmung und Interpretation der Umgebung mit ihren Elementen und Veränderungen. Die entscheidende Rolle spielen dabei die Umgebungsreize, die der Mensch unmittelbar aufnehmen kann. Im Fall einer Fernüberwachung, die über eine Benutzungsschnittstelle und damit indirekt erfolgt, kann die Wahrnehmung beispielsweise aufgrund des eingeschränkten Sichtfeldes, der Qualität übertragener Videodaten und der Tatsache, dass nur ein Teil menschlicher Modalitäten angesprochen wird, wesentlich beeinträchtigt werden. Durch eine gezielte Gestaltung der Benutzungsschnittstelle und die gezielte Entwicklung von Assistenzfunktionen zur Aufrechterhaltung des Situationsbewusstseins soll diesen Herausforderungen bei der Überwachung autonomer mobiler Roboter begegnet werden.
Partial Verifiability in POLYAS for the GI Elections.Maina Olembo, M.; Kahlert, Anna; Neumann, Stephan; Volkamer, Melanie. In International Conference on Electronic Voting 2012 (EVOTE2012), 5th, pp. 95–109. 2012.
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Face-to-Face Contacts at a Conference: Dynamics of Communities and Roles.Atzmueller, Martin; Doerfel, Stephan; Hotho, Andreas; Mitzlaff, Folke; Stumme, Gerd. In Modeling and Mining Ubiquitous Social Media, Vol. 7472. Springer Verlag, Heidelberg, Germany, 2012.
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VIKAMINE - Open-Source Subgroup Discovery, Pattern Mining, and Analytics.Atzmueller, Martin; Lemmerich, Florian. In Proc. ECML/PKDD 2012: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases. Springer Verlag, Heidelberg, Germany, 2012.
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Self-Stabilizing Micro Controller for Large-Scale Sensor Networks in Spite of Program Counter Corruptions due to Soft Errors.Boelmann, Christopher; Weis, Torben; Engel, Michael; Wacker, Arno. In 18th IEEE International Conference on Parallel and Distributed Systems (ICPADS 2012). Singapore, 2012.
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One Device Fits All? – Ein Endgerät für mehrere Arbeitgeber – Rechtliche Bewertung und Handlungsempfehlungen.Jandt, Silke; Steidle, Roland. In Computer und Recht (CR), BYID (ed.), pp. 338–344. 2012.
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Generic Pattern Trees for Exhaustive Exceptional Model Mining.Lemmerich, Florian; Becker, Martin; Atzmueller, Martin. In Proc. ECML/PKDD 2012: European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases. Springer Verlag, Heidelberg, Germany, 2012.
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Ambient Assisted Living - Ein Überblick zum Stand der Forschung.Malinka, J.; Widy, O.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 499–502. GfA-Press, Dortmund, 2012.
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Technikentwicklungen im Bereich Ambient Assisted Living (AAL) werden besonders durch Rahmenprogramme der EU und nationale Forschungsprogramme gefördert. In den letzten Jahren sind zahlreiche Forschungs- und Entwicklungsprojekte zu AAL- Anwendungen gestartet, deren Inhalte und Forschungsziele sich durchaus überschneiden. Dieser Beitrag gibt durch eine inhaltliche Kategorisierung einen Überblick der Themenzugehörigkeit derzeit laufender und abgeschlossener Projekte. Von den analysierten 73 EU- und 34 BMBF-geförderten Projekten wird außerdem die förderpolitische Schwerpunktsetzung anhand der Finanzierung der Themen betrachtet.
The Effects of Prediction Market Design and Price Elasticity on Trading Performance of Users: An Experimental Analysis.Blohm, Ivo; Riedl, Christoph; Füller, Johann; Köroglu, Orhan; Leimeister, Jan Marco; Krcmar, Helmut. In Proceedings Collective Intelligence 2012. Cambridge, MA, USA, 2012.
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Describing Locations using Tags and Images: Explorative Pattern Mining in Social Media.Lemmerich, Florian; Atzmueller, Martin. In Modeling and Mining Ubiquitous Social Media, Vol. 7472. Springer Verlag, Heidelberg, Germany, 2012.
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Ansatz zur experimentellen Ermittlung von Gesten zur Steuerung eines mobilen Roboters.Cramar, L.; Hegenberg, J.; Schmidt, L. In Useware 2012: Mensch-Maschine-Interaktion (Kaiserslautern 2012), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 173–183. VDI-Verlag, Düsseldorf, 2012.
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Vorwissen, das die Grundlage einer intuitiven Interaktion darstellt, kann verschiedene Quellen haben. Gesten, die zur Steuerung eines mobilen Roboters herangezogen werden können, können ihren Ursprung in Alltagserfahrungen haben, wie beispielsweise dem Wegweisen, und werden durch die relativ häufige Verwendung meistens unbewusst angewendet. Im Gegensatz dazu kann die Verwendung von erlernten Gesten, die nicht zum intuitiven Gestenvokabular gehören, eine potentielle Fehlerquelle darstellen. In einem Experiment mit zehn Versuchspersonen wurden im ersten Durchlauf intuitive Gesten ermittelt, um im zweiten Versuchsdurchlauf durch erlernte Gesten ersetzt zu werden. Die Durchführungszeit sowie die Anzahl der Kollisionen und der Abweichungen von den vorgegebenen Gesten wurden dabei ermittelt und dienten als Effizienz- und Zuverlässigkeitsindikatoren. Im Ergebnis wurden Empfehlungen für die Auswahl von Gesten zur Steuerung mobiler Roboter abgeleitet.
Von Anforderungslisten zum konzeptionellen Design – Funktionsbasierte Analyse von Anforderungen an Product-Service Systems.Gürtler, Matthias; Kortler, Sebastian; Helms, Bergen; Berkovich, Marina; Leimeister, Jan Marco; Krcmar, Helmut; Shea, Kristina; Lindemann, Udo; Maurer, und Maik. In Dienstleistungsmodellierung 2012, Vol. 1, O. Thomas, M. Nüttgens (eds.), pp. 75–96. 2012.
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Kleiner Helfer - Ein mobiles Assistenzsystem für die Campus-Erkundung durch Studierende.Kniewel, R.; Schmidt, L. In Gestaltung nachhaltiger Arbeitssysteme - Wege zur gesunden, effizienten und sicheren Arbeit: 58. Kongress der Gesellschaft für Arbeitswissenschaft (Kassel 2012), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 149–152. GfA-Press, Dortmund, 2012.
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Der "K}leine Helfer", ein mobiles Assistenzsystem zur Campuserkundung, soll Studienanfänger dabei unterstützen, studienrelevante Gebäude ausfindig zu machen und die von den universitären Einrichtungen jeweils angebotenen Dienstleistungen effektiv und effizient in Anspruch zu nehmen. Dieser Beitrag beschreibt die Erhebung von Benutzeranforderungen an die Gestaltung des Kleinen Helfers, für die eine State-of-the-Art-Analyse aktueller Campus-Applikationen und eine Fokusgruppe mit Studierenden der Universität Kassel durchgeführt wurden.
Introducing Open Innovation to Universities - How to Increase Universities Innovativeness.Kipp, P.; Zogaj, S.; Ebel, P.; Bretschneider, U.; Leimeister, J. M. In International Society for Professional Innovation Management (ISPIM). Barcelona, Spain, 2012.
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Proceedings MSM 2012: Workshop on Modeling Social Media -- Collective Intelligence in Social Media. Chin, Alvin; Atzmueller, Martin; Helic, Denis. ACM Press, New York, NY, USA, 2012.
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Anforderungen an Software Requirement Pattern in der Entwicklung sozio-technischer Systeme.Hoffmann, A.; Hoffmann, H.; Leimeister, J. M. In 42. Jahrestagung der Gesellschaft für Informatik e.V. (GI). Braunschweig, Germany, 2012.
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Technische Konvergenz im Hybrid-TV und divergenter Rechtsrahmen für Fernsehen und Internet.Boos, Carina. Vol. 13, F. Wirtschaftsrecht (ed.). university press, 2012.
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Socially Acceptable Design of a Ubiquitous System for Monitoring Elderly Family Members.Hoberg, S.; Schmidt, L.; Hoffmann, A.; Söllner, M.; Leimeister, J. M.; Voigtmann, C.; David, K.; Zirfas, J.; Roßnagel, A. In Informatik 2012 - Was bewegt uns in der/die Zukunft? 42. Jahrestagung der Gesellschaft für Informatik e. V. (Braunschweig 2012), of Lecture Notes in Informatics, U. Goltz, M. Magnor, H.-J. Appelrath, H. Mathies, W.-T. Balke, L. Wolf (eds.), pp. 349–363. Köllen, Bonn, 2012.
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Some functions in ambient assistance systems are enabled by sensors gathering data from the surroundings. While many prototypes are developed to prove technical concepts, for creating an acceptable, usable product additional facets need to be considered. Therefore, we present an approach to develop a functional ubiquitous system to support the monitoring and assistance of elderly family members. Besides the necessary technical concepts, insights from trust, law and user interface design are incorporated in this approach. The main idea of the approach is to deduce functional requirements from normative guidelines, theories or laws, and to combine the contributions from the involved disciplines developing the Senior Monitor demonstrator.
Designing Socio-Technical Applications for Ubiquitous Computing - Results from a Multidisciplinary Case Study.Comes, D.; Evers, C.; Geihs, K.; Hoffmann, A.; Kniewel, R.; Leimeister, J. M.; Niemczyk, S.; Roßnagel, A.; Schmidt, L.; Schulz, T.; Söllner, M.; Witsch, A. In Distributed Applications and Interoperable Systems (Stockholm 2012), of Lecture Notes in Computer Science, K. M. Göschka, S. Haridi (eds.), pp. 194–201. Springer, Berlin, 2012.
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A major challenge for ubiquitous system design is creating applications that are legal-compatible and accepted by their intended users. Today’s European data protection principles contradict the ideas of ubiquitous computing. Additionally, users have to deal with unconventional interaction concepts leading to a low amount of trust and acceptance in such systems. Current development approaches do not sufficiently cover these concerns, as they do not systematically incorporate expertise from the relevant disciplines. We present a novel development approach for ubiquitous systems that explicitly addresses these concerns. Our primary task was to manage the increased number of stakeholders and dependencies, respectively conflicts between requirements of the particular disciplines. The approach incorporates predefined artifacts and a defined workflow with responsibilities, as well as suggesting how to develop mutual understanding. We apply this multidisciplinary approach to develop the ubiquitous application Meet-U.
Designing Socio-Technical Applications for Ubiquitous Computing - Results from a Multidisciplinary Case Study.Comes, D.; Evers, C.; Geihs, K.; A., Hoffmann; Kniewel, R.; Leimeister, J. M.; Niemczyk, S.; Roßnagel, A.; Schmidt, L.; Schulz, T.; Söllner, M.; Witsch, A. In Distributed Applications and Interoperable Systems (Stockholm 2012), Vol. 7272 of Lecture Notes in Computer Science, K. M. Göschka, S. Haridi (eds.), pp. 194–201. Springer, Berlin, 2012.
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A major challenge for ubiquitous system design is creating applications that are legal-compatible and accepted by their intended users. Today’s European data protection principles contradict the ideas of ubiquitous computing. Additionally, users have to deal with unconventional interaction concepts leading to a low amount of trust and acceptance in such systems. Current development approaches do not sufficiently cover these concerns, as they do not systematically incorporate expertise from the relevant disciplines. We present a novel development approach for ubiquitous systems that explicitly addresses these concerns. Our primary task was to manage the increased number of stakeholders and dependencies, respectively conflicts between requirements of the particular disciplines. The approach incorporates predefined artifacts and a defined workflow with responsibilities, as well as suggesting how to develop mutual understanding. We apply this multidisciplinary approach to develop the ubiquitous application Meet-U.
Socially acceptable design of a ubiquitous system for monitoring elderly family member.Hoberg, S.; Schmidt, L.; Hoffmann, A.; Söllner, M.; Leimeister, Jan-Marco; Voigtmann, C.; David, K.; Roßnagel, Ak. Vol. 42. Jahrestagung, U. Goltz, M. Magnor, H.-J. Appelrath, H. K. Matties, W.-T. Balke, L. Wolf (eds.), pp. 349–364. 2012.
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Towards an Approach for Developing Socio-Technical Ubiquitous Computing Applications.Hoffmann, Axel; Söllner, Matthias; Fehr, Alexander; Hoffmann, Holger; Leimeister, Jan Marco. In Informatik 2011 - Informatik schafft Communities. Beiträge der 41. Jahrestagung der Gesellschaft für Informatik e.V. (GI), P-192(41), pp. 1–15. LNI, Berlin, Germany, 2012.
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The purpose of the paper is to make a step towards a development approach for ubiquitous computing application. Therefore, we answer the following research questions: first, what is ubiquitous computing; second, which challenges of ubiquitous system development poses the particular nature of ubiquitous computing; and third, how to overcome these challenges by combining development methods from different fields. Major challenges in ubiquitous application development are a) dissociation from known user-interfaces, b) end users’ difficulties imagining ubicomp possibilities in participatory design settings, c) easy ubicomp application evaluation exceeds possibilities of current prototyping approaches, d) supporting user acceptance for ubicomp technologies is hence limited and e) the impact on society e.g. when introducing concealed sensors for ubicomp systems. This paper elaborates the specific challenges, analyzes to what extend existing development methods can be used to overcome these challenges, and introduces the VENUS approach for developing ubiquitous computing applications including methods for deriving requirements from law to ensure legally and socially compatible technology design, and trust to increase user acceptance of the developed applications.
Managing IT in a Business Unit Divestiture.Leimeister, Jan Marco; Böhm, Markus; Yetton, Phillip. In MIS Quarterly Executive, 11(1), pp. 37–48. 2012.
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2011[ to top ]

Requirements Engineering für Product Service Systems - Eine State-of-the-Art-Analyse.Berkovich, M.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik, 53(6), pp. 357–370. 2011.
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Analysis of Requirements Engineering Techniques for IT enabled Product-Service-Systems.Berkovich, M.; Hoffmann, A.; Leimeister, J. M.; Krcmar, H. In Requirements Engineering for Systems, Services, and Systems of Systems (RESS). Trento, Italy, 2011.
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Towards an Artifact Model for Requirements to IT-enabled Product Service Systems.Berkovich, M.; Esch, S.; Mauro, C.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik Konferenz (WI) 2011, Vol. 10. Zürich, Schweiz, 2011.
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Marketplaces for health applications. Assessment of Requirements in Case of the German Public Health System.Dünnebeil, S.; Leimeister, J. M.; Krcmar, H. In 4. International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC) 2011. Rome, Italy, 2011.
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Möglichkeiten zur IT-gestützten Durchführung von Lead User Workshops.Ebel, P. In Wirtschaftsinformatik 2011 (Poster Präsentation); 16. - 18. Februar 2011. Zürich, Switzerland, 2011.
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Encrypted NFC emergency tags based on the German Telematics Infrastructure.Dünnebeil, Sebastian; Köbler, Felix; Koene, Philip; Leimeister, Jan Marco; Krcmar, Helmut. In Third International Workshop on Near Field Communication (NFC). Hagenberg, Austria, 2011.
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Home service engineering for sensor networks.Meis, Jochen; Wojciechowski, Manfred. In Handbook of research on ambient intelligence and smart environments: Trends and perspective, N.-Y. Chong, F. Mastrogiovanni (eds.), pp. 220–238. Information Science Publishing, Hershey, Pennsylvania, USA, 2011.
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Verbindung von Common Criteria-Schutzprofilen mit der Methode rechtlicher IT-Gestaltung KORA - Anwendungsbeispiel Wahlgeheimnis.Bräunlich, K.; Richter, P.; Grimm, R.; Roßnagel, A. In Datenschutz und Datensicherheit (DuD), 35, p. 129. 2011.
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Towards Cycle-Oriented Requirements Engineering.Berkovich, M.; Mauro, C.; Leimeister, J. M.; Weyde, F.; Krcmar, H. In Wirtschaftsinformatik Konferenz (WI) 2011, Vol. 10. Zürich, Schweiz, 2011.
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Enhancing Social Interactions at Conferences.Atzmueller, Martin; Benz, Dominik; Doerfel, Stephan; Hotho, Andreas; Jäschke, Robert; Macek, Bjoern Elmar; Mitzlaff, Folke; Scholz, Christoph; Stumme, Gerd. In it - Information Technology, 53(3), pp. 101–107. Oldenbourg Wissenschaftsverlag GmbH, 2011.
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Elektronisches Laborbuch: Beweiswerterhaltung und Langzeitarchivierung in der Forschung.Johannes, P.C.; Rieger, S.; Potthoff, J.; Madiesh, M. In Digitale Wissenschaft - Stand und Entwicklung digital vernetzter Forschung in Deutschland, Schomburg, Leggewie, Lobin, Puschmann (eds.), pp. 149–156. 2011.
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Collaborative development of performance indicators for IT applications.Bitzer, P.; Hirdes, E. M.; Hoffmann, A.; Leimeister, J. M. In 41. Jahrestagung der Gesellschaft für Informatik. Berlin, Germany, 2011.
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Adaptive Applications are Smart Applications.Comes, Diana; Evers, Christoph; Geihs, Kurt; Saur, Daniel; Witsch, Andreas; Zapf, Michael. In International Workshop on Smart Mobile Applications. San Francisco, 2011.
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Auskunftsrecht des Betroffenen aus § 34 Abs. 1 BDSG in der Praxis: wirksames Instrument oder zahnloser Tiger?Hoss, D. In Recht der Datenverarbeitung, pp. 6–11. 2011.
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Intimsphäre und Kernbereichsschutz - Ein unantastbarer Bereich privater Lebensgestaltung in der Rechtsprechung des Bundesverfassungsgerichts.Desoi, M.; Knierim, A. In Die Öffentliche Verwaltung (DÖV), pp. 398–405. 2011.
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Biometric Systems in Future Crime Prevention Scenarios – How to Reduce Identifiability of Personal Data.Desoi, M.; Pocs, M.; Stach, B.: "Biometric Systems in Future Crime Prevention Scenarios. In BIOSIG 2011: Proceedings - International Conference of the Biometrics Special Interste Group, A. Brömme, C. Busch (eds.), pp. 259–266. Bonn, 2011.
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Nachbarrecht im Wohnbereich.Hoss, D. In Wohnungs- und Immobilienlexikon, Zweite, , E. Mändle (ed.), p. 1187. Haufe-Lexware, 2011.
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Analysis of Communities in Social Media.Atzmueller, Martin. In Proc. 20th Intl. Conference on Information and Knowledge Management (CIKM 2011), pp. 35–36. ACM Press, Glasgow, Scotland, UK, 2011.
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Elektronisch signierende Endgeräte im Forschungsprozess.Johannes, P. C.; Rieger, S.; Potthoff, J.; Madiesh, M. In D-A-CH Security 2011 - Tagungsband, Schartner, Taeger (eds.), pp. 44–55. 2011.
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Enhancing Alignment Based Context Prediction by Using Multiple Context Sources: Experiment and Analysis.König, Immanuel; Voigtmann, Christian; Klein, Bernd Niklas; David, Klaus. In Proceedings of the 7th International and Interdisciplinary Conference on Modeling and Using Context, CONTEXT 2011, of CONTEXT’11, pp. 159–172. Springer-Verlag, Karlsruhe, Germany, 2011.
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Context aware applications are reactive, they adapt to an entity’s context when the context has changed. In order to become proactive and act before the context actually has changed future contexts have to be predicted. This will enable functionalities like preloading of content or detection of future conflicts. For example if an application can predict where a user is heading to it can also check for train delays on the user’s way. So far research concentrates on context prediction algorithms that only use a history of one context to predict the future context. In this paper we propose a novel multidimensional context prediction algorithm and we show that the use of multidimensional context histories increases the prediction accuracy. We compare two multidimensional prediction algorithms, one of which is a new approach; the other was not yet experimentally tested. In theory, simulation and a real world experiment we verify the feasibility of both algorithms and show that our new approach has at least equal or better reasoning accuracy.
Feasibility Analysis of Prêt à Voter for German Federal Elections.Demirel, D.; Henning, M.; Ryan, Y. A.; Schneider, S.; Volkamer, M. In E-Voting and Identity (Tagungsband). 2011.
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Towards CSR 2.0 - Potentials and Challenges of Web 2.0 for Corporate Social Responsibility Communication.Bittner, E. A. C.; Leimeister, J. M. In 11. European Academy of Management (EURAM) 2011 - Annual Meeting. Tallinn, Estonia, 2011.
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Enhancing alignment based context prediction by using multiple context sources: experiment and analysis.König, I.; Voigtmann, C.; Klein, N.; David, K. pp. 159–172. Springer LNAI6967 Proceedings, 2011.
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Beweissicherheit und Archivierung von Forschungsdaten in der MPG.Johannes, P.C.; Potthoff, J. In 27. DV-Treffen der Max-Planck-Institute, Vol. GWDG-Bericht Nr. 77, Oberreuter, Vollmar, Weiße (eds.), pp. 29–41. 2011.
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Empirically Grounded Design of a Nutrition Tracking System for Patients with Eating Disorders.Menschner, P.; Prinz, A.; Leimeister, J. M. In Near Field Communications Handbook, S. Ahson, M. Ilyas (eds.), pp. 305–324. Auerbach, Boca Raton,USA & London, UK, 2011.
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Gestaltung technisch-sozialer Vernetzung in der Arbeitsorganisation: Untersuchung zur Nutzerakzeptanz von RFID-Technologie.Behrenbruch, Kay; Atzmueller, Martin; Kniewel, Romy; Hoberg, Sebastian; Stumme, Gerd; Schmidt, Ludger. In GfA-Frühjahrskongress. Chemnitz, 2011.
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Beweissichere elektronische Labor-, Patienten- und Fallakten.Johannes, P. C.; Potthoff, J.; Madiesh, M. In perspeGKtive 2011 - Digital Proceedings. 2011.
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One Tag to Bind Them All : Measuring Term Abstractness in Social Metadata.Benz, Dominik; Körner, Christian; Hotho, Andreas; Stumme, Gerd; Strohmaier, Markus. In Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011), G. Antoniou, M. Grobelnik, E. Simperl, B. Parsia, D. Plexousakis, J. Pan, P. D. Leenheer (eds.). Heraklion, Crete, 2011.
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Recent research has demonstrated how the widespread adoption of collaborative tagging systems yields emergent semantics. In recent years, much has been learned about how to harvest the data produced by taggers for engineering light-weight ontologies. For example, existing measures of tag similarity and tag relatedness have proven crucial step stones for making latent semantic relations in tagging systems explicit. However, little progress has been made on other issues, such as understanding the different levels of tag generality (or tag abstractness), which is essential for, among others, identifying hierarchical relationships between concepts. In this paper we aim to address this gap. Starting from a review of linguistic definitions of word abstractness, we first use several large-scale ontologies and taxonomies as grounded measures of word generality, including Yago, Wordnet, DMOZ and Wikitaxonomy. Then, we introduce and apply several folksonomy-based methods to measure the level of generality of given tags. We evaluate these methods by comparing them with the grounded measures. Our results suggest that the generality of tags in social tagging systems can be approximated with simple measures. Our work has implications for a number of problems related to social tagging systems, including search, tag recommendation, and the acquisition of light-weight ontologies from tagging data.
A Dual View on IT Challenges in Corporate Divestments and Acquisitions.Böhm, M.; Henningsson, S.; Leimeister, J. M.; Yetton, P.; Krcmar, H. In International Conference on Information Systems (ICIS), pp. 1–19. Shanghai, China, 2011.
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Data Mining.Atzmueller, Martin. In Applied Natural Language Processing and Content Analysis: Advances in Identification, Investigation and Resolution., P. M. McCarthy, C. Boonthum (eds.). IGI Global, 2011.
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Corporate Divestitures: Towards Measuring the Success of IT Carve-Out Projects.Böhm, M.; Hansbauer, G.; Müller, S.; Leimeister, J. M.; Krcmar, H. In 11. European Academy of Management (EURAM)- Annual Meeting, pp. 1–35. Tallinn, Estonia, 2011.
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Benutzerfreundlichkeit von mobilen Applikationen zur Nutzung von virtuellen Netzgemeinschaften für die Generation 50+.Köbler, F.; Hoekrich, M.; Koene, P.; Menschner, P.; Prinz, A.; Leimeister, J. M.; Krcmar, H. In Mit AAL-Dienstleistungen altern. Nutzerbedarfsanalysen im Kontext des Ambient Assisted Living, D. Bieber, K. Schwarz (eds.), pp. 97–114. iso-Institut, Saarbrücken, Germany, 2011.
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Using NFriendConnector to Extend Facebook to the Real World.Köbler, F.; Goswami, S.; Koene, P.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik Konferenz (WI) 2011, Vol. 10. Zürich, Schweiz, 2011.
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Scenario planning for innovation development: an overview of different innovation domains.Böhm, F.; Fähling, J.; Huber, M.; Leimeister, J. M.; Krcmar, H. In R&D Management Conference, p. 27. Norrköping, Sweden, 2011.
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Privacy-aware spam detection in social bookmarking systems.Bullock, Beate Navarro; Lerch, Hana; Rossnagel, Alexander; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 11th International Conference on Knowledge Management and Knowledge Technologies, of i-KNOW ’11, pp. 15:1–15:8. ACM, Graz, Austria, 2011.
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With the increased popularity of Web 2.0 services in the last years data privacy has become a major concern for users. The more personal data users reveal, the more difficult it becomes to control its disclosure in the web. However, for Web 2.0 service providers, the data provided by users is a valuable source for offering effective, personalised data mining services. One major application is the detection of spam in social bookmarking systems: in order to prevent a decrease of content quality, providers need to distinguish spammers and exclude them from the system. They thereby experience a conflict of interests: on the one hand, they need to identify spammers based on the information they collect about users, on the other hand, they need to respect privacy concerns and process as few personal data as possible. It would therefore be of tremendous help for system developers and users to know which personal data are needed for spam detection and which can be ignored. In this paper we address these questions by presenting a data privacy aware feature engineering approach. It consists of the design of features for spam classification which are evaluated according to both, performance and privacy conditions. Experiments using data from the social bookmarking system BibSonomy show that both conditions must not exclude each other.
Personalmanagement in der Wohnungs- und Immobilienwirtschaft.Hoss, D. In Wohnungs- und Immobilienlexikon, E. Mändle (ed.), pp. 1268–1270. Haufe-Lexware, 2011.
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The next step – open prototyping.Bullinger, A. C.; Hoffmann, H.; Leimeister, J. M. In European Conference on Information Systems (ECIS). Helsinki, Finland, 2011.
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Reaching into patients‘ homes - participatory designed AAL services.Menschner, P.; Prinz, A.; Koene, P.; Köbler, F.; Altmann, M.; Krcmar, H.; Leimeister, J. M. In Electronic Markets, 21(1), pp. 63–76. 2011.
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Engineering Knowledge-Intense, Person-Oriented Services – A State of the Art Analysis.Menschner, P.; Peters, C.; Leimeister, J. M. In European Conference on Information Systems (ECIS). Helsinki, Finland, 2011.
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Kollaborative Kennzahlenentwicklung für den IT-Wertbeitrag.Bitzer, P.; Leimeister, J. M. In Erfolgsfaktor IT-Management – So steigern Sie den Wertbeitrag Ihrer IT, M. Lang, M. Amberg (eds.). Symposium, Düsseldorf, Germany, 2011.
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Nutzung von Prozessreferenzmodellen zur Produktivitätsmessung und -steigerung von Dienstleistungen.Drees, A.; Langkau, T.; Leppert, F.; Peters, C.; Soltani, N.; Gök, M.; Menschner, P.; Greiner, W.; Kolbe, L.; Leimeister, J. M.; Möller, K.; Rienhoff, O. In Controlling - Zeitschrift für erfolgsorientierte Unternehmenssteuerung, Vol. 23, pp. 516–522. 2011.
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Scientific Data Lifecycle - Beweiswerterhaltung und Technologien.Johannes, P. C.; Hackel, S.; Rieger, S.; Potthoff, J.; Madiesh, M. In Sicher in die digitale Welt von morgen, B. für Sicherheit in der Informationstechnik (BSI) (ed.), pp. 403–418. SecuMedia, 2011.
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Social Link APP - A New Communication Paradigm Empowering Mobile Users.David, K.; Lau, Sian Lun; Klein, Niklas. In IEEE Vehicular Technology Magazine, 6(3), pp. 80–87. 2011.
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In less than two decades, mobile communication has developed from a niche application to a mass-market high-tech product, having experienced an unprecedented growth never achieved by any other technology, whether radio, television, or even the Internet [1]. The technologies that have revolutionized communication started with the classical fixed telecommunication networks. On these networks, we have real-time communication using different media such as classical telephony using voice. Apart from the classical fixed telecommunication net works, another major area of growth has, of course, been the Internet. In its wake, services such as voice communication "enhanced" by video (e.g., Video Skype and Apple Facetime) have followed. Also, instant messaging is a form of real-time communications using text messages. Then we have asynchronous communications with two success stories: short message service (SMS) and e-mail.
