Georg Groh 
 
Dipl.-Phys., Dipl.-Inform., Dr. rer. nat. habil., PD, Akad. Rat


   Room:         MI 01.05.059
   Phone:        +49--89--289--18678
   Fax:          +49--89--289--18657
   Mobile-Phone: +49--179--7953901
   E-Mail:       grohg(AT)in.tum.de
   Adress:       TUM - Institut für Informatik 
                 Lehrstuhl Prof. Dr. Schlichter 
                 Boltzmannstr. 3 
                 85747 Garching 
   Consultation Hour / Sprechstunden:
                 00:00-24:00 but ONLY after 3-way handshake via email!!!

Current Research Interests in Computer Science:

  • Mobile / Contextual Social Networking
  • Mobile Social Signal Processing / Detection of Social Situations
  • NLP methods for characterizing social relations
  • Social Recommender Systems
  • Applications of Social Context

Theses

  • Georg Groh: “Husimidichte und Phasenraumentropien für zweidimensionale Quantensysteme mit gemischt-regulär-chaotischer klassischer Dynamik” (Husimi-Density and Phase-Space Entropies for two-dimensional Quantum-Systems with Mixed Regular-Chaotic Classical Dynamics), Diploma-thesis in theoretical Physics, University of Kaiserslautern, Germany, 153 pages, Jan.1997
  • Georg Groh: “Applying Text Classification Methods to the Mapping of Simple Extensional Ontologies for Community Information Management”, Diploma thesis in Computer Science / Informatics, University of Kaiserslautern / Technische Universität München (TUM), Germany, 115 pages, Feb. 2001
  • Georg Groh “Ad-Hoc-Groups in Mobile Communities – Detection, Modeling and Applications”, PhD-thesis in Computer Science / Informatics, Technische Universität München (TUM), Germany, 254 pages, Feb. 2005
  • Georg Groh “Contextual Social Networking”, Habilitation thesis in Computer Science / Informatics, Technische Universität München (TUM), Germany, 625 pages, Sept. 2012. 229 page electronic version without the included papers: http://mediatum.ub.tum.de/doc/1128623/1128623.pdf. 625 page pdf version with included papers: http://www11.in.tum.de/georgFiles/files/habil.pdf (login: vp password: snatbtitw!)

