Physics – Physics and Society
Scientific paper
2011-10-25
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.
Eguiluz Victor M.
Grabowicz Przemyslaw A.
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