Publications

Books

• Glenn, Paul Artur. Strategieperspektiven - Ansätze und Sichtweisen zu Strategie und Strategischem Management. Shaker Media (2012).
• Luckner, Stefan, Schröder, Jan, Slamka, Christian, Franke, Markus, Geyer-Schulz, Andreas, Skiera, Bernd, Spann, Martin and Weinhardt, Christof. Prediction Markets - Fundamentals, Designs, and Applications. Gabler-Verlag (2011).
• Glenn, Paul Artur. Strategisches Management industrieller Dienstleistungen aus systemdynamischer Sicht. Sierke (2011).
• Neumann, Andreas W.. Recommender Systems for Information Providers - Designing Customer Centric Paths to Information. Physica-Verlag (Springer) (2009).
• Hoser, Bettina. Analysis of Asymmetric Communication Patterns in Computer Mediated Communication Environments. Universitätsverlag Karlsruhe (2005).
• Geyer-Schulz, A.. Fuzzy Rule-Based Expert Systems and Genetic Machine Learning. Physica-Verlag (1996).
• Geyer-Schulz, Andreas. Fuzzy Rule-Based Expert Systems and Genetic Machine Learning. Physica Verlag (1995).
• Geyer-Schulz, Andreas. Unscharfe Mengen im Operations Research. Verlag der wissenschaftlichen Gesellschaften Österreichs (1986).

Book Contributions

• Steinhauser, Martin, Sonnenbichler, Andreas Christoph and Geyer-Schulz, Andreas. Territorial Safety Networks. .
• Geyer-Schulz, Andreas, Ovelgönne, Michael and Sonnenbichler, Andreas C.. A Social Location-Based Emergency Service to Eliminate the Bystander Effect. In M.S. Obaidat, G.A. Tsihrintzis, J. Filipe (eds.): e-Business and Telecommunications, Springer Berlin / Heidelberg (2012).
• Sotiris Diplaris, Andreas Sonnenbichler, Tomasz Kaczanowski, Phivos Mylonas, Ansgar Scherp, Maciej Janik, Symeon Papadopoulos, Michael Ovelgönne and Yiannis Kompatsiaris. Emerging, Collective Intelligence for personal, organisational and social use. In Nik Bessis and Fatos Xhafa (eds.): Next Generation Data Technologies For Collective Computational Intelligence, Springer-Verlag (2011).
• Geyer-Schulz, Andreas, Kratzer, Felix, Luckner, Stefan, Schröder, Jan, Seifert, Stefan, Skiera, Bernd, Slamka, Christian, Spann, Martin and Weinhardt, Christof. Prognosemärkte als Managementinstrument beim Dienstleistungsexport. In EULVerlag (eds.): Export und Internationalisierung wissensintensiver Dienstleistungen, EULVerlag (2010).
• Geyer-Schulz, Andreas and Hoser, Bettina. Financial Accounting and Eigensystem Analysis. In Book of Short Papers: 7th Meeting of the Classification and Data Analysis Group of the Italian Statistical Society, CLEUP sc (Coop. Libraria Editrice Universita di Padova (2009).
• Franke, Markus, Geyer-Schulz, Andreas and Neumann, Andreas W.. Recommender Services in Scientific Digital Libraries. In Tsihrintzis, George A. and Jain, Lakhmi (eds.): Multi-Media Services in Intelligent Environments, Springer (2008).
• Luckner, Stefan, Schröder, Jan and Slamka, Christian. On the Forecast Accuracy of Sports Prediction Markets. In H. Gimpel, N.R. Jennings, G. Kersten, A. Ockenfels and C. Weinhardt (eds.): Negotiation, Auctions, and Market Engineering, Springer (2008).
• Schaefer, Cora and Hoser, Bettina. Die Beeinflussung von Zentralitätsmaßen der sozialen Netzwerkanalyse durch Gästeaccounts in Internet-Diskussionforen. In Christian Stegbauer (eds.): Netzwerkanalyse und Netzwerktheorie, VS Verlag für Sozialwissenschaften (2008).
• Franke, Markus and Geyer-Schulz, Andreas. Using restricted random walks for library recommendations and knowledge space exploration. In Ma, Matthew and Uchyigit, Gulden (eds.): Personalisation Techniques and Recommender Services, World Scientific Publishing (2007).
• Hoser, Bettina and Geyer-Schulz, Andreas. Organisationseffizienz. In Müller, Claudia and Gronau, Norbert (eds.): Analyse sozialer Netzwerke und Social Software - Grundlagen und Anwendungsbeispiele, Gito-Verlag (2007).
• Gantner, Julian, Geyer-Schulz, Andreas and Thede, Anke. A Single Sign-On Protocol for Distributed Web Applications based on Standard Internet Mechanisms. In Ascenso, Joao, Vasiu, Luminita, Belo, Carlos and Saramago, Monica (eds.): e-Business And Telecommunication Networks, Springer-Verlag (2006).
• Schaefer, Cora, Geyer-Schulz, Andreas and Berninghaus, Siegfried. Personality in Social Networks. A Theroretical Overview. In Dreier, T., Studer, R. and Weinhardt, C. (eds.): Information Management and Market Engineering, universitätsverlag karlsruhe (2006).
• Kunze, Jonas, Geyer-Schulz, Andreas and Berninghaus, Siegfried. Repeated Decision Making. In Dreier, T., Studer, R. and Weinhardt, C. (eds.): Information Management and Market Engineering, universitätsverlag karlsruhe (2006).