Refereed Conference Papers

  • Martin S. Lacher, Georg Groh: “Facilitating the exchange of explicit knowledge through ontology mappings”, Proc. 14th International FLAIRS conference, AAAI Press, S.305-309, Key West, USA, Mai 2001
  • Christian Hillebrand, Georg Groh, Michael Koch: “Mobile Communities - Extending Online Communities into the Real World (Long Version)”, Proc. Multikonferenz Wirtschaftsinformatik 2002 (MKWI2002) - Mobile and Collaborative Business, Nürnberg, Germany, 2002
  • Michael Koch, Georg Groh, Christian Hillebrand: “Mobile Communities - Extending Online Communities into the Real World (Short Version)”, Proc. Americas Conf. on Information Systems (AMCIS2002), Dallas, USA, Aug. 2002.
  • Oliver Brakel, Georg Groh, Christian Hillebrand, Andreas Tasch: “Privacy-Einstellungen bei Lokalisierungsdiensten” (Privacy Settings in Location-Based Services) Proc. MKWI04, Essen, Germany, March 2004
  • Wolfgang Woerndl, Georg Groh, Karlheinz Toni: “Semantic Blogging Agents: Weblogs and Personalization in the Semantic Web”, Proc. AAAI Spring Symposium on Computational Approaches to Analyzing Weblogs, Stanford, USA, March 2006
  • Georg Groh: “Groups and Group Instantiations – Detection Modeling and Applications” Proc. AAAI International Conference on Weblogs and Social Media (ICWSM07), Boulder, Co, USA, March 2007
  • Ruth Cobos, Clarissa Falge, Georg Groh: “Sistema multiagente para el mantenimiento de las áreas de conocimiento que ofrece el sistema de gestión de conocimiento” (A Multi-Agent System for the Maintenance of Areas of Expertise in a Knowledge Management System), Proc. DESMA07, Saragossa, Spain, September 2007
  • Georg Groh, Christian Ehmig: “Recommendations in Taste Related Domains: Collaborative Filtering vs. Social Filtering”, Proc. ACM Group07, Sunibel Island, USA, Nov 2007
  • Andreas Nauerz, Georg Groh: “Implicit Social Network Construction and Expert User Determination in Web Portals”, Proc. AAAI Spring Symposium on Social Information Processing, Stanford University, USA, 2008
  • Sam Zeini, Nils Malzahn, H. Ulrich Hoppe, Joachim Hafkesbrink, Ulrich Mill, Georg Groh, Thomas Schauf, Roland Westermaier, Oliver Pfeiffer, Hartmut Scholl: “Ansätze zur softwareunterstützten Kompetenzentwicklung in innovationsgetriebenen Berufen der Digitalen Wirtschaft. Virtuelle Organisationen und Neue Medien 2008” (Approaches for Software-Supported Development of Competencies in Innovation-Driven Professions in Digital Economy), Proc. GeNeMe 2008, pp. 229-240, Dresden, Germany, 2008
  • Wolfgang Woerndl, Georg Groh: “A Social Item Filtering Approach for a Mobile Semantic Desktop Application”, Proc. AAAI 2009 Spring Symposium on Social Semantic Web (SSW), Stanford, CA, March 2009
  • Henrik Mühe, Wolfgang Wörndl, Georg Groh: “Realisierung eines dezentralen Recommender Systems für PDAs” (A Decentralized Recommender System for PDAs), Proc. 4. Konferenz Mobilität und mobile Informationssysteme (MMS 2009), Münster, Germany, March 2009
