Regensburg 2010 – scientific programme
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 14: Social Systems, Opinion and Group Dynamics III
SOE 14.8: Talk
Wednesday, March 24, 2010, 15:45–16:00, H44
Stochastic model of group affiliation for an online community — •Przemyslaw A. Grabowicz1, Dario Taraborelli2, and Víctor Eguíluz M.1 — 1IFISC, Campus Universitat de les Illes Balears, E-07122, Palma de Mallorca, Spain — 2Centre for Research in Social Simulation, University of Surrey, Guildford GU2 7XH, United Kingdom
Flickr is an image and video hosting website and online community platform [1]. It is one of the earliest Web 2.0 applications. Members of the Flickr create its contents which are photos, tags, comments and groups. Users interact between themselves forming network of contacts, creating groups of common interests and producing collaborative contents for those groups. It has already been shown that social network formed in such a systems plays important role in information diffusion processes [2]. In this contribution we focus on the interaction between social network topology and group affiliation patterns. It is being predicted that homophily play important role in such a systems [3]. Using the data collected for the Flickr we quantify the importance of homophily in a real system. We introduce a stochastic model of groups and social ties dynamics in Flickr accounting for the findings.
[1] www.flickr.com [2] M. Cha, A. Mislove, B. Adams, K.P. Gummadi, Characterizing Social Cascades in Flickr, (2008) [3] Geard, N. and Bullock, S. Homophily and competition: a model of group affiliation, (2009)