Journal of Korea Society of Digital Industry and Information Management (디지털산업정보학회논문지)

Korea Society of Digital Industry and Information Management (디지털산업정보학회)
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A Study on Optimal Release Time for Software Systems based on Mixture Weibull NHPP Model

혼합 와이블 NHPP 모형에 근거한 소프트웨어 최적방출시기에 관한 연구

  • 이상식 (송호대학 보건의료전자과) ;
  • 김희철 (남서울대학교 산업경영공학과)
  • Received : 2010.03.25
  • Accepted : 2010.04.23
  • Published : 2010.06.30
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Abstract

Decision problem called an optimal release policies, after testing a software system in development phase and transfer it to the user, is studied. The applied model of release time exploited infinite non-homogeneous Poisson process. This infinite non-homogeneous Poisson process is a model which reflects the possibility of introducing new faults when correcting or modifying the software. The failure life-cycle distribution used mixture which has various intensity, if the system is complicated. Thus, software release policies which minimize a total average software cost of development and maintenance under the constraint of satisfying a software reliability requirement becomes an optimal release policies. In a numerical example, after trend test applied and estimated the parameters using maximum likelihood estimation of inter-failure time data, estimated software optimal release time.

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References

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