  • Rene Friess, Martin Kleinhans, Florian Forster, Florian Echtler, Georg Groh: “A Multi-Touch Tabletop-Interface for Applying Collaborative Creativity Techniques“, Video, ACM Intl. Conf. on Interactive Tabletops and Surfaces 2009 (Tabletop09), Banff, Canada, Nov 2009
  • Michele Brocco, Georg Groh: “A Meta Model for Team Recommendations in Open Innovation Networks”, Short Paper, Proc. Third ACM Conference on Recommender Systems (RecSys 09), Oct 2009, NY, USA
  • Rene Friess, Florian Forster, Michele Brocco, Georg Groh: ”On the Impact of Chat Communication on Computer-Supported Idea Generation Processes“, First Intl. Conf. on Computational Creativity 2010 (ICCC10), Lissabon, Portugal, Jan. 2010
  • Michael Reinhardt, Rene Friess, Georg Groh, Michael Amberg: “Web 2.0 driven Open Innovation Networks - A Social Network Approach to support the Innovation Context within Companies”, Proc. MKWI 2010, Göttingen, Germany, Feb. 2010
  • Georg Groh, Alexander Lehmann, Tianyu Wang, Stefan Huber, Felix Hammerl: “Applications For Social Situation Models”, Proc. Wireless Applications 2010, (WAC2010), Freiburg, Germany, July 2010
  • Rene Friess, Georg Groh, Michael Reinhardt: “Supporting Open Innovation Communities by an Interactive Network Visualization”, Proc. Web-Based Communities 2010 (WBS2010), Freiburg, Germany, July 2010
  • Rene Friess, Martin Kleinhans, Florian Forster, Florian Echtler, Georg Groh: “A Tabletop Interface For Generic Creativity Techniques”, Proc. Interfaces and Human Computer Interaction 2010 (IHCI2010) Freiburg, Germany, July 2010
  • Michele Brocco, Georg Groh, Florian Forster: “A Meta Model for Team Recommendations”, Proc. SocInfo2010, Laxenburg, Austria, October 2010
  • Georg Groh, Alexander Lehmann, Jonas Reimers, Rene Friess, Loren Schwarz: “Detecting Social Situations from Interaction Geometry”, Proc. IEEE SocialCom 2010, Minneapolis USA, August 2010
  • M. R. Frieß, N. Klügel, and G. Groh: “lzrdm - collaborative multi-touch sequencer”; Proc. of the ACM International Conference on Interactive Tabletops and Surfaces 2010 (Demo-Video), Saarbrücken, Germany, Nov. 2010
  • Georg Groh and Jan Hauffa: “Characterizing Social Relations via NLP-based Sentiment Analysis”, Proc. AAAI ICWSM 2011, Barcelona, Spain
  • Georg Groh, Alexander Lehmann and Manuel de Souza: “Mobile Detection of Social Situations with Turn Taking Patterns”, Proc. WAC2011, Rome, Italy
  • Niklas Klügel, René Frieß, Georg Groh, Florian Echtler: “An Approach to Collaborative Music Composition”, Proc. NIME2011, Oslo, Norway
  • Niklas Klügel and Georg Groh: “Towards Mapping Timbre to Emotional Affect”, Proc. 13th International Conference on New Interfaces for Musical Expression (NIME) 2013
  • Niklas Klügel and Gerhard Hagerer and Georg Groh "FugueGenerator - Collaborative Melody Composition Based on a Generative Approach for Conveying Emotion in Music", ICMC/SMC 2014
  • Niklas Klügel and Andreas Lindstrom and Georg Groh "A Genetic Algorithm Approach to Collaborative Music Creation on a Multi-Touch Table", ICMC/SMC 2014

