Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (23): 67-69.DOI: 10.3778/j.issn.1002-8331.2009.23.019

• 研发、设计、测试 • Previous Articles     Next Articles

Application of Weibull distribution model in estimating the best time for software delivery

LI Jun1,DAI Zu-hua2   

  1. 1.School of Management,Xi’an Jiaotong University,Xi’an 710049,China
    2.College of Mathematics and Information,Northwest Normal University,Lanzhou 730070,China
  • Received:2009-04-03 Revised:2009-05-04 Online:2009-08-11 Published:2009-08-11

Weibull分布在软件最优交付时间估算中的应用

李 钧1,代祖华2   

  1. 1.西安交通大学 管理学院,西安 710049
    2.西北师范大学 数信学院,兰州 730070

Abstract: The best software delivery time of a software product is highly determined by the software reliability estimation.Weibull distribution is an effective model for software reliability analysis,which well describes statistical characteristics of defect detection in software testing.Based on the analysis of the Weibull distribution characteristics,a Weibull distribution accumulative function fitting model is suggested,and the discontinuity problem of defect detection is resolved.Furthermore,by making use of the model,two kinds of formula to evaluate the best time for software delivery are given.Finally,an example is analyzed to prove the model’s effectiveness.

Key words: software testing, Weibull distribution, software reliability, best software delivery time

摘要: 软件最优交付时间在很大程度上取决于软件可靠性估算。Weibull分布较有效地描述了软件测试过程中错误发现的统计特征,是一种有效的软件可靠性分析模型。在分析Weibull分布的基础上,提出了Weibull分布的累计函数拟合模型,解决了错误发现的不连续问题,推导出两种利用Weibull累计函数模型进行软件最优交付时间的估算公式,并结合具体实例验证了模型的有效性。

关键词: 软件测试, Weibull分布, 软件可靠性, 软件最佳交付时间

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