Web Service Composition Based on QoS Rules

作     者：张明卫 张斌 刘莹 那俊 朱志良 

作者机构：College of SoftwareNortheastern University College of Information Science and EngineeringNortheastern University 

出 版 物：《Journal of Computer Science & Technology》 (计算机科学技术学报（英文版）)

年 卷 期：2010年第25卷第6期

页      面：1143-1156页

核心收录：

学科分类：08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 

基　　金：supported by the National Natural Science Foundation of China under Grant Nos.60773218,60903009 and 61073062 the National High Technology Research and Development 863 Program of China under Grant No.2009AA01Z122 

主　　题：service composition service selection QoS data mining production rules 

摘      要：For workflow-based service composition approach,the relations between the Web service QoS and environments are usually not considered,so that the information about QoS for composite service selection is *** makes the selected composite service inefficient,or even *** address this problem,a novel service composition approach based on production QoS rules is proposed in this ***,it is very difficult to directly analyze how different kinds of environment factors influence the Web service *** adopt ＂black-box＂ analysis method of optimizing composite services,discovering the knowledge such as ＂the QoS of one Web service will be higher in specific environments＂.In our approach,the execution information of the composite service is recorded into a log first,which will be taken as the basis of the subsequent statistical analysis and data ***,the timely QoS values of the Web services are estimated and the production QoS rules being used to qualitatively express the different performances of the Web service QoS in different environments are *** last,we employ the mined QoS knowledge of the Web services to optimize the composite service *** experimental results show that our approach can improve the performance of selected composite services on the premise of assuring the selecting computation cost.