关键词: 信任传递, 偏离度, 三角不等式

Abstract: In order to address the problem that most current reputation models cannot build trust chain efficiently，this paper proposes a trust transfer method based on feedback’s departure degree.It considers the average departure degree of the peers giving feedback as their distance’s ruler.To those peers having no common partners，it uses triangle inequality to calculate their global average departure degree through their trust path built by other peers.Then it finishes the trust transfer and can combine the peer’s direct experience and indirect experience together.The simulation results demonstrate that this trust transfer method is effective.

Key words: trust transfer, departure degree, triangle inequality