University of Konstanz
Algorithmics Group
Prof. Dr. Ulrik Brandes

Jürgen Lerner

Contact

address University of Konstanz
Department of Computer & Information Science
Box 67
78457 Konstanz, Germany
officePZ 1008
phone+49 7531 88-4039
fax+49 7531 88-3577
emailjuergen.lerner@uni-konstanz.de and juergen.lerner@gmail.com
office hourby appointment
webhttp://algo.uni-konstanz.de/members/lerner/
JL
 

Personal

PostDoc with Prof. Dr. Ulrik Brandes, Algorithmics group, University of Konstanz.
PostDoc with Prof. Dr. Alessandro Lomi, Faculty of Economic Science, Università della Svizzera italiana, Lugano.

Research Interests


Teaching

WS 2016/2017 Seminar Analyzing Wikipedia collaboration networks
WS 2015/2016 Lecture Network Modeling
WS 2015/2016 Seminar Re-analyzing social network studies: What is the enemy of my enemy?
WS 2014/2015 Lecture Network Modeling
WS 2013/2014 Lecture Network Modeling
SS 2013 Bachelor/Master Project Personal Networks on Mobile Devices
SS 2013 Seminar Modeling Network Data
WS 2012/2013 Lecture Network Modeling
WS 2011/2012 Lecture Network Modeling
WS 2010/2011 Übungen zur Vorlesung Algorithmen und Datenstrukturen
SS 2010 Vorlesung Methoden der Netzwerkanalyse
WS 2009/2010 Projekt & Seminar Netzwerkmodelle
WS 2007/2008 Übungen zur Vorlesung Algorithmen und Datenstrukturen
SS 2006 Übungen zur Vorlesung Theoretische Grundlagen der Informatik
WS 2005/2006 Übungen zur Vorlesung Entwurf und Analyse von Algorithmen
WS 2004/2005 Projektpraktikum Graphen und Algorithmen
SS 2004 Übungen zur Vorlesung Theoretische Grundlagen der Informatik
SS 2003 Übungen zur Vorlesung Diskrete Strukturen (an der Universität Passau)

