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research article
Scale-free networks from varying vertex intrinsic fitness
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 x(i) 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).
Type
research article
Authors
Publication date
2002
Publisher
Published in
Volume
89
Article Number
258702
Subjects
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
March 22, 2010
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