Refereed Workshop Papers, Short Papers and Poster Papers

  • Martin S. Lacher, Georg Groh: “Enabling personal perspectives on heterogeneous information spaces”, Proc. IEEE 10th Intl. Workshop on Enabling Technologies: Infrastructure for Collaborative Enterprises (WETICE 2001), MIT, Cambridge, USA, 20-22. Jun. 2001.
  • Georg Groh: “Modelling Ad-Hoc-Groups in Communities” , Proc. International Workshop “Virtual Communities & Mobility”, 27-28. TU-München, June 2003
  • Wolfgang Woerndl, Georg Groh: “A proposal for an agent-based architecture for context-aware personalization in the Semantic Web”, Proc. IJCAI-05 Workshop Multi-Agent Information Retrieval and Recommender Systems, Edinburgh, UK, 2005.
  • Clarissa Falge, Ruth Cobos, Georg Groh: “Classification and Ontology Maintenance in Agent-based Knowledge Management Frameworks: A Prototypical Approach” Proc. Intl. Workshop on Social Media Analysis, IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT 07), November 2007
  • Wolfgang Wörndl, Georg Groh: “Utilizing Physical and Social Context to Improve Recommender Systems”, Workshop on Web Personalization and Recommender Systems (WPRS07) In conjunction with the 2007 IEEE/WIC/ACM Intl. Conf. on Web Intelligence (WI07) and Agent Technology (IAT07), November 2007
  • Holger Hanstein, Georg Groh: “Interactive Visualization of Dynamic Social Networks”, Proc. GI Jahrestagung (2) 2008: 929-936
  • Georg Groh, Holger Hanstein, Wolfgang Woerndl: “Interactively Visualizing Dynamic Social Networks with DySoN”, Proc. Workshop Visual Interfaces to the Social and the Semantic Web (VISSW 2009), ACM IUI Conf., Sanibel Island, FL, Feb. 2009
  • Georg Groh, Verena Rappel: “Towards Demarcation and Modeling of Small Sub-Communities / Groups in P2P Social Networks”, IEEE SIN09@SocialCom09, Vancouver, Canada, August 2009
  • Walter Kammergruber, Michele Brocco, Georg Groh, Manfred Langen: “Collaborative Thesaurus Development based on Social Tagging Data”, Proc. Intl. Symposium on Support for Open Innovation Processes 2009, Mülheim/Ruhr, Germany, Dec. 2009
  • Michele Brocco, Georg Groh: “Contribution Awareness and Fame in Open Innovation Networks”, Proc. Intl. Symposium on Support for Open Innovation Processes 2009, Mülheim/Ruhr, Germany, Dec. 2009
  • Markus Schmucker, Anna Stark, Michele Brocco, Georg Groh, Sam Zeini: “MeCMS - A Case Study on Open (Source) Innovation”, Proc. Intl. Symposium on Support for Open Innovation Processes 2009, Mülheim/Ruhr, Germany, Dec. 2009
  • Michael Reinhardt, Marc René Friess, Georg Groh, Michael Amberg, Jochen Hetzenecker: “Fostering Process and Context Support through Social Networking Services on an Open Innovation Platform”, Proc. Intl. Symposium on Support for Open Innovation Processes 2009, Mülheim/Ruhr, Germany, Dec. 2009
  • Michele Brocco, Georg Groh, Christian Kern: “On the Influence of Social Factors on Team Recommendations”, Second International Workshop on Modeling, Managing and Mining of Evolving Social Networks (M3SN), Co-located with IEEE ICDE 2010, Long Beach, USA, March 2010
  • Benedikt Elser, Georg Groh, and Thomas Fuhrmann: “Group Management in P2P Networks”, Proceedings of the 2nd IEEE Workshop on Grid and P2P Systems and Applications (GridPeer 2010), Zurich, Switzerland, August 2010
  • Jan Hauffa, Gottlieb Bossert, Nadja Richter, Florian Wolf, Nora Liesenfeld and Georg Groh: “Beyond FOAF: Challenges in Characterizing Social Relations”, Proc. IEEE Socialcom2011, Boston, USA
  • Georg Groh, Stefan Birnkammerer: “Privacy and Information Markets: Controlling Information Flows in Decentralized Social Networking”, Proc. IEEE Socialcom2011, Boston, USA
  • Georg Groh, Christoph Fuchs, Alexander Lehmann: “Combining Evidence for Social Situation Detection”, Proc. IEEE Socialcom2011, Boston, USA
  • Piotr Kozikowski and Georg Groh: “Inferring Profile Elements from Publicly Available Social Network Data”, Proc. IEEE Socialcom2011, Boston, USA
  • Tim Falkenmayer, Wolfgang Woerndl, Georg Groh “A Mobile Client for Episodic Personal Information Management” HotMobile Workshop 2011
  • Halgurt Bapierre, Georg Groh, Stefan Theiner: “A Variable Order Markov Model Approach for Mobility Prediction” Proc. STAMI2011@IJCAI2011, Barcelona, Spain
  • Georg Groh, Florian Straub, Benjamin Koster: “Spatio-Temporal Small Worlds for Decentralized Information Retrieval in Social Networking ”, Proc. ACM SIGSPATIAL2012
  • Jan Hauffa, Tobias Lichtenberg, Georg Groh: “Towards an NLP-based Topic Characterization of Social Relations ”, Proc. ASE Intl.’ Conf. on Social Informatics, Washington DC, USA, 2012
  • Georg Groh, Florian Straub, Johanna Eicher, David Grob: “Geographic Aspects of Tie Strength and Value Of Information in Social Networking”, ACM SIGSPATIAL LBSN 2013, Orlando FL.
  • Florian Schulze and Georg Groh: “Studying How Character of Conversation Affects Personal Receptivity to Mobile Notifications”, CHI 2014 Work in Progress Report.
  • Nicholas H. Kirk and Guchun Zhang and Georg Groh “Estimating Grammar Correctness for a Priori Estimation of Machine Translation Post-Editing Effort”, Workshop on Humans and Computer-assisted Translation, 14th Conference of the European Chapter of the Association for Computational Linguistics, Sweden 2014
  • Beatrice Lamche and Enrico Pollok and Wolfgang Woerndl and Georg Groh: “Evaluating the Effectiveness of Stereotype User Models for Recommendations on Mobile Devices‘”, PESE 2014
  • Niklas Klügel and Gerhard Hagerer and Georg Groh “Designing Sound Collaboratively - Perceptually Motivated Audio Synthesis”, NIME 2014
  • Niklas Klügel and Timo Becker and Georg Groh “TreeQuencer: Collaborative Rhythm Sequencing - A Comparative Study”, NIME 2014

