The research on service composition trust based on cloud computing

According to the characteristics of services at multiple levels under cloud computing environment, a modeling mechanism of service composition trust is proposed. Analyzing QoS of sub service, matching it with trust evaluation standard, so the static trust evaluation of sub service is obtained. Processing the existing historical data of service composition, it can get the dynamic trust evaluation of sub service. The mode of service composition is put forward, and the algorithm of service composition trust is designed. The algorithm is based on sub service trust, considering the sub service weights and mode of service composition, has the characteristics of high accuracy and adaptability, and is suitable for application of service composition under cloud computing environment.