Modelle für Technologieakzeptanz und Vertrauen: Integration für eine sozialverträgliche Gestaltung ubiquitärer Systeme.Behrenbruch, K.; Schmidt, L. In Reflexionen und Visionen der Mensch-Maschine-Interaktion - Aus der Vergangenheit lernen, Zukunft gestalten: 9. Berliner Werkstatt Mensch-Maschine-Systeme (Berlin 2011), of Fortschrittberichte VDI, Reihe 22, Mensch-Maschine-Systeme, S. Schmid, M. Elepfandt, J. Adenauer, A. Lichtenstein (eds.), pp. 603–608. VDI-Verlag, Düsseldorf, 2011.
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In diesem Beitrag wird der Modellentwurf TAVUA vorgestellt, der es ermöglicht, die Forschungsergebnisse aus den Bereichen Technologieakzeptanz und Vertrauen bezogen auf die Nutzung ubiquitärer Anwendungen zusammenzuführen. Für diesen Zweck wird die verbindende Kausalstruktur von disziplinübergreifend genutzten Modellen für Verhalten (Theory of Reasoned Action) und die Nutzung von Informationstechnologie (Technology Acceptance Model) erläutert und auf den Modellentwurf übertragen. Es wird ein verbindender vierstufiger Aufbau identifiziert, der einen Kausalzusammenhang zwischen Meinungen, Einstellungen, der Verhaltensabsicht und dem tatsächlichen Verhalten herstellt. Der Modellentwurf verortet Technologieakzeptanz und Vertrauen in dieser Kausalstruktur. Zudem wird die Bedeutung von Vertrauen für die Akzeptanz von ubiquitären Anwendungen betont: Die Nutzung verlangt die Bereitschaft dem System Daten und Entscheidungen zu überlassen, sich also verletzlich zu machen und in einer unsicheren Situation Vertrauen aufzubringen. Die Ergebnisse einer Befra-gung zur Akzeptanz einer RFID-basierten und ubiquitären Anwendung zur Unterstützung der Zusammenarbeit in Forschungsgruppen konkretisieren die Voraussetzung für Vertrauen in ubi-quitäre Anwendungen.
A Context-Based Description of the Doubly Founded Concept Lattices in the Variety Generated by M_3.Doerfel, Stephan. In Formal Concept Analysis, Vol. 6628 of Lecture Notes in Computer Science, P. Valtchev, R. Jäschke (eds.), pp. 93–106. Springer, Berlin / Heidelberg, 2011.
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In universal algebra and in lattice theory the notion of varieties is very prominent, since varieties describe the classes of all algebras (or of all lattices) modeling a given set of equations. While a comprehensive translation of that notion to a similar notion of varieties of complete lattices – and thus to Formal Concept Analysis – has not yet been accomplished, some characterizations of the doubly founded complete lattices of some special varieties (e.g. the variety of modular or that of distributive lattices) have been discovered. In this paper we use the well-known arrow relations to give a characterization of the formal contexts of doubly founded concept lattices in the variety that is generated by M 3 – the smallest modular, non-distributive lattice variety.
Accelerating Customer Integration into Innovation Processes using Pico Jobs.Fähling, J.; Blohm, I.; Leimeister, J. M.; Krcmar, H.; Fischer, J. In International Journal of Technology Marketing, 6th ed., pp. 130–147. 2011.
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Identifying a set of relevant input and output factors within a productivity model for educational services.Bitzer, Philipp; Bittner, Eva; Leimeister, Jan Marco. In International RESER Conference (RESER). Hamburg, Germany, 2011.
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Krankenhausinformationssysteme im Gesundheitskonzern.Jandt, S.; Roßnagel, A.; Wilke, D. In Recht der Datenverarbeitung (RDV), (5), p. 222. 2011.
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Das Design ubiquitärer Systeme am Beispiel von MyGroup.Kniewel, R.; Schmidt, L. In Schmid, S.; Elepfandt, M.; Adenauer, J.; Lichtenstein, A. (Hrsg.): Reflexionen und Visionen der Mensch-Maschine-Interaktion – Aus der Vergangenheit lernen, Zukunft gestalten : 9, Vol. Berliner Werkstatt Mensch-Maschine-Systeme (Berlin 2011), pp. 609–614. VDI-Verlag, Düsseldorf, 2011.
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Modeling Location-Based Profiles of Social Image Media using Explorative Pattern Mining.Lemmerich, Florian; Atzmueller, Martin. In Proc. IEEE Third International Conference on Social Computing (SocialCom), pp. 1356–1363. IEEE Computer Society, Boston, MA, USA, 2011.
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Gemeinschaftsgestützte Innovationsentwicklung für Softwareunternehmen.Leimeister, J. M.; Krcmar, H.; Koch, M.; Möslein, K. In Schriften zu Kooperations- und Mediensystemen, Vol. 31, J. M. Leimeister, H. Krcmar, M. Koch, K. Möslein (eds.), pp. 1–452. EUL Verlag, ISBN: 978-3844100921, Lohmar, Germany, 2011.
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VIKAMINE - A Rich-Client Environment for Intelligent Pattern Mining and Subgroup Discovery.Atzmueller, Martin; Lemmerich, Florian. In Proceedings of the LWA 2011 - Learning, Knowledge, Adaptation. 2011.
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Applied Descriptive Pattern Mining.Atzmueller, Martin; Lemmerich, Florian. L. 2011 (ed.). 2011.
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Efficient Descriptive Community Mining.Atzmueller, Martin; Mitzlaff, Folke. In Proc. 24th Intl. FLAIRS Conference. AAAI Press, 2011.
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SODA@Med – Ein Framework zur serviceorientierten Integration medizinischer Geräte in Krankenhausinformationssysteme.Mauro, C.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik Konferenz (WI) 2011, Vol. 10. Zürich, Schweiz, 2011.
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Outsourcing der Verarbeitung von Patientendaten - Fragen des Daten- und Geheimnisschutzes.Jandt, S.; Roßnagel, A.; Wilke, D. In Neue Zeitschrift für Sozialrecht (NZS), pp. 641–646. 2011.
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The Nature of Medical Device Services. A Multiple-case Study.Mauro, C.; Leimeister, J. M.; Krcmar, H. In International Conference on Biomedical Electronics and Devices (BIODEVICES) 2011, pp. 250–255. Rome, Italy, 2011.
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Serviceorientierte Integration medizinischer Geräte - ganzheitliche IT-Unterstützung klinischer Prozesse.Mauro, C.; Leimeister, J. M.; Krcmar, H. In Informatik-Spektrum, 34(3), pp. 276–285. 2011.
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Vorhang auf für ein Vorratsdatenurteil 2.0?Knierim, A. In Die Welt im Netz. Folgen für Wirtschaft und Gesellschaft, J. Taeger (ed.), pp. 431–447. 2011.
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Idea Evaluation Mechanisms for Collective Intelligence in Open Innovation Communities: Do Traders outperform Raters?Blohm, I.; Riedl, C.; Leimeister, J. M.; Krcmar, H. In International Conference on Information Systems (ICIS). Shanghai, China, 2011.
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Medizintechnik goes SOA.Mauro, C.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik und Management, (2), pp. 24–29. 2011.
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Controlling von Ideencommunities – Entwicklung und Test einer Ideencommunity-Scorecard.Blohm, I.; Leimeister, J. M.; Rieger, M.; Krcmar, H. In Controlling, 23(2), pp. 96–103. 2011.
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Privatsphären- und Datenschutz in Community-Plattformen – Gestaltung von Online-Bewertungsportalen.Kartal, A.; Doerfel, S.; Roßnagel, A.; Stumme, G. In Informatik 2011 - Informatik schafft Communities, H. Heiß, P. Pepper, H. Schlingloff, J. Schneider (eds.), p. 412. 2011.
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Towards automotive service engineering: a design framework and a process model for developing mobile services in automobiles.Hoffmann, Holger; Leimeister, Jan Marco. In International Journal of Electronic Business (IJEB), 9(4), pp. 320–349. 2011.
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Towards Mining Semantic Maturity in Social Bookmarking Systems.Atzmüller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 4th international workshop on Social Data on the Web (SDoW2011), A. Passant, S. Fernández, J. Breslin, U. Bojārs (eds.). 2011.
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Towards Mining Semantic Maturity in Social Bookmarking Systems.Atzmueller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 4th International Workshop on Social Data on the Web (SDoW2011), A. Passant, S. Fernández, J. Breslin, U. Bojārs (eds.). 2011.
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Rechtskonformes Direktmarketing.Jandt, S.; Roßnagel, A. In Multimedia und Recht (MMR), pp. 86–91. 2011.
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Qualitätssicherung im Krankenhaus - Fragen des Daten- und Geheimnisschutzes.Jandt, S.; Roßnagel, A. In Medizinrecht (MedR), pp. 140–145. 2011.
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Evaluating Application Prototypes in the Automobile.Hoffmann, H.; Leimeister, J. M. In IEEE Pervasive Computing, 10(3), pp. 43–51. 2011.
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Technikgestaltung bei Vorratsdatenspeicherung & Quick Freeze.Knierim, A. In Tagungsband D-A-CH Security 2011, P. Horster (ed.), pp. 480–490. 2011.
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Development Support for QoS-Aware Service-Adaptation in Ubiquitous Computing Applications.Geihs, Kurt; Evers, Christoph; Reichle, Roland; Wagner, Michael; Khan, Mohammad Ullah. In Proceedings of the ACM Symposium on Applied Computing (SAC). 2011.
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Student sucht Dienstleistung, Dienstleistung sucht Student: Erstellung individualisierter Dienstleistungsangebote in Studierendenportalen.Hoffmann, A.; Peters, C.; Leimeister, J. M. In Informatik 2011 - Informatik schafft Communities. Beiträge der 41. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Vol. P-192, H. Heiß, P. Pepper, H. Schlingloff, J. Schneider (eds.), pp. 1–12. LNI, Berlin, Germany, 2011.
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Evaluation of the Influence of Time Synchronisation on Classification Learning Based Movement Detection with Accelerometers.Klein, Bernd Niklas; Lau, Sian Lun; David, Klaus. In 2011 IEEE/IPSJ 11th International Symposium on Applications and the Internet (SAINT), pp. 56–64. IEEE, Munich, Bavaria, Germany, 2011.
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Context awareness is an important enabler of future applications in ubiquitous environments and has the potential to free the user from the control loop in a situation where he faces ever more connected devices. The context of a user can be accessed using data gathered from the user's personal devices and devices in his proximity. In this paper we examine the relation between time synchronisation of devices and context reasoning accuracy. For an application where we detect different activities of an office worker from acceleration data measured at the wrists, we show that insufficient time synchronisation leads to a significant decrease of reasoning accuracy. We show this for six commonly used classification learning algorithms that otherwise offer high accuracy provided devices are time synchronised. We also analyse the reasons that causes a lack of time synchronisation and why known synchronisation protocols are not applicable in ubiquitous environments. To solve the problems imposed by insufficient time synchronisation we propose a conceptual change in the communication paradigm used in architectures for context awareness.
Face-to-Face Contacts during LWA 2010 - Communities, Roles, and Key Players.Atzmueller, Martin; Doerfel, Stephan; Hotho, Andreas; Mitzlaff, Folke; Stumme, Gerd. In Working Notes of the LWA 2011 - Learning, Knowledge, Adaptation. 2011.
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Face-to-Face Contacts during a Conference: Communities, Roles, and Key Players.Atzmueller, Martin; Doerfel, Stephan; Hotho, Andreas; Mitzlaff, Folke; Stumme, Gerd. In Proc. Workshop on Mining Ubiquitous and Social Environments (MUSE 2011) at ECML/PKDD 2011. 2011.
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Privacy preserving challenges: New Design Aspects for Latent Fingerprint Detection Systems with contact-less Sensors for Future Preventive Applications in Airport Luggage Handling.Hildebrandt, M.; Pocs, M.; Dittmann, J.; Ulrich, M.; Merkel, R.; Fries, T. In Proceedings of BioID 2011, Vol. 6583, pp. 286–298. Springer, 2011.
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Integration rechtlicher Anforderungen an soziotechnische Systeme in frühe Phasen der Systementwicklung.Hoffmann, A.; Hofmann, H.; Jandt, S.; Leimeister, J. M. In 6. Konferenz Mobile und ubiquitäre Informationssysteme (MMS), pp. 72–76. 2011.
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Integration rechtlicher Anforderungen an soziotechnische Systeme in frühe Phasen der Systementwicklung.Hoffmann, A.; Jandt, S.; Hoffmann, H.; Leimeister, J. M. In 6. Konferenz Mobile und ubiquitäre Informationssysteme (MMS) 2011, H. Höpfner, G. Specht, T. Ritz, C. Bunse (eds.). Kaiserslautern, Germany, 2011.
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"Weitere Vorsorge" im Atomrecht? Zur Verfassungswidrigkeit des § 7d AtG.Hentschel, A.; Roßnagel, A. In Zeitschrift für Neues Energierecht (ZNER), pp. 7–12. 2011.
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Ist das Gesetz zur Laufzeitverlängerung von Kernkraftwerken zustimmungsbedürftig?Hentschel, A.; Roßnagel, A. In Umwelt- und Planungsrecht (UPR), U. und Planungsrecht (ed.), pp. 1–7. 2011.
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Fachwissen nutzen – Kombination von Anforderungen verschiedener Disziplinen bei der Entwicklung ubiquitärer Anwendungen.Hoffmann, A.; Leimeister, J. M. In Reflexionen und Visionen der Mensch-Maschine Interaktion - Aus der Vergangenheit lernen, Zukunft gestalten. 9. Berliner Werkstatt Mensch-Maschine-Systeme (BWMMS), Vol. Fortschr.-Ber. VDI Reihe 22, Nr. 33, S. Schmid, M. Elepfandt, J. Adenauer, A. Lichtenstein (eds.). VDI Verlag, Düsseldorf, Germany, 2011.
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Improving Corporate Portal Design by using Service-Oriented Requirements Engineering and Service Bundling.Hoffmann, A.; Peters, C.; Leimeister, J. M. In Requirements Engineering for Systems, Services, and Systems of Systems (RESS) 2011. Trento, Italy, 2011.
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Kumulation von Datensammlungen auf Vorrat.Knierim, A. In Zeitschrift für Datenschutz (ZD), (1), pp. 17–23. 2011.
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Virtuelle Spurensuche - Digitale Forensik in Cloud-Umgebungen.Heinson, D.; Dirk, D.; Wegener, C. In Datenschutz und Datensicherheit (DuD), 35(5), pp. 329–332. 2011.
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Teleoperationsunterstützung über ein HMD und ein kopfbewegungsgesteuertes Stereokamerasystem auf einem entfernten mobilen Roboter.Hegenberg, J.; Schmidt, L. Dortmund, 2011.
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Dieser Beitrag beschreibt anhand eines konkreten Anwendungsfalls aus dem Bereich der Robotik, wie die Fähigkeiten des Menschen bei der Gestaltung einer Head-Mounted-Display-basierten Mensch-Roboter-Schnittstelle technisch umgesetzt werden können. Den inhaltlichen Rahmen bildet das Forschungsprojekt RoboGasInspector, dessen Ziel es ist, ein innovatives Mensch-Maschine-System mit mobilen und mit Gasfernmesstechnik ausgestatteten Inspektionsrobotern zu entwickeln und zu evaluieren, welches die Detektion und Ortung von Gaslecks in räumlich ausgedehnten technischen Anlagen weitgehend autonom bewältigt. Nach aktuellem Stand von Forschung und Entwicklung kann ein technisches System insbesondere in dynamischen Umgebungen nicht absolut fehlerfrei und ausfallsicher realisiert werden. Aus Gründen der Akzeptanz und der Anlagensicherheit ist deshalb eine Überwachung der mobilen Roboter erforderlich, die sich teilautonom durch die Anlage bewegen. Das Systemkonzept sieht eine zentrale Leitwarte mit zwei Benutzungsschnittstellen vor. Die eine Schnittstelle dient der Planung, Überwachung und Dokumentation der autonomen Funktion des Systems und die andere der Teleoperation des Roboters durch einen menschlichen Operator. Die Teleoperation soll menschliche Fähigkeiten synergetisch in das weitgehend automatisierte System integrieren und wird eingesetzt, falls der Mensch in der Lage ist, bei der Bearbeitung einer Aufgabe bessere Ergebnisse zu erzielen. Zur Unterstützung der Teleoperation wird ein Assistenzsystem eingesetzt, das dem Operator die visuellen Informationen liefert, die er benötigt um bei der Steuerung des Roboters am entfernten Einsatzort sein Situationsbewusstsein aufrechtzuerhalten. Das Assistenzsystem besteht aus einem Head-Mounted Display zur Ausgabe augmentierter Videobilder, die von einem Stereokamerasystem auf dem Roboter aufgezeichnet werden. Die Gestaltung der Teleoperationsunterstützung zielt darauf ab, dem Nutzer das Gefühl zu vermitteln mit den eigenen Augen aus der Perspektive des Roboters zu sehen bzw. im Sinne einer Telepräsenz selber vor Ort zu sein. Dazu wird bei der technischen Umsetzung von den menschlichen Fähigkeiten ausgegangen. Analogien zwischen technischen Parametern und quantitativen Maßen menschlicher Fähigkeiten werden genutzt, in dem die Parameter den zugehörigen Maßen angenähert werden. Eine Auswahl dieser Analogien wird in diesem Beitrag wiedergegeben und die Nachempfindung der menschlichen Wahrnehmung und Motorik durch Gegenüberstellung quantitativer Wertpaare beurteilt.
Towards an Approach for Developing socio-technical Ubiquitous Computing Applications.Hoffmann, A.; Söllner, M.; Fehr, A.; Hoffmann, H.; Leimeister, J. M. In Informatik 2011 - Informatik schafft Communities. Beiträge der 41. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Vol. P-192, H. Heiß, P. Pepper, H. Schlingloff, J. Schneider (eds.), pp. 1–15. LNI, Berlin, Germany, 2011.
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Web 2.0 im Gesundheitswesen – Ein Literature Review zur Aufarbeitung aktueller Forschungsergebnisse zu Health 2.0 Anwendungen.Hartmann, M.; Prinz, A.; Hirdes, E.; Görlitz, R.; Rashid, A.; Weinhardt, C.; Leimeister, J. M. In Wirtschaftsinformatik Konferenz (WI), Vol. 10. Zürich, Schweiz, 2011.
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Community Assessment using Evidence Networks.Mitzlaff, Folke; Atzmueller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In Analysis of Social Media and Ubiquitous Data, Vol. 6904 of LNAI. 2011.
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Proceedings of the 2011 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2011). Atzmueller, Martin; Hotho, Andreas. ECML/PKDD 2011, Athens, Greece, 2011.
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Analysis of Social Media and Ubiquitous Data - International Workshops MSM 2010, Toronto, Canada, June 13, 2010, and MUSE 2010, Barcelona, Spain, September 20, 2010, Revised Selected Papers. Atzmueller, Martin; Hotho, Andreas; Strohmaier, Markus; Chin, Alvin. In Vol. 6904 of Lecture Notes in Computer Science. Springer, 2011.
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Design, User Experience, and Usability. Theory, Methods, Tools and Practice - First International Conference, DUXU 2011, Held as Part of HCI International 2011, Orlando, FL, USA, July 9-14, 2011, Proceedings, 2 Part II. Marcus, A. In Vol. 6770 of Lecture Notes in Computer Science. Springer, Berlin, 2011.
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The two-volume set LNCS 6769 + LNCS 6770 constitutes the proceedings of the First International Conference on Design, User Experience, and Usability, DUXU 2011, held in Orlando, FL, USA in July 2011 in the framework of the 14th International Conference on Human-Computer Interaction, HCII 2011, incorporating 12 thematically similar conferences. A total of 4039 contributions was submitted to HCII 2011, of which 1318 papers were accepted for publication. The total of 154 contributions included in the DUXU proceedings were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on DUXU theory, methods and tools; DUXU guidelines and standards; novel DUXU: devices and their user interfaces; DUXU in industry; DUXU in the mobile and vehicle context; DXU in Web environment; DUXU and ubiquitous interaction/appearance; DUXU in the development and usage lifecycle; DUXU evaluation; and DUXU beyond usability: culture, branding, and emotions.
E-Learning-Technologie.Leimeister, J. M.; Winand, U.; Wegener, R. In Enzyklopädie der Wirtschaftsinformatik – Online-Lexikon, Vol. 5, K. Kurbel, J. Becker, N. Gronau, E. Sinz, L. Suhl (eds.). 2011.
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Touch’n’Document - A Nutrition Management System on an NFC-tagged TFT-display.Koene, Philip; Köbler, Felix; Leimeister, Jan Marco; Krcmar, Helmut. In 4th International Joint Conference on Biomedical Engineering Systems and Technologies, V. Traver, A. L. N. Fred, J. Filipe, H. Gamboa (eds.). Rome, Italy, 2011.
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Datenschutz für Smart Meter – Spezifische Neuregelungen im EnWG.Jandt, S.; Roßnagel, A.; Volland, B. In Zeitschrift für Datenschutz (ZD), pp. 99–104. 2011.
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Absorptive Capacity for Open Innovation Communities - Learnings from Theory and Practice.Blohm, I.; Köroglu, O.; Leimeister, J. M.; Krcmar, H. In 2011 Academy of Management Annual Meeting. San Antonio, Texas, USA, 2011.
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Playing MUSIC — building context-aware and self-adaptive mobile applications.Floch, J.; Frà, C.; Fricke, R.; Geihs, K.; Wagner, M.; Lorenzo, J.; Soladana, E.; Mehlhase, S.; Paspallis, N.; Rahnama, H.; Ruiz, P.A.; Scholz, U. In Software: Practice and Experience. Wiley, 2011.
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Performance property prediction supporting variability for adaptive mobile systems.Brataas, Gunnar; Jiang, Shanshan; Reichle, Roland; Geihs, Kurt. In Proceedings of the 15th International Software Product Line Conference, Volume 2, I. Schaefer, I. John, K. Schmid (eds.), p. 37. ACM, 2011.
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Datenschutz in Social Networks - Kollektive Verantwortlichkeit für die Datenverarbeitung.Jandt, S.; Roßnagel, A. In Zeitschrift für Datenschutz (ZD), pp. 160–166. 2011.
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Fernmeldegeheimnis im Arbeitsverhältnis bei erlaubter E-Mail-Nutzung zu privaten Zwecken – Anmerkung zum Urteil des LAG Berlin-Brandenburg vom 16.2.2011.Jandt, S. In Kommunikation und Recht (K&R), (10), pp. 631–632. 2011.
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Produktverantwortung, Modularisierung und Stoffstrominnovationen. Beckenbach, F.; Freimann, J.; Roßnagel, A.; Walther, M. In Vol. 2 of Interdisziplinäre Stoffstromforschung. Metropolis, Marburg, 2011.
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IT zur Unterstützung der Kundenintegration in den Innovationsprozess.Bretschneider, U.; Blohm, I.; Fähling, J.; Huber, J. M.; Riedl, C.; Leimeister, J. M.; Krcmar, H. In Information Management und Consulting, 26, pp. 52–57. 2011.
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7. Workshop on Information Systems and Services Sciences.Krcmar, H.; Goswami, S.; Leimeister, J. M.; Schermann, M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2011.
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"Smart Cameras" und automatische Verhaltensanalyse.Hornung, G.; Desoi, M. In Kommunikation und Recht (K&R), pp. 153–158. 2011.
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Getting customers’ motives: Lean on motivation theory for designing virtual ideas communities.Bretschneider, U.; Leimeister, J. M. In IFIP Working Group 8.6. Hamburg, Germany, 2011.
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Ideen-Community.Bretschneider, U.; Leimeister, J. M. In Fachlexikon Technologie- und Innovationsmanagement, T. Sommerlatte, R. Achatz, M. Braun (eds.). 2011.
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Pedestrian Movement Recognition for Radio Based Collision Avoidance: A Performance Analysis.Flach, Alexander; Memon, Abdul Qudoos; Lau, Sian Lun; David, Klaus. In 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), pp. 1–5. IEEE, Budapest, Hungary, 2011.
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In today's increasingly mobile society, car manufacturers and suppliers worldwide face the imperative requirement and have already been working to reduce the number of people killed in traffic accidents. In this context pedestrian protection respectively collision avoidance between cars and pedestrians is of vital importance. Several approaches exist to detect pedestrians but only a few of them are able to work without line of sight and/ or only have a very brief view of the movement history of the pedestrian. However, radio communication based systems which exchange GPS based position information of the pedestrian and the car might have a detailed view to the movement history but the update frequency of GPS positions provided by the mobile phone reduces the speed of the system and might induce false alarms. In this paper, the additional use of pedestrian movement recognition using an acceleration sensor implemented in a mobile phone in the area of collision avoidance between cars and pedestrian is presented and a performance analysis is carried out using the results of an experiment. Finally, the benefits of this approach to the reduction of false alarms and detection of endangered pedestrians are discussed.
Profile Mining in CVS-Logs and Face-to-Face Contacts for Recommending Software Developers.Björn-Elmar Macek, Martin Atzmueller. In Proc. of the third Inernational Conference on Social Computing, pp. 250–257. IEEE Computer Society, Boston, MA, USA, 2011.
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Crowdsourcing.Bretschneider, U.; Leimeister, J. M. In Fachlexikon Technologie- und Innovationsmanagement, T. Sommerlatte, R. Achatz, M. Braun (eds.). 2011.
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Schöne neue Crowdsourcing Welt: Billige Arbeitskräfte, Weisheit der Massen?Bretschneider, U.; Leimeister, J. M. In Proceedings zum Workshop Gemeinschaft in Neuen Medien (GeNeMe 11), K. Meißner, M. Engelien (eds.), pp. 1–13. Dresden, Germany, 2011.
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Gestaltung technisch-sozialer Vernetzung in der Arbeitsorganisation: Untersuchung zur Nutzerakzeptanz von RFID-Technologie.Behrenbruch, K.; Atzmüller, M.; Kniewel, R.; Hoberg, S.; Stumme, G.; Schmidt, L. In Mensch, Technik, Organisation - Vernetzung im Produktentstehungs- und -herstellungsprozess: 57. Kongress der Gesellschaft für Arbeitswissenschaft (Chemnitz 2011), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 757–760. GfA-Press, Dortmund, 2011.
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Die Entwickler von Anwendungen zur technisch-sozialen Vernetzung stehen vor der Herausforderung einerseits nützliche und andererseits sichere und kontrollierbare Lösungen zu finden, um die Akzeptanz der späteren Nutzer sicherzustellen. In diesem Beitrag beschreiben wir einen benutzerorientierten Entwicklungsprozess für die RFID-basierte Anwendung MyGroup, die für die Kooperationsunterstützung am Arbeitsplatz (engl Computer Supported Cooperative Work, CSCW) eingesetzt wird. Dabei konzentrieren wir uns auf die frühen Phasen der benutzerorientierten Entwicklung und stellen einen Ansatz vor, der die Anforderungsanalyse mit Befragungen zur Nutzerakzeptanz auf der Grundlage eines theoretischen Szenarios verbindet.
Der Einsatz von RFID im ÖPNV: Vorteile für Verkehrsbetriebe und Akzeptanz unter Fahrgästen.Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In RFID im Blick. 2011.
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A Comparison of Content-Based Tag Recommendations in Folksonomy Systems.Illig, Jens; Hotho, Andreas; Jäschke, Robert; Stumme, Gerd. In Knowledge Processing and Data Analysis, Vol. 6581 of Lecture Notes in Computer Science, K. E. Wolff, D. E. Palchunov, N. G. Zagoruiko, U. Andelfinger (eds.), pp. 136–149. Springer, Berlin/Heidelberg, 2011.
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Recommendation algorithms and multi-class classifiers can support users of social bookmarking systems in assigning tags to their bookmarks. Content based recommenders are the usual approach for facing the cold start problem, i.e., when a bookmark is uploaded for the first time and no information from other users can be exploited. In this paper, we evaluate several recommendation algorithms in a cold-start scenario on a large real-world dataset.
Ableitung von Anforderungen zum Adaptionsverhalten in ubiquitären adaptiven Anwendungen.Evers, C.; Hoffmann, A.; Saur, D.; Geihs, K.; Leimeister, J. M. In Workshops der wissenschaftlichen Konferenz Kommunikation in verteilten Systemen (WowKiVS) 2011. Electronic Communications of the EASST. Berlin, Germany, 2011.
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Das Forschungszentrum für Informationstechnik-Gestaltung (ITeG).Krohn, Michael; Klein, Niklas; Jandt, Silke; Atzmueller, Martin; Scholz, Christoph; Hoffmann, Holger; Kniewel, Romy; Evers, Christoph. In Praxis der Informationsverarbeitung und Kommunikation, 34(4), pp. 238–240. 2011.
