A novel contract net negotiation model based on trust mechanism

Traditional contract net protocols can simply and flexibly solve the negotiation problem of multi-agent system (MAS). But they canpsilat work very well within the large scale system environment and is ineffective to solve the multi-issue negotiation problem. This paper investigates the reputation contract net protocol (RCNP) and proposes a novel contract net negotiation model based on RCNP. The model synthesizes the previous trust information and the multi-issue negotiation information which can greatly reduce the computational cost introduced by the unnecessary negotiation processes. In order to demonstrate the advantages of the model, a set of experiments were carried out on the JATLite (Java agent template lite) platform. Experimental results indicate that the proposed model improved the performance of the MAS system and the accuracy of the trust evaluation of the negotiation process.