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软件可靠性模型选择的SRMS算法
作者:丁晓光 张桂勇
来源:《电脑知识与技术·学术交流》2008年第29期
摘要:在软件可靠性评估中经常用到软件可靠性模型。如何对每一特定用例进行可靠性模型的选择一直是可靠性领域研究人员的兴趣之一。文献中已有的软件可靠性模型的选择方法和工具因为使用了受限的模型选择标准而得不到广泛的应用。该文根据软件开发生命周期(SDLC)的阶段对可靠性模型进行了分类,对可靠性模型的选择提出一系列新的标准,在此基础上提出了一种新的模型选择算法并对其进行举例说明。
关键词:软件可靠性模型;模型分类;模型选择标准;模型选择方法 中图分类号:TP312文献标识码:A文章编号:1009-3044(2008)29-0374-03 SRMS Algorithm for Software Reliability Model Selection DING Xiao-guang, ZHANG Gui-yong
(College of Optoelectronic Engineering,Nanjing University of Posts & Telecommunications,Nanjing 210003,China)
Abstract: Software Reliability Models are often used in software reliability estimation. Selection of Software Reliability Models for particular case has been the interest for the researchers in the field of reliability.Tools and techniques in the literature can not be broadly used due to the limited number of model selection criteria they adopt.In the paper, we have classified software reliability models by following Software Development Life Cycle(SDLC) phase, we’ve proposed a number of criteria for the selection of software reliability model, and in the end a new algorithm based on these criteria is provided .
Key words: soft reliability model; model classification; model selection criteria; model selection technique 1 引言
软件可靠性模型的定义为:在特定环境下,特定时间内,软件操作不发生失效的概率。对其有狭义和广义的不同理解,主要包括以下几个度量:软件可靠度,软件失效强度和软件平均失效时间MTTF(Mean Time To Failure)[1-2]。可靠性模型是对软件可靠性进行预测,控制和评估的一种有力的工具。软件可靠性模型的工作起始于上世纪70年代,自从1972年研发人员
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