Quantification of Topic Propagation Using Percolation Theory: A Study of the ICWSM Network

Ali Azimi Bolourian, Yashar Moshfeghi, and C. J. van Rijsbergen

Blogs facilitate online debates and discussions for millions of people around the world. Identifying the most popular and prevailing topics discussed in the Blogo-sphere is a crucial task. This paper describes our novel approach to the quantification of the level of topic propagation in the Blogosphere. It tries to answer one key question: How many people should know about a subject before it becomes prevalent? Our model uses graph-theoretic representations of the Blogosphere's link structures that allows it to deduce the Percolation Threshold, which is then used in the quantification and definition of a prevalent or 'Global' topic. We applied our approach and analysed the social structure of the ICWSM data collection to find the answer.

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