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Novel indoor localisation using an unsupervised Wi-Fi signal clustering method.Lau, Sian Lun; Xu, Yaqian; David, Klaus. In Future Network & Mobile Summit, pp. 1–8. IEEE, Warsaw, Poland, 2011.
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Indoor localisation continues to be an important research challenge. One interesting approach is to realise the localisation without specific additional hardware, such as special tags or ultrasonic systems, but rather with typically already available infrastructure such as Wi-Fi and cellular networks. Localisation techniques based on supervised learning, as observed in many previous investigations, require the availability of location labels that should be provided by experts or users. Unsupervised learning techniques are seen as an alternative where the localisation system automatically detects useful information to recognise locations without requiring explicit labelling from users. In this paper, a novel indoor localisation method using a density-based clustering method is presented. It utilises measured signal strength from surrounding Wi-Fi access points (APs) to automatically create fingerprints according to the accumulative frequency density of the signal strengths. The evaluations have shown that the algorithm is capable of room-level localisation with high precision in a normal office environment.
Mobile customer integration: A smartphone application prototype for conducting mobile conjoint studies.Eckjans, D.; Fähling, J.; Leimeister, J. M.; Krcmar, H. In International Conference on Mobile Business Mobile Internet: a new paradigm in a new value network, p. Paper 14. Como, Italy, 2011.
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Social Networks für Kinder und Jugendliche - Besteht ein ausreichender Datenschutz?Jandt, S.; Roßnagel, A. In Multimedia und Recht (MMR), pp. 637–642. 2011.
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Requirements Engineering for Product Service Systems - A State of the Art Analysis.Berkovich, M.; Leimeister, J. M.; Krcmar, H. In Business & Information Systems Engineering (BISE), 3(6), pp. 369–380. Springerlink, 2011.
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Enhancing the selection of methods for customer integration in innovation processes through a process-oriented description framework.Fähling, J.; Langer, S.; Schölkopf, J. M.; Leimeister, J. M.; Krcmar, H.; Lindemann, U. In International Conference on Research into Design (ICoRD) 2011. Bangalore, India, 2011.
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Entwicklung eines Instruments zur Qualitätsmessung von kundengenerierten Innovationsideen.Blohm, I.; Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Gemeinschaftsgestützte Innovationsentwicklung für Softwareunternehmen, J. M. Leimeister, H. Krcmar, K. Möslein, M. Koch (eds.), pp. 277–302. EUL Verlag, Lohmar, Germany, 2011.
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Die Anwendung denkt mit auf Schritt und Tritt.Geihs, Kurt. In Smart Mobile Apps Mit Business-Apps ins Zeitalter mobiler Geschaeftsprozesse, Verclas, Stephan; Linnhoff-Popien, Claudia (Hrsg.), pp. 319–329. Springer, 2011.
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NFC-gestützte Selbstbewertung von Symptomen bei der ALS.Maier, A.; Holm, T.; Linke, P.; Münch, C.; Leimeister, J. M.; Prinz, A.; Steinfurth, L.; Meyer, T. In 84. Kongress der Deutschen Gesellschaft für Neurologie. Wiesbaden, Germany, 2011.
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Self-Assessment of the Daily Food Intake in ALS via an Application on a Mobile Device.Holm, Teresa; Maier, André; Linke, Peter; Münch, Christoph; Maier, R.; Leimeister, Jan Marco; Prinz, Andreas; Steinfurth, Laura; Meyer, Thomas. In International Symposium on ALS/MND, p. 68. Informa Healthcare, Sydney, Australia, 2011.
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Social Tagging Recommender Systems.Balby Marinho, Leandro; Nanopoulos, Alexandros; Schmidt-Thieme, Lars; Jäschke, Robert; Hotho, Andreas; Stumme, Gerd; Symeonidis, Panagiotis. In Recommender Systems Handbook, F. Ricci, L. Rokach, B. Shapira, P. B. Kantor (eds.), pp. 615–644. Springer, New York, 2011.
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The new generation of Web applications known as (STS) is successfully established and poised for continued growth. STS are open and inherently social; features that have been proven to encourage participation. But while STS bring new opportunities, they revive old problems, such as information overload. Recommender Systems are well known applications for increasing the level of relevant content over the noise that continuously grows as more and more content becomes available online. In STS however, we face new challenges. Users are interested in finding not only content, but also tags and even other users. Moreover, while traditional recommender systems usually operate over 2-way data arrays, STS data is represented as a third-order tensor or a hypergraph with hyperedges denoting (user, resource, tag) triples. In this chapter, we survey the most recent and state-of-the-art work about a whole new generation of recommender systems built to serve STS.We describe (a) novel facets of recommenders for STS, such as user, resource, and tag recommenders, (b) new approaches and algorithms for dealing with the ternary nature of STS data, and (c) recommender systems deployed in real world STS. Moreover, a concise comparison between existing works is presented, through which we identify and point out new research directions.
Does Collaboration Among Participants Lead to Better Ideas in IT-Based Idea Competitions? An Empirical Investigation.Blohm, I.; Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In International Journal of Networking and Virtual Organisations, 9(2), pp. 106–122. 2011.
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SYNI – TCP Hole Punching Based on SYN Injection.Holzapfel, Sebastian; Wander, Matthäus; Wacker, Arno; Weis, Torben. In 10th IEEE International Symposium on Network Computing and Applications, IEEE NCA11. Cambridge, Massachusetts, USA, 2011.
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NFC based Seld-Assessment of Symptoms in ALS.Maier, André; Holm, Teresa; Linke, Peter; Steinfurth, Laura; Münch, Christoph; Meyer, R.; Leimeister, Jan Marco; Prinz, Andreas; Meyer, Thomas. In International Symposium on ALS/MND, p. 69. Informa Healthcare, Sydney, Australia, 2011.
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Collaboration Engineering for Innovation Design Processes using the Outcome-driven approach.Fähling, J.; Leimeister, J. M.; Krcmar, H. In 44. Hawaii International Conference on System Sciences (HICSS) 2011, pp. 1–10. Kauai, Hawaii, USA, 2011.
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Was bringen die aktivsten Teilnehmer in IT-gestützten Ideenwettbewerben? Der Einfluss von Teilnehmer-Aktivität auf Ideengenerierung und Ideenbewertung.Blohm, I.; Ebner, W.; Leimeister, J. M.; Krcmar, H. In 73. Wissenschaftliche Jahrestagung des Verbandes der Hochschullehrer für Betriebswirtschaft e.V. Nachhaltigkeit. Unternehmerisches Handeln in globaler Verantwortung. Kaiserslautern, Germany, 2011.
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2010[ to top ]

IT Challenges in M&A Transactions – The IT Carve-Out View on Divestments.Böhm, M.; Nominacher, B.; Fähling, J.; Leimeister, J. M.; Yetton, P.; Krcmar, H. In International Conference on Information Systems (ICIS). St. Louis, MO, USA, 2010.
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Heuristic Approaches for QoS-based Service Selection.Comes, Diana; Baraki, Harun; Reichle, Roland; Zapf, Michael; Geihs, Kurt. In 8th International Conference on Service Oriented Computing (ICSOC). Springer, San Francisco, USA, 2010.
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Qualitätsmanagement bei hybriden Produkten: Ein Ansatz zur Messung der Leistungsqualität hybrider Produkte.Böhm, M.; Sczudlek, A.; Knebel, U.; Leimeister, J. M.; Krcmar, H. In Hybride Wertschöpfung in der Gesundheitsförderung. Innovation - Dienstleistung - IT, J. M. Leimeister, H. Krcmar, M. Halle, K. Möslein (eds.), pp. 155–172. Eul Verlag, Lohmar, Germany, 2010.
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Movement recognition using the accelerometer in smartphones.Lau, Sian Lun; David, Klaus. In 2010 Future Network & Mobile Summit, pp. 1–9. IEEE, Florence, Italy, 2010.
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The area of activity recognition is essential for context-aware systems. Previous and current investigations demonstrate that the accelerometer is suitable for accurate movement and activity recognition. Since smartphones are used by people in their daily lives, they can be seen as an attractive sensor device for the purpose of activity recognition. In our work, experiments have been carried out to investigate the suitability of the built-in accelerometer by comparing the influences of classification algorithms, features and the combination of sampling rates and window sizes for features extraction have on the classification accuracy. Obtained results indicate that smartphones similar to the test device provide good accuracy in recognizing common movements.
Geschäftsmodelle für den Personal Health Manager.Böhm, M.; Leimeister, J. M.; Krcmar, H. In HybrideWertschöpfung in der Gesundheitsförderung. Innovation – Dienstleistung – IT, J. M. Leimeister, H. Krcmar, M. Halle, K. Möslein (eds.), pp. 213–222. Eul, Lohmar, Germany, 2010.
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Community Assessment using Evidence Networks.Mitzlaff, Folke; Atzmueller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In Proceedings of the Workshop on Mining Ubiquitous and Social Environments (MUSE2010). Barcelona, Spain, 2010.
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Community mining is a prominent approach for identifying (user) communities in social and ubiquitous contexts. While there are a variety of methods for community mining and detection, the effective evaluation and validation of the mined communities is usually non-trivial. Often there is no evaluation data at hand in order to validate the discovered groups. This paper proposes evidence networks using implicit information for the evaluation of communities. The presented evaluation approach is based on the idea of reconstructing existing social structures for the assessment and evaluation of a given clustering. We analyze and compare the presented evidence networks using user data from the real-world social bookmarking application BibSonomy. The results indicate that the evidence networks reflect the relative rating of the explicit ones very well.
QoS-based Self-Management for Business Processes.Comes, Diana; Zapf, Michael; Geihs, Kurt. In Proceedings of the SAKS 2010 workshop. Electronic Communications of the EASST, 2010.
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Accelerating customer integration into innovation processes using Pico-Jobs.Blohm, I.; Fähling, J.; Leimeister, J. M.; Krcmar, H.; Fischer, J. In 22. ISPIM Conference 2010. Bilbao, Spain, 2010.
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Supporting patient monitoring using activity recognition with a smartphone.Lau, Sian Lun; König, Immanuel; David, Klaus; Parandian, Baback; Carius-Düssel, Christine; Schultz, Martin. In 2010 7th International Symposium on Wireless Communication Systems, pp. 810–814. IEEE, York, England, 2010.
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In our work we envision the use of context awareness to complement and improve telemedicine services. One concrete example is the recognition of physical activity (PA) for therapies and treatments. The usage of context can provide newer services by assisting medical professionals and patients to obtain implicit information. We introduce the Context Aware Remote Monitoring Assistant (CARMA), an application implemented on the MATRIX telemedicine middleware platform. It enables activity recognition for patients using non-obtrusive devices. In this paper, a movement recognition approach is investigated using a smartphone with a built-in accelerometer. Experiments were carried out to compare the influences of classification algorithms, features and combinations for feature extraction conditions on the recognition accuracy. The obtained results indicated that the approach is viable and shows much potential.
Vorgehensmodelle für die Entwicklung hybrider Produkte - Eine Vergleichsanalyse.Langer, P.; Köbler, F.; Berkovich, M.; Weyde, F.; Leimeister, J. M.; Krcmar, H. In Multikonferenz Wirtschaftsinformatik (MKWI) 2010. Göttingen, Germany, 2010.
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Evaluation of the Technology Agnostic Service Creation Approach.Lau, Sian Lun; Klein, Niklas; Pirali, Andreas; Droegehorn, Olaf; David, Klaus. In Selbstorganiserende, adaptive, kontextsensitive verteilte Systeme 2010 (SAKS2010), Vol. 27. Electronic Communications of the EASST, 2010.
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Publikationsmanagement mit BibSonomy -- ein Social-Bookmarking-System für Wissenschaftler.Hotho, Andreas; Benz, Dominik; Eisterlehner, Folke; Jäschke, Robert; Krause, Beate; Schmitz, Christoph; Stumme, Gerd. In HMD -- Praxis der Wirtschaftsinformatik, Heft 271, pp. 47–58. 2010.
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Kooperative Verschlagwortungs- bzw. Social-Bookmarking-Systeme wie Delicious, Mister Wong oder auch unser eigenes System BibSonomy erfreuen sich immer größerer Beliebtheit und bilden einen zentralen Bestandteil des heutigen Web 2.0. In solchen Systemen erstellen Nutzer leichtgewichtige Begriffssysteme, sogenannte Folksonomies, die die Nutzerdaten strukturieren. Die einfache Bedienbarkeit, die Allgegenwärtigkeit, die ständige Verfügbarkeit, aber auch die Möglichkeit, Gleichgesinnte spontan in solchen Systemen zu entdecken oder sie schlicht als Informationsquelle zu nutzen, sind Gründe für ihren gegenwärtigen Erfolg. Der Artikel führt den Begriff Social Bookmarking ein und diskutiert zentrale Elemente (wie Browsing und Suche) am Beispiel von BibSonomy anhand typischer Arbeitsabläufe eines Wissenschaftlers. Wir beschreiben die Architektur von BibSonomy sowie Wege der Integration und Vernetzung von BibSonomy mit Content-Management-Systemen und Webauftritten. Der Artikel schließt mit Querbezügen zu aktuellen Forschungsfragen im Bereich Social Bookmarking.
Feature Weighting for CPM-Based Context Validation.Brgulja, Nermin; Kusber, Rico; David, Klaus. In Proceedings of the 5th European Conference on Smart Sensing and Context, P. Lukowicz, K. Kunze, G. Kortuem (eds.), pp. 82–93. Springer Berlin Heidelberg, Berlin, Heidelberg, 2010.
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Context Pattern Method (CPM) is a statistical method that is used to quantify the validity of contextual information based on dependent contexts using previous knowledge about the system. The method exploits the interdependencies in a context aware system among entities and the environment in which they reside in order to calculate the Probability of Correctness (PoC) for a context under investigation. PoC expresses the level of confidence, that the contextual information sensed, are in fact correct or not. Obviously, each of the dependent contexts has a different importance to the context that is under investigation. Therefore its influence to the PoC measure needs to be weighted accordingly. In this paper we discuss the concept of feature weighting and show how feature selection algorithms can be applied for this purpose. We apply chi2, relief-f and mutual information, algorithms to the CPM method in order to weight the influence of the individual dependent contexts to the overall PoC measure and evaluate the method’s performance.
Zonen der Ununterscheidbarkeit. Ökonomie und Anerkennung im digitalen Zeitalter.Lamla, Jörn. In Kapitalistischer Realismus. Von der Kunstaktion zur Gesellschaftskritik, S. Neckel (ed.), pp. 256–278. Campus, Frankfurt/ New York, 2010.
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Validating Context Information in Context Aware Systems.Brgulja, Nermin; Kusber, Rico; David, Klaus. In 2010 Sixth International Conference on Intelligent Environments, pp. 140–145. IEEE, Kuala Lumpur, Malaysia, 2010.
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Context-aware computing refers to a general class of computing systems that can sense their physical environment and adapt their behavior accordingly. In order to behave properly, such systems rely on valid and reliable context information. Therefore concepts for validating the correctness of context data are required. In our previous research we have introduced the Context Pattern Method (CPM) that calculates the probability of correctness measure, which quantifies the belief that the context information is correct and reliable. In this paper we use the CPM method and two well known statistical classification methods, Linear Discriminant Analysis (LDA) and the Support Vector Machines (SVM), to validate the context information and compare their performances under different conditions.
Fast Discovery of Relevant Subgroup Patterns.Lemmerich, Florian; Rohlfs, Matthias; Atzmueller, Martin. In Proc. 23rd FLAIRS Conference. 2010.
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Extending Open Innovation Platforms into the real world - Using Large Displays in Public Spaces.Blohm, I.; Ott, F.; Bretschneider, U.; Huber, M.; Rieger, M.; Glatz, F.; Koch, M.; Leimeister, J. M.; Krcmar, H. In 10. European Academy of Management Conference (EURAM) 2010. Rome, Italy, 2010.
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Does collaboration among participants lead to better ideas in IT-based idea competitions - An empirical investigation.Blohm, I.; Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Hawai’i International Conference on System Sciences (HICSS) 2010. Kauai, USA, 2010.
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Integration von Produkt & Dienstleistung: Hybride Wertschöpfung. Böhmann, T.; Leimeister, J. M. 1st ed. Books on Demand, Norderstedt, 2010.
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Social Bookmarking-Systeme – die unerkannten Datensammler - Ungewollte personenbezogene Datenverabeitung?Lerch, Hana; Krause, Beate; Hotho, Andreas; Roßnagel, Alexander; Stumme, Gerd. In MultiMedia und Recht, 7, pp. 454–458. 2010.
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Hybride Wertschöpfung in der Gesundheitsförderung. Innovation - Dienstleistung - IT. Leimeister, J. M.; Krcmar, H.; Halle, M.; Möslein, K. Eul-Verlag, ISBN: 978-3899369144, Lohmar, Germany, 2010.
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Entwicklung eines Produktivitätsmodells zur Systematisierung von Lerndienstleistungen.Bitzer, P.; Wegener, R.; Leimeister, J. M. In 40. Jahrestagung der Gesellschaft für Informatik 2010. Leipzig, Germany, 2010.
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Automotive Services.Leimeister, J. M.; Krcmar, H.; Hoffmann, H.; Schermann, M. J. M. Leimeister, H. Krcmar, H. Hoffmann, M. Schermann (eds.). BoD Verlag, ISBN: 978-3839127087, Norderstedt, Germany, 2010.
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OnkoConnect - Mobile Informationssysteme zur Verbesserung der Lebensqualität krebskranker Jugendlicher - Und was fünf Jahre später daraus geworden ist.Leimeister, J. M. In Humane Nutzung der Informationstechnologie, H. Heilmann (ed.). Akademische Verlagsgesellschaft AKA GmbH, Heidelberg, Germany, 2010.
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Collective Intelligence.Leimeister, J. M. In Business & Information Systems Engineering, 2(4), pp. 245–248. 2010.
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Kollektive Intelligenz.Leimeister, J. M. In Wirtschaftsinformatik, 52(4), pp. 239–242. Gabler, Wiesbaden, 2010.
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IT als Enabler offener Innovationsprozesse.Blohm, I.; Bretschneider, U.; Huber, M.; Möslein, K.; Koch, M.; Rieger, M.; Glatz, F.; Leimeister, J. M.; Krcmar, H. In Innovationsstrategien jenseits traditionellen Managements, Tagungsband der Ersten Tagung des Förderschwerpunkts des BMBF, H. Jacobsen, B. Schallock (eds.). Fraunhofer IRB Verlag, 2010.
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Thesen zum Management offener Innovationsprozesse.Leimeister, J. M.; Wagner, D.; Bendig, A.; Hoppe, U.; Möslein, K.; Lemken, T.; Stein, V. In 1. BMBF Förderschwerpunkttagung Innovationsstrategien jenseits traditionellen Managements. Berlin, Germany, 2010.
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Nutzerintegration in die Anforderungserhebung für Ubiquitous Computing Systeme.Hoffmann, A.; Hoffmann, H.; Leimeister, J. M. In Workshop über Selbstorganisierende, adaptive, kontextsensitive verteilte Systeme (SAKS 2010). Electronic Communications of the EASST, p. 9. European Association of Software Science and Technology (EASST), Berlin, Germany, 2010.
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Zugänge zur virtuellen Konsumwelt. Abgrenzungsprobleme und Revisionsstufen der Ethnografie.Lamla, Jörn. In „Auf unsicherem Terrain“. Ethnographische Forschung im Kontext des Bildungs- und Sozialwesens, F. et al. Heinzel (ed.), pp. 127–139. VS-Verlag, Wiesbaden, 2010.
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Do German physicians want electronic health services? A characterization of potential adopters and rejectors in German ambulatory care.Duennebeil, S.; Sunyaev, A.; Blohm, I.; Leimeister, J. M.; Krcmar, H. In 3. International Conference on Health Informatics (HealthInf) 2010. Valencia, Spain, 2010.
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Unanticipated Dynamic Adaptation of Mobile Applications. Technical Report (PhD dissertation), . Khan, Mohammad Ullah. PhD dissertation. University of Kassel, Fachbereich 16: Elektrotechnik/Informatik, Distributed Systems Group, Wilhelmshöher Allee 73, 34121 Kassel, Germany, 2010, March.
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Driven by the emergence of mobile and ubiquitous computing there is a growing demand for context-aware applications that can dynamically adapt to their runtime environment. Middleware support for providing such adaptation to mobile applications has been an attractive research and development issue for several years now. However, one of the major challenges to support adaptation is that they can not be always foreseen during the design time. In a ubiquitous computing environment, a number of mobile devices running adaptive applications supported by the instances of the same middleware may come and go in a particular adaptation domain in an unanticipated manner. Moreover, third party services may also appear and disappear with respect to that particular adaptation domain. In componentbased application architectures, with the enhancement of integrating services, mobile applications may benefit from using the components that are provided by other users as well as using third party services. At runtime the application is composed of the components and the services available within the adaptation domain. This thesis provides an approach, including theoretical background, an adaptation middleware, an MDA-based application development methodology and a tool chain, in order to solve such unanticipated adaptation problems.
Towards Explanation-Aware Social Software: Applying the Mining and Analysis Continuum of Explaining.Atzmueller, Martin; Roth-Berghofer, Thomas. In Proc. Workshop on Explanation-aware Computing ExaCt 2010 @ ECAI 2010. 2010.
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Strategies for Development and Adoption of EHR in German Ambulatory Care.Dünnebeil, S.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In 4th International Conference on Pervasive Computing Technologies for Healthcare 2010, p. Paper 8887. Munich, Germany, 2010.
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Ready for the MACE? The Mining and Analysis Continuum of Explaining Uncovered. Technical Report (RR-10-02), . Atzmueller, Martin; Roth-Berghofer, Thomas. Deutsches Forschungszentrum für Künstliche Intelligenz, 2010.
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Towards Mining Descriptive Community Patterns.Atzmueller, Martin; Mitzlaff, Folke. In Workshop on Mining Patterns and Subgroups. Lorentz Center, Leiden, The Netherlands. Awarded with the Best Discovery Award, 2010.
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Encrypted NFC-emergency tags for German telemedicine.Dünnebeil, S.; Köbler, F.; Koene, P.; Leimeister, J. M.; Krcmar, H. In ID WORLD International Congress. ID World, Milano, Italy, 2010.
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The nature of knowledge-intensive person-oriented services - challenges for leveraging service engineering potentials.Menschner, P.; Hartmann, M.; Leimeister, J. M. In 2. International Symposium of Service Sciences (ISSS). Lecture Notes in Informatics (LNI), Leipzig, Germany, 2010.
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Evaluationsmethoden im Kontext iterativer Gestaltungsmodelle für adaptive und auf Kooperation ausgerichtete Anwendungen.Behrenbruch, K.; Kniewel, R.; Hoberg, S.; Schmidt, L. Duisburg, 2010.
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Es existieren viele Methoden für die Evaluation von softwarebasierten Produkten. Die Auswahl der passenden Methoden wird insbesondere dann zur Herausforderung, wenn innovative Anwendungen mit neuartigen Anforderungen an die Evaluation vorliegen. Zudem kann es notwendig werden, etablierte Metho-den anzupassen. Dieser Beitrag diskutiert bezogen auf adaptive und auf Kooperati-on ausgerichtete Systeme mögliche Vorgehensweisen in diesem Bereich. Dabei werden iterative Vorgehensweisen aus den Bereichen Software Engineering und Usability Engineering in einem gemeinsamen Entwurf für ein integratives Ent-wicklungsmodell zusammengeführt. Zudem werden Evaluationsbeispiele aus der laufenden Forschungsarbeit im Projekt VENUS dargestellt.
eGK-Mehrwertanwendung zur elektronischen Krankenhauseinweisung.Dünnebeil, S.; Sunyaev, A.; Mauro, C.; Leimeister, J. M.; Krcmar, H. In conhIT - Workshops von Arbeits- und Projektgruppen der Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (GMDS) und des Berufsverbandes für Medizinische Informatik (BMVI). Berlin, Germany, 2010.
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Technology Use by Providers of Person-Oriented Services: Actual Usage and Acceptance Issues in Health Care.Menschner, P.; Leimeister, J. M. In 20. International RESER Conference (RESER) 2010. Gothenburg, Sweden, 2010.
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Systematische Entwicklung mobiler und IT-gestützter Dienstleistungen für die Generation 50+.Menschner, P.; Leimeister, J. M. In Mit Dienstleistungen die Zukunft gestalten - Impulse aus Forschung und Praxis. Beiträge der 8. Dienstleistungstagung des BMBF, I. Gatermann, M. Fleck (eds.). Campus Verlag, Frankfurt am Main, Germany, 2010.
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IT Governance and Types of IT Decision Makers in German Hospitals - An empirical study among IT Decision Makers in German Hospitals.Köbler, F.; Fähling, J.; Krcmar, H.; Leimeister, J. M. In Business & Information Systems Engineering, 2(6), pp. 359–370. 2010.
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From Products to Product-Service Systems: IT Driven Transformation of a Medical Equipment Manufacturer to a Customer-Centric Solution Provider.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In International Conference on Information Systems (ICIS). Saint Louis, MO, USA, 2010.
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The IWK2010 Workshops: DERIS2010 and EMDT2010. Proceedings of the IWK2010 Workshops: International Workshop on Design, Evaluation and Refinement of Intelligent Systems (DERIS2010) and the First International Workshop on Evolution Support for Model-Based Development and Testing (EMDT2010). Atzmueller, Martin; Knauf, Rainer; Bode, Stephan; Farooq, Qurat-Ul-Ann; Riebisch, Matthias. In Vol. 646 of CEUR-WS. RWTH Aachen University, 2010.
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IT-Governance und IT-Entscheidertypen in deutschen Krankenhäusern. Eine empirische Untersuchung unter Krankenhaus IT-Leitern.Köbler, F.; Fähling, J.; Krcmar, H.; Leimeister, J. M. In Wirtschaftsinformatik, 52(6), pp. 353–365. 2010.
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Using Online Social Networking to Enhance Social Connectedness and Social Support for the Elderly.Goswami, S.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In International Conference on Information Systems (ICIS). Saint Louis, MO, USA, 2010.
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Trust as a design aspect of context aware systems.Manouchehri, S.; Söllner, M.; Leimeister, J. M. In 23. International Conference on Architecture of Computing Systems (ARCS) 2010. Hannover, Germany, 2010.
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Prototyping komplexer Geschäftsanwendungen im Automobil.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In Multikonferenz Wirtschaftsinformatik (MKWI) 2010, M. Schumann, L. M. Kolbe, M. H. Breitner (eds.). Göttingen, Germany, 2010.
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Modellierung von Dienstleistungen mittels Business Service Blueprinting Modeling.Meis, J.; Menschner, P.; Leimeister, J. M. In Dienstleistungsmodellierung: Interdisziplinäre Konzepte und Anwendungsszenarien - Proceedings der Dienstleistungsmodellierung 2010, Workshop im Rahmen der Modellierung 2010, Vol. 2, O. Thomas, M. Nüttgens (eds.), pp. 41–67. Physica, Heidelberg, Germany, 2010.
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NFriendConnector - Verbindung zwischen virtueller und realer sozialer Interaktion.Köbler, F.; Koene, P.; Goswami, S.; Leimeister, J. M.; Krcmar, H. In 5. Konferenz Mobile und Ubiquitäre Informationssysteme (MMS2010) im Rahmen der Multikonferenz Wirtschaftsinformatik (MKWI2010), Vol. 5. Göttingen, Germany, 2010.
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Combining Radio Transmission with Filters for Pedestrian Safety: Experiments and Simulations.Flach, Alexander; David, Klaus. In 2010 IEEE 72nd Vehicular Technology Conference Fall (VTC-Fall), pp. 1–5. IEEE, Ottawa, Canada, 2010.
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Improving the safety of vulnerable road users is an international demand because still thousands of pedestrians and cyclists are injured or killed in accidents with cars, trucks and busses. Car manufacturers and several research groups work on different solutions to avoid accidents with the help of sensor based systems. Moreover, research is done in radio communication based collision avoidance systems which uses exchanged information to distinguish between dangerous and non dangerous situations. In this paper we present various filters differing by the input information used to find dangerous situations implemented in a radio based collision avoidance system simulator. The results of the filters applied to a scenario are also presented. Furthermore, we analyse the influence of different conditional parameters to transmission delay times by taking further measurements for cellular networks to determine if cellular networks can be used as a communication technology in a collision avoidance system.
Wahrgenommener Wertbeitrag von Informationstechnologie in deutschen Krankenhäusern. Eine empirische Untersuchung unter kaufmännischen, medizinischen und IT-Leitern. Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. Books on Demand, ISBN: 978-3842334151, Norderstedt, 2010.
