基于QoS的语义Web服务选择

摘要

针对传统Web服务选择方法缺乏语义信息支持,不能满足用户准确需求的问题,将量化的QoS属性作为启发信息,将Web服务组合问题转化为与或图搜索问题,引入AO*算法进行Web服务选择.仿真结果表明,所提方法对于Web服务组合问题是有效的,同时提高了组合效率.%Focused on the problems of semantic information lacking and the unappeasable user requirements of the traditional methods for Web service selection,the quantitative QoS properties were used as the heuristic information,and the Web service composition was transformed into the problem of searching and-or-graph in our work.The AO* algorithm was applied to find the optimal Web service last.The simulation results show that the proposed method is effective for the Web service composition and the composition efficiency is enhanced too.