Risk Estimate of Diseases in Scale-Free Networks

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（6）
• 页码范围: 2311-2314
• 页数: 4页
• 语种: 英文

摘要

We investigate the effect of risk estimate on the spread of diseases by the standard susceptible-infected-susceptible (SIS) model. The perception of the risk of being infected is explained as cutting off links among individuals, either healthy or infected. We study this simple dynamics on scaie-free networks by analytical methods and computer simulations. We obtain the self-consistency form for the infection prevalence in steady states. For a given transmission rate, there exists a linear relationship between the reciprocal of the density of infected nodes and the estimate parameter. We confirm all the results by sufficient numerical simulations.