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Managing the IT carve-out in a SBU divestment.Fähling, J.; Böhm, M.; Leimeister, J. M.; Yetton, P.; Krcmar, H. In European Conference on Information Systems (ECIS), Vol. 18. Pretoria, South Africa, 2010.
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Datenschutz im Web 2.0 am Beispiel des sozialen Tagging-Systems BibSonomy.Krause, Beate; Lerch, Hana; Hotho, Andreas; Roßnagel, Alexander; Stumme, Gerd. In Informatik-Spektrum, pp. 1–12. Springer, Berlin / Heidelberg, 2010.
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Soziale Tagging-Systeme gehören zu den in den vergangenen Jahren entstandenen Web2.0-Systemen. Sie ermöglichen es Anwendern, beliebige Informationen in das Internet einzustellen und untereinander auszutauschen. Je nach Anbieter verlinken Nutzer Videos, Fotos oder Webseiten und beschreiben die eingestellten Medien mit entsprechenden Schlagwörtern (Tags). Die damit einhergehende freiwillige Preisgabe oftmals persönlicher Informationen wirft Fragen im Bereich der informationellen Selbstbestimmung auf. Dieses Grundrecht gewährleistet dem Einzelnen, grundsätzlich selbst über die Preisgabe und Verwendung seiner persönlichen Daten zu bestimmen. Für viele Funktionalitäten, wie beispielsweise Empfehlungsdienste oder die Bereitstellung einer API, ist eine solche Kontrolle allerdings schwierig zu gestalten. Oftmals existieren keine Richtlinien, inwieweit Dienstanbieter und weitere Dritte diese öffentlichen Daten (und weitere Daten, die bei der Nutzung des Systems anfallen) nutzen dürfen. Dieser Artikel diskutiert anhand eines konkreten Systems typische, für den Datenschutz relevante Funktionalitäten und gibt Handlungsanweisungen für eine datenschutzkonforme technische Gestaltung.
Using MDM-methods in order to improve managing of iterations in design processes.Kortler, S.; Helms, B.; Berkovich, M.; Lindemann, U.; Shea, K.; Leimeister, J. M.; Krcmar, H. In 12. International Dependency and Structure Modelling Conference (DSM) 2010. Cambridge, UK, 2010.
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6th Workshop on Information Systems and Services Sciences 2010.Krcmar, H.; Leimeister, J. M.; Leimeister, S.; Schermann, M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2010.
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5th Workshop on Information Systems and Services Sciences 2010.Krcmar, H.; Leimeister, J. M.; Leimeister, S.; Schermann, M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2010.
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Automatische Dienstvermittlung in dienstorientierten Architekturen in Aktion. Geihs, Kurt; Bleul, Steffen; Comes, Diana. University of Kassel, 2010.
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Participatory Requirements Analysis: Entwicklung innovativer NFC- und IT-basierter Care-Dienstleistungen für 50+.Koene, P.; Köbler, F.; Menschner, P.; Altmann, M.; Prinz, A.; Leimeister, J. M.; Krcmar, H. In 3. Deutscher AAL-Kongress 2010, Vol. 3. Berlin, Germany, 2010.
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Proceedings of the LWA 2010 - Lernen, Wissen, Adaptivität. Atzmueller, Martin; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In of Technical report (KIS), 2010-10. Department of Electrical Engineering/Computer Science, Kassel University, 2010.
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RFID-based media usage panels in real-world settings.Koene, P.; Köbler, F.; Burgner, P.; Resatsch, F.; Sandner, U.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS). Pretoria, South Africa, 2010.
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Standardized device services - A design pattern for service oriented integration of medical devices.Mauro, C.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In Hawaii International Conference on System Sciences (HICSS) 2010. Kauai, USA, 2010.
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Automatisierungsentscheidungen bei der Gestaltung von Dienstleistungselementen hybrider Produkte.Esch, S.; Leimeister, J. M.; Krcmar, H. In Hybride Wertschöpfung in der Gesundheitsförderung. Ergebnisse des Verbundprojekts "Systematisches Design zur Integration von Produkt und Dienstleistung in der Gesundheitswirtschaft" (SPRINT), J. M. Leimeister, H. Krcmar, M. Halle, K. Möslein (eds.), pp. 61–79. Josef EUL Verlag, Köln, Germany, 2010.
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Der Personal Health Manager - ein IT-gestütztes Bewegungsprogramm.Esch, S.; Köbler, F.; Knebel, U.; Leimeister, J. M.; Krcmar, H. In Informatik 2010: Service Science - Neue Perspektiven für die Informatik, Vol. 1, K. Fähnrich, B. Franczyk (eds.), pp. 15–20. Gesellschaft für Informatik, Leipzig, Germany, 2010.
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Kundenintegration bei der Erstellung bedarfsgerechter automotive Software.Hoffmann, H.; Leimeister, J.M.; Krcmar, H. In Humane Nutzung der Informationstechnologie, H. Heilmann (ed.). Akademische Verlagsgesellschaft AKA GmbH, Heidelberg, Germany, 2010.
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Decision-Maker-Aware Design of Descriptive Data Mining.Kaempgen, Benedikt; Lemmerich, Florian; Atzmueller, Martin. In Proc. 55th IWK, International Workshop on Design, Evaluation and Refinement of Intelligent Systems (DERIS). 2010.
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The Mining and Analysis Continuum of Explaining Uncovered.Atzmueller, Martin; Roth-Berghofer, Thomas. In Proc. 30th SGAI International Conference on Artificial Intelligence (AI-2010). 2010.
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Service oriented device integration - An analysis of SOA design patterns.Mauro, C.; Leimeister, J. M.; Krcmar, H. In Hawaii International Conference on System Sciences (HICSS) 2010. Kauai, USA, 2010.
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Vom Produkt zur IT-gestützten integrierten Lösung – ein Fallbeispiel.Köbler, F.; Fähling, J.; Vattai, A.; Leimeister, J. M.; Krcmar, H. In Schriften zu Kooperations- und Mediensysteme Band 24. Hybride Wertschöpfung in der Gesundheitsförderung. Innovation – Dienstleistung – IT, V. Wulff, J. Haake, T. Herrmann, H. Krcmar, J. Schlicher, G. Schwabe, J. Ziegler (eds.), pp. 45–59. Josef EUL Verlag GmbH, Lohmar, Germany, 2010.
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From medical processes to workflows: modeling of clinical pathways with the unified modeling language.Mauro, C.; Happle, T.; Sunyaev, A.; M.Leimeister, J.; Krcmar, H. In 3. International Conference on Health Informatics (HealthInf) 2010. Valencia, Spain, 2010.
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LocaTag - An NFC-based system enhancing instant messaging tools with real-time user location.Köbler, F.; Koene, P.; Krcmar, H.; Altmann, M.; Leimeister, J. M. In 2. International Workshop on Near Field Communication (NFC) 2010, Vol. 2. Monaco, Monaco, 2010.
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Basic Approach of Timing in Context Aware Architectures verified by concrete Advantages.Klein, Niklas; David, Klaus. In Proceedings of The 10th Annual International Symposium on Applications and the Internet. 2010.
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Semantics made by you and me: Self-emerging ontologies can capture the diversity of shared knowledge.Benz, Dominik; Hotho, Andreas; Stützer, Stefan; Stumme, Gerd. In Proceedings of the 2nd Web Science Conference (WebSci10). Raleigh, NC, USA, 2010.
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Digitale Konsumwelten als politische Bildungsräume? Zur Typologisierung der Online-Praktiken von Verbrauchern.Lamla, Jörn. In Neue digitale Kultur- und Bildungsräume, P. Grell, H. Schelhowe, W. Marotzki (eds.), pp. 145–167. VS-Verlag, Wiesbaden, 2010.
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2020 Vision - The Wireless World Research Forum Looks to the Future.David, Klaus; Dixit, Sudhir; Jefferies, Nigel. In IEEE Vehicular Technology Magazine, 5(3), pp. 22–29. 2010.
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Based on the wireless world research forum (WWRF) vision of seven trillion wireless devices serving seven billion people by 2020, we identified several key user requirements and a scenario to motivate research on many different technical areas. If addressed successfully by the research community and the industry, innovation in new air interfaces (for high bit rate and capacity and low latency); network architectures (like mobile cloud, mesh networks, or cognitive systems); solutions to privacy, security, and trust; and devices that do not need to be recharged for long periods would unleash an era of the wireless world where: each and every person will be empowered by wireless services. Wireless device(s) will become our interface to the digital world. We will live an ambient life style, such that: 1) our mobile device will become the key enabler to interact with smart environments and users; and 2) our mobile device will be a trusted personal assistant that will be indispensible. We will enjoy and benefit from an untethered-but-connected user experience and ubiquitous service delivery with a consistent user experience.
Adaptierte Heuristische Evaluation einer neuartigen sozialen Software.Hoberg, S.; Kniewel, R.; Behrenbruch, K.; Schmidt, L.; Pirali, A.; David, K. In Useware 2010: Grundlagen - Methoden - Technologien (Baden-Baden 2010), of VDI-Berichte, V.-G. M.- und Automatisierungstechnik (ed.), pp. 129–138. VDI-Verlag, Düsseldorf, 2010.
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In diesem Beitrag wird die Evaluation der Gebrauchstauglichkeit und Vernetzungswirkung der prototypisch umgesetzten mobilen sozialen Software Social Link mittels einer adaptierten Heuristischen Evaluation beschrieben. Social Link unterstützt seine Anwender dabei, Informationen über sich, den eigenen Standpunkt und das vorherrschende Wetter an Mitglieder einer Peer Group zu verschicken. Für die Evaluation wurden Nielsens Web-Heuristiken für die Anwendung auf mobile soziale Applikationen angepasst. Die Software wurde von sechs Evaluatoren bewertet und Optimierungsvorschläge für die Weiterentwicklung von Social Link generiert.
Erste Ansätze zur Systematisierung und Standardisierung hybrider Wertschöpfung.Köbler, F.; Leimeister, J. M.; Krcmar, H. In Schriften zu Kooperations- und Mediensysteme Band 24. Hybride Wertschöpfung in der Gesundheitsförderung. Innovation – Dienstleistung – IT, V. Wulff, J. Haake, T. Herrmann, H. Krcmar, J. Schlichter, G. Schwabe, J. Ziegler (eds.), pp. 81–90. Josef EUL Verlag GmbH, Lohmar, Germany, 2010.
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„Consumer Citizen“. Privatheit und Öffentlichkeit in der Verbraucherdemokratie.Lamla, Jörn. In Die Grenzen des Privaten, S. Seubert, P. Niesen (eds.), pp. 219–234. Nomos, Baden-Baden, 2010.
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DAG Based Context Reasoning: Optimised DAG Creation.Klein, Niklas; Sigg, Stephan; David, Klaus; Beigl, Michael. In Proceedings of Workshop on Context-Systems Design, Evaluation and Optimisation. ARCS 2010 - Architecture of Computing Systems. Hannover, Germany, 2010.
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Towards Requirements Engineering for "Software as a Service".Berkovich, M.; Esch, S.; Leimeister, J. M.; Krcmar, H. In Multikonferenz Wirtschaftsinformatik (MKWI) 2010. Göttingen, Germany, 2010.
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Query Logs as Folksonomies.Benz, Dominik; Hotho, Andreas; Jäschke, Robert; Krause, Beate; Stumme, Gerd. In Datenbank-Spektrum, 10(1), pp. 15–24. 2010.
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Query logs provide a valuable resource for preference information in search. A user clicking on a specific resource after submitting a query indicates that the resource has some relevance with respect to the query. To leverage the information ofquery logs, one can relate submitted queries from specific users to their clicked resources and build a tripartite graph ofusers, resources and queries. This graph resembles the folksonomy structure of social bookmarking systems, where users addtags to resources. In this article, we summarize our work on building folksonomies from query log files. The focus is on threecomparative studies of the system’s content, structure and semantics. Our results show that query logs incorporate typicalfolksonomy properties and that approaches to leverage the inherent semantics of folksonomies can be applied to query logsas well.
Kultureller Kapitalismus im Web 2.0. Zur Analyse von Segmentations-, Intersektions- und Aushandlungsprozessen in den sozialen Welten des Internets.Lamla, Jörn. In Zeitschrift für Qualitative Forschung, (1), pp. 11–36. 2010.
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Time Locality: A Novel Parameter for Quality of Context.Klein, Niklas; David, Klaus. In Proceedings of Seventh International Conference on Networked Sensing Systems. 2010.
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Ökonomien des Sozialen im Web 2.0.Lamla, Jörn. In Zeitschrift für Qualitative Forschung, (1), J. Lamla; W. Marotzki (eds.), pp. 3–9. 2010.
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Kulturelle Wertschöpfung in digitalen Märkten. Arenen der Intersek-tion sozialer und ökonomischer Welten im Internet.Lamla, Jörn. In Unsichere Zeiten. Herausforderungen gesellschaftlicher Transformationen. Verhandlungen des 34. Kongresses der DGS in Jena 2008., H.-G. Soeffner (ed.). VS-Verlag, Wiesbaden, 2010.
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help.yourself@web_2.0. Kunden-arbeit zwischen Selbstbedienung und sozialer Produktion – zur Einführung.Kleemann, Frank; Lamla, Jörn; Günter, Voß G. In Unsichere Zeiten. Herausforderungen gesellschaftlicher Transformationen. Verhandlungen des 34. Kongresses der DGS in Jena 2008. CD-ROM, H.-G. Soeffner (ed.). VS-Verlag, Wiesbaden, 2010.
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Ein Bezugsrahmen für Requirements Engineering hybrider Produkte.Berkovich, M.; Leimeister, J. M.; Krcmar, H. In Multikonferenz Wirtschaftsinformatik (MKWI) 2010. Göttingen, Germany, 2010.
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User Involvement in Requirements Elicitation on the Example of a System with Autonomous Mobile Robots for Inspection of Gas Pipes.Cramar, L.; Hegenberg, J.; Schmidt, L. 2010.
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High technical know-how is needed to automate a manually conducted task. During the system design process the main focus is usually put on the engineering part, but the involvement of users, their knowledge, workflow, and mental models are rarely considered. The resulting technical system is fully functional, but insufficiently accepted by the users. As an example of user involvement in requirements analysis, we present a conceptual design of a system with autonomous mobile robots for inspection of gas pipes in large technical plants. In addition to user observation and task analysis, a questionnaire for elicitation of user requirements has been developed. The questionnaire inquires the operators’ knowledge and flow of work during the inspection planning and conducting, the impact of environmental parameters, subjective difficulties, and anticipation of advantages of using the system. The resulting implications for the development and design of human-computer-interface as well as human-robot-interaction are introduced.
Academic Publication Management with PUMA - collect, organize and share publications.Benz, Dominik; Hotho, Andreas; Jäschke, Robert; Stumme, Gerd; Halle, Axel; Lima, Angela Gerlach Sanches; Steenweg, Helge; Stefani, Sven. In Proceedings of the European Conference on Research and Advanced Technology for Digital Libraries (ECDL) 2010, Vol. 6273 of Lecture Notes in Computer Science, M. Lalmas, J. Jose, A. Rauber, F. Sebastiani, I. Frommholz (eds.), pp. 417–420. Springer, Berlin/Heidelberg, 2010.
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The PUMA project fosters the Open Access movement und aims at a better support of the researcher’s publication work. PUMA stands for an integrated solution, where the upload of a publication results automatically in an update of both the personal and institutional homepage, the creation of an entry in a social bookmarking systems like BibSonomy, an entry in the academic reporting system of the university, and its publication in the institutional repository. In this poster, we present the main features of our solution.
Bridging the Gap--Data Mining and Social Network Analysis for Integrating Semantic Web and Web 2.0.Berendt, Bettina; Hotho, Andreas; Stumme, Gerd. In Web Semantics: Science, Services and Agents on the World Wide Web, 8(2-3), pp. 95–96. 2010.
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The social bookmark and publication management system BibSonomy.Benz, Dominik; Hotho, Andreas; Jäschke, Robert; Krause, Beate; Mitzlaff, Folke; Schmitz, Christoph; Stumme, Gerd. In The VLDB Journal. Springer, Berlin / Heidelberg, 2010.
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Social resource sharing systems are central elements of the Web 2.0 and use the same kind of lightweight knowledge representation, called folksonomy. Their large user communities and ever-growing networks of user-generated content have made them an attractive object of investigation for researchers from different disciplines like Social Network Analysis, Data Mining, Information Retrieval or Knowledge Discovery. In this paper, we summarize and extend our work on different aspects of this branch of Web 2.0 research, demonstrated and evaluated within our own social bookmark and publication sharing system BibSonomy, which is currently among the three most popular systems of its kind. We structure this presentation along the different interaction phases of a user with our system, coupling the relevant research questions of each phase with the corresponding implementation issues. This approach reveals in a systematic fashion important aspects and results of the broad bandwidth of folksonomy research like capturing of emergent semantics, spam detection, ranking algorithms, analogies to search engine log data, personalized tag recommendations and information extraction techniques. We conclude that when integrating a real-life application like BibSonomy into research, certain constraints have to be considered; but in general, the tight interplay between our scientific work and the running system has made BibSonomy a valuable platform for demonstrating and evaluating Web 2.0 research.
Social Software in Unternehmen - Nutzenpotentiale und Adoption in der innerbetrieblichen Zusammenarbeit.Manouchehri, Shakib. N. Szyperski; W. Matthes; U. Winand; J. Griese; H. von Kortzfleisch; L. Theuvsen; A. Al-Laham (eds.). Eul Verlag, 2010.
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Social Connectedness on Facebook - An explorative study on status message usage.Köbler, F.; Riedl, C.; Vetter, C.; Leimeister, J. M.; Krcmar, H. In 16. Americas Conference on Information Systems (AMCIS) 2010. Lima, Peru, 2010.
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Tool support for the participatory design of end user oriented applications in the automobile.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS). Pretoria, South Africa, 2010.
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Evaluation des Produkt-Dienstleistungsangebots in der Medizintechnikbranche.Köbler, F.; Vattai, A.; Leimeister, J. M.; Krcmar, H. In Schriften zu Kooperations- und Mediensysteme Band 24. Hybride Wertschöpfung in der Gesundheitsförderung. Innovation – Dienstleistung – IT, V. Wulff, J. Haake, T. Herrmann, H. Krcmar, J. Schlichter, G. Schwabe, J. Ziegler (eds.), pp. 199–212. Josef EUL Verlag GmbH, Lohmar, Germany, 2010.
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Validation of Mixed-Structured Data Using Pattern Mining and Information Extraction.Atzmueller, Martin; Beer, Stephanie. In Proc. 55th IWK, International Workshop on Design, Evaluation and Refinement of Intelligent Systems (DERIS). University of Ilmenau, 2010.
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Europäisches und nationales Medienrecht im Dialog – Recht – Politik – Kultur – Technik – Nutzung. Kleist, T.; Roßnagel, A.; Scheuer, A. In Vol. 39 of Schriftenreihe des Instituts für Europäisches Medienrecht. Nomos, 2010.
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The Scaffolding of a Formal Context.Doerfel, Stephan. In Concept Lattices and Their Applications 2010 - Proceedings of the 7th International Conference on Concept Lattices and Their Applications Sevilla, Spain, October 19-21, 2010., Vol. 672, M. Kryszkiewicz, S. Obiedkov (eds.), pp. 283–293. CEUR-WS, 2010.
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The scaffolding of a complete lattice L of finite length was introduced by Rudolf Wille in 1976 as a relative subsemilattice of L that can be constructed using subdirect decomposition. The lattice is uniquely defined by its scaffolding and can be reconstructed from it. Using bonds, we demonstrate how the scaffolding can be constructed from a given formal context and thereby extend the notion of the scaffolding to doubly founded lattices. Further, we explain the creation of a suitable graphical representation of the scaffolding from the context.
Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity.Körner, Christian; Benz, Dominik; Strohmaier, Markus; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 19th International World Wide Web Conference (WWW 2010). ACM, Raleigh, NC, USA, 2010.
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Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise”, and (iii) in learning ontologies.
Open Innovation im Healthcare - Systematische Entwicklung von Ideenwettbewerben am Beispiel von Patienten mit amyotropher Lateralsklerose.Hartmann, M.; Prinz, A.; Leimeister, J. M. In 40. Jahrestagung der Gesellschaft für Informatik: Service Science – neue Perspektiven für die Informatik. Leipzig, Germany, 2010.
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CAR-2-X and Pedestrian Safety: Innovative Collision Avoidance System.David, Klaus; Flach, Alexander. In IEEE Vehicular Technology Magazine, 5(1), pp. 70–76. 2010.
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Traffic accidents involving pedestrians or cyclists cause thousands of fatalities and serious injuries every year. In this article, we present an innovative approach for a collision avoidance system that seeks to reduce these accidents. We also discuss the different architectural approaches utilizing ad hoc and/or cellular technologies and different processing setups and present a physical analysis of the system time available between detection, warning, and reaction to give an overview of the time constraint.
Proceedings of the 2010 Workshop on Mining Ubiquitous and Social Environments (MUSE 2010). Atzmueller, Martin; Hotho, Andreas. ECML/PKDD 2010, Barcelona, Spain, 2010.
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Netzwelt: Werte, Wege, Wandel. Klumpp, D.; Kubicek, H.; Roßnagel, A.; Schulz, W. Springer, 2010.
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2009[ to top ]

Modeling of Context-Aware Self-Adaptive Applications in Ubiquitous and Service-Oriented Environments.Geihs, Kurt; Reichle, Roland; Wagner, Michael; Khan, Mohammad Ullah. In Software Engineering for Self-Adaptive Systems, B. H. Cheng, R. de Lemos, H. Giese, P. Inverardi, J. Magee (eds.). Springer, 2009.
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Wahrgenommener Wert von IT in Krankenhäusern - Eine empirische Studie.Fähling, Jens; Köbler, Felix; Leimeister, Jan Marco; Krcmar, Helmut. In Proceedings of Wirtschaftsinformatik, Vol. 9. Wien, Austria, 2009.
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Einsatz von IT für neue und optimierte medizinische Abläufe steht im großen Zusammenhang mit der Wahrnehmung des Wertbeitrags in deutschen Krankenhäusern.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In 54. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (GMDS). Essen, Germany, 2009.
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Breitbandkommunikation.Leimeister, J. M.; Berkovich, M. In Online-Lexikon der Wirtschaftsinformatik, J. Becker, N. Gronau, K. Kurbel, E. Sinz, L. Suhl (eds.). Oldenbourg, 2009.
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Automated Integration of Web Services in BPEL4WS Processes.Bleul, Steffen; Geihs, Kurt; Comes, Diana; Kirchhoff, Marc. In 16. Fachtagung Kommunikation in Verteilten Systemen, KiVS 2009, Kassel. VDE, Kassel, Germany, 2009.
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Collaborative Filtering in Ideenwettbewerben - Evaluation zweier Skalen zur Teilnehmer-Bewertung in Ideenwettbewerben.Blohm, I.; Bretschneider, U.; Huber, J. M.; Leimeister, J. M.; Krcmar, H. In GeNeMe 2009 - Gemeinschaften in neuen Medien: Virtual Enterprises, Communities & Social Networks, M. Engelien, J. Homann (eds.), pp. 365–378. Joseph Eul Verlag, Dresden, Germany, 2009.
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Einsatz von IT für neue und optimierte medizinische Abläufe und Wahrnehmung des IT-Wertbeitrags in deutschen Krankenhäusern.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In Proceedings of 54. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (GMDS). Essen, Germany, 2009.
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Corporate added value in the context of Web 2.0.Bohl, O.; Manouchehri, S. In Handbook of Research on Social Interaction Technologies and Collaboration Software: Concepts and Trends, T. Dumova, R. Fiordo (eds.). Hershey, USA, 2009.
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Managing an IT carve-out at a multi-national enterprise.Fähling, J.; Leimeister, J. M.; Yetton, P.; Krcmar, H. In European Conference on Information Systems (ECIS). Verona, Italy, 2009.
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Leveraging Crowdsourcing: Activation-Supporting components for IT-based ideas competition.Leimeister, J. M.; Huber, M.; Bretschneider, U.; Krcmar, H. In Journal of Management Information Systems (JMIS), 26(1), pp. 197–224. 2009.
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Service-Oriented Adaptation in Ubiquitous Computing Environments.Geihs, Kurt; Reichle, Roland; Wagner, Michael; Khan, Mohammad Ullah. In CSE (2), pp. 458–463. IEEE Computer Society, 2009.
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A cross-national comparison of perceived strategic importance of RFID for CIOs in Germany and Italy.Leimeister, S.; Leimeister, J. M.; Knebel, U.; Krcmar, H. In International Journal of Information Management, (29), pp. 37–47. 2009.
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Health care 2.0: The use of Web 2.0 in health care.Manouchehri, S.; Winand, U. In Handbook of Research on Web 2.0, 3.0 and X.0: Technologies, Business and Social Applications, S. Murugesan (ed.). IGI Global, Hershey, USA, 2009.
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Hybrid Value Creation in the sports industry - the case of the mobile sports companion.Leimeister, J. M.; Knebel, U.; Krcmar, H. In International Journal of Information Systems in the Service Sector (IJISSS), pp. 11–25. 2009.
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Sound design for auditory guidance in aircraft cockpits.Borys, Bernd-Burkhard. In Human Factors: Security and Safety, D. de Waard, J. H. Godthelp, F. L. Kooi, K. A. Brookhuis (eds.), pp. 113–121. Shaker Publishing, Maastricht, 2009.
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Auditory information from the situation around us, available in open nature is lost in vehicles. To maintain the three-dimensional picture and situational awareness, pilots in an aircraft cockpit need to interpret two-dimensional data provided on flat screens. The visual information prevails; the auditory channel is used mainly for alerting or getting attention. In an ongoing research project we evaluate means to provide information using audio signals. For these audio signals, carrying information about state, direction, and amount of deviation explicit sound design is essential. Even when using voice commands, where the information is put into the words chosen, parameters exist that can support or oppose to this semantic information, like pitch (low to relax, high to alert), personality (robotic for regular automatic updates, human for unexpected trustworthy information). The paper shows, how an existing flight instrument is mapped to an audio display and what principles from psychology and music are applied to sound design.
TeleMediaR - Telekommunikations- und Multimediarecht, dtv-Textsammlung mit einer Einführung. Geppert, M.; Roßnagel, A. achte, . 2009.
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Mobil50+ - Innovative NFC- und IT-basierte Dienstleistungen für mobiles Leben und Aktivität mit 50+.Koene, P.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In Mensch & Computer 2009, H. Wandke, S. Kain, D. Struve (eds.). Berlin, Germany, 2009.
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Online, Set, Go - Design and empirical test of an IT-based physical activity intervention.Knebel, U.; Esch, S.; Pressler, A.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS). Verona, Italy, 2009.
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Gedruckte Polymer-RFID-Transponder: Erste Erfahrungen und Erkenntnisse aus dem Forschungsprojekt PRISMA. Leimeister, J. M.; Krcmar, H. Eul-Verlag, ISBN: 978-3899367621, Lohmar, Germany, 2009.
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Evaluating Similarity Measures for Emergent Semantics of Social Tagging.Markines, Benjamin; Cattuto, Ciro; Menczer, Filippo; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In 18th International World Wide Web Conference, pp. 641–641. 2009.
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Social bookmarking systems and their emergent information structures, known as folksonomies, are increasingly important data sources for Semantic Web applications. A key question for harvesting semantics from these systems is how to extend and adapt traditional notions of similarity to folksonomies, and which measures are best suited for applications such as navigation support, semantic search, and ontology learning. Here we build an evaluation framework to compare various general folksonomy-based similarity measures derived from established information-theoretic, statistical, and practical measures. Our framework deals generally and symmetrically with users, tags, and resources. For evaluation purposes we focus on similarity among tags and resources, considering different ways to aggregate annotations across users. After comparing how tag similarity measures predict user-created tag relations, we provide an external grounding by user-validated semantic proxies based on WordNet and the Open Directory. We also investigate the issue of scalability. We ?nd that mutual information with distributional micro-aggregation across users yields the highest accuracy, but is not scalable; per-user projection with collaborative aggregation provides the best scalable approach via incremental computations. The results are consistent across resource and tag similarity.
Kundenintegration in die Innovationsprozesse bei hybriden Produkten - Eine Bestandsaufnahme.Hoffman, H.; Fähling, J.; Leimeister, J. M.; Krcmar, H. In Informatik 2009 - Im Focus das Leben. GI - Gesellschaft für Informatik, GI Lecture Notes in Informatics, Lübeck, Germany, 2009.
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Wahrnehmung des Wertbeitrags von Informationstechnologie in deutschen Krankenhäusern.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In Krankenhaus-IT-Journal, (1), pp. 34–36. 2009.
