一种基于D-S理论的P2P网络信任模型

随着P2P网络在许多领域的广泛应用，有必要建立P2P网络的信任机制．根据P2P网络中对等体之间的平等关系和松耦合特性，提出了一种基于Dempster-Shafer证据理论的P2P网络信任模型．该模型给出了信任辨别框、基本信任概率分配函数以及置信区间的定义，并在此基础上建立了P2P网络的信任传递机制和信任聚合机制．把该模型应用于基于P2P的制造资源网络中证明了其正确性和合理性．

A D-S evidence theory based trust model for the P2P network

Along with the wide application of the P2P network in various areas, it is necessary to establish the trust mechanism of the P2P network. According to the equal relationship and loose coupling characteristics among peers in a P2P network, a Dempster-Shafer evidence theory based trust model for the P2P network is proposed. The frame of trust discernment, the basic trust probability assignment and the trust interval are defined in this model, on the basis of which the trust transfer mechanism and the clustering mechanism are established. Application of this model in P2P-based manufacturing resource networks (PMRN) proves its correctness and reasonableness.