ISPCA: IDPSO-Based Service Pool Construction Algorithm
QoS-driven web services selection plays an important role in web service composition. Since the selected services would fail down because of the dynamic network situation, this paper presents a service pool model to help users save more composite plans in one selection process. In addition, an efficient service pool construction algorithm, ISPCA, based on an Improved Discrete Particle Swarm Optimization (IDPSO) is also proposed. And the third contribution of our work was that a non-uniform mutation strategy (NUMS) is introduced to the global best particle in IDPSO to enhance the quality of composite plans in service pool. The results of experimental evaluation indicate that our approach significantly outperforms existing methods in execution time while selecting more combinations with better QoS performance.
service pool IDPSO non-uniform mutation strategy
Wenbin Wang Qibo Sun Fangchun Yang Xinchao Zhao
State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecomm School of Science Beijing University of Posts and Telecommunications Beijing, China
国际会议
西安
英文
684-688
2010-08-07（万方平台首次上网日期，不代表论文的发表时间）