Comment on: 'Universal Behavior of Load Distribution in Scale-free Networks'

Details Comment on: 'Universal Behavior of Load Distribution in Scale-free Networks' Comment on: 'Universal Behavior of Load Distribution in Scale-free Networks'

2003-04-14

arxiv.org/abs/cond-mat/0304314v3

Phys. Rev. Lett. 91, 189803 (2003)

Physics

Condensed Matter

Disordered Systems and Neural Networks

1 page, 2 figures, shortened version for PRL

Scientific paper

10.1103/PhysRevLett.91.189803

In a previous Letter (cond-mat/0106565), Goh et al have presented a numerical study of the load--or betweenness centrality--distribution in a scale-free network whose degree distribution follows a power law with a tunable exponent $\gamma$. They showed that the load $\ell$ is distributed according to a power-law with exponent $\delta$. The authors claimed that $\delta$ is universal, ie. independent of the exponent $\gamma$. In this comment, we use two different ways of checking numerically this universality and we show that it does not hold.

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