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Medizinische Software im Kontext des Medizinproduktegesetzes.Mauro, C.; Sunyaev, A.; Dünnebeil, S.; Leimeister, J. M.; Krcmar, H. In Informatik 2009 - Im Focus das Leben. GI - Gesellschaft für Informatik, GI Lecture Notes, Lübeck, Germany, 2009.
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How German hospitals govern IT - An empirical study.Köbler, F.; Fähling, J.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS). Verona, Italy, 2009.
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Self-adaptation for Deployment Decision Making.Kusber, Rico; Brgulja, Nermin; David, Klaus. In Proceedings of the International Conference on Intelligent Interactive Assistance and Mobile Multimedia Computing, Vol. 53 of Communications in Computer and Information Science, D. Tavangarian, T. Kirste, D. Timmermann, U. Lucke, D. Versick (eds.), pp. 339–340. Springer Berlin Heidelberg, Berlin, Heidelberg, 2009.
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In this paper we present an intelligent assistant for deploying services and obtaining content in distributed computing network. We focus on how self-adaptation is achieved and illustrate the capabilities and limits of self-adaptation within our approach with the help of provider reputation values.
Konzeption patientenzentrierter Mehrwertdienste für die Deutsche Gesundheitstelematik.Dünnebeil, S.; Sunyaev, A.; Mauro, C.; Leimeister, J. M.; Krcmar, H. In 54. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (GMDS) 2009. Essen, Germany, 2009.
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Integration of patient health portals into the German healthcare telematics infrastructure.Dünnebeil, S.; Mauro, C.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In 15. Americas Conference on Information Systems (AMCIS) 2009. San Francisco, USA, 2009.
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Measuring the Probability of Correctness of Contextual Information in Context Aware Systems.Brgulja, Nermin; Kusber, Rico; David, Klaus; Baumgarten, Matthias. In 8th IEEE International Conference on Dependable, Autonomic and Secure Computing, of DASC ’09, pp. 246–253. IEEE, Chengdu, China, 2009.
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Context-awareness refers to computing systems that are able to sense and to comprehend their environment in order to adapt themselves in dependence to the available and relevant contextual information they depend upon. Gathering such contextual information involves real world entities such as sensors, which, for various reasons, are often prone to certain degrees of uncertainty and inaccuracy. Nevertheless, high quality context information plays a vital role in ensuring correct system behavior as well as dynamic system and service adaptation. Thus, a set of indicators is required which allows determining the quality of contextual information, which is commonly known as quality of context (QoC). One of the most relevant parameter of the QoC is the probability of correctness (PoC), which expresses the level of confidence, that the contextual information sensed, are in fact correct or not. In this paper, we propose an approach for measuring the PoC of context information by firstly analyzing the nature of context information and, secondly, revisiting the concept of quality of context also discussing other QoC parameters. Finally, we present a novel approach for quantifying the PoC for specific context information and evaluate the proposed method on a concrete case study.
Value Mapping - Wertorientierte Steuerung von IT-Landschaften.Lanzinner, S.; Leimeister, J. M.; Krcmar, H. In HMD - Praxis der Wirtschaftsinformatik, Vol. 45, pp. 34–41. dpunkt, München, Germany, 2009.
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Value Mapping - Entwicklung eines Ansatz zur wertorientierten Steuerung von IT-Landschaften.Lanzinner, S.; Leimeister, J. M.; Krcmar, H. Lehrstuhl für Wirtschaftsinformatik, Technische Universität München, München, Germany, 2009.
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Analysis of value creation by product-service-systems in the German medical engineering industry.Köbler, F.; Fähling, J.; Vattai, A.; Leimeister, J. M. In 1. International Symposium of Service Sciences 2009 (ISSS) 2009, R. Alt, K. P. Fähnrich, B. Franczyk (eds.). Berlin, Germany, 2009.
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Analysis of value creation through Product-Service-Systems in the German medical engineering industry.Köbler, F.; Fähling, J.; Vattai, A.; Leimeister, J. M.; Krcmar, H. In 1. International Symposiumon Services Science (ISSS) 2009, Vol. 1, R. Alt, K. P. Fähnrich, B. Franczyk (eds.), pp. 257–269. Logos, Leipzig, Germany, 2009.
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Non-optimized temporal structures as a failure factor in virtual teams.Köbler, F.; Tremaine, M.; Leimeister, J. M.; Krcmar, H. In Proceedings of Wirtschaftsinformatik. Wien, Austria, 2009.
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Click-Work: eine Form post-sozialer Verdinglichung. Fallstudie zu den Dispositionen unmotivierter Internetnutzung.Lamla, Jörn; Witterhold, Katharina. In Sozialwissenschaften und Berufspraxis, 32(2), pp. 240–249. 2009.
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Brain-Computer-Interface: Von der Spielesteuerung zur Mensch-Computer-Interaktion?Domhardt, M.; Schmidt, L. In Arbeit, Beschäftigungsfähigkeit und Produktivität im 21. Jahrhundert: 55. Kongress der Gesellschaft für Arbeitswissenschaft (Dortmund 2009), Gesellschaft für Arbeitswissenschaft e. V. (ed.), pp. 105–108. GfA-Press, Dortmund, 2009.
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Neuartige Spielesteuerungen, die auf dem Prinzip eines Brain-Computer Interface basieren, können möglicherweise auch für andere Computeranwendungen sinnvoll genutzt werden. Der Beitrag stellt ein solches Eingabegerät und die Ergebnisse eines ersten Usabilitytests vor.
Context inference of users´ social relationships and distributed policy management.Devlic, Alisa; Reichle, Roland; Wagner, Michal; Pinheiro, Manuele Kirsch; Vanrompay, Yves; Berbers, Yolande; Valla, Massimo. In 6th IEEE Workshop on Context Modeling and Reasoning (CoMoRea) at the 7th IEEE International Conference on Pervasive Computing and Communication (PerCom’09). 2009.
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Adaptability of a Deployment Decision Making System.Kusber, Rico; Brgulja, Nermin; David, Klaus. In Computation World: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, of COMPUTATIONWORLD ’09, pp. 27–32. IEEE, Athens, Greece, 2009.
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In our living environments today, computer networks, computing devices, sensors and many other entities produce a large amount of data to be processed. This data comprise, for example, digital media content, news, computational resources like services, and much more. To be able to exploit this data, a (human or computer) user may utilize digital assistants. In this paper, we present such an assistant for deploying services and obtaining content data. We concentrate especially on how this assistant is able to adapt to changing situations, both, user-driven and in a self-adaptive manner. An experimental evaluation, based on real world digital video providers, demonstrates prerequisites, results, and potential of the various ways of adaptation within the presented approach.
Implementation of a User-Centric Context-Aware Playground.Lau, Sian Lun; Klein, Niklas; Pirali, Andreas; König, Immanuel; David, Klaus. In Workshops der Wissenschaftlichen Konferenz Kommunikation in Verteilten Systemen 2009 (WowKiVS 2009), Vol. 17. Electronic Communications of the EASST, 2009.
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Parameter Selection for Autonomic Deployment Decision Making.Kusber, Rico; David, Klaus; Brgulja, Nermin. In 2009 IEEE Globecom Workshops, pp. 1–6. IEEE, Honolulu, Hawaii, 2009.
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Today's computing networks are built to have a very high degree of heterogeneity, complexity, and interrelation. To be able to interact efficiently with those networks, scientists and computing system developers equip soft- and hardware with the ability to solve subtasks in an autonomic fashion. Especially with regard to easily accessible, content-rich, and increasingly pervasive networks, the question arises how best to select among multiple alternatives to deploy services or to obtain data in an efficient and preferably autonomic way. In this paper we address this question and present a deployment decision making (DDM) system accordingly. In particular, we concentrate on the performance-optimizing effects of selecting parameters and parameter subsets for the decision making process. These effects are deduced analytically and illustrated by an experimental evaluation.
Managing publications and bookmarks with BibSonomy.Benz, Dominik; Eisterlehner, Folke; Hotho, Andreas; Jäschke, Robert; Krause, Beate; Stumme, Gerd. In HT ’09: Proceedings of the 20th ACM Conference on Hypertext and Hypermedia, C. Cattuto, G. Ruffo, F. Menczer (eds.), pp. 323–324. ACM, New York, NY, USA, 2009.
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In this demo we present BibSonomy, a social bookmark and publication sharing system.
Social Bookmarking am Beispiel BibSonomy.Hotho, Andreas; Jäschke, Robert; Benz, Dominik; Grahl, Miranda; Krause, Beate; Schmitz, Christoph; Stumme, Gerd. In Social Semantic Web, A. Blumauer, T. Pellegrini (eds.), pp. 363–391. Springer, Berlin, Heidelberg, 2009.
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BibSonomy ist ein kooperatives Verschlagwortungssystem (Social Bookmarking System), betrieben vom Fachgebiet Wissensverarbeitung der Universität Kassel. Es erlaubt das Speichern und Organisieren von Web-Lesezeichen und Metadaten für wissenschaftlichePublikationen. In diesem Beitrag beschreiben wir die von BibSonomy bereitgestellte Funktionalität, die dahinter stehende Architektursowie das zugrunde liegende Datenmodell. Ferner erläutern wir Anwendungsbeispiele und gehen auf Methoden zur Analyse der in BibSonomy und ähnlichen Systemen enthaltenen Daten ein.
Software Engineering for Self-Adaptive Systems: A Research Roadmap.Cheng, Betty H. C.; de Lemos, Rogério; Giese, Holger; Inverardi, Paola; Magee, Jeff; Andersson, Jesper; Becker, Basil; Bencomo, Nelly; Brun, Yuriy; Cukic, Bojan; Serugendo, Giovanna Di Marzo; Dustdar, Schahram; Finkelstein, Anthony; Gacek, Cristina; Geihs, Kurt; Grassi, Vincenzo; Karsai, Gabor; Kienle, Holger M.; Kramer, Jeff; Litoiu, Marin; Malek, Sam; Mirandola, Raffaela; Müller, Hausi A.; Park, Sooyong; Shaw, Mary; Tichy, Matthias; Tivoli, Massimo; Weyns, Danny; Whittle, Jon. In Software Engineering for Self-Adaptive Systems, Vol. 5525 of Lecture Notes in Computer Science, B. H. C. Cheng, R. de Lemos, H. Giese, P. Inverardi, J. Magee (eds.), pp. 1–26. Springer, 2009.
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Characterizing Semantic Relatedness of Search Query Terms.Benz, Dominik; Krause, Beate; Kumar, G. Praveen; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 1st Workshop on Explorative Analytics of Information Networks (EIN2009). Bled, Slovenia, 2009.
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A Flexible Approach for Business Processes Monitoring.Comes, Diana; Bleul, Steffen; Weise, Thomas; Geihs, Kurt. In Proceedings of the International Symposium (on) Distributed Computing Techniques (DisCoTec), 9th IFIP international conference on Distributed Applications and Interoperable Systems, DAIS 2009, Vol. 5523/2009 of Lecture Notes in Computer Science (LNCS), subseries SL 6 -- Image Processing, Computer Vision, Pattern Recognition, and Graphics, R. Oliveira, T. Senivongse (eds.), pp. 116–128. Springer Verlag, Lisbon, Portugal, 2009.
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Business processes and their implementation as Web Service Compositions are not only dependent on Web Services and partners all over the Internet, but also on their failsafe execution. Service providers have to obligate their services to perform according to negotiated Quality of Service (QoS) parameters. For example, response time and throughput are important parameters to achieve fast and efficient services. Overloaded or failing services may compromise the reliability and execution of whole enterprise processes. In this paper we introduce a flexible monitoring approach for the measurement of QoS in BPEL (Business Process Execution Language) processes. We propose a generic algorithm for QoS aggregation in BPEL processes. The novel generic aggregation algorithm applies customized aggregation functions for QoS dimensions. Furthermore, we present a BPEL monitoring system which supports ad-hoc sensor deployment and efficient runtime and offline data aggregation not only for whole process descriptions but also sections inside service processes.
Management of Business Processes with the BPRules Language in Service Oriented Computing.Comes, Diana; Bleul, Steffen; Zapf, Michael. In Workshops der Wissenschaftlichen Konferenz Kommunikation in Verteilten Systemen (WowKiVS) 2009, Kassel. VDE, Kassel, Germany, 2009.
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Requirements engineering for hybrid products as bundles of hardware, software and service elements - a literature review.Berkovich, M.; Esch, S.; Leimeister, J. M.; Krcmar, H. In Proceedings of Wirtschaftsinformatik. Wien, Austria, 2009.
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Soziale Netze in der digitalen Welt. Das Internet zwischen egalitärer Teilhabe und ökonomischer Macht. Bieber, Christoph; Eifert, Martin; Groß, Thomas; Lamla, Jörn. Campus, Frankfurt/ New York, 2009.
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Suitability of product development methods for hybrid products as bundles of classic products, software and service elements.Berkovich, M.; Leimeister, J. M.; Krcmar, H. In ASME 2009 - International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE. San Diego, USA, 2009.
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An empirical exploration of requirements engineering for hybrid products.Berkovich, M.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS). Verona, Italy, 2009.
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Making innovation happen: Tool-support for software related communities for innovations.Huber, M. J.; Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In International Reports on Socio-Informatics - Open Design Spaces Supporting User Innovation. International Workshop on Open Design Spaces (ODS) 2009, V. Pipek, M. Rohde (eds.). Bonn, Germany, 2009.
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Towards a pattern based approach for designing virtual communities for innovations.Huber, M.; Leimeister, J. M.; Krcmar, H. In Mensch und Computer 2009. Berlin, Germany, 2009.
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Community Engineering for Innovations - The Ideas Competition as a method to nurture a Virtual Community for Innovations.Ebner, W.; Leimeister, J. M.; Krcmar, H. In R & D Management, Vol. 39, pp. 342–356. 2009.
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A Physical Analysis of an Accident Scenario between Cars and Pedestrians.Flach, Alexander; David, Klaus. In 2009 IEEE 70th Vehicular Technology Conference Fall (VTC-Fall), pp. 1–5. IEEE, Anchorage, AK, USA, 2009.
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Every year still thousands of people are injured or killed in accidents with cars, trucks and busses. Many of these people are pedestrians or cyclists. Several research groups work on solutions to avoid accidents between cars and pedestrians with the help of different technologies. In this paper we present an innovative approach for a collision avoidance system which should be able to tackle these accidents. To understand the potential of this approach, we will present a physical analysis of the system time available between detection, warning and reaction. We also discuss different architectures of our approach utilizing ad-hoc and/or cellular technologies. Additionally, we present experimental results of connection establishment and ping response times of these wireless technologies.
Wahrgenommener Wert von IT in deutschen Krankenhäusern - Eine empirische Untersuchung unter kaufmännischen, medizinischen und IT-Leitern. Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. BoD Verlag, Norderstedt, Germany, 2009.
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Wahrnehmung des Wertbeitrags von Informationstechnologie in Deutschen Krankenhäusern - Eine empirische Studie.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In 9. Internationale Tagung Wirtschaftsinformatik, Vol. 9, H. R. Hansen, D. Karagiannis, H. G. Fill (eds.), pp. 709–718. Österreichische Computer Gesellschaft, Wien, Austria, 2009.
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3rd Workshop on Information Systems and Services Sciences 2009.Krcmar, H.; Leimeister, J. M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2009.
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IT-basierte, gemeinschaftsgestützte Innovationsentwicklung für Softwareunternehmen.Leimeister, J. M. D. Spath (ed.). Fraunhofer-Verlag, Stuttgart, Germany, 2009.
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Motivation for Participation in Ideas Competitions: Empirical Insights from the SAPiens Case.Bretschneider, U. In Very Large Business Applications (VLBA), H. K. Arndt, H. Krcmar (eds.), pp. 124–138. Shaker Verlag, Aachen, Germany, 2009.
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Soziale Verbrauchervernetzung – Neue Spannungslinien im kulturel-len Kapitalismus?Lamla, Jörn. In Soziale Netze in der digitalen Welt. Das Internet zwischen egalitärer Teilhabe und ökonomischer Macht, C. Bieber, M. Eifert, T. Groß, J. Lamla (eds.), pp. 129–140. Campus, Frankfurt/ New York, 2009.
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Mobile Anwendungen im Kontext des Medizinproduktegesetzes.Mauro, C.; Sunyaev, A.; Dünnebeil, S.; Leimeister, J. M.; Krcmar, H. In Mobiles Computing in der Medizin - 9. Workshop der GI- und GMDS-Arbeitsgruppe Mobile Informationstechnologie in der Medizin, pp. 1–13. Lübeck, Germany, 2009.
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Entwurf, Implementierung und Test einer IT-Architektur für einen mobilen Gesundheitscoach - Das Beispiel Personal Health Manager.Esch, S.; Knebel, U.; Leimeister, J. M.; Krcmar, H. In Informatik 2009 - Im Focus das Leben. Lübeck, Germany, 2009.
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Serviceorientierte Integration medizinischer Geräte - Eine State-of-the-Art-Analyse.Mauro, C.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In 9. Internationale Tagung Wirtschaftsinformatik (WI2009). Wien, Austria, 2009.
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Methoden der Kundenintegration in den Innovationsprozess - Eine Bestandsaufnahme.Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Arbeitspapiere Nr. 34 des Lehrstuhls für Wirtschaftsinformatik, (34). Lehrstuhl für Wirtschaftsinformatik, Technische Universität München, München, Germany, 2009.
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RFID-Systeme für Messen und Konferenzen - Untersuchung der Einflussgrößen auf die Besucherakzeptanz.Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Proceedings of Mobilität und mobile Informationssysteme (MMS). Münster, Germany, 2009.
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Gedruckte RFID-Tags für die Durchführung von Messen und Konferenzen: Untersuchung der Einflussgrößen auf die Besucherakzeptanz.Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Gedruckte Polymer-RFID-Transponder: Erste Erfahrungen und Erkenntnisse aus dem Forschungsprojekt PRISMA, J. M. Leimeister, H. Krcmar (eds.), pp. 73–90. Eul Verlag, Lohmar, Germany, 2009.
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Wahrgenommener Wertbeitrag von IT in deutschen Krankenhäusern.Fähling, J.; Köbler, F.; Leimeister, J. M.; Krcmar, H. In Krankenhaus IT-Journal, Vol. 2009, pp. 34–36. 2009.
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4th Workshop on Information Systems and Services Sciences 2009.Krcmar, H.; Leimeister, J. M.; Leimeister, S.; Schermann, M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2009.
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2008[ to top ]

Exploring success factors for IT carve out projects.Leimeister, S.; Leimeister, J. M.; Fähling, J.; Krcmar, H. In European Conference on Information Systems (ECIS) 2008, Vol. 16. European Conference on Information Systems, Galway, Ireland, 2008.
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Vertrauensaspekte beim Einsatz von Social Software.Bohl, O.; Manouchehri, S. In Wissen, Vernetzung, Virtualisierung, H. F. O. von Kortzfleisch, O. Bohl (eds.), pp. 449–460. Eul Verlag, Lohmar/Köln, 2008.
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Automated Management of Dynamic Web Service Integration.Bleul, Steffen; Geihs, Kurt; Comes, Diana; Kirchhoff, Marc. In 15th Annual Workshop of HP Software University Association (HP-SUA), of 15th Annual Workshop of HP Software University Association (HP-SUA). Infonomics-Consulting, Stuttgart - Germany, Marrakech, Maroc, 2008.
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Alltagstauglichkeit im Kontext der Migration von Anwendungssystemen.Bohl, O.; Höfer, A.; Manouchehri, S.; Winand, U. In Multikonferenz Wirtschaftsinformatik, M. Bichler, T. Hess, H. Krcmar, U. Lechner, F. Matthes, A. Picot, B. Speitkamp, P. Wolf (eds.), pp. 3–4. Gito-Verlag, Berlin, 2008.
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Designing private e- and m-services.Bohl, O.; Manouchehri, S.; Winand, U. In International Journal of Knowledge Management Studies (IJKMS), Special Issue on Information Technology and Telecommunications Services - Knowledge, Technology and Organisational Changes, 2(1), P. O. Brehmer; H. Lindskog (eds.), pp. 64–79. 2008.
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Zentrale Verwaltung von Gesundheitskarten im stationären Krankenhausumfeld.Mauro, C.; Leimeister, J. M.; Sunyaev, A.; Krcmar, H. In Wirtschaftsinformatik, 50(6), pp. 489–499. Vieweg, 2008.
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Geminga: Service Discovery for Mobile Robotics.Baer, Philipp A.; Weise, Thomas; Geihs, Kurt. In The Third International Conference on Systems and Networks Communications. IEEE Computer Society Press, 2008.
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WSC-08: Continuing the Web Services Challenge. Basal, Anjay; Blake, M. Brian; Kona, Srividya; Bleul, Steffen; Weise, Thomas; Jaeger, Michael C. In of IEEE Joint Conference (CEC/EEE 2008) on E-Commerce Technology (Tenth CEC’07) and Enterprise Computing, E-Commerce and E-Services (Fifth EEE’08). IEEE, Washington D.C., USA, 2008.
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Ordnungsrahmen für die hybride Wertschöpfung.Becker, J.; Beverungen, D.; Knackstedt, R.; Glauner, C.; Stypmann, M.; Rosenkranz, C.; Schmitt, R.; Hatfield, S.; Schmitz, G.; Eberhardt, S.; Dietz, M.; Thomas, O.; Walter, P.; Lönngren, H. M.; Leimeister, J. M. In Dienstleistungsmodellierung – Methoden, Werkzeuge und Branchenlösungen, O. Thomas, M. Nüttgens (eds.), pp. 109–128. Physica, Berlin, Heidelberg, 2008.
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Analyzing Tag Semantics Across Collaborative Tagging Systems.Benz, Dominik; Grobelnik, Marko; Hotho, Andreas; Jäschke, Robert; Mladenic, Dunja; Servedio, Vito D. P.; Sizov, Sergej; Szomszor, Martin. In Proceedings of the Dagstuhl Seminar on Social Web Communities, H. Alani, S. Staab, G. Stumme (eds.). 2008.
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The objective of our group was to exploit state-of-the-art Information Retrieval methods for finding associations and dependencies between tags, capturing and representing differences in tagging behavior and vocabulary of various folksonomies, with the overall aim to better understand the semantics of tags and the tagging process. Therefore we analyze the semantic content of tags in the Flickr and Delicious folksonomies. We find that: tag context similarity leads to meaningful results in Flickr, despite its narrow folksonomy character; the comparison of tags across Flickr and Delicious shows little semantic overlap, being tags in Flickr associated more to visual aspects rather than technological as it seems to be in Delicious; there are regions in the tag-tag space, provided with the cosine similarity metric, that are characterized by high density; the order of tags inside a post has a semantic relevance.
Proceedings of the Dagstuhl Seminar on Social Web Communities. Alani, Harith; Staab, Steffen; Stumme, Gerd. Schloss Dagstuhl, 2008.
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The Spica Development Framework -- Model-Driven Software Development for Autonomous Mobile Robots.Baer, Philipp A.; Reichle, Roland; Geihs, Kurt. In Intelligent Autonomous Systems 10 -- IAS-10, W. Burgard, R. Dillmann, C. Plagemann, N. Vahrenkamp (eds.), pp. 211–220. 2008.
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Robot Control Architectures -- Another Tower of Babel?Baer, Philipp A.; Geihs, Kurt. In Microsoft Technical Summit, Microsoft Academic Days 2008. 2008.
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Platform-Independent Development of Robot Communication Software. Technical Report (PhD dissertation), . Baer, Philipp A. PhD dissertation. University of Kassel, Germany, 2008, September.
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Erfolgsfaktoren für die systematische Durchführung von IT Carve Outs - Eine explorative Untersuchung.Leimeister, S.; Leimeister, J. M.; Krcmar, H. In Proceedings of Multikonferenz Wirtschaftsinformatik (MKWI), pp. 627–638. Gito, München, 2008.
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Evaluation Strategies for Learning Algorithms of Hierarchical Structures.Bade, Korinna; Benz, Dominik. In Proceedings of the 32nd Annual Conference of the German Classification Society - Advances in Data Analysis, Data Handling and Business Intelligence (GfKl 2008), of Studies in Classification, Data Analysis, and Knowledge Organization. Springer, Berlin-Heidelberg, 2008.
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Several learning tasks comprise hierarchies. Comparison with a "goldstandard" is often performed to evaluate the quality of a learned hierarchy. We assembled various similarity metrics that have been proposed in different disciplines and compared them in a unified interdisciplinary framework for hierarchical evaluation which is based on the distinction of three fundamental dimensions. Identifying deficiencies for measuring structural similarity, we suggest three new measures for this purpose, either extending existing ones or based on new ideas. Experiments with an artificial dataset were performed to compare the different measures. As shown by our results, the measures vary greatly in their properties.
Self-Integration of Web Services in BPEL Processes. Bleul, Steffen; Comes, Diana; Kirchhoff, Marc; Zapf, Michael. University of Kassel, 2008.
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A proposed solution for managing doctor’s smart cards in hospitals using a single sign-on central architecture.Mauro, C.; Sunyaev, A.; Leimeister, J. M.; Schweiger, A.; Krcmar, H. In Hawai’i International Conference on System Sciences (HICSS) 2008. Big Island, Hawaii, 2008.
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Berührungslose Augen- und Blickbewegungsmessung.Link, D.; Tietze, H.; Schmidt, L.; Sievert, A.; Gorges, W.; Leyk, D. In Ergonomie und Mensch-Maschine-Systeme, L. Schmidt, C. M. Schlick, J. Grosche (eds.), pp. 371–391. Springer, Berlin, 2008.
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Für die Untersuchung ergonomischer Fragestellungen bietet sich der Einsatz berührungsloser Blickerfassungssysteme an. Am FGAN Forschungsinstitut für Kommunikation, Informationsverarbeitung und Ergonomie wird zurzeit das System SmartEye Pro verwendet, um Kopfstellung, Blickrichtung und Bewegungen des Augenlides von Probanden in Echtzeit zu erfassen. In zwei Vorstudien wurden die Auswirkung verschiedener Kalibrierungseinstellungen auf die Trackingqualität und die Qualität der Messung von Sakkaden und Fixationen evaluiert. Es zeigte sich, dass das System geeignet ist, statistische Aussagen in Bezug auf Blickbewegungen und Lidschlussverhalten zu generieren. Jedoch ist die Bestimmung von Sakkaden- und Fixationsparametern nur eingeschränkt möglich. Unter Berücksichtigung dieser Restriktionen wird das System zurzeit in einem Verbundforschungsprojekt mit der Deutschen Sporthochschule Köln und dem Zentralen Institut des Sanitätsdienstes der Bundeswehr Koblenz zur Erfassung der psycho-physiologische Leistungsfähigkeit von Soldaten verwendet.
Grunddienste für die Rechtssicherheit elektronischer Kommunikation.? pp. 723–728. 2008.
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Leveraging the wisdom of crowds: Designing an IT-supported ideas competition for an ERP software company.Ebner, W.; Leimeister, J. M.; Bretschneider, U.; Krcmar, H. In Hawai’i International Conference on System Sciences (HICSS) 2008. Big Island, Hawaii, 2008.
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Ratgeber für die Veröffentlichung von Open-Source-Software durch eine Hochschule.Bretschneider, U.; Glaschick, R.; Gräfe, G. In Open Source: Kommerzialisierungsmöglichkeiten und Chancen für die Zusammenarbeit von Hochschulen und Unternehmen, M. Asche, W. Bauhaus, E. Mitschke, B. B. Seel (eds.), pp. 167–188. Waxmann, Münster, Germany, 2008.
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„Social Net“-Work. Freundschaft als digitale Werbefläche.Lamla, Jörn; Böttcher, Thies W. In polar. Zeitschrift für politische Philosophie und Kultur, (5), pp. 32–37. 2008.
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Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems.Cattuto, Ciro; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In Proceedings of the 3rd Workshop on Ontology Learning and Population (OLP3), pp. 39–43. Patras, Greece, 2008.
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Social bookmarking systems allow users to organise collections of resources on the Web in a collaborative fashion. The increasing popularity of these systems as well as first insights into their emergent semantics have made them relevant to disciplines like knowledge extraction and ontology learning. The problem of devising methods to measure the semantic relatedness between tags and characterizing it semantically is still largely open. Here we analyze three measures of tag relatedness: tag co-occurrence, cosine similarity of co-occurrence distributions, and FolkRank, an adaptation of the PageRank algorithm to folksonomies. Each measure is computed on tags from a large-scale dataset crawled from the social bookmarking system del.icio.us. To provide a semantic grounding of our findings, a connection to WordNet (a semantic lexicon for the English language) is established by mapping tags into synonym sets of WordNet, and applying there well-known metrics of semantic similarity. Our results clearly expose different characteristics of the selected measures of relatedness, making them applicable to different subtasks of knowledge extraction such as synonym detection or discovery of concept hierarchies.