• Bomhardt, Christian, Franke, Markus, Gaul, Wolfgang, Geyer-Schulz, Andreas and Thede, Anke. Evaluationsdienste für mobile Lernumgebungen. In Deussen, Peter, Juling, Wilfried and Thum, Bernd (eds.): Nukath, Universitätsverlag Karlsruhe (2004).
• Geyer-Schulz, Andreas and Hahsler, Michael. Comparing Two Recommender Algorithms with the Help of Recommendations by Peers. In WEBKDD 2002 - MiningWeb Data for Discovering Usage Patterns and Profiles, Springer Berlin / Heidelberg (2003).
• Geyer-Schulz, Andreas. Fuzzy Classifier Systems. In Fuzzy Logic: State of the Art, Kluwer Academic Publishers (1993).

Articles

• Martin Stein and Andreas Geyer-Schulz. A Comparison of Five Programming Languages in a Graph Clustering Scenario. Journal of Universal Computer Science 19(3), pp.428 - 456 (2013).
• Stadtfeld, Christoph and Geyer-Schulz, Andreas. Analyzing event stream dynamics in two-mode networks: An exploratory analysis of private communication in a question and answer community. Social Networks 33(4), pp.258 - 272 (2011).
• Hoser, Bettina and Nitschke, Tanja. Questions on Ethics for Research in the Virtually Connected World. Social Networks 32(3), pp.180 - 186 (2010).
• Kunze, Jonas and Geyer-Schulz, Andreas. ECTS-Notenzuweisung: Pragmatische Kohortenbildung. Qualität in der Wissenschaft 4(1), pp.24 - 28 (2010).
• Franke, Markus and Geyer-Schulz, Andreas. An update algorithm for restricted random walk clustering for dynamic data sets . Advances in Data Analysis and Classification 3(1), pp.63 - 92 (2009).
• Neumann, Andreas W., Philipp, Marc and Riedel, Felix. RecoDiver: Browsing Behavior-Based Recommendations on Dynamic Graphs. AI Communications 21(2-3), pp.177 - 183 (2008).
• Franke, Markus and Geyer-Schulz, Andreas. Using restricted random walks for library recommendations and knowledge space exploration. International Journal of Pattern Recognition and Artificial Intelligence 21(2), pp.355 - 373 (2007).
• Geyer-Schulz, Andreas and Thede, Anke. Implementation of Hierarchical Authorization For A Web Based Digital Library. Journal of Systemics, Cybernetics and Informatics 5(2), pp.51 - 56 (2007).
• Hoser, Bettina, Schröder, Jan, Geyer-Schulz, Andreas, Viermetz, Maximilian and Skubacz, Michal. Topic trend detection in newsgroups. Künstliche Intelligenz 3, pp.37 - 40 (2007).
• Eßer, Anke, Franke, Markus, Kamper, Andreas and Möst, Dominik. Future Power Markets. Wirtschaftsinformatik 49(5), pp.335 - 341 (2007).
• Neumann, Andreas W.. Price Elasticity of Digital Scientific Information -- A Field Experiment. IADIS International Journal on WWW/Internet 5(2), (2007).
• Glenn, Paul and Kummert, Sven. Wie Zusatzleistungen richtig vermarktet werden. IO New Management 75(5), (2007).
• Geyer-Schulz, Andreas and Hoser, Bettina. Eigenspectral Analysis of Hermitian Adjacency Matrices for the Analysis of Group Substructures. Journal of Mathematical Sociology 29(4), pp.265 - 294 (2005).
• Thede, Anke, Grebe, Daniela and Hermann, Frederik. Automatisierung des Mädchen-Techniktags. Informatik Forschung und Entwicklung 18(3-4), pp.209 - 211 (2004).
• Geyer-Schulz, Andreas, Neumann, Andreas, Heitmann, Annika and Stroborn, Karsten. Strategic Positioning Options for Scientific Libraries in Markets of Scientific and Technical Information. Journal of Digital Information 4(2), (2003).
• Geyer-Schulz, Andreas. Agententechnologie zur Integration von Empfehlungsdiensten in betriebliche Informationssysteme. visIT 1, pp.10 - 11 (2003).
• Geyer-Schulz, Andreas, Neumann, Andreas and Thede, Anke. An Architecture for Behavior-Based Library Recommender Systems. Information Technology and Libraries 22(4), pp.165 - 174 (2003).
• Geyer-Schulz, Andreas and Bruhn, Peter. Genetic Programming Over Context-Free Languages with Linear Constraints for the Knapsack Problem. Evolutionary Computation 10(1), pp.51 - 74 (2002).
• Gaul, Wolfgang, Geyer-Schulz, Andreas, Hahsler, Michael and Schmidt-Thieme, Lars. eMarketing mittels Recommendersystemen. Marketing ZFP 24, pp.47 - 55 (2002).
• Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximillian. Educational and Scientific Recommender Systems: Designing the Information Channels of the Virtual University. International Journal of Engineering Education 17(2), pp.153 - 163 (2001).
