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The characteristics of dynamic, heterogeneity and limited resources of nodes result in the existence of selfish behavior of nodes in MP2P network, which affect the network performance. To improve the performance of MP2P, an evaluation model for node reputation is established by combining the analytic hierarchy process with the fuzzy comprehensive evaluation technology in this paper. Direct trust, indirect trust, residual energy and active degree of nodes are used as the fundamental variables and their weights are determined by using analytic hierarchy process. And then the reputation of nodes is calculated using membership function and fuzzy comprehensive evaluation method. Nodes with high reputation are allowed to participate in the communication and nodes with low reputation are not allowed. The experimental simulation results show that our model can not only effectively improve the delivery ratio of packet but also reduce the average latency and overload ratio of the network. KeywordsMP2P network; trust; reputation evaluation model; analytic hierarchy process; fuzzy comprehensive evaluation

A Node Reputation Evaluation Model for Mobile P2P