Abstract:

Proposed in this paper is a DRQSHCTAgent model to reduce the risks caused by agents’contract violations. In this model,multiple schemes of the task are obtained by introducing service compositions and recipes; a direct credit is defined in terms of the moral and the service credits; the concealing of the service credit is uncovered by defining multiple service credits; the shortcomings of individual chain recommendation are overcome by the group recommendation; and the solving schemes are selected and optimized by calculating the scheme credit. The proposed model improves the rationality and maneuverability of the credit calculation with the help of contract samples,and ensures the self-organizing cooperation credibility and the system reliability due to the contract-based constraints. Both the design instance and the experiment indicate that the proposed model is more suitable for the resolution of trust cooperation problem in open environments.

Key words: DRQS_HCTAgent, trust cooperation, Agent credit, contract, multi-Agent system