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arXiv 1205.4352physics.soc-ph
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自适应网络中基于社区的有效控制策略

Efficient community-based control strategies in adaptive networks

Hui Yang, Ming Tang, Hai-Feng Zhang

摘要:

目前对自适应网络的研究主要集中在稳态特性上,而忽略了暂态动态特性。本研究关注的是瞬时过程中社区结构的形成以及社区控制策略对传染病传播的影响。首先,通过规范化模块度$Q$,我们研究了社区结构在传播过程中的演化,发现在传染病传播的早期阶段,由于重新布线机制的作用,社区结构会产生很强的影响,从而显著延缓了传染病的爆发。然后研究不同阶段的控制策略对患病率的影响。免疫策略和检疫策略都表明,实施控制措施并不是“越早越好”。如果在群落结构较强的时期能有效地实施控制措施,则可获得最佳的控制效果。对于免疫策略,免疫SI链路上的S节点和随机免疫S节点具有相似的控制效果。而对于隔离策略,隔离SI链路上的I节点比随机隔离I节点的效果要好得多。更重要的是,基于社区的检疫策略比基于社区的免疫策略发挥更有效的性能。本研究为人群流行病的预测和预防提供了新的思路。

英文摘要:

Most researches on adaptive networks mainly concentrate on the properties of steady state, but neglect transient dynamics. In this study, we pay attention to the emergence of community structures in transient process and the effects of community-based control strategies on epidemic spreading. First, by normalizing modularity $Q$, we investigate the evolution of community structures during the transient process, and find that very strong community structures are induced by rewiring mechanism in the early stage of epidemic spreading, which remarkably delays the outbreaks of epidemic. Then we study the effects of control strategies started from different stages on the prevalence. Both immunization and quarantine strategies indicate that it is not "the earlier, the better" for the implementing of control measures. And the optimal control effect is obtained if control measures can be efficiently implemented in the period of strong community structure. For immunization strategy, immunizing the S nodes on SI links and immunizing S nodes randomly have similar control effects. Yet for quarantine strategy, quarantining the I nodes on SI links can yield far better effects than quarantining I nodes randomly. More significantly, community-based quarantine strategy plays more efficient performance than community-based immunization strategy. This study may shed new lights on the forecast and the prevention of epidemic among human population.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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