Semantic Grounding of Tag Relatedness in Social Bookmarking Systems.Cattuto, Ciro; Benz, Dominik; Hotho, Andreas; Stumme, Gerd. In The Semantic Web -- ISWC 2008, Proc.Intl. Semantic Web Conference 2008, Vol. 5318 of LNAI, A. P. Sheth, S. Staab, M. Dean, M. Paolucci, D. Maynard, T. W. Finin, K. Thirunarayan (eds.), pp. 615–631. Springer, Heidelberg, 2008.
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Collaborative tagging systems have nowadays become important data sources for populating semantic web applications. For taskslike synonym detection and discovery of concept hierarchies, many researchers introduced measures of tag similarity. Eventhough most of these measures appear very natural, their design often seems to be rather ad hoc, and the underlying assumptionson the notion of similarity are not made explicit. A more systematic characterization and validation of tag similarity interms of formal representations of knowledge is still lacking. Here we address this issue and analyze several measures oftag similarity: Each measure is computed on data from the social bookmarking system del.icio.us and a semantic grounding isprovided by mapping pairs of similar tags in the folksonomy to pairs of synsets in Wordnet, where we use validated measuresof semantic distance to characterize the semantic relation between the mapped tags. This exposes important features of theinvestigated similarity measures and indicates which ones are better suited in the context of a given semantic application.
Toward IT Value Mapping - An Approach to Value-Based IT Management.Lanzinner, S.; Leimeister, J. M.; Krcmar, H. In Americas Conference on Information Systems (AMCIS) 2008. Toronto, Canada, 2008.
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Making Service Creation for (Almost) Everyone.Lau, Sian Lun; Klein, Niklas; Pirali, Andreas; Koenig, Immanuel; Droegehorn, Olaf; David, Klaus. In ICT-Mobile Summit 2008. Stockholm, 2008.
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Making Service Creation for (Almost) Everyone.Lau, Sian Lun; Klein, Niklas; Pirali, Andreas; König, Immanuel; Drögehorn, Olaf; David, Klaus. In ICT-MobileSummit, P. Cunningham, M. Cunningham (eds.), pp. 1–8. International Information Management Corporation, Stockholm, Sweden, 2008.
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The current computing and communication services are driven by various technologies. The creation of such services is however not an easy task. The different platforms lack of openness that simplifies interoperability. Service developments are still mainly technical oriented, where service creation tools are meant for serving and assisting the professional developers. Service creation is not seen as a task for the end users. In our projects we wish to enable service creation for the end users. This is achieved by introducing the concept of the technology agnostic approach into the process. We present the conceptual architecture and explain the idea that can provide a solution. Several tools were designed and implemented to prove that the concepts work. With the help of semantic service description, the end users can express their service wishes and create services using a graphical interface technology agnostically. The service platform will search for the desired service functionalities and execute them. The idea was implemented in two European projects and we have identified the next steps to improve the prototypes as well as the idea.
Community for innovations: Developing an integrated concept for open innovation.Bretschneider, U.; Huber, M.; Leimeister, J. M.; Krcmar, H. In International Federation for Information Processing (IFIP) 2008. Berlin, Germany, 2008.
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Aufbewahrung elektronischer Dokumente.Hackel, Siegfried; Roßnagel, Alexander. S. H. A. Roßnagel (ed.), pp. 199–207. 2008.
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Digitalfotos als Beweismittel.Knopp, Michael. M. Knopp (ed.), p. 156. 2008.
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Hybride Wertschöpfung in der Gesundheitswirtschaft.Leimeister, J. M. In Kumulative Habilitationsschrift, Technische Universität München. München, Germany, 2008.
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Gesundheitstelematik und elektronische Gesundheitskarte.Knaup, Petra; Mauro, Christian; Leimeister, Jan Marco; Winter, Alfred. In GI Jahrestagung, of LNI, H.-G. Hegering, A. Lehmann, H. J. Ohlbach, C. Scheideler (eds.). München, 2008.
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Virtual communities for innovations: Users’ requirements for the development of an academic SAP user group.Ebner, W.; Bretschneider, U.; Leimeister, J. M.; Krcmar, H. In Hawai’i International Conference on System Sciences (HICSS) 2008. Big Island, Hawaii, 2008.
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DAGR - DAG Based Context Reasoning: An Architecture for Context Aware Applications.Klein, Bernd Niklas; Lau, Sian Lun; Pirali, Andreas; Löffler, Tino; David, Klaus. In ASWN ’08: Proceedings of the 2008 Eighth International Workshop on Applications and Services in Wireless Networks, pp. 20–25. IEEE Computer Society, Washington, DC, USA, 2008.
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Architectural Constraints in the Model-Driven Development of Self-Adaptive Applications.Khan, Mohammad Ullah; Reichle, Roland; Geihs, Kurt. In IEEE Distributed Systems Online (DSOnline), 9(7), pp. 0807-o7001. 2008.
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Anforderungen an Werkzeuge zum Prototyping von Automotive Services.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In Multikonferenz Wirtschaftsinformatik (MKWI) 2008, M. Bichler, T. Hess, H. Krcmar, U. Lechner, F. Matthes, A. Picot, B. Speitkamp, P. Wolf (eds.). Gito, München, Germany, 2008.
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Besprechung von BGH, Beschluss vom 15.7.2008.Hornung, Gerrit. G. Hornung (ed.), pp. 668–669. 2008.
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Besprechung von LG München, Urteil vom 21.5.2008.Knopp, Michael. M. Knopp (ed.). 2008.
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Elektronische Transaktionen - Anforderungen des Datenschutzes bei der Umsetzung der Dienstleistungsrichtlinie.Knopp, Michael. M. Knopp (ed.), p. 518. 2008.
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Hybride Produkte - Einordnung und Herausforderungen für die Wirtschaftsinformatik.Leimeister, J. M.; Glauner, C. In Wirtschaftsinformatik, 50(3), Vieweg (ed.), pp. 248–251. 2008.
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A Comparison of Social Bookmarking with Traditional Search.Krause, Beate; Hotho, Andreas; Stumme, Gerd. In Advances in Information Retrieval, 30th European Conference on IR Research, ECIR 2008, Vol. 4956 of LNAI, C. Macdonald, I. Ounis, V. Plachouras, I. Ruthven, R. W. White (eds.), pp. 101–113. Springer, Heidelberg, 2008.
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Social bookmarking systems allow users to store links to internet resources on a web page. As social bookmarking systems are growing in popularity, search algorithms have been developed that transfer the idea of link-based rankings in the Web to a social bookmarking system’s data structure. These rankings differ from traditional search engine rankings in that they incorporate the rating of users. In this study, we compare search in social bookmarking systems with traditionalWeb search. In the first part, we compare the user activity and behaviour in both kinds of systems, as well as the overlap of the underlying sets of URLs. In the second part,we compare graph-based and vector space rankings for social bookmarking systems with commercial search engine rankings. Our experiments are performed on data of the social bookmarking system Del.icio.us and on rankings and log data from Google, MSN, and AOL. We will show that part of the difference between the systems is due to different behaviour (e. g., the concatenation of multi-word lexems to single terms in Del.icio.us), and that real-world events may trigger similar behaviour in both kinds of systems. We will also show that a graph-based ranking approach on folksonomies yields results that are closer to the rankings of the commercial search engines than vector space retrieval, and that the correlation is high in particular for the domains that are well covered by the social bookmarking system.
Service creation for end-users.Droegehorn, Olaf; Lau, Sian Lun; Klein, Niklas; Koenig, Immanuel; Porras, Jari. In Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on, pp. 1–5. 2008.
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The current computing and communication services are driven by various technologies. The creation of such services is however not an easy task. The different platforms lack openness that simplifies interoperability. Service development is still mainly technical oriented, where service creation tools are meant for serving and assisting the professional developers. Service creation is not seen as a task for end users right now. In this paper we will discuss how end users could be enabled to create new services, shown on the example within a mobile context-aware service platform. This is achieved by introducing the concept of the technology agnostic approach into the process. We present the conceptual architecture and explain the idea of end-user driven service creation that can provide a solution. Several tools were designed and implemented to prove that the concepts work. With the help of semantic service description, the end users can express their service wishes and create services using a graphical interface technology agnostically. The idea was implemented in two European projects and we have identified the next steps to improve the prototypes as well as the idea. Based on several tools and an underlying platform the ideas have been tested in a development environment for mobile context-aware services. Here end-users are able to design their own services or combine existing services, which can be shared and used by other users later on.
Workshop on Information Systems and Services Sciences 2008.Krcmar, H.; Böhmann, T.; Leimeister, J. M.; Wolf, P.; Wittges, H. In Studien des Lehrstuhls für Wirtschaftsinformatik Technische Universität München. 2008.
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An Approach to Autonomic Deployment Decision Making.Kusber, Rico; Haseloff, Sandra; David, Klaus. In Proceedings of the Third International Workshop on Self-Organizing Systems, pp. 121–132. Springer International Publishing, Berlin, Heidelberg, Germany, 2008.
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Adding autonomicity to computing systems seems to be a promising way to deal with the problem of increasing system complexity. One step along the way to self-managing computing systems – especially with regard to distributed, modularized, service based environments – is to solve the problem of how to autonomically decide in a most useful and resource efficient way which alternative to choose in order to deploy a service. Deploying a service means, to either copy or move it from a source to a destination device or to use it remotely. In this paper we motivate the domain of autonomic service deployment and present an approach for deployment decision making (DDM). We explain all steps of the deployment decision making process and assemble them into an algorithm accordingly. Furthermore, we define all necessary components of DDM and enumerate a set of research questions which we address in order to fully explore the concerned domain. An experiment illustrates the potential of the presented approach.
Towards Autonomic Deployment Decision Making.Kusber, Rico; Haseloff, Sandra; David, Klaus. In Proceedings of the IADIS Multi Conference on Computer Science and Information Systems - Intelligent Systems and Agents, of MCCSIS’08, pp. 188–192. IADIS Press, Amsterdam, The Netherlands, 2008.
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In order to overcome the problem of rapidly increasing computer system complexity, scientists and developers equip systems and applications with autonomic behavior. A number of research fields have been investigated to find out how autonomicity for computing systems can be created. In this paper we elaborate the domain of making a decision on deploying a service on a device, where deployment can be copying or moving a service from a source to a target device or to access the service remotely. We present an approach for deployment decision making (DDM) which is capable of selecting the one deployment alternative out of many that has maximal usefulness according to a set of defined user preferences. Within that scope, we define an appropriate terminology, describe a music download scenario, and evaluate experimentations we have done on that.
2nd Workshop on Information Systems and Services Sciences 2008.Krcmar, H.; Böhmann, T.; Leimeister, J M.; Wolf, P.; Wittges, H. In Studien Lehrstuhl für Wirtschaftsinformatik Technische Universität München. 2008.
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The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems.Krause, Beate; Schmitz, Christoph; Hotho, Andreas; Stumme, Gerd. In Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web. 2008.
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Logsonomy - Social Information Retrieval with Logdata.Krause, Beate; Jäschke, Robert; Hotho, Andreas; Stumme, Gerd. In HT ’08: Proceedings of the Nineteenth ACM Conference on Hypertext and Hypermedia, pp. 157–166. ACM, Pittsburgh, PA, USA, 2008.
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Social bookmarking systems constitute an established part of the Web 2.0. In such systems users describe bookmarks by keywords called tags. The structure behind these social systems, called folksonomies, can be viewed as a tripartite hypergraph of user, tag and resource nodes. This underlying network shows specific structural properties that explain its growth and the possibility of serendipitous exploration. Today’s search engines represent the gateway to retrieve information from the World Wide Web. Short queries typically consisting of two to three words describe a user’s information need. In response to the displayed results of the search engine, users click on the links of the result page as they expect the answer to be of relevance. This clickdata can be represented as a folksonomy in which queries are descriptions of clicked URLs. The resulting network structure, which we will term logsonomy is very similar to the one of folksonomies. In order to find out about its properties, we analyze the topological characteristics of the tripartite hypergraph of queries, users and bookmarks on a large snapshot of del.icio.us and on query logs of two large search engines. All of the three datasets show small world properties. The tagging behavior of users, which is explained by preferential attachment of the tags in social bookmark systems, is reflected in the distribution of single query words in search engines. We can conclude that the clicking behaviour of search engine users based on the displayed search results and the tagging behaviour of social bookmarking users is driven by similar dynamics.
Der digitale Basar.Lamla, Jörn. In Abenteuer Feldforschung. Soziologen erzählen, P. Imbusch, F. Sutterlüty (eds.), pp. 149–161. Campus, Frankfurt/ New York, 2008.
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Long-term retention in e-voting – Legal requirements and technical implementation, in: Krimmer, R./Grimm.Gitter, Rotraud. R. Gitter (ed.). 2008.
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Selbst-Adaptive Software.Geihs, Kurt. In Informatik-Spektrum, 31(2), pp. 133–145. 2008.
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Vom Dienstgüte-Management zu Selbst-Adaptiven Systemen.Geihs, Kurt. In Wissen, Vernetzung, Virtualisierung (Liber amicorum für Prof. Dr. Udo Winand), O. von Kortzfleisch (ed.), pp. 477–489. Josef Eul Verlag, 2008.
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Ontology-based Automatic Model Transformations.Geihs, Kurt; Baer, Philipp A.; Reichle, Roland; Wollenhaupt, Jens. In Sixth IEEE International Conference on Software Engineering and Formal Methods (SEFM 2008). 2008.
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Markt-Vergemeinschaftung im Internet. Das Fallbeispiel einer Shop-ping- und Meinungsplattform.Lamla, Jörn. In Post-traditionale Gemeinschaften. Theoretische und ethnographische Erkundungen, R. Hitzler, A. Honer, M. Pfadenhauer (eds.), pp. 170–185. VS-Verlag, Wiesbaden, 2008.
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A Comprehensive Solution for Application-Level Adaptation.Geihs, Kurt; Barone, Paolo; Eliassen, Frank; Floch, Jacqueline; Fricke, Rolf; Gjørven, Eli; Hallsteinsen, S.; Horn, Geir; Khan, Mohammad Ullah; Mamelli, Alessandro; Papadopoulos, George A.; Paspallis, Nearchos; Reichle, Roland; Stav, Erlend. In Software Practice & Experience. 2008.
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Die Haftung der Betreiber von Web 2.0-Plattformen.Gitter, Rotraud. R. Gitter (ed.), pp. 279–286. 2008.
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Surfen – Kaufen – Anerkennung suchen: Problemzonen der Handlungsträgerschaft in der virtuellen Alltagsökonomie.Lamla, Jörn. In Die Natur der Gesellschaft. Verhandlungen des 33. Kongresses der DGS in Kassel 2006, K.-S. Rehberg (ed.), pp. 3103–3113. Campus, Frankfurt a.M./ New York, 2008.
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Systematisches Design Hybrider Produkte - Lösungsentwicklung im Projekt SPRINT.Leimeister, J. M.; Esch, S.; Knebel, U. In Technologie und Dienstleistung - Innovationen in Forschung, Wissenschaft und Unternehmen, I. Gatermann, M. Fleck (eds.). Campus, 2008.
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DAGR-DAG Based Context Reasoning: An Architecture for Context Aware Applications.Klein, Niklas; Lau, Sian Lun; Pirali, Andreas; Löffler, Tino; David, Klaus. In Proceedings of the 8th International Workshop on Applications and Services in Wireless Networks, of ASWN ’08, pp. 20–25. IEEE, Kassel, Germany, 2008.
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Pervasive computing includes the vision of small but intelligent devices around us. While the hardware of such devices is available in the market for years,they are still not intelligent in our every day life. For the success of the idea of pervasive computing a unified programming model is needed. Without a standard way of composing intelligent applications for pervasive computing, especially context aware applications to minimize user input, and without standard communication protocols it will take a longtime till before we will see those applications in the market. To establish such standards we first need to be clear of the requirements and how to deal with those requirements in the best way. In this paper we present three important requirements. Moreover we present anew framework DAGR (Directed acyclic graph based context reasoning) to address these requirements.
IT Management in deutschen Krankenhäusern - Eine empirische Untersuchung unter IT-Entscheidern. Leimeister, J. M.; Klapdor, S.; Hörmann, C.; Krcmar, H. 2nd ed. Books on Demand Verlag, ISBN: 978-3837047271, Norderstedt, Germany, 2008.
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Logsonomy -- A Search Engine Folksonomy.Jäschke, Robert; Krause, Beate; Hotho, Andreas; Stumme, Gerd. In Proceedings of the Second International Conference on Weblogs and Social Media(ICWSM 2008). AAAI Press, 2008.
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In social bookmarking systems users describe bookmarks by keywords called tags. The structure behind these social systems, called folksonomies, can be viewed as a tripartite hypergraph of user, tag and resource nodes. This underlying network shows specific structural properties that explain its growth and the possibility of serendipitous exploration. Search engines filter the vast information of the web. Queries describe a user’s information need. In response to the displayed results of the search engine, users click on the links of the result page as they expect the answer to be of relevance. The clickdata can be represented as a folksonomy in which queries are descriptions of clicked URLs. This poster analyzes the topological characteristics of the resulting tripartite hypergraph of queries, users and bookmarks of two query logs and compares it two a snapshot of the folksonomy del.icio.us.
Datenschutz im Gefüge der Grundrechte und ihrem gesellschaftlichen Wandel, in: Gaycken.Hornung, Gerrit. G. Hornung (ed.), pp. 249–264. 2008.
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Ein neues Grundrecht – der verfas¬sungsrechtliche Schutz der „Vertraulichkeit und Integrität informationstechnischer Systeme“.Hornung, Gerrit. G. Hornung (ed.). 2008.
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Do virtual communities matter for the social support of patients? Antecedents and effects of virtual relationships in online communities.Leimeister, J. M.; Schweizer, K.; Leimeister, S.; Krcmar, H. In Information Technology & People (ITP), Vol. 21, pp. 350–374. 2008.
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Systems and Data Protection Legislation in Germany.Hornung, Gerrit. pp. 1088–1093. 2008.
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Rezension von Borchers, Die Einführung des elektronischen Gesundheitskarte in das deutsche Gesundheitswesen.Hornung, Gerrit. G. Hornung (ed.). 2008.
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Besprechung von OLG Frankfurt, Urteil vom 1.7.2008.Hornung, Gerrit. G. Hornung (ed.), pp. 585–586. 2008.
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Besprechung von BGH, Beschluss vom 14.1.2008.Hornung, Gerrit. G. Hornung (ed.). 2008.
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Buchbesprechung von Puschke, Jens: Die kumulative Anordnung von Informationsbeschaffungsmaßnahmen im Rahmen der Strafverfolgung.Hornung, Gerrit. G. Hornung (ed.). 2008.
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Forschung à la Card? Grenzen und Vorschläge für eine Nutzung der elektronischen Gesundheitskarte zur medizinischen Forschung.Hornung, Gerrit; Roßnagel, Alexander. (9), G. H. A. Roßnagel (ed.), pp. 538–543. 2008.
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Coping with Chronic Illness Online: The Case of Patients’ Internet Communities For Diabetes Mellitus and Multiple Sclerosis.Bohnet-Joschko, S.; Bretschneider, U. In The Electronic Journal for Virtual Organizations and Networks (eJOV), 10(2), pp. 1–7. 2008.
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Discovering Shared Conceptualizations in Folksonomies.Jäschke, Robert; Hotho, Andreas; Schmitz, Christoph; Ganter, Bernhard; Stumme, Gerd. In Journal of Web Semantics, 6(1), pp. 38–53. 2008.
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A cross-cultural comparison of preceived strategic importance of RFID for CIOs in Germany and Italy.Jahner, S.; Leimeister, J. M.; Knebel, U.; Krcmar, H. In Proceedings of the 41st Annual Hawaii International Conference on System Sciences (HICSS 2008). Big Island, USA, 2008.
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Tag Recommendations in Social Bookmarking Systems.Jäschke, Robert; Marinho, Leandro; Hotho, Andreas; Schmidt-Thieme, Lars; Stumme, Gerd. In AI Communications, 21(4), E. Giunchiglia (ed.), pp. 231–247. IOS Press, Amsterdam, 2008.
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Collaborative tagging systems allow users to assign keywords - so called "tags" - to resources. Tags are used for navigation, finding resources and serendipitous browsing and thus provide an immediate benefit for users. These systems usually include tag recommendation mechanisms easing the process of finding good tags for a resource, but also consolidating the tag vocabulary across users. In practice, however, only very basic recommendation strategies are applied. In this paper we evaluate and compare several recommendation algorithms on large-scale real life datasets: an adaptation of user-based collaborative filtering, a graph-based recommender built on top of the FolkRank algorithm, and simple methods based on counting tag occurences. We show that both FolkRank and Collaborative Filtering provide better results than non-personalized baseline methods. Moreover, since methods based on counting tag occurrences are computationally cheap, and thus usually preferable for real time scenarios, we discuss simple approaches for improving the performance of such methods. We show, how a simple recommender based on counting tags from users and resources can perform almost as good as the best recommender.
Handlungsleitfaden zum Scannen von Papierdokumenten.Jandt, Silke; Roßnagel, Alexander. S. J. A. Roßnagel (ed.). 2008.
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Datenschutz im Gefüge der Grundrechte und ihrem gesellschaftlichen Wandel, in: Gaycken, S./Kurz, C.Hornung, Gerrit. G. Hornung (ed.). 2008.
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Vertrauen im Mobile Commerce – Vorschläge für die rechtsverträgliche Gestaltung von Location Based Services.Jandt, Silke. S. Jandt (ed.). 2008.
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Grenzenloser Mobile Commerce – Schutzwirkung und Durchsetzbarkeit datenschutzrechtlicher Ansprüche gegenüber ausländischen Diensteanbietern.Jandt, Silke. S. Jandt (ed.), pp. 664–669. 2008.
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2007[ to top ]

Die DNA-Analyse nach den Änderungen der Strafprozessordnung -- Speicherung bis auf Widerruf?Hornung, Gerrit. In Strafverteidiger 2007, p. 164. 2007.
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Softwareagenten im elektronischen Geschäftsverkehr. Gitter, Rotraud. A. Roßnagel (ed.). Nomos Verlag Baden-Baden, 2007.
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Anmerkung zu BGH, B. v. 25.11.2006 - 1 BGs 184/2006 - (Keine Rechtsgrundlage für heimliche Ausforschung von Computern).Hornung, Gerrit. In Computer und Recht, p. 144. 2007.
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Referenzmodell für einen IT-gestützten mobilen Gesundheitscoach.Esch, S.; Knebel, U.; Leimeister, J. M.; Krcmar, H. In Mobiles Computing in der Medizin - 7. Workshop der GMDS-Arbeitsgruppe Mobiles Computing in der Medizin (Mocomed) 2011, pp. 70–84. Augsburg, Germany, 2007.
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Die datenschutz- und sicherheitskonforme Ausgestaltung von Location Based Services am Beispiel eines mobilen Touristenführers.Becher, Silvio; Laue, Philip; Maidl, Monika; Modsching, Marko. B. König-Ries, F. Lehner, R. Malaka, C. Türker (eds.), p. 85. 2007.
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Erste höchstrichterliche Entscheidung zur elektronischen Signatur. Anmerkung zu BFH, U. v. 18.10.2006 - XI R 22/06.Fischer-Dieskau, Stefanie; Hornung, Gerrit. In Neue Juristische Wochenschrift, pp. 2897–2899. 2007.
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Tag Recommendations in Folksonomies.Jaeschke, Robert; Marinho, Leandro; Hotho, Andreas; Schmidt-Thieme, Lars; Stumme, Gerd. In Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007), A. Hinneburg (ed.), pp. 13–20. Martin-Luther-Universität Halle-Wittenberg, 2007.
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Migration als Ansatz zur Gestaltung mobiler Services.Bohl, O.; Manouchehri, S.; Winand, U. In eOrganisation: Service-, Prozess-, Market-Engineering - 8. Internationale Tagung Wirtschaftsinformatik, Vol. Band 1, A. Oberweis, C. Weinhardt, H. Gimpel, A. Koschmider, V. Pankratius, B. Schnizler (eds.), pp. 309–326. Universitätsverlag Karlsruhe, Karlsruhe, 2007.
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Datenschutz bei Location Based Services -- Voraussetzungen und Grenzen der rechtmäßigen Verwendung von Positionsdaten.Jandt, Silke. In MMR, pp. 74–78. 2007.
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TeleMediaR - Telekommunikations- und Multimediarecht, dtv-Textsammlung mit einer Einführung. Geppert, M.; Roßnagel, A. M. Geppert; A. Roßnagel (eds.). Beck-Texte im dtv, 7.Auflage, München, 2007.
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A Development Framework for Adaptive Pervasive Applications.Geihs, Kurt. In Workshop on Software Engineering of Pervasive Services (SEPS07) in conjunction with IEEE ICPS07. IEEE, 2007.
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Mining the World Wide Web --- Methods, Applications, and Perspectives.Hotho, Andreas; Stumme, Gerd. In Künstliche Intelligenz, (3), A. Hotho; G. Stumme (eds.), pp. 5–8. 2007.
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Development of Self-Adaptive Services.Geihs, Kurt; Reichle, Roland. In 14th Workshop of the HP Software University Association (HPSUA). 2007.
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Ansätze der Nutzung Sozialer Netzwerke mittles mobiler Endgeräte.Ammermueller, S.; Bohl, O.; Gerstheimer, O.; Manouchehri, S. In Virtuelle Organisation und Neue Medien 2007. Workshop GeNeMe 2007, Gemeinschaften in Neuen Medien, K. Meißner, M. Engelien (eds.), pp. 131–143. TUDpress, Dresden, 2007.
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Die Haftung von W-LAN Betreibern. Neue Gefahren für Anschlussinhaber - und die Idee "offener" Netze.Hornung, Gerrit. In Computer und Recht, pp. 88–94. 2007.
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Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at WWW 2007. Alani, Harith; Noy, Natasha; Stumme, Gerd; Mika, Peter; Sure, York; Vrandecic, Denny. Banff, Canada, 2007.
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Themenheft Web Mining, Künstliche Intelligenz. Hotho, Andreas; Stumme, Gerd. In , pp. 5–8. 2007.
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Communication and Collaboration in Heterogeneous Teams of Soccer Robots.Baer, Philipp A.; Reichle, Roland. pp. 1–28. I-Tech Education and Publishing, Vienna, Austria, 2007.
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A Generative Approach to the Development of Autonomous Robot Software.Baer, Philipp A.; Reichle, Roland; Zapf, Michael; Weise, Thomas; Geihs, Kurt. In Fourth IEEE International Workshop on Engineering of Autonomic and Autonomous Systems, T. B. R. Sterrit (ed.), pp. 43–52. IEEE, 2007.
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Rechtsfragen mobiler Agenten in Sicherheit und Rechtsverbindlichkeit mobiler Agenten.Gitter, Rotraud. R. Gitter, U. Pinsdorf, V. Lotz, A. Roßnagel (eds.). Wiesbaden, 2007.
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Die zweite Simulationsstudie in Sicherheit und Rechtsverbindlichkeit mobiler Agenten.Gitter, Rotraud; Laue, Philip; Peters, J. R. Gitter, U. Pinsdorf, V. Lotz, A. Roßnagel (eds.). Wiesbaden, 2007.
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Die "Einheitlichen Ansprechpartner" der Dienstleistungsrichtlinie -- Vorgaben und Auswirkungen einer Reformverpflichtung.Knopp, Michael. In LKRZ (Zeitschrift für Landes- und Kommunalrecht Hessen/Rheinland-Pfalz/Saarland), p. 251. 2007.
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Personal Mobile Sports Companion: Design and Evaluation of IT-Supported Product-Service-Bundles in the Sports Industry.Knebel, U.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS), H. Österle, J. Schelp, R. Winter (eds.), pp. 81–92. St. Gallen, 2007.
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Ermächtigungsgrundlage für die "Online-Durchsuchung"? Verfassungsrechtliche Anforderungen und Grenzen für den heimlichen Zugriff auf IT-Systeme im Ermittlungsverfahren.Hornung, Gerrit. In Datenschutz und Datensicherheit (DuD), pp. 575–580. 2007.
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Die Haftung von W-LAN Betreibern. Neue Gefahren für Anschlussinhaber - und die Idee "offener" Netze, Computer und Recht.Hornung, Gerrit. In Computer und Recht, pp. 88–94. 2007.
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Urteilsanmerkung zu EGMR, Application no. 62617/00 - Copland ./. Vereinigtes Königreich (Überwachung von privater E-Mail und Internetnutzung am Arbeitsplatz).Hornung, Gerrit. In MMR, pp. 433–434. 2007.
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Single Sign-On Clinic Card-Lösung - Ein Konzept zur zentralen Verwaltung von Gesundheitskarten im stationären Umfeld.Mauro, C.; Schweiger, A.; Sunyaev, A.; Leimeister, J. M.; Krcmar, H. In Informatik 2007, pp. 463–468. GI - Gesellschaft für Informatik, Bremen, 2007.