Refereed Talks

  • Georg Groh “Privacy Matters for Location Based Community Services” Proc. German Online Research 2004 (GOR04), Duisburg, Germany, March 2004
  • Georg Groh, Karlheinz Toni, Wolfgang Wörndl: “Foundations of the Semantic Web”, Reviewed 4 hour tutorial at the IADIS International Conference WWW/Internet 2005, Lisbon, Portugal, 19-22. October 2005
  • Georg Groh, Florian Straub: “Kollaboratives raum-zeitliches P2P-Information Retrieval als Grundlage für innovative LBS-Anwendungen im alpinen Raum?”, Proc. AHORN 09, ETH-Zürich, Zürich, Switzerland, Nov 2009

Refereed Journal-Papers

  • G.Groh, H.J.Korsch, W.Schweizer: “Phase space entropies and global quantum phase space organization: a two dimensional anharmonic system”, J. Phys. A 31(1998)6897-6910
  • Wolfgang Woerndl, Georg Groh, Aleksandar Hristov: “Individual and Social Recommendations for Mobile Semantic Personal Information Management, International Journal on Advances in Information Technology, Vol. 2 Nr. 2, 2009
  • Georg Groh, Florian Straub: “An Architecture for an Alternative, Multi-Agent-Based Information Retrieval Approach with Spatio-Temporal Primary Classification Criterion”, GIS.Science Journal, 02/2010
  • Georg Groh, Adolf Winteler: “Die Wirksamkeit von Einlese-Zeit auf die Ergebnisse in Hochschulprüfungen”, Zeitschrift Das Hochschulwesen, 03/2010, Universiätsverlag Webler, Bielefeld, Germany, March 2010
  • Georg Groh and Christoph Fuchs: “Multi-modal Social Networks for Modeling Scientific Fields”, Scientometrics 80(3), 2011
  • Marc René Frieß and Georg Groh and Michael Reinhardt and Florian Forster and Johann Schlichter: “Context-Aware Creativity Support for Corporate Open Innovation”, International Journal of Knowledge-Based Organizations, 2(1), 38-55, January-March 2012
  • Michael Reinhardt, Martin Wiener, Marc René Frieß, Georg Groh, Michael Amberg: “Social Software Support for Collaborative Innovation Development within Organizations”, International Journal of Knowledge-Based Organizations, 2(1), 56-76, January-March 2012
  • Georg Groh and Alexander Lehmann: Deducing evidence for social situations from dynamic geometric interaction data, Int. J. Social Computing and Cyber-Physical Systems, Volume 1, Number 2, 2011, pp. 206 - 222, (Invited journal contribution based on Georg Groh, Alexander Lehmann, Jonas Reimers, Rene Friess, Loren Schwarz: “Detecting Social Situations from Interaction Geometry”, Proc. IEEE SocialCom 2010, Minneapolis USA, August 2010 )
  • Marc René Frieß, Georg Groh, Niklas Klügel and Martin Kleinhans: A Tabletop Application Environment for Generic Creativity Techniques, International Journal of Computer Information Systems and Industrial Management Applications. http://mirlabs.ujn.edu.cn/ijcisim (checked October 2012). Volume 4, 2012, pp. 55-65. (Invited journal contribution based on Rene Friess, Martin Kleinhans, Florian Forster, Florian Echtler, Georg Groh: “A Tabletop Interface For Generic Creativity Techniques”, Proc. Interfaces and Human Computer Interaction 2010 (IHCI2010) Freiburg, Germany, July 2010)
  • Marc René Frieß, Georg Groh, Niklas Klügel, and Martin Kleinhans: “An Analysis Framework for Quantitatively Characterizing Collaboration in Tabletop Based CSCW Environments”, International Journal of Computer Information Systems and Industrial Management Applications. Volume 4, 2012, pp. 341-351.

