关键词: 动态信任模型, 对等网络, 检测

Abstract: Currently there exists slander, exaggeration, cooperative cheating, strategic deception and other malicious transactions problems in P2P network. The rapid increasing proportion of malicious nodes results in rapid decline of system trading?success rate. This paper proposes a trust model which has a detection mechanism and good convergence. Simultaneously, it makes use of the service widespread degree evaluation mechanism, the periodic strategy similarity detection mechanism and the evaluation similarity detection mechanism. They efficiently suppress?bad service of malicious nodes. By comparison with current several typical global trust models, simulation results show that this model has improved greatly in the transaction success rate.

Key words: dynamic trust model, peer-to-peer network, detection