[1]苏志勇,周颖,李必信.面向用户的Web服务可靠性计算模型[J].东南大学学报(自然科学版),2008,38(4):605-610.[doi:10.3969/j.issn.1001-0505.2008.04.012]
 Su Zhiyong,Zhou Ying,Li Bixin.User-oriented Web services reliability computing model[J].Journal of Southeast University (Natural Science Edition),2008,38(4):605-610.[doi:10.3969/j.issn.1001-0505.2008.04.012]
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面向用户的Web服务可靠性计算模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第4期
页码:
605-610
栏目:
计算机科学与工程
出版日期:
2008-07-20

文章信息/Info

Title:
User-oriented Web services reliability computing model
作者:
苏志勇 周颖 李必信
东南大学计算机科学与工程学院, 南京 211189
Author(s):
Su Zhiyong Zhou Ying Li Bixin
School of Computer Science and Engineering, Southeast University, Nanjing 211189, China
关键词:
面向用户 可靠性 结构属性
Keywords:
user-orientation reliability structure chart
分类号:
TP311.5
DOI:
10.3969/j.issn.1001-0505.2008.04.012
摘要:
基于SOA,从用户的角度分析并计算Web服务及其应用的可靠性.首先采用一种扩展的UDDI模型收集可靠性相关数据,计算基本服务的可靠性、转移失效率和转移概率.然后基于BPEL文档构造组合服务的结构图,定义其结构属性,将转移失效率作为基本服务可靠性的加权系数,给出各种结构的组合服务的可靠性计算公式.最后在此基础上设计可靠性预测的递归算法用于计算Web应用的可靠性.实验结果表明:基于结构图的方法具有简便性和易处理性.
Abstract:
An approach is introduced to analyze and compute the reliability of Web services based on service-oriented architecture(SOA)from the user’s perspective. Statistical data of reliability are first collected using an extended universal description, discovery and integration(UDDI)model, then the reliability, transition-probability and transition-failure rate of basic services are computed based on these data. A kind of structure chart is constructed for composite services based on the business process execution language(BPEL)document. Taking transition-failure rate as the weighted coefficients of reliability, the reliability formulae of several composite services are obtained. Finally, a recursive algorithm is built to evaluate the reliability of Web service application. The experimental results show that the structure chart-based approach is simple and tractable.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 苏志勇(1982—),男, 硕士生; 李必信(联系人),男,博士, 教授, 博士生导师, bx.li@seu.edu.cn.
基金项目: 江苏省自然科学基金资助项目(BK2007513)、国家自然科学基金资助项目(60773105,60473065)、国家高技术研究发展计划(863计划)资助项目(2007AA01Z141)、教育部新世纪优秀人才支持计划资助项目(NCET-06-0466).
引文格式: 苏志勇,周颖,李必信.面向用户的Web服务可靠性计算模型[J].东南大学学报:自然科学版,2008,38(4):605-610.
更新日期/Last Update: 2008-07-20