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http://dx.doi.org/10.21219/jitam.2018.25.4.115

A Study on the Property Analysis of Software Reliability Model with Shape Parameter Change of Finite Fault NHPP Erlang Distribution  

Min, Kyung Il (Industry Academic Cooperation Foundation, Namseoul University)
Publication Information
Journal of Information Technology Applications and Management / v.25, no.4, 2018 , pp. 115-122 More about this Journal
Abstract
Software reliability has the greatest impact on computer system reliability and software quality. For this software reliability analysis, In this study, we compare and analyze the trends of the properties affecting the reliability according to the shape parameters of Erlang distribution based on the finite fault NHPP. Software failure time data were used to analyze software failure phenomena, the maximum likelihood estimation method was used for parameter estimation. As a result, it can be seen that the intensity function is effective because it shows a tendency to decrease with time when the shape parameters a = 1 and a = 3. However, the pattern of the mean value function showed an underestimation pattern for the true values when the shape parameters a = 1 and a = 2, but it was found to be more efficient when a = 3 because the error width from the true value was small. Also, in the reliability evaluation of the future mission time, the stable and high trend was shown when the shape parameters a = 1 and a = 3, but on the contrary, when a = 2, the reliability decreased with the failure time. Through this study, the property of finite fault NHPP Erlang model according to the change of shape parameter without existing research case was newly analyzed, and new research information that software developers can use as basic guideline was presented.
Keywords
Infinite Failure; NHPP; Shape Parameter; Software Failure Reliability Model; Erlang Distribution Property Analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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