Physics – Biological Physics
Scientific paper
2006-04-11
Physical Review E 74, 056109 (2006)
Physics
Biological Physics
5 figures and 7 pages
Scientific paper
10.1103/PhysRevE.74.056109
In this article, we proposed a susceptible-infected model with identical infectivity, in which, at every time step, each node can only contact a constant number of neighbors. We implemented this model on scale-free networks, and found that the infected population grows in an exponential form with the time scale proportional to the spreading rate. Further more, by numerical simulation, we demonstrated that the targeted immunization of the present model is much less efficient than that of the standard susceptible-infected model. Finally, we investigated a fast spreading strategy when only local information is available. Different from the extensively studied path finding strategy, the strategy preferring small-degree nodes is more efficient than that preferring large-degree nodes. Our results indicate the existence of an essential relationship between network traffic and network epidemic on scale-free networks.
Bai Wen-Jie
Chen Guanrong
Liu Jian-Guo
Wang Bing-Hong
Zhou Tianchun
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