• Geyer-Schulz, Andreas, Hahsler, Michael, Jahn, Maximillian and Schneider, G.. myVU. WU Memo 26, pp.34 - 37 (2000).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, G.. Neu in der Virtuellen Universität. WU Memo 19, (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, G.. Virtual University. WU Memo 22, pp.17 - 18 (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, G.. Virtual University. WU Memo 22, pp.14 - 17 (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, G.. Neues Geographisches Informationssystem der VU. WU Memo 24, (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael, Jahn, Maximillian and Schneider, G.. Virtual University. WU Memo 25, (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, G.. The Virtual University and Its Embedded Intelligent Agents. ÖGAI Journal 18(1), pp.14 - 19 (1999).
• Geyer-Schulz, Andreas, Hahsler, Michael, Bruhn, Peter and Mottl, M.. Genetic Machine Learning and Intelligent Internet Agents. ÖGAI Journal 17(1), pp.18 - 25 (1998).
• Geyer-Schulz, Andreas. MEMO. APL Quote Quad 20(2), pp.12 - 27 (1989).

Conference Proceedings

• Schaefer, Cora and Hoser, Bettina. Effect of guest-accounts as hyper nodes on centrality measures in online networks. .
• Schaefer, Cora. An empirical investigation of the motivations on social network sites. .
• Schaefer, Cora and Hoser, Bettina. Die Auswirkungen eines Gästeaccounts auf Zentralitätsindizes von online Netzwerken. .
• Schaefer, Cora. Motivations and usage patterns on social network sites. .
• Sonnenbichler, Andreas and Bazant, Christopher. Application of a Community Membership Life Cycle Model on Tag-based Communities in Twitter. In Gaul, Wolfgang, Geyer-Schulz, Andreas, Schmidt-Thieme and Kunze, Jonas (eds.): Challenges at the Interface of Data Analysis, Computer Science, and Optimization, Springer, pp.301 - 309 (2012).
• Ovelgönne, Michael and Geyer-Schulz, Andreas. A Comparison of Agglomerative Hierarchical Algorithms for Modularity Clustering. In Gaul, Wolfgang, Geyer-Schulz, Andreas, Schmidt-Thieme and Kunze, Jonas (eds.): Challenges at the Interface of Data Analysis, Computer Science, and Optimization, Springer, pp.225 - 232 (2012).
• Ovelgönne, Michael and Geyer-Schulz. Andreas. An Ensemble Learning Strategy for Graph-Clustering. In David A. Bader, Henning Meyerhenke, Peter Sanders and Dorothea Wagner (eds.): 10th DIMACS Implementation Challenge - Graph Partitioning and Graph Clustering, DIMACS - Center for Discrete Mathematics and Theoretical Computer Science , (2012).
• Challenges at the Interface of Data Analysis, Computer Science, and Optimization. Gaul, Wolfgang and Geyer-Schulz, Andreas and Schmidt-Thieme and Kunze, Jonas .Springer (2012).
• Sonnenbichler, Andreas and Geyer-Schulz, Andreas. ADQL: A Flexible Access Definition and Query Language to Define Access Control Models. In Pierangela Samarati (eds.): Proceedings of the International Conference of Security and Cryptography, (2012).
• Neumann, Andreas W. and Katsiukov, Kiryl. GIRAN: A Dynamic Graph Interface to Neighborhoods of Related Articles. In Gaul, Wolfgang, Geyer-Schulz, Andreas, Schmidt-Thieme and Kunze, Jonas (eds.): Challenges at the Interface of Data Analysis, Computer Science, and Optimization, Springer, pp.271 - 279 (2012).
• Kunze, Jonas and Geyer-Schulz, Andreas. ECTS Grades: Combination of Norm- and Criterion-Referenced Grading. In Gaul, Wolfgang, Geyer-Schulz, Andreas, Schmidt-Thieme and Kunze, Jonas (eds.): Challenges at the Interface of Data Analysis, Computer Science, and Optimization, Springer, pp.557 - 565 (2012).
• Krempels, Karl-Heinz, Terwelp, Christoph and Sonnenbichler, Andreas C.. Context Aware Document Management Systems. In Second Workshop on Context-Systems Design, Evaluation and Optimisation {(CoSDEO} 2011), (2011).
• Steinhauser, Martin, Sonnenbichler, Andreas Christoph and Geyer-Schulz, Andreas. Supporting Safety Through Social Territorial Networks. In Marca, David (eds.): Proceedings of the International Conference on e-Business, SciTePress, pp.91 - 99 (2011).
• Stadtfeld, Christoph, Geyer-Schulz, Andreas and Allmendinger, Otto. The Influence of Distance, Time, and Communication Network Structures on the Choice of Communication Partners. In IEEE SocialCom 2011: The Third IEEE International Conference on Social Computing, IEEE Press, pp.402 - 409 (2011).
• Geyer-Schulz, Andreas, Ovelgönne, Michael and Sonnenbichler, Andreas. Getting Help In A Crowd - A Social Emergency Alert Service. In Proceedings of the International Conference on e-Business, INSTICC, (2010).
• Diplaris, S, Sonnenbichler, Andreas C., Kaczanowski, T, Mylonas, P, Scherp, A, Janik, M, Papadopoulos, S and Kompatsiaris, Y. WeKnowIt: Emerging, Collective Intelligence for Personal, Organisational and Social Use. In Proceedings of the 7th Extended Semantic Web Conference, (2010).
• Ovelgönne, Michael, Sonnenbichler, Andreas C. and Geyer-Schulz, Andreas. Social Emergency Alert Service - A Location-Based Privacy-Aware Personal Safety Service. In Proceedings of the 2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies, IEEE Computer Society, pp.84 - 89 (2010).
