The P2P Grid trust model based on price motivate mechanism

Aiming to overcome the shortcomings of P2P Grid safety, this paper presents and constructs a new P2P Grid trust model based on price motivate mechanism, and then designs and achieves an algorithm based on the model. The penalty factor of the algorithm can prevent the bad behavior and attack of malicious peers from systems; the time attenuation function reflects the trust value real and current situation of peers; the path attenuation function ensures the effectiveness and reliability of trust link; the price motivate mechanism ensure not only profit maximization for resource suppliers, but also cost minimization for resource demanders. The simulation test verified that the algorithm reflect the dynamics of P2P Grid trust, motivates the activity of the good peers and ensures that the price motivate mechanism play a key regulation role in transaction market.