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Web服务可靠性的阶段模型
引用本文:谢春丽,李必信,王喜凤,廖力.Web服务可靠性的阶段模型[J].东南大学学报(自然科学版),2012,42(1):40-44.
作者姓名:谢春丽  李必信  王喜凤  廖力
作者单位:1. 东南大学计算机科学与工程学院,南京211189;徐州师范大学计算机科学与技术学院,徐州221116
2. 东南大学计算机科学与工程学院,南京,211189
3. 东南大学计算机科学与工程学院,南京211189;安徽工业大学计算机学院,马鞍山243002
4. 安徽工业大学计算机学院,马鞍山,243002
基金项目:国家自然科学基金资助项目,国家教育部博士点基金资助项目,中科院计算机科学国家重点实验室开放基金资助项目,江苏省高校科研成果产业化推进项目资助项目,东南大学创新基金资助项目,徐州师范大学自然科学基金资助项目,安徽工业大学青年教师科研资助项目
摘    要:为了更全面地分析Web服务的失效过程,提高Web服务可靠性预测的精度,提出了一种Web服务可靠性的阶段模型.描述了SOA(service-oriented architecture)下Web服务在服务发布、服务发现、服务绑定、服务组合以及服务执行等各个阶段的失效过程,并根据Web服务在不同阶段的失效过程构建各个阶段的可靠性模型,将各阶段的可靠性模型集成起来即构成了Web服务的可靠性预测模型.通过实例描述了该模型的可靠性度量方法,并将该阶段模型和传统的可靠性模型进行了比较,实验结果表明了该可靠性阶段模型是有效的,因此比传统模型更加适用于Web服务.

关 键 词:服务失效  阶段模型  组合服务  可靠性

A staged model for Web services reliability
Xie Chunli , LiBixin , Wang Xifeng , Liao Li.A staged model for Web services reliability[J].Journal of Southeast University(Natural Science Edition),2012,42(1):40-44.
Authors:Xie Chunli  LiBixin  Wang Xifeng  Liao Li
Institution:1 (1School of Computer Science and Engineering,Southeast University,Nanjing 211189,China) (2School of Computer Science and Technology,Xuzhou Normal University,Xuzhou 221116,China)(3School of Computer Science,Anhui University of Technology,Ma’anshan 243002,China)
Abstract:To more comprehensively analyze the failure process of Web services and improve the prediction accuracy of reliability,a staged model for Web services reliability is proposed.Firstly,the failure processes of service publication,service discovery,service composition,service binding and service execution in service-oriented architecture(SOA) are described and reliability models in different stage are built according to different failure processes.Then,the staged reliability models are integrated to predict the reliability of Web services.A case study was designed to model the reliability and the staged model was compared with the traditional model.The experimental results show that our staged model can obtain better reliability prediction accuracy than traditional models.Thus,it is more applicable to Web services.
Keywords:service failure  stage model  composition service  reliability
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