• Ovelgönne, Michael, Geyer-Schulz, Andreas and Stein, Martin. Randomized Greedy Modularity Optimization for Group Detection in Huge Social Networks. In SNA-KDD'10: Proceedings of the 4th Workshop on Social Network Mining and Analysis, ACM, (2010).
• Sonnenbichler, Andreas, Ovelgönne, Michael and Geyer-Schulz, Andreas. Using Social Networks To Break The Bystander Effect. In University of Trento, Italy (eds.): Sunbelt XXX International Social Network Conference, (2010).
• Ovelgönne, Michael. On the Hierarchicalness of Q&A Posting Networks. In GROUP '10: Proceedings of the ACM 2010 international conference on Supporting group work, ACM, pp.117 - 120 (2010).
• Ovelgönne, Michael and Geyer-Schulz, Andreas. Cluster Cores and Modularity Maximization. In Fan, Wei, Hsu, Wynne, Webb, Geoffrey I., Liu, Bing, Zhang, Chengqi, Gunopulos, Dimitrios and Wu, Xindong (eds.): ICDMW '10. 10th IEEE International Conference on Data Mining Workshops (Sydney, Australia), IEEE Computer Society, pp.1204 - 1213 (2010).
• Solachidis, Vassilios, Mylonas, Phivos, Geyer-Schulz, Andreas, Hoser, Bettina, Ciravegna, Fabio, Staab, Steffen, Smrz, Pavel, Chapman, Sam and Kompatsiaris, Yiannis. Efficient Media Exploitation Towards Collective Intelligence. In Bock, H.-H., Gaul, W., Vichi, M., Arabie, Ph., Baier, D., Critchley, F., Decker, R., Diday, E., Greenacre, M., Lauro, C., Meulman, J., Monari, P., Nishisato, S., Ohsumi, N., Opitz, O., Ritter, G., Schader, M., Weihs, C., Fink, Andreas, Lausen, Berthold, Seidel, Wilfried and Ultsch, Alfred (eds.): Advances in Data Analysis, Data Handling and Business Intelligence , Springer Berlin Heidelberg, pp.723 - 732 (2009).
• Sonnenbichler, Andreas. A Community Membership Life Cycle Model. In University of California, San Diego (eds.): Sunbelt XIX International Social Network Conference, (2009).
• Neumann, Andreas W. and Geyer-Schulz, Andreas. Applying Small Sample Test Statistics for Behavior-Based Recommendations. In Christine Preisach, Hans Burkhardt, Lars Schmidt-Thieme and Reinhold Decker (eds.): Data Analysis, Machine Learning, and Applications, Springer, pp.541 - 549 (2008).
• Franke, Markus, Hoser, Bettina and Schröder, Jan. On the Analysis of Irregular Stock Market Trading Behaviour. In Christine Preisach, Hans Burkhardt , Lars Schmidt-Thieme and Reinhold Decker (eds.): Data Analysis, Machine Learning, and Applications, Springer, pp.355 - 362 (2008).
• Slamka, Christian, Luckner, Stefan, Seemann, Thomas and Schröder, Jan. An Empirical Investigation of the Forecast Accuracy of Play-Money Prediction Markets and Professional Betting Markets. In Proceedings of the 16th European Conference on Information Systems (ECIS), 2008, Galway, Ireland, (2008).
• Glenn, Paul Artur. Preis- und Angebotsmanagement bei Service-Leistungen: Mehr als das Produkt - Services als Mehrwert etablieren und verkaufen. In Angebotsmanagement in produzierenden Unternehmen, (2008).
• Glenn, Paul Artur. Professionelles Pricing für Services. In Service intelligent managen, (2008).
• Thede, Anke and Geyer-Schulz, Andreas. Using Shadow Prices To Reveal Personal Preferences In a Two-Stage Assignment Problem. In Operations Research Jahrestagung 2006, (2007).
• Franke, Markus, Kamper, Andreas and Eßer, Anke. Pricing Energy in a Multi-Utility Market. In Reinhold Decker and Hans-J. Lenz (eds.): Advances in Data Analysis: Proceedings of the 30th Annual Conference of the German Classification Society (GfKl), Springer, pp.433 - 440 (2007).
• Schaefer, Cora. Personality in Social Networks. In Reinhold Decker and Hans-J. Lenz (eds.): Advances in Data Analysis: Proceedings of the 30th Annual Conference of the German Classification Society (GfKl), Springer, (2007).
• Hoser, Bettina and Schröder, Jan. Automatic Determination of Clusters. In Karl-Heinz Waldmann, Ulrike Stocker (eds.): Operations Research Proceedings 2006, Springer Berlin Heidelberg, pp.439 - 444 (2007).
• Franke, Markus and Geyer-Schulz, Andreas. A Method for Analyzing the Asymptotic Behavior of the Walk Process in Restricted Random Walk Cluster Algorithm. In Decker, Reinhold and Lenz, Hans-J. (eds.): Advances in Data Analysis, Springer Verlag, pp.51 - 59 (2007).
• Neumann, Andreas W.. Pricing of Digital Scientific Information. In Piet Kommers (eds.): Proceedings of the IADIS International Conference e-Society, IADIS Press, pp.105 - 112 (2007).
• Neumann, Andreas W.. Motivating and Supporting User Interaction with Recommender Systems. In Proceedings of the 11th European Conference on Research and Advanced Technology for Digital Libraries, Springer, pp.428 - 439 (2007).
