一种加入单改变点的Schneidewind模型研究

Schneidewind 模型已经被广泛研究和应用到很多软件可靠性预测中去。很多软件可靠性增长模型都假设软件所有的失效有相同的查错率,并且在失效发生时,查错率也不发生变化。但实际中,查错率会依赖于多种因素,也会因为软件需求的变化、测试团队的变动而发生变化。本文提出通过几何图形的观测通过对 Schneidewind 模型加入单个改变点来改进模型,并通过实验证明此方法对可靠性精度的提高有一定作用。同时,本文也说明了此方法应用的优点及其局限性。

An Updated Schneidewind Model with Single Change-point

Schneidewind model has been used widely in softwere reliability prediction. Many software reliability growth models assume that all faults have equal probability of being detected during the software testing process and the rate remains constant over the intervals between faults occurrences. But in fact, the fault detection rate may depend on many factors, and may change with the software requirement and testing team. In this paper, we proposed an updated Schneidewind model with a single change-point by a geometrical method, and the experiment showed the method can improve the reliability precision to some degree. We also elaborated on its merits and limitations.