Scalable and Robust Reputation System for Grid
To solve the rationality,robustness and scalability problems in the reputation system in grid when depicts the trust relationship between inter-organization unacquainted entities,a scalable and robust reputation system is proposed.The proposed system constructs a virtual trust network on top of the grid infrastructure using trust relationships between entities and regards the organization-level trust relationship as crucial reference factor based on the global property of virtual trust network,which achieves rational trust evaluation between entities.Simulation experiment results show that the system depicts realistically the trust relationship between inter-organization grid entities and resists against fake transaction attack and slander attack efficiently.Besides,it shows high scalability.