The features of autonomy, anonymity and distribution make the P2P system vulnerable to malicious attack and abuse. A feasible resolution in such an open environment is to exploit a community-based trust model to build trust relationship between peers. However, the existing model ignores the dynamic feature, the scope of activity and the influence of peers. After analyzing the P2P user model, a topological potential based recommendation trust model is proposed to integrate the influences, transactions, and reputations of nodes. In this model, the trust metrics are divided into intra- and inter-community computing mechanism. Moreover, the algorithm of selecting super node is presented. Simulation results show that the proposed trust model is effective and robust.
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2015, Vol. 37 