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An Unsupervised Approach for Adaptive Color Segmentation.Kaufmann, Ulrich; Reichle, Roland; Hoppe, Christof; Baer, Philipp A. In International Workshop on Robot Vision, VISAPP 2007. 2007.
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A framework for developing personalizable mobile services in automobiles.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In European Conference on Information Systems (ECIS), H. Österle, J. Schelp, R. Winter (eds.), pp. 938–949. University of St. Gallen, St. Gallen, Switzerland, 2007.
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Pilotierung mobiler Dienste im Automobilsektor.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In Mobile Dienste im Auto der Zukunft, pp. 125–203. Eul-Verlag, 2007.
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Über Möglichkeiten und Grenzen der rechtlichen Bewertung neuer Überwachungstechnologien.Hornung, Gerrit. N. Zurawski (ed.), pp. 149–166. Surveillance Studies. Perspektiven eines Forschungsfeldes, Opladen & Farmington Hills 2007, 2007.
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Applying Architectural Constraints in the Modeling of Self-adaptive Component-based Applications.Khan, Mohammad Ullah; Reichle, Roland; Geihs, Kurt. In Model-Driven Software Adaptation (M-ADAPT’07) at The European Conference on Object-Oriented Programming (ecoop07), Vol. 1, pp. 13–22. 2007.
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Automotive Service Engineering - Systematische Entwicklung personalisierbarer und interaktiver mobiler Dienste für den Automobilsektor.Hoffmann, H.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik Konferenz (WI) 2007, Vol. 1, pp. 327–344. Universitätsverlag Karlsruhe, Karlsruhe, 2007.
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Tag Recommendations in Folksonomies.Jäschke, Robert; Marinho, Leandro Balby; Hotho, Andreas; Schmidt-Thieme, Lars; Stumme, Gerd. In Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Vol. 4702 of Lecture Notes in Computer Science, J. N. Kok, J. Koronacki, R. L. de Mántaras, S. Matwin, D. Mladenic, A. Skowron (eds.), pp. 506–514. Springer, Berlin, Heidelberg, 2007.
- [ Abstract ]
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Collaborative tagging systems allow users to assign keywords—so called “tags”—to resources. Tags are used for navigation, finding resources and serendipitous browsing and thus provide an immediate benefit for users. These systems usually include tag recommendation mechanisms easing the process of finding good tags for a resource, but also consolidating the tag vocabulary across users. In practice, however, only very basic recommendation strategies are applied. In this paper we evaluate and compare two recommendation algorithms on largescale real life datasets: an adaptation of user-based collaborative filtering and a graph-based recommender built on top of FolkRank. We show that both provide better results than non-personalized baseline methods. Especially the graph-based recommender outperforms existing methods considerably.
Wirtschaftsverfassung in Deutschland und Europa, Festschrift für Bernhard Nagel. Hänlein, Andreas; Roßnagel, Alexander. K. U. press Festschrift für Bernhard Nagel (ed.). Andreas Hänlein, Alexander Roßnagel (Hrsg.), 2007.
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Analysis of the Publication Sharing Behaviour in BibSonomy.Jäschke, Robert; Hotho, Andreas; Schmitz, Christoph; Stumme, Gerd. In Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), Vol. 4604 of Lecture Notes in Artificial Intelligence, U. Priss, S. Polovina, R. Hill (eds.), pp. 283–295. Springer-Verlag, Berlin, Heidelberg, 2007.
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BibSonomy is a web-based social resource sharing system which allows users to organise and share bookmarks and publications in a collaborative manner. In this paper we present the system, followed by a description of the insights in the structure of its bibliographic data that we gained by applying techniques we developed in the area of Formal Concept Analysis.
Wahrgenommene strategische Bedeutung von RFID aus Sicht von IT-Entscheidern in Deutschland - Eine empirische Analyse.Knebel, U.; Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik 2007, Vol. 1, pp. 89–106. Universitätsverlag Karlsruhe, Karlsruhe, 2007.
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The European Regulation on Biometric Passports: Legislative Procedures, Political Interactions, Legal Framework and Technical Safeguards.Hornung, Gerrit. In SCRIPT-ed, pp. 246–262. 2007.
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Organizing Publications and Bookmarks in BibSonomy.Jäschke, Robert; Grahl, Miranda; Hotho, Andreas; Krause, Beate; Schmitz, Christoph; Stumme, Gerd. In Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at WWW 2007, H. Alani, N. Noy, G. Stumme, P. Mika, Y. Sure, D. Vrandecic (eds.). Banff, Canada, 2007.
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Gerrit Hornung: Die Festplatte als "Wohnung"? Erwiderung auf Johannes Rux.Hornung, Gerrit. In Juristenzeitung 2007, 285, pp. 828–831. 2007.
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Anmerkung zu OGH (Österreich), Beschluss v. 20. 12. 2006 -- 90bA 109/06d (Biometrische Ar-beitszeiterfassung als Beeinträchtigung der Menschenwürde).Hornung, Gerrit. In Arbeit und Recht 2007, 398 -- 401, pp. 398–401. 2007.
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Conceptual Clustering of Social Bookmark Sites.Grahl, Miranda; Hotho, Andreas; Stumme, Gerd. In Workshop Proceedings of Lernen -- Wissensentdeckung -- Adaptivität (LWA 2007), A. Hinneburg (ed.), pp. 50–54. Martin-Luther-Universität Halle-Wittenberg, 2007.
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Conceptual Clustering of Social Bookmarking Sites.Grahl, Miranda; Hotho, Andreas; Stumme, Gerd. In 7th International Conference on Knowledge Management (I-KNOW ’07), pp. 356–364. Know-Center, Graz, Austria, 2007.
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Currently, social bookmarking systems provide intuitive support for browsing locally their content. A global view is usually presented by the tag cloud of the system, but it does not allow a conceptual drill-down, e. g., along a conceptual hierarchy. In this paper, we present a clustering approach for computing such a conceptual hierarchy for a given folksonomy. The hierarchy is complemented with ranked lists of users and resources most related to each cluster. The rankings are computed using our FolkRank algorithm. We have evaluated our approach on large scale data from the del.icio.us bookmarking system.
Rechtsgrundlage für den biometrischen Reisepass: Das Gesetz zur Änderung des Passgesetzes und weiterer Vorschriften vom 24. Mai 2007.Hornung, Gerrit. A. Brömme, C. Busch, D. Hühnlein (eds.). BIOSIG 2007: Biometrics and Electronic Signatures. Proceedings of the Special Interest Group on Biometrics and Electronic Signatures, 12.-13. July 2007, Bonn 2007, 2007.
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Fingerabdrücke statt Doktortitel: Paradigmenwechsel im Passrecht.Hornung, Gerrit. In DuD 2007, pp. 181–185. 2007.
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Mobile Nutzung von Social Software im Gesundheitswesen.Manouchehri, S.; Höfer, A.; Winand, U. In Mobiles Computing in der Medizin, J. M. Leimeister, C. Mauro, H. Krcmar, T. Eymann, A. Koop (eds.), pp. 137–148. Shaker Verlag, Aachen, 2007.
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Die Richtlinie zur Vorratsspeicherung und ihre Umsetzung in das nationale Recht.Gitter, Rotraud; Schnabel, Christoph. In MMR, 2007, pp. 411–417. 2007.
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Sicherheit und Rechtsverbindlichkeit mobiler Agenten Fachbeiträge zu Datenschutz und Datensicherheit. Gitter, Rotraud; Lotz, Volkmar; Pinsdorf, Ulrich; Roßnagel, Alexander. R. Gitter; V. Lotz; U. Pinsdorf; A. Roßnagel (eds.). Deutscher Universitätsverlag, Wiesbaden 2007, 2007.
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Rechtliche Gestaltungsvorschläge in Sicherheit und Rechtsverbindlichkeit mobiler Agenten, Wiesbaden.Gitter, Rotraud; Learnt, L. R. Gitter, U. Pinsdorf, V. Lotz, A. Roßnagel (eds.). Wiesbaden, 2007.
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Softwareagentensysteme im elektronischen Geschäftsverkehr: Rechtliche Rahmenbedingungen und Gestaltungsanforderungen an agentengestützte Assistenzsysteme. Gitter, Rotraud. Baden-Baden, 2007.
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Reisepässe mit Biometrie und RFID-Chips - Bausteine einer neuen Identifizierungsinfrastruktur?Hornung, Gerrit. N. Zurawski (ed.), pp. 139–158. 2007.
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Building a Market-Community. Paradoxes of Culturalization and Merchandization in the Internet. Paper prepared for the Conference: “The institutional embeddedness of markets”. Lamla, Jörn. Max Planck Institute for the Study of Societies, Köln, 2007.
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Value Webs in the Digital Economy.Krcmar, Helmut; Lyytinen, Kalle; Leimeister, Jan Marco. In 40th Annual Hawaii International Conference on System Sciences (HICSS). Waikoloa, Hawaii, USA, 2007.
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IT-Management in deutschen Krankenhäusern - eine empirische Untersuchung unter IT-Entscheidern.Leimeister, J. M. Lehrstuhl für Wirtschaftsinformatik, Technische Universität München, München, 2007.
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XML index compression by DTD subtraction.Böttcher, Stefan; Steinmetz, Rita; Klein, Niklas. In ICEIS (1), J. Cardoso, J. Cordeiro, J. Filipe (eds.), pp. 86–94. 2007.
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Supporting Collaborative Hierarchical Classification: Bookmarks as an Example.Benz, Dominik; Tso, Karen H. L.; Schmidt-Thieme, Lars. In Special Issue of the Computer Networks journal on Innovations in Web Communications Infrastructure, 51(16), pp. 4574–4585. 2007.
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Bookmarks (or favorites, hotlists) are popular strategies to relocate interesting websites on the WWW by creating a personalized URL repository. Most current browsers offer a facility to locally store and manage bookmarks in a hierarchy of folders; though, with growing size, users reportedly have trouble to create and maintain a stable organization structure. This paper presents a novel collaborative approach to ease bookmark management, especially the “classification�? of new bookmarks into a folder. We propose a methodology to realize the collaborative classification idea of considering how similar users have classified a bookmark. A combination of nearest-neighbor-classifiers is used to derive a recommendation from similar users on where to store a new bookmark. A prototype system called CariBo has been implemented as a plugin for the central bookmark server software SiteBar. All findings have been evaluated on a reasonably large scale, real user dataset with promising results, and possible implications for shared and social bookmarking systems are discussed.
Automatic Service Process Administration by Semantic Service Discovery.Bleul, Steffen; Zapf, Michael; Geihs, Kurt. In 7ème Conférence Internationale sur les NOuvelles TEchnologies de la REpartition. Marrakech, Morocco, 2007.
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Internetbasierte Ideenwettbewerbe als Instrument der Integration von Kunden in das Innovationsmanagement von Software-Unternehmen.Bretschneider, U.; Ebner, W.; Leimeister, J. M.; Krcmar, H. In Virtuelle Organisationen und Neue Medien 2007 /Workshop GeNeMe 2007: Gemeinschaften in neuen Medien, M. Engelien, J. Homann (eds.). Joseph Eul Verlag, Dresden, Germany, 2007.
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Zweckbindung in ämterübergreifenden Verwaltungsworkflows.Laue, Philip; Maidl, Monika; Peters; J. In Datenschutz und Datensicherheit (DuD), p. 810. 2007.
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Konsumpraktiken in der virtuellen Alltagsökonomie. Forschungsde-sign und exemplarische Fallskizze.Lamla, Jörn. In Qualitative Marktforschung. Konzepte – Methoden – Analysen, Zweite, , R. Buber, H. Holzmüller (eds.), pp. 779–803. Gabler, Wiesbaden, 2007.
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Datenschutzgerechte Vorgangsbearbeitung im eGovernment.Laue, Philip; Audersch; S./Peters; J. P. Horster (ed.), p. 166. D-A-CH Security 2007, 166, 2007.
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Flexible Automatic Service Brokering for SOAs.Bleul, Steffen; Zapf, Michael; Geihs, Kurt. In 10 th IFIP / IEEE Symposium on Integrated Management (IM 2007). Munich, Germany, 2007.
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Prozessmanagement im Krankenhaus durch Process Owner Communities.Bretschneider, U.; Bohnet-Joschko, S. In Wissensmanagement im Krankenhaus: Effizienz- und Qualitätssteigerungen durch versorgungsorientierte Organisation von Wissen und Prozessen, S. Bohnet-Joschko (ed.), pp. 31–48. Gabler, Wiesbaden, Germany, 2007.
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Case study on social software use in distributed working environments.Cao, Yiwei; Ehms, Karsten; Fiedler, Sebastian; Hofer, Margit; Kaiamo, Anna-Kaarina; Kieslinger, Barbara; Klamma, Ralf; Krause, Beate; Kravcik, Milos; Ryyppö, Tommi; Spaniol, Marc; Stumme, Gerd; Wild, Fridolin. 2007.
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Mobiles Computing in der Medizin. Leimeister, J. M.; Mauro, C.; Krcmar, H.; Eymann, T.; Koop, A. In . Shaker Verlag, 2007.
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Mobiles Computing in der Medizin: Proceedings zum 7. Workshop der GMDS-Arbeitsgruppe Mobiles Computing in der Medizin. Leimeister, J. M.; Mauro, C. In of Berichte aus der medizinischen Informatik und Bioinformatik. Shaker, Aachen, 2007.
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RFID as enabler for the boundless real-time organisation: empirical insights from Germany.Leimeister, J. M.; Knebel, U.; Krcmar, H. In International Journal of Networking and Virtual Organisations, 4(1), Inderscience (ed.), pp. 45–64. 2007.
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Network Properties of Folksonomies.Cattuto, Ciro; Schmitz, Christoph; Baldassarri, Andrea; Servedio, Vito D. P.; Loreto, Vittorio; Hotho, Andreas; Grahl, Miranda; Stumme, Gerd. In AI Communications Journal, Special Issue on ``Network Analysis in Natural Sciences and Engineering’’, 20(4), S. Hoche; A. Nürnberger; J. Flach (eds.), pp. 245–262. IOS Press, 2007.
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Towards a research agenda for virtual communities.Dannecker, A.; Rajagopalan, B.; Leimeister, J. M.; Konana, P. In Proceedings of the Americas Conference on Information Systems (AMCIS 2007). Keystone,USA, 2007.
- [ URL ]
- [ BibSonomy-Post ]
Exploring mobile information systems for chronically ill adolescent patients.Leimeister, J. M.; Knebel, U.; Krcmar, H. In International Journal of Web-based Communities, 3(4), Inderscience (ed.). 2007.
- [ URL ]
- [ BibSonomy-Post ]
System concept and Service Architecture in pervasive environments based on WWRF Requirements.David, Klaus. In 4th IEEE Internatilonal Symposium on Wireless Communication Systems, pp. 375–379. IEEE, Trondheim, Norway, 2007.
- [ Abstract ]
- [ URL ]
- [ DOI ]
- [ BibSonomy-Post ]
The vision of pervasive computing and communication is likely to have a major impact on our lives. The WWRF (Wireless World Research Forum) has summarized this vision by the statement: "7 trillion wireless devices serving 7 billion people by 2017". Following this vision, the goal for new business sectors will be to provide an easy way of creating and deploying different kinds of service environments. This paper introduces the overall system vision with an emphasis on the requirements on and the problem of overall architectures for service execution environments and identifies an architectural approach, the requirements and design guidelines to built service execution environments and related platforms. A special focus will be given on the subjects of context awareness and personalization.
Ontology-Based Self-Organization in Service-Oriented Architectures.Bleul, Steffen; Zapf, Michael. In 2. Workshop Selbst-organisierende, adaptive, kontextsensitive verteilte Systeme (SAKS). VDE, Bern, Swiss, 2007.
- [ URL ]
- [ BibSonomy-Post ]
Dealing with Application-specific Knowledge in Context-Aware Systems.Coutand, Oliver; Haseloff, Sandra; David, Klaus. In 2007 ITG-GI Conference on Communication in Distributed Systems, of KiVS, pp. 1–12. VDE Verlag, Bern, Switzerland, 2007.
- [ Abstract ]
- [ URL ]
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Context-aware applications provide users with information and services, personalized according to the user's context. They are supported by context-aware systems that gather sensor data and build context representations. Then applications use context to adapt their behaviors. But performing adaptation in context-aware systems offers advantages to fulfill the vision of a pervasive computing environment, where users interact with various context-aware applications. It ensures the privacy of user data stored in a central user model that is used to serve several applications. However, adaptation differs for different applications and is governed by application-specific knowledge. This knowledge must be communicated to the systems. In this paper, we present three types of knowledge 1) the description of the application behaviors 2) the context elements, describing the context information relevant for adapting the application and 3) the adaptation knowledge required to infer the adaptation. Also we present examples of the three templates, considering an application we developed, the Call Profile Manager.
Automatische Dienstvermittlung in dienstorientierten Architekturen. Technical Report (34-2007070), . Bleul, Steffen; Geihs, Kurt. Kasseler Informatikschriften (KIS), Kassel, Germany, 2007.
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Migration as a promising approach for designing innovative services.Bohl, O.; Manouchehri, S.; Winand, U. In Al-Dahoud, A. (Ed.): The 3rd International Conference on Information Technology. Proceedings of ICIT 2007, Amman, CD-Rom, Vol. 3. 2007.
- [ BibSonomy-Post ]
Tagungsbericht zur Fachkonferenz Datenschutz 2007, "Herausforderungen für die Modernisierung des Datenschutzrechts" 14.6.2007, Berlin.Löwe, Jutta. 2007.
- [ BibSonomy-Post ]
Sensor Selection in Context-Aware Systems.Löffler, Tino; Haseloff, Sandra; David, Klaus. In Proceedings of the 3rd Workshop on Context Awareness for Proactive Systems, of CAPS07. Guildford, United Kingdom, 2007.
- [ BibSonomy-Post ]
Unternehmerische Wertschöpfung im Kontext des Web 2.0.Bohl, O.; Manouchehri, S.; Winand, U. In Web 2.0. HMD Praxis der Wirtschaftsinformatik, (255), A. Beck; M. Mörike; H. Sauerburger (eds.), pp. 27–36. dpunkt.verlag, 2007.
- [ BibSonomy-Post ]
Making a Fast Semantic Service Composition System Faster.Bleul, Steffen; Weise, Thomas; Geihs, Kurt. In IEEE Joint Conference on E-Commerce Technology (CEC07) and Enterprise Computing, E-Commerce and E-Services (EEE07), pp. 517–520. IEEE Computer Society, 2007.
- [ URL ]
- [ BibSonomy-Post ]
Mobile information systems for the private everyday life.Bohl, O.; Manouchehri, S.; Winand, U. In Mobile Information Systems. Special Issue: Improving Quality of Service in Mobile Information Systems, Services and Networks, 3(3-4), pp. 135–152. 2007.
- [ BibSonomy-Post ]
Vertrauen(skapseln) beim Online-Einkau.Kumbruck, Christel; Sacher, Markus; Stumpf, Frederic. In Datenschutz und Datensicherheit (DuD), pp. 362–366. 2007.
- [ BibSonomy-Post ]
Mobile social software - Potentials and limitations of enabling social networking.Bohl, O.; Manouchehri, S.; Ammermueller, S.; Gerstheimer, O. In The Sixth International Conference on on the Management of Mobile Business. Proceedings of ICMB 2007, CD-Rom, N. Archer, K. Hassanein, Y. Yufei (eds.). Toronto, 2007.
- [ BibSonomy-Post ]
Migration als systematischer Ansatz für erfolgreiche IKT-Innovations-und Wandlungsprozesse.Bohl, O.; Höfer, A.; Manouchehri, S. In IM - Information Management & Consulting. Embedded Software IT Migrationen, (3), pp. 44–48. 2007.
- [ BibSonomy-Post ]
Position Paper: Ontology Learning from Folksonomies.Benz, Dominik; Hotho, Andreas. In Workshop Proceedings of Lernen - Wissensentdeckung - Adaptivität (LWA 2007), A. Hinneburg (ed.), pp. 109–112. Martin-Luther-Universität Halle-Wittenberg, 2007.
- [ Abstract ]
- [ URL ]
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The emergence of collaborative tagging systems with their underlying flat and uncontrolled resource organization paradigm has led to a large number of research activities focussing on a formal description and analysis of the resulting “folksonomies�?. An interesting outcome is that the characteristic qualities of these systems seem to be inverse to more traditional knowledge structuring approaches like taxonomies or ontologies: The latter provide rich and precise semantics, but suffer - amongst others - from a knowledge acquisition bottleneck. An important step towards exploiting the possible synergies by bridging the gap between both paradigms is the automatic extraction of relations between tags in a folksonomy. This position paper presents preliminary results of ongoing work to induce hierarchical relationships among tags by analyzing the aggregated data of collaborative tagging systems as a basis for an ontology learning procedure.
Migration of mobile social networks.Bohl, O.; Manouchehri, S.; Ammermueller, S.; Gerstheimer, O. In Proceedings of the IADIS International Conference, WWW/Internet 2007, Vol. 2, P. Isaías, M. B. Nunes, J. Barroso (eds.), pp. 138–143. Vial Real, Portugal, 2007.
- [ BibSonomy-Post ]
Invited Paper: Solutions for a Service Architecture in Pervasive Environments Based on WWRF WG2 Requirements.David, Klaus; Drögehorn, Olaf; Klemettinen, Mika. In International Symposium on Applications and the Internet Workshops, of SAINT Workshops 2007, pp. 1–6. IEEE, Hiroshima, Japan, 2007.
- [ Abstract ]
- [ URL ]
- [ DOI ]
- [ BibSonomy-Post ]
The vision of pervasive computing and communication is likely to have a major impact on our lives. The WWRF (Wireless World Research Forum) has summarized this vision by the statement: "7 trillion wireless devices serving 7 billion people by 2017". Following this vision, the goal for new business sectors will be to provide an easy way of creating and deploying different kinds of service environments. This paper introduces the requirements on and the problem of overall architectures for service execution environments and identifies an architectural approach, the requirements and design guidelines to built service execution environments and related platforms. The concepts presented in this paper have partly been developed by the Wireless World Research Forum (WWRF) Working Group 2 (WG2) and are under ongoing discussion.
Invited Talk: Solutions for a Service Architecture in Pervasive Environments Based on WWRF WG2 Requirements.David, Klaus; Drogehorn, Olaf; Klemettinen, Mika. In SAINT-W ’07: Proceedings of the 2007 International Symposium on Applications and the Internet Workshops, p. 9. IEEE Computer Society, Washington, DC, USA, 2007.
- [ DOI ]
- [ BibSonomy-Post ]
Quality-aware Self-Management for Service Processes in Service-Oriented Architectures.Bleul, Steffen. In IBM PhD Student Symposium at ICSOC 2007, T. Dumitras, A. Hanemann, B. Kratz, J. Pathak (eds.). IBM Research Devision, Vienna, Austria, 2007.
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Strategic importance of RFID - Empirical and conceptual insights.Leimeister, J. M.; Knebel, U.; Sandner, U.; Kern, E. M.; Krcmar, H. In Handbook of Radio Frequency Identification (RFID) - Technologies in Operations and Supply Chain Management, T. Blecker, G. Huang (eds.). E. Schmidt-Verlag, 2007.
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2006[ to top ]

An Ontology for Quality-Aware Service Discovery.Bleul, Steffen; Weise, Thomas; Geihs, Kurt. In Special Edition Editorial: Engineering Design and Composition of Service-Oriented Applications, Computer Systems Science & Engineering, 5(21). 2006.
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Large-Scale Service Composition in Semantic Service Discovery.Bleul, Steffen; Weise, Thomas; Geihs, Kurt. In IEEE Joint Conference on E-Commerce Technology (CECâ��06) and Enterprise Computing, E-Commerce and E-Services (EEEâ��06), pp. 427–429. Springer Press, 2006.
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Schlüsseltexte der Kritischen Theorie. Honneth, Axel; Beaufaÿs, Sandra; Jaeggi, Rahel; Lamla, Jörn; Hartmann, Martin; für Sozialforschung, Institut. VS-Verlag, Wiesbaden, 2006.
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Ortsunabhängiges Management von hochpreisigen mobilen medizinischen Geräten im Krankenhaus auf WLAN-Basis.Leimeister, J. M.; Schweiger, A.; Krcmar, H. In Proceedings of Informatik 2006, pp. 220–226. GI - Gesellschaft für Informatik, Dresden, 2006.
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Virtuelle Communities für Patienten - Das Forschungsprojekt "Community Online Services and Mobile Solutions" (COSMOS) - Teilprojekt Healthcare.Leimeister, J. M.; Krcmar, H. In Telemedizinführer Deutschland, A. M. Jäckel (ed.). Minerva, 2006.
- [ BibSonomy-Post ]
FolkRank: A Ranking Algorithm for Folksonomies.Hotho, Andreas; Jäschke, Robert; Schmitz, Christoph; Stumme, Gerd. In Proc. FGIR 2006. 2006.
- [ Abstract ]
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In social bookmark tools users are setting up lightweight conceptual structures called folksonomies. Currently, the information retrieval support is limited. We present a formal model and a new search algorithm for folksonomies, called FolkRank, that exploits the structure of the folksonomy. The proposed algorithm is also applied to find communities within the folksonomy and is used to structure search results. All findings are demonstrated on a large scale dataset. A long version of this paper has been published at the European Semantic Web Conference 2006.
Alternatives to support processes of everyday life with mobile technologies.Bohl, O.; Manouchehri, S.; Winand, U. In The Fourth International Conference on Advances In Mobile Computing and Multimedia. Proceedings of MoMM 2006, Vol. 215, G. Kotsis, D. Taniar, E. Pardede, I. K. Ibrahim (eds.), pp. 273–279. Austrian Computer Society, 2006.
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Semantics, Web and Mining. Ackermann, Markus; Berendt, Bettina; Grobelnik, Marko; Hotho, Andreas; Mladenic, Dunja; Semeraro, Giovanni; Spiliopoulou, Myra; Stumme, Gerd; Svatek, Vojtech; van Someren, Maarten. Springer, Heidelberg, 2006.
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A Component-based Planning Framework for Adaptive Systems.Alia, Mourad; Horn, Geir; Khan, Mohammad Ullah; Fricke, Rolf; Reichle, Roland. In The 8th International Symposium on Distributed Objects and Applications (DOA). 2006.
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Online Health Communities: Eine empirische Untersuchung virtueller Gemeinschaften für Multiple Sklerose- und Diabetes Mellitus-Erkrankte.Bohnet-Joschko, S.; Bretschneider, U. In Gesundheitsökonomische Diskussionspapiere der Forschungsgruppe Nachhaltigkeit, (1). Universität Witten/Herdecke, 2006.
- [ BibSonomy-Post ]
Wissensbasiertes Prozessmanagement zur Optimierung der Leistungserstellung im Krankenhaus.Bohnet-Joschko, S.; Bretschneider, U. In Zeitschrift für öffentliche und gemeinwirtschaftliche Unternehmen (ZögU), 29(2), pp. 201–211. 2006.
- [ BibSonomy-Post ]
Information Retrieval in Folksonomies: Search and Ranking.Hotho, Andreas; J�schke, Robert; Schmitz, Christoph; Stumme, Gerd. In The Semantic Web: Research and Applications, Vol. 4011 of LNAI, Y. Sure, J. Domingue (eds.), pp. 411–426. Springer, Heidelberg, 2006.
- [ BibSonomy-Post ]
Information Retrieval in Folksonomies: Search and Ranking.Hotho, Andreas; Jäschke, Robert; Schmitz, Christoph; Stumme, Gerd. In The Semantic Web: Research and Applications, Vol. 4011 of LNAI, Y. Sure, J. Domingue (eds.), pp. 411–426. Springer, Heidelberg, 2006.
- [ BibSonomy-Post ]
Trend Detection in Folksonomies.Hotho, Andreas; Jäschke, Robert; Schmitz, Christoph; Stumme, Gerd. In Proc. First International Conference on Semantics And Digital Media Technology (SAMT), Vol. 4306 of LNCS, Y. S. Avrithis, Y. Kompatsiaris, S. Staab, N. E. O’Connor (eds.), pp. 56–70. Springer, Heidelberg, 2006.
- [ Abstract ]
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As the number of resources on the web exceeds by far the number of documents one can track, it becomes increasingly difficult to remain up to date on ones own areas of interest. The problem becomes more severe with the increasing fraction of multimedia data, from which it is difficult to extract some conceptual description of their contents. One way to overcome this problem are social bookmark tools, which are rapidly emerging on the web. In such systems, users are setting up lightweight conceptual structures called folksonomies, and overcome thus the knowledge acquisition bottleneck. As more and more people participate in the effort, the use of a common vocabulary becomes more and more stable. We present an approach for discovering topic-specific trends within folksonomies. It is based on a differential adaptation of the PageRank algorithm to the triadic hypergraph structure of a folksonomy. The approach allows for any kind of data, as it does not rely on the internal structure of the documents. In particular, this allows to consider different data types in the same analysis step. We run experiments on a large-scale real-world snapshot of a social bookmarking system.
