Dr. Christoph Scholz

Hinweis: Christoph Scholz ist seit dem 30.04.2015 nicht mehr im Fachgebiet beschäftigt.

Dr. Christoph Scholz
E-Mail: scholz@cs.uni-kassel.de

Research Interests

I am interested in the following topics of research:

• Machine Learning
• Data Mining
• Social Network Analysis
• Link Prediction
• Indoor Localization

Conference Talks

• ISMIS 2014, Roskilde, Denmark
• ASONAM 2013, Niagara Falls, Canada
• ICWSM 2013, Boston, MA, USA
• SocialCom 2012, Amsterdam, The Netherlands
• Hypertext 2012, Milwaukee, WI, USA
• ECML-PKDD 2011, Athens, Greece

PC Chair

• 5th International Workshop on Mining Ubiquitous and Social Environments (MUSE), 15-19 September 2014, Nancy, France
• 4th International Workshop on Mining Ubiquitous and Social Environments (MUSE), 23-27 September 2013, Prague, Czech Republic

PC Member

• The 2014 IEEE International Conference on Cyber, Physical and Social Computing, 01-03 September 2014, Taipei, Taiwan
• 5th International Workshop on Modeling Social Media: Mining Big Data in Social Media and the Web (MSM 2014), 7 April 2014, Seoul, Korea.
• The 2013 IEEE International Conference on Cyber, Physical and Social Computing, 20-23 August 2013, Beijing, China
• 24th ACM Conference on Hypertext and Social Media, 1–3 May 2013, Paris, France
• Workshop “Knowledge Discovery, Data Mining, Maschinelles Lernen 2010” der Fachgruppe KDML, 4-6 October 2010, Kassel, Germany

Teaching / Lehre

Sommersemester 2014

• Internet-Suchmaschinen

Sommersemester 2013

• Internet-Suchmaschinen
• Einführung in das Schreiben wissenschaftlicher Texte (im Bereich Informatik)

Wintersemester 2012/2013

• Knowledge Discovery
• Praktikum: Knowledge Discovery
• Seminar: Data Mining für die Analyse sozialer Netzwerke

Sommersemester 2012

• Einführung in das Schreiben wissenschaftlicher Texte (im Bereich Informatik)

Wintersemester 2011/2012

• Seminar: Soziale Netzwerkanalyse: Twitter

Sommersemester 2011

• Internet-Suchmaschinen
• Praktikum: Internet-Suchmaschinen

Wintersemester 2010/2011

• Seminar: Soziale Netzwerkanalyse

Sommersemester 2010

• Algorithmen und Datenstrukturen

Projects

• LOEWE Project VENUS
• Ubicon

Publications

2014

• On the Predictability of Recurring Links in Networks of Face-to-Face Proximity. Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd accepted/to appear (ed.) (2014).

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• On the Evolution of Social Groups During Coffee Breaks. Atzmueller, Martin; Ernst, Andreas; Krebs, Friedrich; Scholz, Christoph; Stumme, Gerd accepted/to appear (ed.) (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 (2014). 57

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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 (2014).

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  The combination of ubiquitous and social computing is an emerging research area which integrates different but complementary methods, techniques and tools. In this paper, we focus on the Ubicon platform, its applications, and a large spectrum of analysis results. Ubicon provides an extensible framework for building and hosting applications targeting both ubiquitous and social environments. We summarize the architecture and exemplify its implementation using four real-world applications built on top of Ubicon. In addition, we discuss several scientific experiments in the context of these applications in order to give a better picture of the potential of the framework, and discuss analysis results using several real-world data sets collected utilizing Ubicon.

  

  
• Predictability of Evolving Contacts and Triadic Closure in Human Face-to-Face Proximity Networks. Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd (2014). 4(217)

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• Unsupervised and Hybrid Approaches for On-Line RFID Localization with Mixed Context Knowledge. Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd (2014).

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• On the Predictability of Talk Attendance at Academic Conferences. Scholz, Christoph; Illig, Jens; Atzmueller, Martin; Stumme, Gerd (2014).

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• Die VENUS-Entwicklungsmethode Eine interdisziplinäre Methode für soziotechnische Softwaregestaltung Atzmüller, 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; Niemczyk, S., eds.) (2014). (Vol. 1)

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• Proceedings of the 2014 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2014) Atzmueller, Martin; Scholz, Christoph (2014). ECML/PKDD 2014, Nancy, France.