Contributions in Books

  • G.Groh, J.Schlichter: “Technische und konzeptuelle Modelle für (mobile) Communities” in Reichwald et. al. (Eds.): ”Community Services: Lifestyle“, Eul Verlag, Germany, 2005
  • Georg Groh, Michele Brocco, Yonata Andrelo Asikin: “Contribution Awareness and Fame in Open Innovation Networks” in Hoppe et al (Eds.): IT Support for Open Innovation, Eul-Verlag, Germany, 2010
  • Michele Brocco, Georg Groh, Markus Schmucker, Anna Stark, Sam Zeini: “MeCMS - A Case study on Open (Source) Innovation” in Hoppe et al (Eds.): IT Support for Open Innovation, Eul-Verlag, Germany, 2010
  • Walter Christian Kammergruber, Michele Brocco, Georg Groh, Manfred Langen: “Collaborative Lightweight Ontologies in Open Innovation-Networks” in Hoppe et al (Eds.): IT Support for Open Innovation, Eul-Verlag, Germany, 2010
  • Michael Reinhardt, Marc Rene’ Frieß, Georg Groh, Michael Amberg: “Fostering Process and Context Support through Social Networking Services on an Open Innovation Platform” in Hoppe et al (Eds.): IT Support for Open Innovation, Eul-Verlag, Germany, 2010
  • Georg Groh and Stefan Birnkammerer and Valeria Köllhofer: “Social Recommender Systems” in Jose J. Pazos Arias et al (Eds.): “Recommender Systems for the Social Web” Springer, Intelligent Systems Reference Library, Volume 32, 2011

Talks on Invitation

  • Georg Groh: “Ortsbezug in kontext-sensitiven Diensten für mobile Communities” (Spatial References in´Context-Aware Services for Mobile Communities), 8. Münchner Fortbildungsseminar Geo-Informationssysteme, TU München, Munich, Germany, March 2003
  • Georg Groh, Christian Hillebrand “Mobile Dienste für Communities – das Forschungsprojekt COSMOS‘”, Presentation at the Cebit 2003, Hannover, Germany, 2003
  • Georg Groh “Grundlagen des Semantic Web” (Foundations of the Semantic Web), Introductory talk at the 13th meeting of the Munich Knowledge Management Circle (MKMK), Munich, Germany, Feb. 2005
  • Georg Groh “Ad-Hoc-Groups in Mobile Communities”, Talk at the Cebit Asia, Shanghai, China, May 12, 2005
  • Georg Groh “Location Based Services: Lokalisierungsverfahren und Bedeutung für die mobilen Dienste im Projekt COSMOS”, Referee- and Background-Presentation at the Businessplan-Contest, TU München, Germany, Nov 2005
  • Georg Groh “Using context models and models for contextually instantiated social relations for mobile social computing services”, Invited Talk, Web Mining 2.0 Workshop co-located with the 18th European Conference on Machine Learning / 11th European Conference on Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD), Warshaw, Poland, Sept. 2007
  • Georg Groh: “Geometry of Interaction: Detecting Social Context on Small Spatio-temporal Scales”, Talk at Institut für Geodäsie und Photogrammetrie, ETH Zurich, GEOMATIK Kolloqium, April 2011
  • Georg Groh: “Social Dynamics on Small Spatial and Temporal Scales: Detecting Social Situations with Pragmatic Mobile Social Signal Processing”, Talk at the Dagstuhl Seminar 11451 ’Data Mining, Networks and Dynamics’, November, 2011
  • Georg Groh: “ Social Situations and Co-Activity Detection” Talk at the Dagstuhl Seminar 12492 ’Human Activity Recognition in Smart Environments’, December, 2012
  • Georg Groh: “Social Computing and Social Media: Science and Society” November 2012 Talk at Munich Data Geeks Meeting, October 2013 Highlight Vorlesung Informatik (auf Einladung der Fachschaft Mathematik/Informatik/Physik)