Emergent Semantics in BibSonomy.Hotho, Andreas; Jäschke, Robert; Schmitz, Christoph; Stumme, Gerd. In Informatik 2006 -- Informatik für Menschen. Band 2, Vol. P-94 of Lecture Notes in Informatics, C. Hochberger, R. Liskowsky (eds.). Gesellschaft für Informatik, Bonn, 2006.
- [ Abstract ]
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Social bookmark tools are rapidly emerging on the Web. In suchsystems users are setting up lightweight conceptual structurescalled folksonomies. The reason for their immediate success is thefact that no specific skills are needed for participating. In thispaper we specify a formal model for folksonomies, briefly describeour own system BibSonomy, which allows for sharing both bookmarks andpublication references, and discuss first steps towards emergent semantics.
Wege zur Entdeckung von Communities in Folksonomies.Jäschke, Robert; Hotho, Andreas; Schmitz, Christoph; Stumme, Gerd. In Proc. 18. Workshop Grundlagen von Datenbanken, S. Braß, A. Hinneburg (eds.), pp. 80–84. Martin-Luther-Universität, Halle-Wittenberg, 2006.
- [ Abstract ]
- [ URL ]
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Ein wichtiger Baustein des neu entdeckten World Wide Web -- des "`Web 2.0"' -- stellen Folksonomies dar. In diesen Systemen können Benutzer gemeinsam Ressourcen verwalten und mit Schlagwörtern versehen. Die dadurch entstehenden begrifflichen Strukturen stellen ein interessantes Forschungsfeld dar. Dieser Artikel untersucht Ansätze und Wege zur Entdeckung und Strukturierung von Nutzergruppen ("Communities") in Folksonomies.
Wissensmanagement im Krankenhaus.Bohnet-Joschko, S.; Bretschneider, U. In Wissensmanagement, 8(3), pp. 16–17. 2006.
- [ BibSonomy-Post ]
Empirische Untersuchung von Online-Selbsthilfegruppen für Diabetes-Mellitus- und Multiple Sklerose-Patienten: Determinanten des Erfolgs aus der Nutzerperspektive.Bohnet-Joschko, S.; Bretschneider, U. In Virtuelle Organisation und Neue Medien 2006, Konferenzband zur Gemeinschaft in Neuen Medien (GeNeMe), K. Meißner, M. Engelien (eds.), pp. 359–371. TUDpress, Dresden, Germany, 2006.
- [ BibSonomy-Post ]
Process Owner Communities: Akteure eines Wissensmanagements im Krankenhaus.Bohnet-Joschko, S.; Bretschneider, U. In Journal Arbeit, 6(1), pp. 20–21. 2006.
- [ BibSonomy-Post ]
Exploring success factors of virtual communities: The perspectives of members and operators.Leimeister, J. M.; Sidiras, P.; Krcmar, H. In Journal of Organizational Computing & Electronic Commerce (JoCEC), 16(3&4), pp. 277–298. Lawrence Earlbaum, 2006.
- [ URL ]
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Innovation, made in Germany - Die eGK und die Telematikinfrastruktur für das deutsche Gesundheitswesen (Teil 1).Klapdor, S.; Leimeister, J. M.; Krcmar, H. In Krankenhaus IT-Journal, 4(1), pp. 32–34. 2006.
- [ URL ]
- [ BibSonomy-Post ]
Community Engineering - Systematischer Aufbau und Betrieb Virtueller Communities im Gesundheitswesen.Leimeister, J. M.; Krcmar, H. In Wirtschaftsinformatik, 48(6), pp. 418–429. Vieweg, 2006.
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Technologien für Online-Communities. In: Unternehmenskommunikation. Leimeister, J. M.; Krcmar, H. In . Symposion Publishing, 2006.
- [ URL ]
- [ BibSonomy-Post ]
Designing and implementing virtual patient support communities: A German case study.Leimeister, J. M.; Krcmar, H. In The Internet and health care: Theory, research and practice, M. Murero, R. E. Rice (eds.). Lawrence Erlbaum Associates, 2006.
- [ URL ]
- [ BibSonomy-Post ]
TRIAS - An Algorithm for Mining Iceberg Tri-Lattices.Jäschke, Robert; Hotho, Andreas; Schmitz, Christoph; Ganter, Bernhard; Stumme, Gerd. In Proceedings of the 6th IEEE International Conference on Data Mining (ICDM 06), pp. 907–911. IEEE Computer Society, Hong Kong, 2006.
- [ URL ]
- [ DOI ]
- [ BibSonomy-Post ]
Innovation, made in Germany - Die eGK und die Telematikinfrastruktur für das deutsche Gesundheitswesen (Teil 2).Klapdor, S.; Leimeister, J. M.; Krcmar, H. pp. 48–49. 2006.
- [ URL ]
- [ BibSonomy-Post ]
Identifikation von Unterstützungsmöglichkeiten individueller Lebensprozesse durch mobile Technologien.Bohl, O.; Manouchehri, S.; Winand, U. In Informatik 2006. Informatik für Menschen, Vol. 1, R. Hochberger (ed.), pp. 227–233. Lecture Notes in Informatics, 2006.
- [ BibSonomy-Post ]
Modeling of Component-based Adaptive Distributed Applications.Geihs, Kurt; Khan, Mohammad Ullah; Reichle, Roland; Solberg, A.; Hallsteinsen, S.; Merral, S. In The 21st Annual ACM Symposium on Applied Computing. 2006.
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- [ BibSonomy-Post ]
Strategic importance of RFID - The perspective of IT decision makers in Italy.Knebel, U.; Leimeister, J. M.; Krcmar, H. In Journal of Information Technology Management, 17(4). Association of Management, 2006.
- [ URL ]
- [ BibSonomy-Post ]
An Approach Using Memory-Based Reasoning for Determining the Behaviour of Mobile, Location-Aware Services.Coutand, Olivier; Lau, Sian Lun; Haseloff, Sandra; Droegehorn, Olaf; David, Klaus. In Proceedings of the 2nd Workshop on Context Awareness for Proactive Systems CAPS 2006. Kassel, 2006.
- [ BibSonomy-Post ]
Design Principles and Requirements of Future Service Platforms.David, Klaus; Drögehorn, Olaf. In Proceedings of the 3rd International Symposium on Wireless Communication Systems 2006, pp. 164–168. IEEE, Valencia, Spain, 2006.
- [ Abstract ]
- [ URL ]
- [ DOI ]
- [ BibSonomy-Post ]
The vision of pervasive computing and communication will have an important impact on our lives. Following this vision, the goal for new business sectors will be to provide an easy way of creating and deploying different kinds of service environments. This paper introduces the requirements on and the problem of overall architectures for service execution environments and identifies an architectural approach, the requirements and design guidelines to built service execution environments and related platforms that are fully compatible to each other. The concepts presented in this paper have been developed by the Wireless World Research Forum (WWRF) Working Group 2 (WG2) and are under ongoing discussion.
Why Robots Play Soccer (Keynote Extended Abstract).Geihs, Kurt. In Annual Conference of the South African Institute of Computer Scientists and Information Technologists (SAICSIT 2006), of International Proceedings Series, T. A. J. Bishop (ed.). ACM, 2006.
- [ URL ]
- [ BibSonomy-Post ]
8th International Symposium on Distributed Objects and Applications (DOA). Bishop, J.; Geihs, Kurt; (Eds.), M. Takizawa. In of 8th International Symposium on Distributed Objects and Applications (DOA). 2006.
- [ URL ]
- [ BibSonomy-Post ]
Automatic Bookmark Classification - A Collaborative Approach.Benz, Dominik; Tso, Karen H. L.; Schmidt-Thieme, Lars. In Proceedings of the 2nd Workshop in Innovations in Web Infrastructure (IWI2) at WWW2006. Edinburgh, Scotland, 2006.
- [ Abstract ]
- [ URL ]
- [ BibSonomy-Post ]
Bookmarks (or Favorites, Hotlists) are a popular strategy to relocate interesting websites on the WWW by creating a personalized local URL repository. Most current browsers offer a facility to store and manage bookmarks in a hierarchy of folders; though, with growing size, users reportedly have trouble to create and maintain a stable taxonomy. This paper presents a novel collaborative approach to ease bookmark management, especially the “classification�? of new bookmarks into a folder. We propose a methodology to realize the collaborative classification idea of considering how similar users have classified a bookmark. A combination of nearest-neighbour-classifiers is used to derive a recommendation from similar users on where to store a new bookmark. Additionally, a procedure to generate keyword recommendations is proposed to ease the annotation of new bookmarks. A prototype system called CariBo has been implemented as a plugin of the central bookmark server software SiteBar. A case study conducted with real user data supports the validity of the approach.
Framework for Systematic and Strategic Planning of Innovation-based Mobile Broadband Services.Köbler, F.; Leimeister, J. M.; Lugmayr, A. In 14th Euromicro International Conference on Parallel, Distributed, and Network-Based Processing (PDP06). Washington, DC, USA, 2006.
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- [ BibSonomy-Post ]
Politisierter Konsum – konsumierte Politik. Lamla, Jörn; Neckel, Sighard. VS-Verlag, Wiesbaden, 2006.
- [ BibSonomy-Post ]
Standortbezogene Dienste im Unternehmen.Hallaschka, Florian; Jandt, Silke. In MMR, pp. 436–440. 2006.
- [ BibSonomy-Post ]
Strategic importance of RFID - The CIO perspective. An empirical analysis in Germany.Knebel, U.; Leimeister, J. M.; Krcmar, H. In Americas Conference on Information Systems (AMCIS) 2006. Acapulco, 2006.
- [ URL ]
- [ BibSonomy-Post ]
Medien, Ordnung und Innovation. Klumpp, D.; Kubicek, H.; Roßnagel, A.; Schulz, W. Springer, 2006.
- [ BibSonomy-Post ]
Privatsphäre versus Erreichbarkeit bei der Nutzung von Social Software.Kuhlenkamp, A.; Manouchehri, S.; Mergel, I.; Winand, U. In Social Software. HMD Praxis der Wirtschaftsinformatik, (252), K. Hildebrand; J. Hofmann (eds.), pp. 27–35. dpunkt.verlag, 2006.
- [ BibSonomy-Post ]
Modeling of Component-Based Self-Adapting Context-Aware Applications for Mobile Devices.Geihs, Kurt; Khan, Mohammad Ullah; Reichle, Roland; Solberg, A. In IFIP Working Conference on Software Engineering Techniques. 2006.
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- [ BibSonomy-Post ]
Automatic Quality-Aware Service Discovery and Matching.Bleul, Steffen; Geihs, Kurt. In 13th Annual Workshop of HP OpenView University Association (HP-OVUA), pp. 109–118. Infocomics-Consulting, Stuttgart, Germany, 2006.
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- [ BibSonomy-Post ]
Self-Managed Systems And Services (Editorial).Martin-Flatin, J.-P.; Sventek, J.; Geihs, Kurt. In Communications of the ACM, 49(3). 2006.
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- [ BibSonomy-Post ]
A CBR Approach for Personalizing Location-aware Services.Coutand, Olivier; Haseloff, Sandra; Lau, Sian Lun; David, Klaus. In Proceedings of the 1st Workshop on Case-based Reasoning and Context Awareness co-located with the 8th European Conference on Case-Based Reasoning, of ECCBR 2006, S. Schwarz, S. Bogaerts, S. Schulz (eds.), pp. 247–259. CEUR-WS.org, Ölüdeniz / Fethiye, Turkey, 2006.
- [ Abstract ]
- [ BibSonomy-Post ]
The popularization of mobile devices in the last years has led to the development of an increasing number of services. However the technical limitations of mobile devices call for services that require minimal interactions with the user and adapt their behaviors to the user’s expectations. Context-awareness has proven to facilitate personalization of services by enabling the adaptation of the service to the user’s situation. However, the adaptation is often carried out by using predefined rules that only apply to some contexts. In this paper, we present our approach that addresses this limitation in location-aware services by referring to the previous actions of the user. We have developed a metric to calculate the similarity between the current user’s location and the previous ones. Based on this metric, our approach provides a personalized service by determining the service behavior expected by the user in the current location. A service, the Call Profiler service, details our approach.

2005[ to top ]

Semantic Web Mining and the Representation, Analysis, and Evolution of Web Space.Berendt, Bettina; Hotho, Andreas; Stumme, Gerd. In Proc. of the 1st Intl. Workshop on Representation and Analysis of Web Space, V. Svatek, V. Snasel (eds.), pp. 1–16. Technical University of Ostrava, 2005.
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Formal Concept Analysis -- Foundations and Applications. Ganter, B.; Stumme, G.; Wille, R. In Vol. 3626 of LNAI. Springer, Heidelberg, 2005.
- [ BibSonomy-Post ]
Proc. of the European Web Mining Forum 2005. Berendt, Bettina; Hotho, Andreas; Mladenic, Dunja; Semerano, Giovanni; Spiliopoulou, Myra; Stumme, Gerd; van Someren, Maarten. 2005.
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Mega-Trend Selbstorganisation.Geihs, Kurt. In Praxis der Informationsverarbeitung und Kommunikation (PIK), 28(4), p. 188. 2005.
- [ URL ]
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Evaluation virtueller Communities.Daum, M.; Arnold, Y.; Leimeister, J. M.; Krcmar, H. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 183–222. 2005.
- [ BibSonomy-Post ]
Towards Model-Driven Management.Geihs, Kurt. In Proceedings of the 12th Annual Workshop of HPOVUA 2005, R. O. B. Marques (ed.). 2005.
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- [ BibSonomy-Post ]
Visualization Techniques for Semi-Automatic Subgroup Mining.Atzmueller, Martin; Vogele, Tobias; Puppe, Frank. In Proceedings of the 29th Annual Conference of the German Classification Society (GfKl 2005). 2005.
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A Prototype for Translating XQuery Expressions into XSLT Stylesheets.Klein, Niklas; Groppe, Sven; Böttcher, Stefan; Gruenwald, Le. In ADBIS, Vol. 3631 of Lecture Notes in Computer Science, J. Eder, H.-M. Haav, A. Kalja, J. Penjam (eds.), pp. 238–253. Springer, 2005.
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Efficient Mining of Association Rules Based on Formal Concept Analysis.Lakhal, Lotfi; Stumme, Gerd. In Formal Concept Analysis: Foundations and Applications, Vol. 3626, B. Ganter, G. Stumme, R. Wille (eds.), pp. 180–195. Springer, Heidelberg, 2005.
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Association rules are a popular knowledge discovery technique for warehouse basket analysis. They indicate which items of the warehouse are frequently bought together. The problem of association rule mining has first been stated in 1993. Five years later, several research groups discovered that this problem has a strong connection to Formal Concept Analysis (FCA). In this survey, we will first introduce some basic ideas of this connection along a specific algorithm, titanic, and show how FCA helps in reducing the number of resulting rules without loss of information, before giving a general overview over the history and state of the art of applying FCA for association rule mining.
Ranked Matching for Service Descriptions using OWL-S.Jaeger, Michael C.; Rojec-Goldmann, Gregor; Mühl, Gero; Liebetruth, Christoph; Geihs, Kurt. In Informatik Aktuell, pp. 91–102. 2005.
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Vorgehensmodell für das Community Platform Engineering.Arnold, Y.; Leimeister, J. M.; Daum, M.; Krcmar, H. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 67–110. Eul-Verlag, Lohmar, 2005.
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Die virtuelle Community krebsgemeinschaft.de.Daum, M.; Arnold, Y.; Leimeister, J. M.; Krcmar, H. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 283–304. 2005.
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Self-Organization in Distributed Business Systems.Fromm, Jochen; Zapf, Michael; Geihs, Kurt. In Innovation and the Knowledge Economy: Issues, Applications, Case Studies, P. Cunningham, M. Cunningham (eds.), pp. 169–176. IOS Press, 2005.
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Potentials and benefits of patient communities from a German perspective.Krcmar, H.; Leimeister, J. M. In Proceedings of the 11th International Conference on Human-Computer Interaction (HCI-I 2005). Las Vegas, 2005.
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Effizienzsteigerung durch Wissensmanagement: Prozessoptimierung im Krankenhaus durch vernetztes Projektmanagement.Bohnet-Joschko, S.; Abrolat, J. R.; Bretschneider, U. In Zeitschrift Führung und Organisation (ZFO), 74(5), pp. 289–295. 2005.
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Selbst-Eigenschaften in verteilten Systemen.Fromm, Jochen; Zapf, Michael. In Praxis der Informationsverarbeitung und Kommunikation (PIK), 2005(4), pp. 189–198. 2005.
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Design und Test eines mobilen Assistenzsystems für krebskranke Jugendliche - Arbeitspapier Nr. 6.Esch, S.; Mauro, C.; Weyde, F.; Leimeister, J. M.; Krcmar, H.; Sedlak, R.; Stockklausner, C.; Kulozik, A. L. für Wirtschaftsinformatik Technische Universität München (ed.). 2005.
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Design Principles for Future Service Platforms.Drögehorn, Olaf; David, Klaus. In Proceedings of the Symposium on Applications and the Internet Workshops, of SAINT Workshops 2007, pp. 132–135. IEEE, Trento, Italy, 2005.
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The vision of pervasive computing and communication will shape the individual life in the future. Following this vision, the goal for new business sectors will be to provide an easy way of creating and deploying different kind of service environments. This paper introduces briefly the problem of overall architectures for service execution environments and identifies an architectural approach, the requirements and design guidelines to built service execution environments and related platforms that are fully compatible to each other. The concepts presented in this paper have been developed by the Wireless World Research Forum (WWRF) Working Group 2 (WG2) and are under permanent discussion in this forum.
Personalised Applications and Services for a mobile user.Drögehorn, Olaf; Wüst, Björn; David, Klaus. In Proceedings of the 7th International Symposium on Autonomous Decentralized Systems, pp. 473–479. IEEE, Chengdu, China, 2005.
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Personalisation provides a convenient means to ease the use of pervasive computing systems and related services. Profiles are one of the major building blocks for making real personalisation happen. In the existing heterogeneous and upcoming pervasive computing environment typically numerous different profiles are used and maintained by the user or different services, devices or operators. In order to avoid multiple copies of the same data profile synchronisation and linking should be used and applied between the different locations and administrative domains, in which the different types of profiles reside. But keeping in mind the different contexts', in which these profiles have been constructed, it is mostly unknown how to match the meaning of one profile to another or how to harmonize the different kind of values in the different profiles. In this paper, mechanisms for efficient synchronisation of profiles based on semantic distinctions are introduced. By using ontology's to distinguish between semantic entities profiles can be kept synchronous even using low-bandwidth radio links and mobile devices like smart-phones and PDAs.
Auf dem Weg zur integrierten Versorgung im Gesundheitswesen.Andreas, S.; Leimeister, J. M.; Helmut, K. pp. 62–64. 2005.
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Acceptance and utility of a systematically designed community for cancer patients.Leimeister, J. M.; Krcmar, H. In Proceedings of the 2nd International Conference on Communities and Technologies. Milan, 2005.
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TeleMediaR - Telekommunikations- und Multimediarecht, dtv-Textsammlung mit einer Einführung. Geppert, M.; Roßnagel, A. sechste, . Beck, 2005.
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Das Netz der Konsumenten. Innovationschancen der Verbraucherbewegung im Internet.Bieber, Christoph; Lamla, Jörn. In Forschungsjournal Neue Soziale Bewegungen, 18(4), pp. 65–77. 2005.
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Handbuch Technologie-& Innovationsmanagement - IT-Unterstützung bei der Innovationsentwicklung.Leimeister, J. M.; Böhmann, T.; Krcmar, H. S. Albers, O. Gassmann (eds.), pp. 323–340. Gabler, 2005.
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Toolgestützte Workshops für die IT-Innovationsentwicklung als IT-Beratungsmodell.Leimeister, J. M.; Böhmann, T.; Krcmar, H. In Proceedings of Informatik 2005, pp. 253–257. GI - Gesellschaft für Informatik, Bonn, 2005.
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An Ontology for Quality-Aware Service Discovery.Bleul, Steffen; Weise, Thomas. In First International Workshop on Engineering Service Compositions (WESC’05), of IBM Report RC23821, pp. 35–42. 2005.
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Self-Management: The Solution to Complexity or Just Another Problem?Herrmann, Klaus; Mühl, Gero; Geihs, Kurt. In IEEE Distributed Systems Online (DSOnline), 6(1). 2005.
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Virtuelle Communities für Patienten - Bedarfsgerechte Entwicklung, Einführung und Betrieb. Leimeister, J. M. D. Universitätsverlag (ed.). Deutscher Universitätsverlag; ISBN: 978-3824482238, Wiesbaden, Germany, 2005.
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Nachhaltigkeit und Transferkonzept von krebsgmeinschaft.de - Geschäftsmodellkonzeption für eine virtuelle Patienten-Community.Leimeister, J. M.; Daum, M.; Arnold, Y.; Krcmar, H. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 223–248. 2005.
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Pilotierung als Methode zur Erforschung des Community-Engineering.Leimeister, J. M.; Daum, M.; Krcmar, H. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 19–45. Eul-Verlag, 2005.
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Design, implementation and evaluation of trust-supporting components in virtual communities for patients.Leimeister, J. M.; Ebner, W.; Krcmar, H. In Journal of Management Information Systems (JMIS), 21(4), pp. 101–135. 2005.
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OnkoConnect - Exploration mobiler Informationssysteme zur Verbesserung der Lebensqualität krebskranker Jugendlicher.Leimeister, J. M.; Knebel, U.; Daum, M.; Krcmar, H.; Sedlak, R.; Stockklausner, C.; Edelhäuser, M.; Buschmann, J.; Kulozik, A.; Bormuth, A.; Fickartz, S.; Gutschalk, A. In Community Services: Healthcare, H. Krcmar, R. Reichwald, J. Schlichter, U. Baumgarten (eds.), pp. 249–282. Eul-Verlag, 2005.
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Shopping im Internet. Anstöße für die kulturtheoretische Dimensionierung der Konsumsoziologie.Lamla, Jörn; Jacob, Sven. In Das Management der Kunden. Studien zur Soziologie des Shopping, K.-U. Hellmann, D. Schrage (eds.), pp. 196–217. VS-Verlag, Wiesbaden, 2005.
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Exploring mobile information systems for adolescent cancer patients.Leimeister, J. M.; Knebel, U.; Krcmar, H. In Proceedings of the 11th International Conference on Human-Computer Interaction (HCI-I 2005). Las Vegas, 2005.
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Context-aware Group Management in Mobile Environments.Coutand, Olivier; Drögehorn, Olaf; David, Klaus; Nurmi, Petteri; Floreen, Patrik; Kernchen, Ralf; Holtmanns, Silke; Campadello, Stefano; Kanter, Theo; Martin, Miquel; van Eijk, Ronald; Guarneri, Renate. In Proceedings of the 14th IST Mobile & Wireless Communications Summit, pp. 1–6. Dresden, Germany, 2005.
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The paradigm for ubiquitous communication aims at enabling people to contact anyone anywhere and at anytime in a convenient way. Though, this promising vision is mainly addressed from the perspective of individual users. The IST project MobiLife furthers this mobile communications paradigm by developing new applications and services. In addition to the requirements of individual users, MobiLife also considers the needs and concerns of groups of users. This paper presents an architecture that allows the management of mobile groups in heterogeneous communication environments and provides them with context-aware services. The architecture presented has been developed by and proposed within the EU IST-511607 project MobiLife.
MPAS - ein mobiles Patientenassistenzsystem für krebskranke Jugendliche.Leimeister, J. M.; Krcmar, H.; Sedlak, R.; Stockklausner, C.; Edelhäuser, M. In MoCoMed, pp. 83–94. Shaker Verlag GmbH, Freiburg, 2005.
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Patient-oriented design of online support communities.Leimeister, J. M.; Krcmar, H. In Proceedings of the 11th International Conference on Human-Computer Interaction (HCI-I 2005). Las Vegas, 2005.
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Themenschwerpunkt: „Unterschätzte Verbrauchermacht. Potenziale und Perspektiven der neuen Verbraucherbewegung.Lamla, Jörn. In Forschungsjournal Neue Soziale Bewegungen, Jg. 18(Heft 4). 2005.
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Piloting IT-innovations - An approach to researching IT-innovations in complex real-world social settings.Leimeister, J. M.; Krcmar, H. In Information Systems Research Methods (ISRM) - Workshop held in conjunction with International Conference on Information Systems (ICIS) 2005. Association for Information Systems AIS, Las Vegas, 2005.
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Architecture for Higher Level Context Composition.Dargie, Waltenegus; Löffler, Tino; Drögehorn, Olaf; David, Klaus. In Proceedings of the Workshop on Context Awareness for Proactive Systems (CAPS), of CAPS, P. Floréen, G. Lindén, T. Niklander, K. Raatikainen (eds.), pp. 183–187. HIIT Publications, Helsinki, Finland, 2005.
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We propose a distributed architecture for composing implicit contexts out of numerous explicit context atoms. The explicit context atoms are gathered and aggregated at runtime from a computing envi- ronment, and may not initially be intended for a composition task. The architecture supports context-aware systems to reason about implicit contexts in the presence of uncertainty.
Composition of Reusable Higher-level Context.Dargie, Waltenegus; Löffler, Tino; Drögehorn, Olaf; David, Klaus. In Proceedings of the 14th IST Mobile & Wireless Communications Summit, pp. 1–5. Dresden, Germany, 2005.
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Capturing contextual information, especially higher-level contexts enables systems to understand and predict the behaviour of a mobile user. This kind of information is mostly implicit contexts, which abstract a complex state of a situation and can only partly be captured by employing sensors. Higher-level context has the potential to make user-application interaction richer, simpler, and more intuitive. However, composing higher-level contexts from explicit, atomic contexts requires complex and painstaking reasoning procedures to resolve uncertainty due to inconsistent sensor readings and incomplete information. In this paper, we introduce a new approach that assists application developers to take higher-level contexts into account without the need to know the details of atomic contexts. To demonstrate our approach, we will introduce the Context-Aware E-Pad (CAEP) we have designed and implemented. CAEP “observes” the user making a decision and associates with it a set of atomic contexts. Likewise, correlated decisions are mapped to similar associations. By repeatedly “observing” the user making decisions, CAEP can predict user’s wishes and behaviours.
Evaluation der Akzeptanz und des Nutzens einer systematisch entwickelten Virtuellen Community für Krebspatienten.Leimeister, J. M.; Krcmar, H. In Tagungsband der Konferenz Wirtschaftsinformatik. Physica-Verlag, Bamberg, 2005.
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Evaluation of a systematic design for a virtual patient community.Leimeister, J. M.; Krcmar, H. In Journal of Computer-Mediated Communication (JCMC), 10(4). 2005.
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Context awareness in I-centric systems - Dynamic Context Learning Using a Rule-Based Approach -.Drögehorn, Olaf; Haseloff, Sandra; Löffler, Tino; Dargie, Waltenegus; Lau, Sian Lun; David, Klaus. In Proceedings of the International Conference on Intelligent Sensors, Sensor Networks and Information Processing, pp. 211–216. IEEE, Melbourne, Australia, 2005.
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Capturing contextual information, especially higher-level contexts, enables systems to understand and predict the behaviour of a mobile user. This kind of information is mostly implicit, abstracting a complex state of a situation, and can only partly be captured by sensors. Higher-level context has the potential to make user applications simpler and more intuitive. However, composing higher-level contexts from explicit, atomic contexts requires complex procedures to be used and uncertainty due to inconsistent sensor readings and incomplete information to be reduced. In this paper, we introduce a new approach that assists application developers to take higher-level contexts into account without the need to know the details of atomic contexts. To demonstrate our approach, we will introduce the Context-Aware E-Pad (CAEP) we have designed and implemented.
Das Internet der Dinge.Leimeister, J. M.; Krcmar, H. pp. 39–41. 2005.
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Mobile Sportlerakte. Leimeister, J. M.; Krcmar, H. 2005.
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Mobile IT-Systeme im Gesundheitswesen, mobile Systeme für Patienten.Leimeister, J. M.; Krcmar, H.; Horsch, A.; Kuhn, K. In HMD Praxis der Wirtschaftsinformatik, 41(244), pp. 74–85. 2005.
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An Architectural Approach for building Platforms is still needed.Drögehorn, Olaf; David, Klaus. In Proceedings of the 7th International Symposium on Autonomous Decentralized Systems, pp. 118–120. IEEE, Chengdu, China, 2005.
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The vision of pervasive computing and communication will shape individual life in the future. Following this vision, the goal for new business sectors will be to provide an easy way of creating and deploying different kinds of service environments. This paper introduces briefly the problem of overall architectures for service execution environments and identifies an architectural approach, the requirements and design guidelines to built service execution environments and related platforms that are fully compatible with each other.