Incorporating the Testing-Effort Function into the Inflected S-Shaped NHPP Software Reliability Model

Abstract:

Considering testing effort and imperfect debugging in reliability modeling process may further improve the fitting and prediction results of software reliability growth models (SRGMs). For describing the S-shaped varying trend of the testing-effort increasing rate more accurately, this paper first proposes a inflected S-shaped testing effort function (IS-TEF). Then this new TEF is incorporated into the inflected S-shaped NHPP SRGMs for obtaining a new NHPP SRGMs which consider S-shaped TEF (IS-TEFM-IS). Finally the IS-TEFM-IS and several comparison NHPP SRGMs are applied into two real failure data-sets respectively for investigating the fitting power of the IS-TEFM-IS. The experimental results show that the inflected S-shaped NHPP SRGM considering IS-TEF yields the best accurate estimation results than the other comparison SRGMs.

• Periodical: Applied Mechanics and Materials (Volumes 241-244)
• Pages: 356-359
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.241-244.356
• Online since: December 2012
• Authors: Qian Zhao*, Xian Feng Yu, Cheng Wei Zhang
• Keywords: Inflected S-Shaped, Reliability Modeling, Software Reliability Growth Model, Testing Effort

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