Disease spreading on fitness-rewired complex networks
Disease spreading on fitness-rewired complex networks
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DOI：
10.1016/j.physa.2011.06.047
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发表时间：
2011-11
影响因子：
3.3
通讯作者：
J. Yoo;Julian Lee;B. Kahng
中科院分区：
文献类型：
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作者：
J. Yoo;Julian Lee;B. Kahng
当人们旅行时，人类接触网络的拓扑结构可能会不时发生变化。在本文中，我们研究了这种动态网络上的流行病传播问题，特别是对边进行动态重新布线以保留每个节点的度数的网络（称为适应度重新布线）。我们还考虑边缘的自适应重新布线，这鼓励与受感染节点断开连接并阻止与受感染节点的连接，并最终导致受感染者与易感者之间仅存在少量链接的隔离。我们发现，虽然流行病传播的阈值保持不变，并且在适应度重新布线动态中患病率增加，但流行病阈值的满足被延迟并且患病率降低（如果包括适应性动态）。为了理解这些不同的行为，我们引入了一种称为“有效链接的平均变化”的新测量方法，并发现病原体传播途径的创建和删除分别是适应性和适应性重连动态的主导因素。
As people travel, human contact networks may change topologically from time to time. In this paper, we study the problem of epidemic spreading on this kind of dynamic network, specifically the one in which the rewiring dynamics of edges are carried out to preserve the degree of each node (called fitness rewiring). We also consider the adaptive rewiring of edges, which encourages disconnections from and discourages connections to infected nodes and eventually leads to the isolation of the infected from the susceptible with only a small number of links between them. We find that while the threshold of epidemic spreading remains unchanged and prevalence increases in the fitness rewiring dynamics, meeting of the epidemic threshold is delayed and prevalence is reduced (if adaptive dynamics are included). To understand these different behaviors, we introduce a new measure called the “mean change of effective links” and find that creation and deletion of pathways for pathogen transmission are the dominant factors in fitness and adaptive rewiring dynamics, respectively.