***** Apologies for multiple copies *****

 - Group formation, evolution and group behavior analysis.
 - Modeling, tracking and forecasting dynamic groups in social media.
 - Community detection and dynamic community structure analysis.
 - Social simulation, cultural, opinion, and normative dynamics.
 - Empirical calibration and validation of agent-based social models.
 - Models of social capital, collective action, social movements.
 - Coevolution of network and behavior.

 May 17, 2013
 Abstract submission deadline

 June 19, 2013
 Notification of acceptance

 September 19, 2013
 Satellite meeting

 In order to encourage the development of predictive, data-driven models of
 collective phenomena, a link prediction competition will be held as part of
 the meeting. Monetary prizes will be awarded to the best contributions,
 which will be evaluated according to rigorous scientific criteria by the
 program committee of the event. 1st prize: US$800, 2nd prize: US$200.

 Further information (task, data set, dates) to be released soon.

 Yong-Yeol Ahn, Indiana University, US
 J. Doyne Farmer, University of Oxford, UK
 Dirk Helbing, ETH Zürich, Switzerland
 Jure Leskovec, Stanford University, US
 Alessandro Vespignani, Northeastern University, US

 The best original contributions will be invited to submit an extended
 version for inclusion in a special issue of EPJ Data Science (Springer).

 Giovanni Luca Ciampaglia, Indiana University, US
 Emilio Ferrara, Indiana University, US
 Alessandro Flammini, Indiana University, US
 Filippo Menczer, Indiana University, US

 Luca M. Aiello, Yahoo Research Barcelona, Spain
 Andrea Baronchelli, Northwestern University, US
 Pasquale De Meo, University of Messina, Italy
 Santo Fortunato, Aalto University, Finland
 Jacob Foster, University of Chicago, US
 Matteo Gagliolo, Université Libre de Bruxelles, Belgium
 Bruno Gonçalves, Aix-Marseille Université, France
 Andrea Lancichinetti, Northwestern University, US
 Michael Mäs, ETH Zürich, Switzerland
 Tamás Nepusz, Eötvös Loránd University, Hungary
 Orion Penner, IMT Lucca, Italy
 Nicola Perra, Northeastern University, US
 Filippo Radicchi, Universitat Rovira i Virgili, Spain
 José J. Ramasco, IFISC, Spain
 Carlos Roca, Universitat Rovira i Virgili, Spain
 Giancarlo Ruffo, University of Turin, Italy
 Daniel Villatoro, Barcelona Digital Technology Centre, Spain

***** Apologies for multiple copies ***** You are cordially invited to submit a contribution to "Collective Behaviors and Networks", a one-day satellite event of the 2013 European Conference on Complex Systems (ECCS'13), to be held in Barcelona, September 19, 2013. Goal of this workshop is to provide a discussion venue about advances in the study of networks applied to the dynamics of social collective behaviors. Particular attention will be devoted, but not limited to, the following topics: - Group formation, evolution and group behavior analysis. - Modeling, tracking and forecasting dynamic groups in social media. - Community detection and dynamic community structure analysis. - Social simulation, cultural, opinion, and normative dynamics. - Empirical calibration and validation of agent-based social models. - Models of social capital, collective action, social movements. - Coevolution of network and behavior. More information on COVEnANT2013 can be found here: http://covenant2013.com More information on ECCS'13 can be found here: http://eccs13.eu Requirements Participants are invited to submit their contributions via the EasyChair system at the following link: https://www.easychair.org/conferences/?conf=covenant2013 Contributions must be at most 2 pages long, and must provide the following information: title, list of authors with affiliations, and abstract. Accepted format is PDF only. More information, about selection, registration, etc., can be found here: http://www.covenant2013.com/?page_id=25 Important Dates May 17, 2013 Abstract submission deadline June 19, 2013 Notification of acceptance September 19, 2013 Satellite meeting Data Challenge In order to encourage the development of predictive, data-driven models of collective phenomena, a link prediction competition will be held as part of the meeting. Monetary prizes will be awarded to the best contributions, which will be evaluated according to rigorous scientific criteria by the program committee of the event. 1st prize: US$800, 2nd prize: US$200. Further information (task, data set, dates) to be released soon. Keynote Speakers Yong-Yeol Ahn, Indiana University, US J. Doyne Farmer, University of Oxford, UK Dirk Helbing, ETH Zürich, Switzerland Jure Leskovec, Stanford University, US Alessandro Vespignani, Northeastern University, US Special Issue The best original contributions will be invited to submit an extended version for inclusion in a special issue of EPJ Data Science (Springer). Organizing Committee Giovanni Luca Ciampaglia, Indiana University, US Emilio Ferrara, Indiana University, US Alessandro Flammini, Indiana University, US Filippo Menczer, Indiana University, US Program Committee Luca M. Aiello, Yahoo Research Barcelona, Spain Andrea Baronchelli, Northwestern University, US Pasquale De Meo, University of Messina, Italy Santo Fortunato, Aalto University, Finland Jacob Foster, University of Chicago, US Matteo Gagliolo, Université Libre de Bruxelles, Belgium Bruno Gonçalves, Aix-Marseille Université, France Andrea Lancichinetti, Northwestern University, US Michael Mäs, ETH Zürich, Switzerland Tamás Nepusz, Eötvös Loránd University, Hungary Orion Penner, IMT Lucca, Italy Nicola Perra, Northeastern University, US Filippo Radicchi, Universitat Rovira i Virgili, Spain José J. Ramasco, IFISC, Spain Carlos Roca, Universitat Rovira i Virgili, Spain Giancarlo Ruffo, University of Turin, Italy Daniel Villatoro, Barcelona Digital Technology Centre, Spain -- Giovanni Luca Ciampaglia Postdoctoral fellow Center for Complex Networks and Systems Research Indiana University ✎ 910 E 10th St ∙ Bloomington ∙ IN 47408 ☞ http://cnets.indiana.edu/ ✉ gciampag@indiana.edu