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요약정보
基于Copula函数模型的构成软件可靠性预测方法 / Component Software Reliability Prediction Method Based on Copula Function Model
Resource Type
Academic Journal
Authors
房怀媛
;
李长银
;
FANG Huai-yuan
;
LI Chang-yin
Source
计算机仿真 / Computer Simulation
. 39(5):352-365
Subject
构件软件
可靠性预测
贝叶斯方法
故障树
Language
Chinese
ISSN
1006-9348
Online Access
Find it @ DONGA
초록
利用传统方法预测构件软件可靠性时,没有构建缺陷模型进行缺陷分析,存在构件软件可靠性预测时间延迟高、CPU开销大和平均路径覆盖率差的问题.于是提出基于Copula函数模型的构件软件可靠性预测方法,建立软件缺陷模型和故障树,对软件缺陷进行分析.基于二维焦元建立一个普通BPA证据变量,利用贝叶斯方法解决证据变量中样本量较少的问题,并从中取得Copula优质函数后构建联合BPA.通过构建的联合BPA和取得的最优Copula函数实现构件软件可靠性预测.实验结果表明,通过对比预测时间延迟、CPU开销和平均路径覆盖率,验证了所提构件软件可靠性预测方法的实用性和可行性较强.
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