• Schröder, Jan, Franke, Markus, Gaertler, Marco and Hoser, Bettina. Introducing Social Network Analysis to Stock Markets. In Sunbelt XXVII International Social Network Conference,, (2007).
• Franke, Markus, Hoser, Bettina and Schröder, Jan. Enlarging personal networks through transitive clustering. In Sunbelt XXVII International Social Network Conference,, (2007).
• Hoser, Bettina, Decker, David and Schröder, Jan. Efficiency of Communication. In Sunbelt XXVII International Social Network Conference,, (2007).
• Anke Eßer, Markus Franke, Andreas Kamper, Dominik Möst and Otto Rentz. Simulation einer Marktplattform für den Handel mit dezentral erzeugter elektrischer Energie. In Proceedings Internationale Energiewirtschaftstagung (CDROM), (2007).
• Brendel, Christian, Nestle, David, Ringelstein, Jan, Eßer, Anke, Möst, Dominik, Rentz, Otto, Franke, Markus and Geyer-Schulz, Andreas. Marktmodell für ein dezentral organisiertes Energiemanagement im elektrischen Verteilnetz - Grundlage für ein internetbasiertes Managementsystem. In Energietechnische Gesellschaft im VDE (eds.): Internationaler ETG Kongreß 2007: Webbasierte Automatisierung in der Energietechnik, VDI Verlag, (2007).
• Glenn, Paul Artur. Pricing im Service. In Service Marketing, (2007).
• Franke, Markus, Geyer-Schulz, Andreas and Neumann, Andreas. Building Recommendations from Random Walks on Library OPAC Usage Data. In Zani, Sergio, Cerioli, Andrea, Riani, Marco and Vichi, Maurizio (eds.): Data Analysis, Classification and the Forward Search, Springer, pp.235 - 246 (2006).
• Franke, Markus, Geyer-Schulz, Andreas and Hoser, Bettina. On the Analysis of Asymmetric Directed Communication Structures in Electronic Election Markets. In Billari, F.C., Fent, Th., Prskawetz, A. and Scheffran, J. (eds.): Agent-Based Computational Modelling. Applications in demography, social, economic and environmental sciences., Physica , pp.37 - 59 (2006).
• Kunze, Jonas. Design Problems of Complex Economic Experiments. In Spiliopoulou, Myra, Kruse, Rudolf, Nürnberger, Andreas, Borgelt, C. and Gaul, Wolfgang (eds.): From Data and Information Analysis to Knowledge Engineering, Springer, pp.494 - 501 (2006).
• Hoser, Bettina, Hotho, Andreas, Jäschke, Robert, Schmitz, Christoph and Stumme, Gerd. Semantic Network Analysis of Ontologies. In York Sure and John Domingue (eds.): The Semantic Web, Springer Berlin / Heidelberg, pp.514 - 529 (2006).
• Geyer-Schulz, Andreas and Thede, Anke. Implementation of Hierarchical Authorization For A Web Based Digital Library. In Zinn, Dale, Chu, Hsing-Wei, Savoie, Michael J. and Srivastava, Smriti (eds.): The 3rd International Conference on Cybernetics and Information Technologies, Systems and Applications, (2006).
• Hoser, Bettina and Bierhance, Thomas. Finding Cliques in directed weighted graphs using complex hermitian adjacency matrices. In Proceedings of the 30th Annual COnference of the German Classification Society, Springer, pp.83 - 90 (2006).
• Schaefer, Cora. Personality Influences on Social Networks. In European Association of Personality Psychology (eds.): Proceedings of the 13th European Conference on Personality, (2006).
• Schaefer, Cora. Kommunikationsstrukturen im Internet. In DGPs (eds.): Proceedings of the 45th Congress of the German Association of Psychology, DGPs2006, (2006).
• Schaefer, Cora. Effects of a groupware in a Virtual Consulting Firm. In German Society for Online Research (eds.): Proceedings of the German Online Reserach Conference, (2006).
• Kunze, Jonas and Gündüz, Yalin. Decision Patterns and Information Availability in the Beer Distribution Game. In Proceedings of the 24th International System Dynamics Conference, (2006).
• Schepperle, Heiko, Barz, Christiane, Böhm, Klemens, Kunze, Jonas, Laborde, Carolina M., Seifert, Stefan and Stockmar, Kendra. Auction Mechanisms for Traffic Management. In Seifert, Stefan and Weinhardt, Christof (eds.): Group Decision and Negotiation (GDN) 2006, Universitätsverlag Karlsruhe, pp.214 - 217 (2006).
• Glenn, Paul Artur. Margensicherung durch optimale Vertriebsstrategien und erfolgreiche Kundenbindung an Stelle von Preiskampf und reinem Produktfokus. In Value-based Selling: Kunden- und mehrwertorientierter Vertrieb im Maschinen- und Anlagenbau, (2006).
• Franke, Markus and Thede, Anke. Clustering of Large Document Sets with Restricted Random Walks on Usage Histories. In Weihs, Claus and Gaul, Wolfgang (eds.): Classification - the Ubiquitous Challenge, Springer, pp.402 - 409 (2005).
• Bettina Hoser, Andreas Geyer-Schulz. Complete decomposition of communication patterns social networks. In Deutsche Physikalische Gesellschaft (eds.): Verhandlungen der Deutschen Physikalischen Gesellschaft, (2005).