Technical Reports and Other Papers

  • Michael Koch, Georg Groh, Christian Hillebrand, Natalie Fremuth: “Mobile Support for Lifestyle Communities”, Arbeitsbericht Nr. 34, Lehrstuhl für allgemeine und angewandte Betriebswirtschaftslehre, hrsg. v. R. Reichwald, ISSN: 0942-5098, TU-München, Germany, Nov. 2002.
  • Georg Groh, Michael Koch: “Server-Technologien und Personalisierung für mobile Communities” in ’Community Online Services and Mobile Solutions - Projektstartbericht des Verbundvorhabens COSMOS’, Tech.-Report TUM-I0105, Institut für Informatik, TU-München, Germany, Oct. 2001
  • Georg Groh, Christian Hillebrand “LBCS – Location Based Community Services: Proactive LBS Services for Mobile Communities in the Research Project COSMOS”, Tech.-Report TUM-I0408, Insititut für Informatik, TU-München, May 2004
  • Lars Nagel, Georg Groh, Michael Berger, Michael Pirker: “Sensor Data Processing for Ubiqitous Computing Scenarios”, Tech.-Report TUM-I0617, Institut für Informatik, TU-München, Germany, Oct. 2006
  • Georg Groh: “3D-Beans - A Component-System for 3D-Graphics with Java3D and JavaBeans”, Project Report, 38 Pages, Institut für Informatik, University of Kaiserslautern, Germany, Jun. 1999
  • Georg Groh: “Ubiquitous, Wearable and Affective Computing - New Ways in Context-Sensitive Human Computer Interaction?”, Seminar-Report, 46 pages, Institut für Informatik, University of Kaiserslautern, Germany, Jun. 1999
  • Stefan Birnkammerer, Wolfgang Woerndl, Georg Groh: “Recommending for Groups in Decentralized Collaborative Filtering”, Tech-Report TUMI0927, Nov. 2009
  • Bry et al. (Eds.): “Digital Social Media Dagstuhl Manifesto”. Manifesto of the Dagstuhl Perspectives Workshop Digital Social Networks, March 2010
  • Georg Groh, Alexander Lehmann: “A New Data-Set for Research on Audio-Detection and Modeling of Social Micro-Contexts”, Tech.-Report TUM-I1011, Institut für Informatik, TU-München, Germany, May 2010
  • Georg Groh, Philip Daubmeier: “State of the Art in Mobile Social Networking on the Web”, Tech.-Report TUM-I1014, Institut für Informatik, TU-München, Germany August 2010
  • Michele Brocco, Georg Groh: “Team Recommender für Open Innovation Netzwerke”, BVDW (Bundesverband der digitalen Wirtschaft) Report “Open Innovation Kompass”, Düsseldorf, Germany 2010,
  • Markus Schmucker, Michele Brocco, Sam Zeini, Georg Groh, Christian Reinking: “Produktentwicklung mit Open Innovation”, BVDW (Bundesverband der digitalen Wirtschaft) Report “Open Innovation Kompass”, Düsseldorf, Germany 2010
  • Georg Groh, Florian Straub, Andreas Donaubauer, Benjamin Koster: “Space and Time as a Primary Classification Criterion for Information Retrieval in Distributed Social Networking”, Online via http://arxiv.org/abs/1104.2196 (checked October 2012), 2011
  • Georg Groh, Michele Brocco and Andreas Kleemann: “Interest-Based vs. Social Person-Recommenders in Social Networking Platforms”, Arxiv.org Preprint: http://arxiv.org/abs/1107.5654 (checked October 2012), 2011
  •  Georg Groh, Florian Straub, Benjamin Koster: “Spatio-Temporal Small Worlds for Decentralized Information Retrieval in Social Networking ”, long version of Georg Groh, Florian Straub, Benjamin Koster: “Spatio-Temporal Small Worlds for Decentralized Information Retrieval in Social Networking ”, Proc. ACM SIGSPATIAL2012}, Online via http://arxiv.org/abs/1209.2868 (checked October 2012), 2012
  • Jan Hauffa, Tobias Lichtenberg, Georg Groh: “An evaluation of keyword extraction from online communication for the characterisation of social relations” Online via http://arxiv.org/abs/1402.2427 (checked January 2014)