Modeling Dynamic File Diffusion Behavior in P2P Networks

In this paper, according to the characteristics of popular files downloading and transmission, the various states of nodes in P2P file-sharing system are researched. Based on these various states of nodes, through a multi-species epidemic model with spatial dynamic, file diffusion model of P2P file-sharing system is proposed. By experiments, P2P file diffusion model is proved to accords with the actual situation and to have the ability simulating the behaviors of the peers in P2P network.