Publications

Note: Until 2011 it was our group's policy to list authors in alphabetical order whenever context allows.
to appear  
Jürgen Lerner and Alessandro Lomi: Dominance, Deference, and Hierarchy Formation in Wikipedia Edit-Networks. In: Proc. 5th Intl. Workshop Complex Networks and their Applications (2016), to appear. © Springer-Verlag. (Access to the accepted manuscript for non-commercial and educational purposes.)
editorial
Jürgen Lerner, Dorothea Wagner, and Katharina A. Zweig (Eds.): Algorithmics of Large and Complex Networks. LNCS, vol. 5515. © Springer-Verlag, 2009.
journal articles
Jürgen Lerner: Structural Balance in Signed Networks: Separating the Probability to Interact from the Tendency to Fight. Social Networks, 45:66-77, 2016. (Access to the accepted manuscript.)
Hugo Valenzuela-García, Jose Luis Molina, Miranda J. Lubbers, Alejandro García-Macías, Judith Pampalona, and Jürgen Lerner: On Heterogeneous and Homogeneous Networks in a Multilayered Reality. Societies, 4:85-104, 2014.
Jürgen Lerner, Natalie Indlekofer, Bobo Nick and Ulrik Brandes: Conditional Independence in Dynamic Networks. Journal of Mathematical Psychology, 57(6):275-283, 2013.
Jürgen Lerner, Margit Bussmann, Tom A.B. Snijders, and Ulrik Brandes: Modeling frequency and type of interaction in event networks. Corvinus Journal of Sociology and Social Policy, 4(1):3-32, 2013.
Jürgen Lerner, Patrick Kenis, Denise van Raaij, and Ulrik Brandes: Will they stay or will they go? How network properties of WebICs predict dropout rates of valuable Wikipedians. European Management Journal, 29(5):404-413, 2011.   (A tutorial on how to reproduce the analysis in this paper can be found in the visone wiki's tutorial on Wikipedia edit networks.)
Ulrik Brandes, Jürgen Lerner and Uwe Nagel: Network Ensemble Clustering with Latent Roles. Advances in Data Analysis and Classification, 5(2):81-94, 2011.
Ulrik Brandes and Jürgen Lerner: Structural Similarity: Spectral Methods for Relaxed Blockmodeling. Journal of Classification 27(3):279-306, 2010.
Miranda J. Lubbers, Jose Luis Molina, Jürgen Lerner, Ulrik Brandes, Javier Avila, and Christopher McCarty: Longitudinal Analysis of Personal Networks. The Case of Argentinean Migrants in Spain. Social Networks 32(1):91-104, 2010.
Jose Luis Molina, Jürgen Lerner, and Silvia Gomez Mestres: Patrones de Cambio de las Redes Personales de Inmigrantes en Cataluna. REDES, 15:50-63, 2008.
Ulrik Brandes and Jürgen Lerner: Visual Analysis of Controversy in User-generated Encyclopedias. Information Visualization, 7:34-48. © Palgrave Macmillan Ltd., 2008.
Ulrik Brandes, Daniel Fleischer, and Jürgen Lerner: Summarizing Dynamic Bipolar Conflict Structures. IEEE Transactions on Visualization and Computer Graphics, special issue on Visual Analytics, 12(6):1486-1499. © IEEE Computer Society, 2006.   (Example data and animations are available >here<.)
articles in peer-reviewed conference proceedings  
Ulrik Brandes, Jürgen Lerner, Bobo Nick and Steffen Rendle: Network Effects on Interest Rates in Online Social Lending. In Proc. INFORMATIK 2011 - 4. Workshop Digitale soziale Netwerke, GI Edition - Lecture Notes in Informatics (LNI), vol. 192, 2011.
Jérôme Kunegis, Stephan Schmidt, Andreas Lommatzsch, Jürgen Lerner, Ernesto W. De Luca, and Sahin Albayrak: Spectral Analysis of Signed Graphs for Clustering, Prediction and Visualization. Proc. SIAM Intl. Conf. on Data Mining, 2010.
Ulrik Brandes, Jürgen Lerner, Miranda J. Lubbers, Christopher McCarty, José Luis Molina and Uwe Nagel: Recognizing modes of acculturation in personal networks of migrants. Proc. 6th Conf. Applications of Social Network Analysis (ASNA 2009), Procedia - Social Behavioral and Sciences, vol. 4, pp. 4-13. Elsevier, 2010.
Ulrik Brandes, Jürgen Lerner, and Tom A. B. Snijders: Networks Evolving Step by Step: Statistical Analysis of Dyadic Event Data. Proc. 2009 Intl. Conf. Advances in Social Network Analysis and Mining (ASONAM 2009), pp.200-205. © IEEE Computer Society, 2009.
Ulrik Brandes, Jürgen Lerner, Uwe Nagel, and Bobo Nick: Structural Trends in Network Ensembles. Proc. Intl. Workshop Complex Networks (CompleNet 2009), pp.83-97. © Springer-Verlag, 2009.
Ulrik Brandes, Patrick Kenis, Jürgen Lerner, and Denise van Raaij: Network Analysis of Collaboration Structure in Wikipedia. Proc. 18th Intl. World Wide Web Conference (WWW 2009).   (A tutorial on how to reproduce the analysis in this paper can be found in the visone wiki's tutorial on Wikipedia edit networks.)
Ulrik Brandes, Patrick Kenis, Jürgen Lerner, and Denise van Raaij: Is Editing More Rewarding Than Discussion? A Statistical Framework to Estimate Causes of Dropout from Wikipedia. Proc. 1st Intl. Workshop Motivation and Incentives on the Web (Webcentives'09) at the 18th Intl. World Wide Web Conference (WWW 2009).
