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Software Availability Based on Reliability Growth Models

Hiroshi OHTERA, Shigeru YAMADA, Hiroyuki NARIHISA

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Summary :

Software development managers and users have been interested in software availability for the software operational phase. It is of great importance to assess software reliability and performance during the operation phase. Therefore, we discuss software availability measurement based on software reliability growth models which describe behavior of software errors detected during the testing and operation phase. These models are formulated by nonhomogeneous Poisson processes (NHPP). The software availability index is defined as the possible system utilization factor which means the percentage of time that the software system will be available for operation. We show numerical examples on software availability measurement for actual software error data.

Publication
IEICE TRANSACTIONS on transactions Vol.E73-E No.8 pp.1264-1269
Publication Date
1990/08/25
Publicized
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Type of Manuscript
Special Section PAPER (Special Issue on Fault-Tolerant Systems)
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