%T Scale-Free networks from varying vertex intrinsic fitness
%O ? 2002 American Physical Society
%V 89
%I American Physical Society
%K PACS: 89.75.Hc, 89.75.Da

%A Guido Caldarelli
%A Andrea Capocci
%A Paolo De Los Rios
%A Miguel A. Mu?oz
%D 2002
%L eprints1137
%X 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).
%J Physical Review Letters
%N 25
%R 10.1103/PhysRevLett.89.258702