• Franke, Markus, Rolli, Daniel, Kamper, Andreas, Dietrich, Antje, Geyer-Schulz, Andreas, Lockemann, Peter, Schmeck, Hartmut and Weinhardt, Christof. Impacts of Distributed Generation from Virtual Power Plants. In Proceedings of the 11th Annual International Sustainable Development Research Conference, pp.1 - 12 (2005).
• Franke, Markus and Geyer-Schulz, Andreas. Using Restricted Random Walks for Library Recommendations. In Gulden Uchyigit (eds.): Web Personalization, Recommender Systems and Intelligent User Interfaces, INSTICC Press, pp.107 - 115 (2005).
• Franke, Markus, Geyer-Schulz, Andreas and Hoser, Bettina. Analyzing Trading Behavior in Transaction Data of Electronic Election Markets. In Baier, Daniel, Decker, Reinhold and Schmidt-Thieme, Lars (eds.): Data Analysis and Decision Support, Springer, pp.222 - 230 (2005).
• Hoser, Bettina, Blume, Michael, Schröder, Jan and Franke, Markus. CPS - Company Positioning System. In Stasko, John and Ward, Matt (eds.): Proceedings, IEEE Operations Center, pp.59 - 60 (2005).
• Proceedings of the First Workshop on Semantic Network Analysis . Gerd Stumme and Bettina Hoser and Christoph Schmitz and Harith Alani .CEUR Proceedings (2005).
• Geyer-Schulz, Andreas and Thede, Anke. A Two-Phase Grammar-Based Genetic Algorithm for a Workshop Scheduling Problem. In Baier, Daniel and Wernecke, Klaus-Dieter (eds.): Innovations in Classification, Data Science, and Information Systems, Springer-Verlag, pp.535 - 543 (2004).
• Hopmann, Jörg and Thede, Anke. Applicability of Customer Churn Forecasts in a Non-Contractual Setting. In Baier, Daniel and Wernecke, Klaus-Dieter (eds.): Innovations in Classification, Data Science, and Information Systems, Springer-Verlag, pp.330 - 337 (2004).
• Bettina Hoser, Andreas Geyer-Schulz. Eigen System Analysis of Hermitian Adjacency Matrices of Perturbed Star Graphs. In Center for Methodology and Informatics, Institute of Social Siences at Faculty of Social Siences, University of Ljubliana, Slovenia (eds.): Sunbelt XXIV International Social Network Conference, Birografika BORI, d.o.o., Ljubliana, (2004).
• Schröder, Jan, Hoser, Bettina and Geyer-Schulz, Andreas. Eigen System Analysis of Hermitian Adjacency Matrices as a Tool to Explain Group and Subgroup Behavior over Time. In Center for Methodology and Informatics, Institute of Social Siences at Faculty of Social Siences, University of Ljubliana, Slovenia (eds.): Sunbelt XXIV International Social Network Conference, Birografika BORI, d.o.o., Ljubliana, (2004).
• Gantner, Julian, Geyer-Schulz, Andreas and Thede, Anke. A Single Sign-On Protocol for Distributed Web Applications based on Standard Internet Mechanisms. In Ascenso, João, Belo, Carlos, Casiu, Luminita, Saramago, Mónica and Coelhas, Helder (eds.): 1st International Conference on E-business and Telecommunication Networks, INSTICC Press, pp.191 - 198 (2004).
• Franke, Markus and Geyer-Schulz, Andreas. Automated Indexing with Restricted Random Walks on Large Document Sets . In Heery, Rachel and Lyon, Liz (eds.): Research and Advanced Technology for Digital Libraries, Springer, pp.232 - 243 (2004).
• Geyer-Schulz, Andreas and Hahsler, Michael. Evaluation of Recommender Algorithms for an Internet Information Broker based on Simple Association-Rules and on Repeat-Buying Theory. In Zaiane, Osmar R., Srivastava, Jaideep, Spiliopoulou, Myra and Masand, Brij (eds.): WEBKDD 2002, Springer, (2003).
• Böhm, Walter, Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximilian. Repeat-buying Theory and its Application for Recommender Services. In Opitz, Otto and Schwaiger, Manfred (eds.): Exploratory Data Analysis in Empirical Research, Springer-Verlag, pp.229 - 239 (2003).
• Geyer-Schulz, Andreas, Hahsler, Michael, Neumann, Andreas and Thede, Anke. An Integration Strategy for Distributed Recommender Services in Legacy Library Systems. In Schader, Martin, Gaul, Wolfgang and Vichi, Maurizio (eds.): Between Data Science and Applied Data Analysis, Springer-Verlag, pp.412 - 420 (2003).
• Geyer-Schulz, Andreas, Hahsler, Michael, Neumann, Andreas and Thede, Anke. Behavior-Based Recommender Systems as Value-Added Services for Scientific Libraries. In Bozdogan, Hamparsum (eds.): Statistical Data Mining & Knowledge Discovery, Chapman & Hall / CRC, pp.433 - 454 (2003).
• Geyer-Schulz, Andreas, Hahsler, Michael and Thede, Anke. Comparing Simple Association-Rules and Repeat-Buying Based Recommender Systems in a B2B Environment. In Schader, Martin, Gaul, Wolfgang and Vichi, Maurizio (eds.): Between Data Science and Applied Data Analysis, Springer-Verlag, pp.421 - 429 (2003).
