无标度网络环境下E-mail病毒的传播模型

提出无标度网络环境下E-mail病毒的传播模型。通过对模型的求解，得到E-mail用户感染密度随传播率、恢复率和网络平均度变化的计算表达式。实验表明，在反病毒技术未出现前，用户感染密度最终将达到一个稳定状态，并通过实验证明了传播率与网络平均度是影响E-mail病毒蔓延的关键性因素。

E-mail Virus Spreading Model in Scale-free Network

An E-mail virus spreading model based on the scale-free network is proposed. By mathematical calculations, the density of infected users is obtained, and it is affected by many parameters, e.g., spreading rate, recovery rate and average degree of network, etc. Experiments show that the density of infected users finally becomes a stable state before anti-virus technique appearing. Moreover, the spreading rate and average of degree of network take the key important role in this phase.