Behaviors of susceptible infected epidemics on scale-free networks with identical infectivity

Liu, Jianguo, Zhou, Tao, Bai, Wen-Jie, Chen, Ganrong and Wang, Bing-Hong (2006) Behaviors of susceptible infected epidemics on scale-free networks with identical infectivity. Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), 74 (5). 056109.

Abstract

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.

Item Type: Article
Keywords: Biological Physics; Infection Rate
Subject(s): Complexity
Centre: CABDyN Complexity Centre
Date Deposited: 25 Jan 2012 20:55
Last Modified: 23 Oct 2015 14:07
URI: http://eureka.sbs.ox.ac.uk/id/eprint/2759

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