关键词: Bayes信任模型, Web服务, 组合, 优化, 遗传算法

Abstract: To enhance the creditability of composite Web Service, an optimization method for Web service composition was proposed by combining Bayes trust model and Genetic Algorithm (GA). Bayes method was firstly applied to evaluate the trust degree of Web service. Then according to the basic composition structure, a computation model for mission completion success rate of Composite Web service was presented. At last, GA was adopted to optimize Web service composition. Simulation experiment results demonstrated that the method provided a scheme to optimize Web service composition, and enhanced mission completion success rate of composite Web service greatly.

Key words: Bayes trust model, Web service, composition, optimization, genetic algorithm