Heterogeneity shapes groups growth in social online communities

Details Heterogeneity shapes groups growth in social online communities Heterogeneity shapes groups growth in social online communities

2011-10-25

arxiv.org/abs/1110.5673v2

EPL 97 (2012) 28002

Physics

Physics and Society

5 pages, 3 figure panels

Scientific paper

10.1209/0295-5075/97/28002

Many complex systems are characterized by broad distributions capturing, for example, the size of firms, the population of cities or the degree distribution of complex networks. Typically this feature is explained by means of a preferential growth mechanism. Although heterogeneity is expected to play a role in the evolution it is usually not considered in the modeling probably due to a lack of empirical evidence on how it is distributed. We characterize the intrinsic heterogeneity of groups in an online community and then show that together with a simple linear growth and an inhomogeneous birth rate it explains the broad distribution of group members.

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