Europhys. Lett.
Volume 68, Number 2, October 2004
Page(s) 316 - 322
Section Interdisciplinary physics and related areas of science and technology
Published online 01 October 2004
Europhys. Lett., 68 (2), pp. 316-322 (2004)
DOI: 10.1209/epl/i2004-10194-5

Biology helps to construct weighted scale-free networks

A. Ramezanpour

Department of Physics, Sharif University of Technology P.O. Box 11365-9161, Tehran, Iran and Institute for Advanced Studies in Basic Sciences - Zanjan 45195-159, Iran

received 14 June 2004; accepted in final form 25 August 2004

In this work we study a simple evolutionary model of bipartite networks whose evolution is based on the duplication of nodes. Using analytical results along with numerical simulation of the model, we show that the above evolutionary model results in weighted scale-free networks. Indeed we find that in the one-mode picture we have weighted networks with scale-free distributions for interesting quantities like the weights, the degrees and the weighted degrees of the nodes and the weights of the edges.

89.75.-k - Complex systems.
89.75.Fb - Structures and organization in complex systems.

© EDP Sciences 2004