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Scale-Free networks from varying vertex intrinsic fitness

Caldarelli, Guido and Capocci, Andrea and De Los Rios, Paolo and Muñoz, Miguel A. Scale-Free networks from varying vertex intrinsic fitness. Physical Review Letters, 89 (25). ISSN 0031-9007 (2002)

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A new mechanism leading to scale-free networks is proposed in this Letter. It is shown that, in many cases of interest, the connectivity power-law behavior is neither related to dynamical properties nor to preferential attachment. Assigning a quenched fitness value xi to every vertex, and drawing links among vertices with a probability depending on the fitnesses of the two involved sites, gives rise to what we call a good-get-richer mechanism, in which sites with larger fitness are more likely to become hubs (i.e., to be highly connected).

Item Type: Article
Identification Number: 10.1103/PhysRevLett.89.258702
Additional Information: © 2002 American Physical Society
Uncontrolled Keywords: PACS: 89.75.Hc, 89.75.Da
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QC Physics
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 21 Feb 2012 10:52
Last Modified: 05 Dec 2014 09:27
URI: http://eprints.imtlucca.it/id/eprint/1137

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