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• Mining Social Links for Ubiquitous Knowledge Engineering. Scholz, Christoph; Macek, Bjoern-Elmar; Atzmueller, Martin; Doerfel, Stephan; Stumme, Gerd K. David, Geihs, K., Leimeister, J. M., Roßnagel, A., Schmidt, L., Stumme, G., Wacker, A. (eds.) (2014). 109-129.

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  Exploiting social links is an important issue for enhancing ubiquitous knowledge engineering because they are a substitute for a wide range of properties depending on which relation spans the link: in case of human face-to-face contacts, similar locations or potential knowledge transfer for the people in contact can be derived. This information can be used to improve the quality of ubiquitous services as localization or recommendation systems. We capture this information by deploying active RFID setups at a variety of contexts. In this chapter, we focus especially on working groups and conferences and discuss and evaluate the achieved improvements using the gathered data.

  

  
• 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 K. David, Geihs, K., Leimeister, J. M., Roßnagel, A., Schmidt, L., Stumme, G., Wacker, A. (eds.) (2014). 261-275.

  BibTeX EndNote URL

  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.

  

  
• On the Predictability of Talk Attendance at Academic Conferences. Scholz, Christoph; Illig, Jens; Atzmueller, Martin; Stumme, Gerd (2014). abs/1407.0613

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• Link Prediction and the Role of Stronger Ties in Networks of Face-to-Face Proximity. Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd (2014). abs/1407.2161

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2013

• On the Evolution of Contacts and Communities in Networks of Face-to-Face Proximity. Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd (2013).

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• How Do People Link? Analysis of Contact Structures in Human Face-to-Face Proximity Networks. Scholz, Christoph; Atzmueller, Martin; Kibanov, Mark; Stumme, Gerd in ASONAM '13 (2013). 356--363.

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• Conferator - a Social System for Conference and Contact Management. Atzmueller, Martin; Kibanov, Mark; Scholz, Christoph; Stumme, Gerd (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 (2013).

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• Proceedings of the 2013 International Workshop on Mining Ubiquitous and Social Environments (MUSE 2013) Atzmueller, Martin; Scholz, Christoph (2013). ECML/PKDD 2013, Prague, Czech Republic.

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• Rechtliche Ausgestaltung sozialer Konferenzplattformen. Schulz, Thomas; Skistims, Hendrik; Zirfas, Julia; Atzmueller, Martin; Scholz, Christoph (2013). 2 60--65.

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• Evolution of Contacts and Communities in Networks of Face-to-Face Proximity (Extended Abstract, Resubmission). Kibanov, Mark; Atzmueller, Martin; Scholz, Christoph; Stumme, Gerd (2013).

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2012

• On the Predictability of Human Contacts: Influence Factors and the Strength of Stronger Ties. Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd (2012).

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• Anatomy of a Conference. Macek, Bjoern Elmar; Scholz, Christoph; Atzmueller, Martin; Stumme, Gerd (2012). 245-254.

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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 (2012).

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2011

• Enhancing Social Interactions at Conferences. Atzmüller, Martin; Benz, Dominik; Doerfel, Stephan; Hotho, Andreas; Jäschke, Robert; Macek, Bjoern Elmar; Mitzlaff, Folke; Scholz, Christoph; Stumme, Gerd (2011). 53(3) 101--107.

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• Hardness and Non-Approximability of Bregman Clustering Problems. Ackermann, Marcel R.; Blömer, Johannes; Scholz, Christoph (2011). 18 20.

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• Resource-Aware On-Line RFID Localization Using Proximity Data. Scholz, Christoph; Doerfel, Stephan; Atzmueller, Martin; Hotho, Andreas; Stumme, Gerd (2011). 129-144.

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• Resource-Aware On-Line RFID Localization Using Proximity Data. Scholz, Christoph; Doerfel, Stephan; Atzmueller, Martin; Hotho, Andreas; Stumme, Gerd (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 (2011). 34(4) 238-240.

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2009

• Die Schwierigkeit des k-Median Clusterings für Bregman-Divergenzen. Technical Report (Master thesis), Scholz, Christoph PhD thesis, University of Paderborn. (2009).

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2008

• CSI: PC2 - A High Performance Biometrie System. Brulic, Samir; Brulic, Samira; Deppe, Pascal; Eschweiler, Dominic; Etemadi, Rosbeh; Herbold, Klaus; Konersmann, Christian; Meiche, Robert; Scholz, Christoph; Timm, Nils; Uckermann, Andre; Weber, Elmar; Zorn, Rene C. in LNI (2008). (Vol. S-6) 209-212.

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