基于工作效率度量的软件可靠性增长模型

摘要

为准确描述工作效率对软件可靠性建模的影响,在非齐次泊松过程类软件可靠性增长模型的基础上,提出一种考虑软件测试人员工作效率增长的模型.对软件测试人员的工作效率增长进行建模,定义有效工作时间,结合传统的Goel-Okumoto模型,提出基于工作效率度量的软件可靠性增长模型.在ohba,wood以及okumoto这3组真实软件缺陷数据集的验证结果表明,改进模型较G-O模型、Delayed S-shaped模型、Weibull-TEF模型和变型S型-TEF模型表现更优,验证了该方法在软件可靠性评估和预测能力上的有效性.%To accurately describe the effects of work efficiency on software reliability modeling, a SRGM with software tester working efficiency improvement by measuring the progress of which during testing process, was proposed based on non-homogeneous Poisson process (NHPP).By modeling working efficiency of software testers and defining effective working time,a software reliability growth model considering working efficiency measurement was proposed based on the traditional Goel-Okumoto mode.Results of experimental study performed on ohba, wood and okumoto data sets show that the proposed method outperforms G-O, Delayed S-shaped, Weibull-TEF and modified S-TEF, which means it can assess and predict software reliability more accurately.