Epidemic spreading in scale-free networks
Epidemic spreading in scale-free networks
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DOI：
10.1103/physrevlett.86.3200
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发表时间：
2001-04-02
影响因子：
8.6
通讯作者：
Vespignani, A
中科院分区：
文献类型：
--
作者：
Pastor-Satorras, R;Vespignani, A
互联网具有非常复杂的连通性，最近由无标度网络类建模。这一特性对通信网络来说似乎非常有效，但同时也有利于计算机病毒的传播。我们分析了计算机病毒感染的真实数据，并找到了互联网上病毒株的平均寿命和持续时间。我们定义了一个无标度网络上感染传播的动力学模型。发现不存在流行阈值及其相关的临界行为。这种新的流行病学框架使计算机病毒的数据合理化，并有助于理解通信和社会网络上的其他传播现象。
The Internet has a very complex connectivity recently modeled by the class of scale-free networks. This feature, which appears to be very efficient for a communications network, favors at the same time the spreading of computer viruses. We analyze real data from computer virus infections and find the average lifetime and persistence of viral strains on the Internet. We define a dynamical model for the spreading of infections on scale-free networks. finding the absence of an epidemic threshold and its associated critical behavior. This new epidemiological framework rationalizes data of computer viruses and could help in the understanding of other spreading phenomena on communication and social networks.