Scale-free networks from varying vertex intrinsic fitness

Phys Rev Lett. 2002 Dec 16;89(25):258702. doi: 10.1103/PhysRevLett.89.258702. Epub 2002 Dec 3.

Abstract

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).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Internet
  • Models, Theoretical*
  • Proteins
  • Social Support

Substances

  • Proteins