Author(s)

Shinji Inoue, Shigeru Yamada

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Testing-time when a change of a stochastic characteristic of the software failure-occurrence time or software failure-occurrence time-interval is observed is called change-point. It is said that effect of the change-point on the software reliability growth process influences on accuracy for software reliability assessment based on a software reliability growth model (SRGM). We propose an SRGM with the effect of the change-point based on a bivariate SRGM, in which the software reliability growth process is assumed to depend on the testing-time and testing-effort factors simultaneously, for accurate software reliability assessment. And we discuss an optimal software release problem for deriving optimal testing-effort expenditures based on our model. Further, we show numerical examples of software reliability assessment based on our bivariate SRGM and estimation of optimal testing-effort expenditures by using actual data.

Software Reliability, Software Reliability Growth Factor, Change-Point, Bivariate Software Reliability Growth Model, Optimal Testing-Effort Expending Problem

S. Inoue and S. Yamada, "A Bivariate Software Reliability Model with Change-Point and Its Applications," American Journal of Operations Research, Vol. 1 No. 1, 2011, pp. 1-7. doi: 10.4236/ajor.2011.11001.