计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (24): 65-68.

• 学术探讨 • 上一篇    下一篇

基于QoS的Web服务组合的全局优化方法

万里平1,高春鸣1,2,肖 伟1,2,苏 亮2   

  1. 1.湖南师范大学 数学与计算机科学学院,长沙 410081
    2.国防科技大学 计算机学院,长沙 410073
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-08-21 发布日期:2007-08-21
  • 通讯作者: 万里平

Global optimization method of Web services composition based on QoS

WAN Li-ping1,GAO Chun-ming1,2,XIAO Wei1,2,SU Liang2   

  1. 1.College of Mathematics and Computer Science,Hunan Normal University,Changsha 410081,China
    2.School of Computer Science,National University of Defense Technology,Changsha 410073,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-08-21 Published:2007-08-21
  • Contact: WAN Li-ping

摘要: 研究在服务组合预先优化阶段及在运行时容错处理阶段对重构的服务组合进行基于QoS的在线全局优化方法,提出并实现了一种结合修正单纯形法和启发式枚举法解决多目标全局组合最优化问题,加快了解空间搜索的收敛速度以及提高了目标函数的优化水平。

关键词: 服务组合, 全局优化, 整数规划

Abstract:

This paper investigates the QoS-based online global optimization method which can be used in the Web services pre-optimization phase and the replanted Web services composition in the running fault-tolerance phase.Our main contribution is that we propose a method which composites the modified simplex method and the heuristic enumerate method to solve the multi-objective global optimization problem,which makes the convergent rate of searching solution space faster and enhance the optimization level of the target function.

Key words: service composition, global optimization method, integer programming