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Monday, May 14, 2012
2:00 PM - 3:00 PM
CNLS Conference Room (TA-3, Bldg 1690)


Modeling the structure and evolution of online discussion cascades

Vicenc Gomez Cerda
SNN Radboud, University of Nijmegen, The Netherlands

Online discussion threads are conversational cascades in the form of posted messages that can be generally found in social systems that comprise many-to-many interaction such as blogs, news aggregators or bulletin board systems. We propose a framework based on generative models of growing trees to analyse the structure and evolution of discussion threads. We consider the growth of a discussion to be determined by an interplay between popularity, novelty and a trend (or bias) to reply to the thread originator. The relevance of these features is estimated using a full likelihood approach and allows to characterize the habits and communication patterns of a given platform and/or community.

Host: Misha Chertkov,, 665-8119