文献类型：会议论文

英文题名：Optimizing Service Selection by User's QoS Expectation

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

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

会议论文集：International Multi-Conference of Engineers and Computer Scientists

会议日期：MAR 18-20, 2009

会议地点：Kowloon, PEOPLES R CHINA

语种：英文

外文关键词：QoS; service composition; expectation; reputation

摘要：QoS is of paramount importance for Web services to function. However, it is a challenging problem to construct services that meet user's QoS expectation. This paper proposes an optimization method for service selection in constructing applications through service composition. In order to make quality rating accurate, ingredients of service reputation and expectation similarity are included in quality evaluation. Optimization of Web services selection is performed at both basic service level and composite service level, which results in optimized service applications to satisfy user's QoS expectation. A case study demonstrates feasibility of the method.