文献类型：会议论文

英文题名：A Heuristic QoS-Aware Service Selection Approach to Web Service Composition

作者：Liu, Dongmei[1];Shao, Zhiqing[1];Yu, Caizhu[1];Fan, Guisheng[1]

机构：[1]E China Univ Sci & Technol, Dept Comp Sci & Engn, Shanghai 200237, Peoples R China

会议论文集：8th IEEE/ACIS International Conference on Computer and Information Science

会议日期：JUN 01-03, 2009

会议地点：Shanghai, PEOPLES R CHINA

语种：英文

外文关键词：Web service; QoS; selection algorithm; convex hull

摘要：Web service composition is a flexible way for resource sharing and application integration. However, how to guarantee quality of service composition remains a challenging problem. This paper proposes a heuristic approach to optimizing service selection for composition so that the user's QoS expectation is satisfied. Optimization is enforced for constraints in both local and global level. For each level, a mathematical model is established, and the corresponding heuristic algorithm to solve Web service selection problem by using convex hull frontiers method is proposed. Furthermore, Multiple Criteria Decision Making (MCDM) technique is applied to merge multiple dimensional resources in the heuristic algorithms. Finally, a case study demonstrates feasibility and efficiency of our method.