Distributed immune time-delay SEIR-S model for new power system information network virus propagation
发布时间：2023-06-09
点击次数：
DOI码：10.3233/JIFS-220575
发表刊物：Journal of Intelligent & Fuzzy Systems
关键字：New power system, information network, computer virus, SEIR-S model, distributed immune time-delay
摘要：The new power system information network has the security problem of computer virus attack, and the study of its transmission mechanism is helpful to discover the law and influence of virus transmission. In this paper, the research method of epidemic theory is introduced, and a new Susceptible-Exposed-Infectious-Recovered-Susceptible(SEIR-S) virus model is proposed. The immune time-delay parameter is introduced to simulate the evolution and mutation of the virus so that nodes immune to the virus can still be re-infected after a certain time interval. At the same time, the immune time of different nodes is different, and the distributed immune time delay is used to enhance the authenticity of the simulated virus transmission; and considering the influence of the scale-free characteristics of the information network, this paper establishes a continuous Markov chain based on time. The transmission process of the virus, and then deduce the theoretical analysis results of the virus infection rate threshold. Based on theoretical analysis, the propagation process of the SEIR-S virus model with distributed immune time delay was simulated by using the Monte Carlo method, and the accuracy of the threshold formula of virus infection rate was verified. The influence rule of the hysteresis parameter, that is, increasing the average immune time of nodes to viruses can reduce the infection density of the network in a steady, and at the same time, making the immune time of network nodes obey a normal distribution can effectively reduce the oscillation effect of viruses on the network.
第一作者：Shao,Sijie
论文类型：期刊论文
通讯作者：Li,Zhiyong
文献类型：J
卷号：44
期号：4
页面范围：6865–6876
是否译文：否
发表时间：2023-04-03
收录刊物：SCI、EI