一种有QoS保障的Web服务组合方法  

A QoS-Guaranteed Method of Web Services Composition

作　　者：殷荣网[1] 冒志建[2] Yin Rong-wang,Mao Zhi-jian （1.Department of Basic Courses HeFei University HeFei An Hui 230022 ;2.Department of Computer ChangZhou Institute of Engineering Technology ChangZhou JiangSu 213164）

机构地区：[1]合肥学院基础教学部,安徽合肥230022 [2]常州工程职业技术学院计算机系,江苏常州213164

出　　处：《电脑知识与技术》2007年第6期1276-1278,共3页Computer Knowledge and Technology

摘　　要：随着可用Web Services数量的快速增长，如何根据用户的需求来自动组合Web Services，生成满足用户需求的组合业务，成为一项亟待解决的课题。提出了一种基于QoS的启发式算法，通过该算法，动态调用Web Services来自动生成满足用户所需目标的Web Service组合．同时，该算法还能够根据Web Services组合经验，对以后的Web Services组合方案进行调整。实验结果表明：该算法能够很好地适应网络上Web Services的不确定情况，与同类算法进行性能比较，也显示出较好的性能。With the growing number of available Web Services, it is an imperative task to study how to compose Web Services based on the requirements of the customers.The QoS-based method automatically composes Web Services directly according to the customers＇ requirements, and then executes the composed services to achieve the customers＇ goals. Based on the historic records of Web Services compositions, this method uses a heuristic approach to adjust the composition scheme. Experimental results show that the method is well fits for the volatile environment and yields better performance over other algorithms.

关 键 词：WEB服务 服务质量 服务组合 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]