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软件可靠性专家系统(SRES)中经验模型的奇异性问题与参数估计方法 被引量:5
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作者 徐仁佐 张健 +1 位作者 刘莲君 何平 《计算机学报》 EI CSCD 北大核心 1998年第2期145-153,共9页
本文作者以“一切让数据说明问题”为原则,采用人工智能技术,开发出软件可靠性专家系统SRES(SoftwareReliabilityExpertSystem),根据统一的标准,通过对一组软件可靠性模型SRM(SoftwareReliabilityModels)的拟合结果,经过推理... 本文作者以“一切让数据说明问题”为原则,采用人工智能技术,开发出软件可靠性专家系统SRES(SoftwareReliabilityExpertSystem),根据统一的标准,通过对一组软件可靠性模型SRM(SoftwareReliabilityModels)的拟合结果,经过推理,得出一个“最适”模型,推荐给用户,作为估测该软件系统的一个“标准模型”,同时为软件开发方和使用方所接受,以解决软件可靠性模型应用中的不一致性难题.在开发SRES的过程中,我们选用的经验模型有三个经分析具有奇异性,增大了对它们的参数进行估计的难度.针对这些,本文研究并报告软件可靠性专家系统中经验模型的奇异性问题与参数估计方法. 展开更多
关键词 软件可靠性 专家系统 奇异性 参数估计
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Singularity of Some Software Reliability Models and Parameter Estimation Method 被引量:1
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作者 XU Ren-zuo ZHOU Rui YANG Xiao-qing (State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072, China) 《Wuhan University Journal of Natural Sciences》 EI CAS 2000年第1期35-40,共6页
According to the principle, “The failure data is the basis of software reliability analysis”, we built a software reliability expert system (SRES) by adopting the artificial intelligence technology. By reasoning out... According to the principle, “The failure data is the basis of software reliability analysis”, we built a software reliability expert system (SRES) by adopting the artificial intelligence technology. By reasoning out the conclusion from the fitting results of failure data of a software project, the SRES can recommend users “the most suitable model” as a software reliability measurement model. We believe that the SRES can overcome the inconsistency in applications of software reliability models well. We report investigation results of singularity and parameter estimation methods of experimental models in SRES. 展开更多
关键词 software reliability measurement models software reliability expert system SINGULARITY parameter estimation method path following method maximum likelihood ML-fitting algorithm
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Singularity of Software Reliability Models LVLM and LVQM
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作者 XU Ren zuo ZHOU Rui YANG Xiao qing 《Wuhan University Journal of Natural Sciences》 EI CAS 2000年第2期150-154,共5页
According to the principle, “The failure data is the basis of software reliabilityanalysis”, we built a software reliability expert system (SRES) by adopting the artificialtechnology. By reasoning out the conclusion... According to the principle, “The failure data is the basis of software reliabilityanalysis”, we built a software reliability expert system (SRES) by adopting the artificialtechnology. By reasoning out the conclusion from the fitting results of failure data of asoftware project, the SRES can recommend users “the most suitable model” as a softwarereliability measurement model. We believe that the SRES can overcome the inconsistency inapplications of software reliability models well. We report investigation results of singularity and parameter estimation methods of models, LVLM and LVQM. 展开更多
关键词 software reliability measurement models software reliability expert system SINGULARITY parameter estimation method LVLM LVQM
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VLMC控制流软件可靠性度量方法
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作者 赵瑞曼 潘冠华 方建勇 《指挥控制与仿真》 2014年第5期117-123,共7页
针对现有软件可靠性模型普遍不适用于实际软件的问题,分析了软件内部模块间控制转移机理,通过分离入口模块,提取一阶控制转移概率矩阵;弱化内部模块与出口模块间差异,重构二阶以上转移概率矩阵,在改进Cheung模型的基础上建立一个更符合... 针对现有软件可靠性模型普遍不适用于实际软件的问题,分析了软件内部模块间控制转移机理,通过分离入口模块,提取一阶控制转移概率矩阵;弱化内部模块与出口模块间差异,重构二阶以上转移概率矩阵,在改进Cheung模型的基础上建立一个更符合软件实际的可靠性度量模型。针对变阶依赖(VLMC)控制转移导致的可靠性度量难问题,通过对导致复杂依赖的多入多出模块进行节点扩展,将VLMC控制流转化为Markov链,利用所建立的软件可靠性模型对VLMC控制流软件进行可靠性度量。研究利用演绎推理对所建立模型进行了正确性形式化证明。最后给出了方法的实例验证。 展开更多
关键词 控制转移 MARKOV 变阶Markov链(VLMC) 软件可靠性 度量模型
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