Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-08-30
Phys. Rev. E 74, 026104 (2006)
Physics
Condensed Matter
Statistical Mechanics
7 pages, 8 figures
Scientific paper
10.1103/PhysRevE.74.026104
We extend the merging model for undirected networks by Kim et al. [Eur. Phys. J. B 43, 369 (2004)] to directed networks and investigate the emerging scale-free networks. Two versions of the directed merging model, friendly and hostile merging, give rise to two distinct network types. We uncover that some non-trivial features of these two network types resemble two levels of a certain randomization/non-specificity in the link reshuffling during network evolution. Furthermore the same features show up, respectively, in metabolic networks and transcriptional networks. We introduce measures that single out the distinguishing features between the two prototype networks, as well as point out features which are beyond the prototypes.
Bernhardsson Sebastian
Minnhagen Petter
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