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Preferential attachment in the growth of social networks: the internet encyclopedia Wikipedia

Capocci, Andrea and Servedio, Vito D. P. and Colaiori, Francesca and Buriol, Luciana and Donato, Debora and Leonardi, Stefano and Caldarelli, Guido Preferential attachment in the growth of social networks: the internet encyclopedia Wikipedia. Physical Review E, 74 (3). ISSN 1539-3755 (2006)

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We present an analysis of the statistical properties and growth of the free on-line encyclopedia Wikipedia. By describing topics by vertices and hyperlinks between them as edges, we can represent this encyclopedia as a directed graph. The topological properties of this graph are in close analogy with those of the World Wide Web, despite the very different growth mechanism. In particular, we measure a scale-invariant distribution of the in and out degree and we are able to reproduce these features by means of a simple statistical model. As a major consequence, Wikipedia growth can be described by local rules such as the preferential attachment mechanism, though users, who are responsible of its evolution, can act globally on the network.

Item Type: Article
Identification Number: 10.1103/PhysRevE.74.036116
Additional Information: © 2006 American Physical Society
Uncontrolled Keywords: PACS: 89.75.Hc; 89.75.Da; 89.75.Fb
Subjects: H Social Sciences > HA Statistics
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 03 Feb 2012 14:29
Last Modified: 18 Dec 2014 16:02
URI: http://eprints.imtlucca.it/id/eprint/1109

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