Epidemic spread in weighted scale-free networks

Details Epidemic spread in weighted scale-free networks Epidemic spread in weighted scale-free networks

2004-08-02

arxiv.org/abs/cond-mat/0408049v3

Chinese Physics Letters 22, 510(2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 5 figures. Chin. Phys. Lett in Press 2005

Scientific paper

10.1088/0256-307X/22/2/068

In this letter, we investigate the detailed epidemic spreading process in scale-free networks with links' weights that denote familiarity between two individuals and find that spreading velocity reaches a peak quickly then decays in a power-law form. Numerical study exhibits that the nodes with larger strength is preferential to be infected, but the hierarchical dynamics are not clearly found, which is different from the well-known result in unweighed network case. In addition, also by numerical study, we demonstrate that larger dispersion of weight of networks results in slower spreading, which indicates that epidemic spreads more quickly on unweighted scale-free networks than on weighted scale-free networks with the same condition.

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