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A Bivariate Software Reliability Model with Change-Point and Its Applications

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Author(s): Shinji Inoue | Shigeru Yamada

Journal: American Journal of Operations Research
ISSN 2160-8830

Volume: 01;
Issue: 01;
Start page: 1;
Date: 2011;
Original page

Keywords: Software Reliability | Software Reliability Growth Factor | Change-Point | Bivariate Software Reliability Growth Model | Optimal Testing-Effort Expending Problem

ABSTRACT
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.
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