网络病毒传播模型与分析

NETWORK VIRUS PROPAGATION MODEL AND ITS ANALYSIS

互联网是一个不断生长与消亡的具有小世界与无标度特性的网络。基于此,在聚类系数可变的无标度网络上建立病毒传播模型。研究节点消亡速度、网络平均度、计算机连接度对病毒传播的影响。实验结果表明:节点的消亡速度越快,越能减缓病毒的爆发速度;网络的平均度越大,病毒传播越快;病毒爆发常发生在连接度较高的计算机上。这些结论对于防范病毒在互联网上的传播,具有重要的现实意义。

Internet is such a network which undergoes continuous growth and demise and has the characteristics of small-world andscale-free.Based on this,we build a virus propagation model on scale-free network with variable clustering coefficient.We study the impactsof nodes demise speed,network average degree and computer connection degree on virus propagation.Experimental results demonstrate that,the faster the demise speed of nodes,the more the outbreak speed of virus to be retarded;the bigger the network average degree,the fasterthe viruses propagate;virus outbreaks often occur on the computers with higher connection degree.These conclusions have important realisticsignificance for the prevention of the spread of the virus on Internet.