Ulrik Brandes, Jürgen Lerner, Miranda J. Lubbers, Chris McCarty and José Luis Molina: Visual Statistics for Collections of Clustered Graphs. Proc. IEEE Pacific Visualization Symp. (PacificVis'08), pp. 47-54. © IEEE Computer Society, 2008.    (A guide on how to apply the techniques proposed in the paper can be found in the visone wiki's personal networks tutorial.)
Ulrik Brandes and Jürgen Lerner: Visual Analysis of Controversy in User-generated Encyclopedias. Proc. IEEE Symp. Visual Analytics Science and Technology (VAST'07), pp. 179-186. © IEEE Computer Society, 2007.
Ulrik Brandes and Jürgen Lerner: Revision and Co-revision in Wikipedia. Proc. Intl. Workshop Bridging the Gap Between Semantic Web and Web 2.0, 4th Europ. Semantic Web Conf. (ESWC'07), 2007.
Ulrik Brandes and Jürgen Lerner: Role-equivalent Actors in Networks. Proc. ICFCA'07 Satellite Workshop Social Network Analysis and Conceptual Structures, 2007.
Ulrik Brandes and Jürgen Lerner: Coloring Random 3-Colorable Graphs with Non-Uniform Edge Probabilities. Proc. 31st Intl. Symp. Mathematical Foundations of Computer Science (MFCS '06), pp. 202-213. © Springer-Verlag, 2006.
Ulrik Brandes, Martin Hoefer, and Jürgen Lerner: WordSpace - Visual Summary of Text Corpora. Proc. IST/SPIE's 18th Ann. Intl. Symp. Electronic Imaging (VDA '06), SPIE Vol. 6060 60600N, 2006.
Ulrik Brandes, Daniel Fleischer, and Jürgen Lerner: Highlighting Conflict Dynamics in Event Data. Proc. IEEE Symp. Information Visualization (InfoVis '05), pp. 103-110. © IEEE Computer Society, 2005.    (Example data and animations are available >here<.)
Ulrik Brandes, Jürgen Lerner, and Christian Pich: GXL to GraphML and Vice Versa with XSLT. Proc. 2nd Intl. Workshop Graph-Based Tools (GraBaTs '04). Elsevier ENTCS 127(1):113-125, 2005.
Ulrik Brandes and Jürgen Lerner: Structural Similarity in Graphs. Proc. 15th Intl. Symp. Algorithms and Computation (ISAAC '04) . Springer LNCS, pp. 184-195. © Springer-Verlag, 2004.
Michael Baur, Marc Benkert, Ulrik Brandes, Sabine Cornelsen, Marco Gaertler, Boris Köpf, Jürgen Lerner, and Dorothea Wagner: visone - Software for Visual Social Network Analysis. Proc. 9th Intl. Symp. Graph Drawing (GD '01), LNCS 2265, pp. 463-464. © Springer-Verlag, 2002.
book chapters
Patrick Kenis and Jürgen Lerner: Wikipedia Collaborative Networks. In: Encyclopedia of Social Network Analysis and Mining. Springer New York, 2014. 2406-2410.
Jose Luis Molina, Jürgen Lerner, Miranda J. Lubbers, and Aurelio Díaz: Transnacionalismo, negocios étnicos y crisis económica en Cataluña. In: Magdalena Barros and Hugo Valenzuela (eds.) Retos y estrategias del empresariado étnico contemporáneo. CIESAS, 49-67, 2013.
Ulrik Brandes, Markus Eiglsperger, Jürgen Lerner, and Christian Pich: GraphML. In: Roberto Tamassia (ed.) Handbook of Graph Drawing and Visualization, pp. 517-541. © CRC Press, 2013.
Jürgen Lerner, Ulrik Brandes, Patrick Kenis, and Denise van Raaij: Modeling Open, Web-based Collaboration Networks: The Case of Wikipedia. In Markus Gamper, Linda Reschke, Michael Schönhuth (Eds.): Knoten und Kanten 2.0, pp 141-162. transcript-Verlag, 2012.   (A tutorial on how to reproduce the analysis in this paper can be found in the visone wiki's tutorial on Wikipedia edit networks.)
Jürgen Lerner: Beziehungsmatrix. In Christian Stegbauer and Roger Häußling (Hrsg.): Handbuch Netzwerkforschung pp 355-364. © VS Verlag, 2010.
Michael Baur, Ulrik Brandes, Jürgen Lerner, and Dorothea Wagner: Group-Level Analysis and Visualization of Social Networks. In Jürgen Lerner, Dorothea Wagner, and Katharina A. Zweig (Eds.): Algorithmics of Large and Complex Networks. LNCS, vol. 5515, pp 330-358. © Springer-Verlag, 2009.
Ulrik Brandes and Jürgen Lerner: Visualization of Conflict Networks, (access to PDF). In Mayeul Kauffmann (Ed.): Building and Using Datasets on Armed Conflicts, NATO Science for Peace and Security Series E: Human and Societal Dynamics - Vol. 36, pp. 169-188. © IOS Press, 2008.
Jürgen Lerner: Role Assignments. In Ulrik Brandes and Thomas Erlebach (Eds.): Network Analysis: Methodological Foundations. LNCS Tutorial, vol. 3418, pp 216-252. © Springer-Verlag, 2005.
theses
Dissertation: Structural Similarity of Vertices in Networks.
Diploma in Mathematics: Primtests und der Satz von Ankeny.
other (unpublished - but useful)
The visone development team: visone wiki -- tutorials for the visone software.
Ulrik Brandes, Markus Eiglsperger, and Jürgen Lerner: GraphML Primer -- an easy introduction to GraphML. (HTML document)