Random-QoS-aware reliable web service composition

被引：30

作者：

Fan, Xiao-Qin ^{[1
,2
,3
]}

Jiang, Chang-Jun ^{[1
,2
]}

Wang, Jun-Li ^{[1
]}

Pang, Shan-Chen ^{[1
,4
]}

机构：

[1] Electronics and Information Engineering School, Tongji University

[2] Key Laboratory of Embedded System and Service Computing, Tongji University

[3] Computer and Information Technology School, Shanxi University

[4] College of Information Science and Engineer, Shandong University of Science and Technology

来源：

Ruan Jian Xue Bao/Journal of Software | 2009年 / 20卷 / 03期

关键词：

Markov decision process; Random QoS; Reliable composition; Web service; Web service composition;

D O I：

10.3724/SP.J.1001.2009.03339

中图分类号：

学科分类号：

摘要：

In the service-oriented environment, a single Web service can hardly satisfy the given request, so the composition of multiple Web services is required to fulfill the goal. Without considering the inherent stochastic and dynamic nature of Web service, the existing composition methods mostly generate static plans. As a result, Web service composition often terminates with failure inevitably. In this paper, metrical methods of several random QoS dimensions and QoS Management Architecture are presented, and one reliable Web service composition algorithm is also designed based on markov decision process (MDP)-only dynamic controlling method of stochastic discrete event system (SDES). Experimental results demonstrate the success rate of Web service composition has been improved greatly. © by Institute of Software, the Chinese Academy of Sciences. All rights reserved.

引用

页码：546 / 556

页数：10

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