• Geyer-Schulz, Andreas, Neumann, Andreas and Thede, Anke. Others also use. In Koch, Traugott and Solvberg, Ingeborg Torvik (eds.): Research and Advanced Technology for Digital Libraries , Springer, pp.113 - 125 (2003).
• Hoser, Bettina and Geyer-Schulz, Andreas. Use of Hermitian matrices in the analysis of newsgroups (abstract). In Deutsche Physikalische Gesellschaft (eds.): Verhandlungen der Deutschen Physikalischen Gesellschaft, Physik-Verlag GmbH, (2003).
• Geyer-Schulz, Andreas, Hahsler, Michael, Neumann, Andreas and Thede, Anke. Recommenderdienste für wissenschaftliche Bibliotheken und Bibliotheksverbünde. In Geyer-Schulz, Andreas and Taudes, Alfred (eds.): Informationswirtschaft, Köllen Druck+Verlag GmbH, Bonn, pp.43 - 57 (2003).
• Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximilian. Recommendations for Virtual Universities from Observed User Behavior. In Wolfgang Gaul and Gunter Ritter (eds.): Classification, Automation, and New Media, Springer-Verlag, pp.273 - 280 (2002).
• Neumann, Andreas, Heitmann, Annika and Stroborn, Karsten. Auswirkungen der Digitalisierung auf Fachinformationsmärkte am Beispiel kostenpflichtiger Dienste hybrider Bibliotheken. In Klaus P. Jantke, Wolfgang S. Wittig and Joerg Herrmann (eds.): Von e-Learning bis e-Payment, Akademischen Verlagsgesellschaft, pp.365 - 376 (2002).
• Geyer-Schulz, Andreas and Hahsler, Michael. Software Reuse with Analysis Patterns. In Jack D. Becker and G. W. K. Willis (eds.): Proceedings of the 8th Americas Conference on Information Systems (AMCIS 2002), pp.1156 - 1165 (2002).
• Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximillian. A Customer Purchase Incidence Model Applied to Recommender Services. In Kohavi, Ron, Masand, Brij M., Spiliopoulou, Myra and Srivastava, Jaideep (eds.): WEBKDD 2001, Springer-Verlag, pp.25 - 47 (2002).
• Thede, Anke, Schmidt, Albrecht and Merz, Christian. Integration of Goods Delivery Supervision into E-Commerce Supply Chain. In Ludger Fiege, Gero Mühl and Uwe Wilhelm (eds.): Electronic Commerce, Second International Workshop, Springer Verlag, Berlin, pp.206 - 218 (2001).
• Thede, Anke, Schmidt, Albrecht and Merz, Christian. Integration von Transportdaten in den E-Commerce Workflow. In K. Bauknecht, W. Brauer and Th. Mück (eds.): Informatik 2001, Oestereichische Computer Gesellschaft, pp.865 - 870 (2001).
• Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximilian. Wissenschaftliche Recommendersysteme in Virtuellen Universitäten. In H.-J. Appelrath, R. Beyer, U. Marquardt, H.C. Mayr and C. Steinberger (eds.): Symposium Unternehmen Hochschule, pp.101 - 114 (2001).
• Geyer-Schulz, Andreas, Hahsler, Michael and Jahn, Maximilian. myVU. In W. Gaul, O. Opitz and M. Schader (eds.): Data Analysis, Springer, pp.447 - 447 (2000).
• Geyer-Schulz, Andreas and Hahsler, Michael. Automatic Labelling of References for Internet Information Systems. In R. Decker and W. Gaul (eds.): Classification and Information Processing at the Turn of the Millenium, Springer, pp.451 - 459 (2000).
• Geyer-Schulz, Andreas, Hahsler, Michael and Schneider, Georg. The Virtual University as a Network Economy. In Heinrich C. Mayer, Claudia Steinberger, Hans-Jürgen Appelrath and Uwe Marquardt (eds.): Unternehmen Hochschule '99, Informatik'99. Workshop-Unterlagen, GI, pp.75 - 86 (1999).
• Böhm, W. and Geyer-Schulz, A.. Exact Uniform Initialization for Genetic Programming. In Rik Belew and Michael Vose (eds.): Foundations of Genetic Algorithms, Morgan Kaufmann, pp.379 - 407 (1997).
• Geyer-Schulz, A.. The {M}{I}{T} Beer Distribution Game Revisited. In F. Herrera and J. L. Verdegay (eds.): Genetic Algorithms and Soft Computing, Physica-Verlag, pp.658 - 682 (1996).
• Geyer-Schulz, A.. Fuzzy Genetic Programming and Dynamic Decision Making. In William R. Wells and Ashok Iyer (eds.): Proceedings of the Eleventh International Conference on Systems Engineering, Howard R. Hughes College of Engineering, pp.686 - 691 (1996).
• Böhm, W. and Geyer-Schulz, A.. Exact Uniform Initialization for Genetic Programming. In Belew, R. and Vose, M. (eds.): Proc. FOGA'4,, pp.255 - 269 (1996).
• Geyer-Schulz, A.. Fuzzy Classifier Systems. In R. Lowen and M. Roubens (eds.): Abstracts of the 4th IFSA World Conference IFSA'91: Computer, Management and Systems Science, IFSA, pp.90 - 94 (1991).
• Franke, Markus and Geyer-Schulz, Andreas. A Method for Analyzing the Asymptotic Behavior of the Walk Process in Restricted Random Walk Cluster Algorithm. pp.51 - 58 .

