一种保障响应时间的可靠Web服务组合方法  

Dependable Web Services Composition Method to Guarantee Response Time

作　　者：张付志[1] 赵伟伟[1] 周立娜[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《小型微型计算机系统》2010年第10期1959-1964,共6页Journal of Chinese Computer Systems

基　　金：国家"九七三"重点基础研究发展计划项目(2005CB321902)资助;河北省自然科学基金项目(F2008000877)资助;教育部科技发展中心基金项目(2009133311011)资助

摘　　要：N版本程序设计为提高W eb服务组合的可靠性提供一条有效途径,但是当要组合的相同功能的Web服务数量较多时,该方法将会使服务组合的时间开销过大.针对这一问题提出一种基于分组的可靠Web服务组合方法,该方法通过对相同功能的待组合W eb服务进行分组,找出每个分组中响应时间最短的Web服务,然后再利用N版本程序设计的思想进行W eb服务组合.仿真实验表明,该方法既能保证服务组合的可靠性,又能使服务组合的时间开销明显降低.N-version programming provides an effective way to improve the dependability of Web services composition. But if the number of web services with same function is enormous, it will cause the time of Web services composition to increase greatly. With this problem in mind, a dependable Web services composition method based on grouping was proposed. The Web services with same function were divided into groups and the web service with the shortest response time was selected. Based on it, Web services composition was executed by using N-version programming. The simulation results showed that our method can not only ensure the dependability of Web services composition but also reduce the time for Web services composition.

关 键 词：WEB服务组合 可靠性 N版本程序设计 分组 响应时间 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]