Fig. 1

Network model of the service rating system. As an independent object evaluation model, the evaluation system has nothing to do with the specific structure of the distributed network. As shown in figure, all nodes, including honest users and adversaries, provide collaborative services. Honest users cooperate with the network to publish and retrieve the service content of interest and always ensure that accurate service content is provided. Competitor nodes try to provide fake services and improve their visibility. Without a special content rating and evaluation system, users cannot accurately distinguish between true and false results. Our reputation evaluation system uses the network user group to score the services used. Any user in the system has a unique identity and can make his own evaluation on the services in the system