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一种服务聚合中QoS全局最优服务动态选择算法
引用本文:刘书雷,刘云翔,张帆,唐桂芬,景宁.一种服务聚合中QoS全局最优服务动态选择算法[J].软件学报,2007,18(3):646-656.
作者姓名:刘书雷  刘云翔  张帆  唐桂芬  景宁
作者单位:国防科学技术大学,电子科学与工程学院,湖南,长沙,410073
基金项目:国家高技术研究发展计划(863计划)
摘    要:Web服务作为一种新型的Web应用模式,近年来得到了迅速的发展.如何动态地把现存的各种Web服务整合起来以形成新的、满足不同用户需求的、增值的复杂服务已成为新的应用需求和研究热点.针对现有服务聚合中服务选择技术的不足,提出了一种解决服务聚合中服务动态选择QoS全局最优化问题的实现算法GODSS(global optimal of dynamic Web services selection).算法的主要思想是把服务动态选择全局最优化问题转化为一个带QoS约束的多目标服务组合优化问题,利用多目标遗传算法的智

关 键 词:服务聚合  服务选择  QoS全局最优化  多目标遗传算法
收稿时间:2005-05-11
修稿时间:2006-02-23

A Dynamic Web Services Selection Algorithm with QoS Global Optimal in Web Services Composition
LIU Shu-Lei,LIU Yun-Xiang,ZHANG Fan,TANG Gui-Fen and JING Ning.A Dynamic Web Services Selection Algorithm with QoS Global Optimal in Web Services Composition[J].Journal of Software,2007,18(3):646-656.
Authors:LIU Shu-Lei  LIU Yun-Xiang  ZHANG Fan  TANG Gui-Fen and JING Ning
Affiliation:School of Electronic Science and Ensineerins, National University of Defense Technolosy, Chanssha 410073, China
Abstract:As a new Web pattern, Web service has been rapidly developed in recent years. How to dynamically integrate the existent Web services to form a newly value-added and complex service to meet the requirement of different users is a popular research area. This paper presents an algorithm GODSS (global optimal of dynamic Web services selection) to resolve dynamic Web services selection with QoS global optimal in Web services composition. The essence of the algorithm is that the problem of dynamic Web Service selection with QoS global optimal is transformed into a multi-objective services composition optimization with QoS constraints. The theory of intelligent optimization of multi-objective genetic algorithm is utilized to produce a set of optimal Pareto services composition process with constraint principle by means of optimizing various objective functions simultaneously. Theoretical analysis and experimental results indicate the feasibility and efficiency of this algorithm.
Keywords:GODSS(global optimal of dynamic Web services selection)
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