A P2P Trust Model Based on Preference

In order to decrease unfair evaluations to service peers in peer-to-peer network, a trust model based on the declaration of preference is proposed in this paper, which considers the similarity between two peers´ preferences. The trust model gives the declaration of preference, and proposes algorithms to carry out the computations. Experiments show that our model is better than the trust model without the consideration of preference, and can improve the quality of service in P2P networks effectively.