基于多版本较准的软件可靠性评估  

Multi-version calibration method for software reliability assessment

作　　者：杨彬[1] 陈丽容[1] 

机构地区：[1]中国航天科工集团第二研究院706所,北京100854

出　　处：《计算机工程与设计》2007年第19期4597-4599,共3页Computer Engineering and Design

摘　　要：软件可靠性模型都要求测试时的操作剖面与实际运行时的操作剖面一致,但这往往很难达到,造成测试完成之后的可靠性预计与发布之后实际运行中达到的可靠性有较大差距。为了提高软件可靠性评估的准确性,提出了剖面差异性的概念,认为同一软件各个版本的测试操作剖面与实际操作剖面之间的差异性是相同的。在此前提下,提出了一个多版本校准方法,利用软件以前版本的剖面差异性来改进软件当前版本的可靠性评估。All software reliability models assume the field operational profile is the same as the testing operational profile. However, this is usually not true, so the reliability predicted after test differs from that actually achieved. Profile discrepancy （PD） is proposed, which indicates the difference between testing operational profile and field operational profile. It is assumed that PD is the same for software series, so multi-version calibration method is proposed, which uses PD of previous version to calibrate the reliability assessment of current version.

关 键 词：软件可靠性评估 测试剖面 运行剖面 剖面差异性 多版本校准 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]