基于传染病动力学模型的P2P文件传播研究

Research on P2P file propagation based on epidemic dynamics model

利用具有空间动力的多种群传染病传播模型的构建方法,充分考虑了P2P文件共享系统中节点的不同状态和变化,提出一种P2P文件传播模型.同时,给出了可以描述P2P文件传播效率的基本再生数计算公式.试验结果表明,该模型对于流行文件的下载情况符合较好,具有良好的应用价值.

With the conformation method of the multi-species epidemic model with spatial dynamics, this paper proposes a file propagation model of P2P file-sharing system, in which, different states of peers are adequately taken into account in the model. Simultaneously, the basic reproduction ratio of file-propagation is deduced based on the model, which shows the efficiency of file propagation. In the end, the results of experiments make it clear that the model accords with practice and have favorable application value.