基于组件的软件系统可靠性评估的不确定性研究

Assessing uncertainty in reliability of component based software systems

当前一些基于体系结构的软件可靠性模型,在操作剖面和组件可靠性中,不管这些模型是否准确,只要有相当多的不确定性存在,在计算软件可靠性时,就会存在较多的不确定性。若采用传统方法估算软件的可靠性,忽略了属于参数不确定性存在的差异,那么结果可能不准确。提出了一种新的基于体系结构的不确定性的分析方法,该方法适合大型复杂的基于组件的应用程序及整个软件生命周期。

Many architecture based software reliability models were proposed in the past. Regardless of the accuracy of these models, if a considerable uncertainty exists in the estimates of the operational profile and components reliabilities then a significant uncertainty exists in calculated software reliability. In this paper we propose a methodology for uncertainty analysis of architecture based software reliability models suitable for large complex component based applications and applicable throughout the software life cycle.