Comment on "Dynamics and Directionality in Complex Networks"

Details Comment on "Dynamics and Directionality in Complex Networks" Comment on "Dynamics and Directionality in Complex Networks"

2010-06-28

arxiv.org/abs/1006.5293v1

Physics

Physics and Society

1 page, 2 figures

Scientific paper

Authors of Phys. Rev. Lett. 103, 228702 (2009) claim that "The residual degree gradient (RDG) method can enhance thesynchronizability of networks by simply changing the direction of the links". In this paper, we argue that in some case the RDG method will lead to the failure of synchronization ($R=\lambda^{r}_{2}/\lambda^{r}_{N}=0$). Additionally, we also propose a so-called residual betweenness gradient (RBG) method to solve this problem.

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