Technical Reports

• Geyer-Schulz, Andreas and Ovelgönne, . Vermutungen oder: Wie man die DIMACS Modularity Clustering Challenge gewinnt. Technical Report Informationsdienste und elektronische Märkte, KIT (2012).
• Geyer-Schulz, Andreas, Meyer-Waarden, Lars, Kunze, Jonas and Sonnenbichler, Andreas. Blue Collar Science: The Student as a (Marketing) Scientist . Technical Report Informationsdienste und elektronische Märkte, KIT (2012).
• Sonnenbichler, Andreas, Ovelgönne, Michael, Schwagereit, Felix and Giannakidou, Eirini. Implementation of Service Modules for Cross-Usage Of Intelligence. Technical Report Karlsruhe Institute of Technology (2011).
• Hirsch, Alexander and Kunze, Jonas. GfKl Conference Proceedings: Notes on Typesetting the Abstract Volume. Technical Report Lehrstuhl für Informationsdienste und Elektronische Märkte, Institut für Informationswirtschaft und -management, KIT (2011).
• Kunze, Jonas and Geyer-Schulz, Andreas. ECTS-Noten: Verfahren zur Kohortenberechnung. Technical Report Lehrstuhl für Informationsdienste und Elektronische Märkte, Institut für Informationswirtschaft und -management, KIT (2010).
• Sonnenbichler, Andreas C.. A Community Membership Life Cycle Model. Technical Report Karlsruhe Institute of Technology (2010).
• Ovelgönne, Michael, Hoser, Bettina and Sonnenbichler, Andreas. Community Analysis Tool and Evaluation. Technical Report Karlsruhe Institute of Technology (2009).
• Lanfranchi, Dr. V., Scherp, Dr. Ansgar, Kontopoulos, Costis, Slingsby, S., Janik, Maciej, Sonnenbichler, Andreas, Geyer-Schulz, Prof. Dr. Andreas, Ovelgönne, Michael and Kompatsiaris, Dr. Yiannis. D7.2 Emergency response and consumers’ social group case study design and specification. Technical Report Telefónica I+D (TID) (2009).
• Ovelgönne, Michael and Stein, Martin. D4.1.1 Initial community analysis tool. Technical Report Karlsruhe Institute of Technology (2009).
• Bakaimis, Byron, Garcia, Lluis, Whiterwam, Peter, Slingsby , Sheila, Kompatsiaris, Yiannis , Lanfranchi, Vitaveska , Scherp, Ansgar , Hoser, Bettina and Cuadrado, Ana Flores. D8.3.1 Initial Exploitation Plan. Technical Report Telefónica I+D (TID) (2009).
• Sonnenbichler, Andreas and Schwagereit, Felix. D4.2 Prototype of community management platform. Technical Report Karlsruhe Institute of Technology (KIT) (2009).
• Ovelgönne, Michael and Geyer-Schulz, Prof. Dr. Andreas. D3.2 Report on methods and tools for user feedback analysis. Technical Report Karlsruhe Institute of Technology (KIT) (2009).
• Ovelgönne, Michael, Hoser, Bettina and Sonnenbichler, Andreas. D4.1.2 Community Analysis Tool and Evaluation (public version). Technical Report Karlsruhe Institute of Technology (KIT) (2009).
• Ovelgönne, Michael, Hoser, Bettina and Sonnenbichler, Andreas. D4.1.2 Community Analysis Tool and Evaluation (confidential version). Technical Report Karlsruhe Institute of Technology (KIT) (2009).
• Preibusch, Sören, Hoser, Bettina, Gürses, Seda and Berendt, Bettina. Ubiquitous social networks: opportunities and challenges for privacy-aware user modelling. Technical Report DIW Berlin (2007).
• Hoser, Bettina and Geyer-Schulz, Andreas. Use of SNA Methods in technical environments, e.g. controller networks. Technical Report Universität Karlsruhe (TH) (2007).
• Rentz, Otto, Eßer, Anke, Möst, Dominik, Geyer-Schulz, Andreas, Franke, Markus, Schmeck, Hartmut and Kamper, Andreas. Analyse der Auswirkungen von Strompreissignalen auf das Lastverhalten ausgewählter Verbraucher. Technical Report Universität Karlsruhe (TH) (2006).
• Hoser, Bettina and Geyer-Schulz, Andreas. Follow-Up Report of the Project: Eigensystem Analysis of Newsgroups. Technical Report Universität Karlsruhe (TH) (2006).
• Geyer-Schulz, Andreas and Hahsler, Michael. Pinboards and Virtual Libraries. Technical Report Institut für Informationsverarbeitung und -wirtschaft, Wirtschaftsuniverität Wien (2001).

PhD Thesis

• Ovelgönne, Michael. Scalable Algorithms for Community Detection in Very Large Graphs. (2011).
• Neumann, Andreas W.. Recommender Systems for Scientific and Technical Information Providers. (2008).
• Schröder, Jan. Manipulations in Prediction Markets - Analysis of Trading Behaviour not Conforming with Trading Regulations. (2008).
• Franke, Markus. An Update Algorithm for Restricted Random Walk Clusters. (2007).
• Thede, Anke. Ein Workshopzuteilungsproblem als zweistufige Auktion zur Enthüllung privater Präferenzen. (2006).
• Hoser, Bettina. Analysis of Asymmetric Communication Patterns in Computer Mediated Communication Environments. (2005).