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A modified Weibull distribution

delete2003-03-01
delete404
PRE
AI
C
C. D. Lai *
M
Min Xie
D
D. N. Prabhakar Murthy
DOI:10.1109/TR.2002.805788delete
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Abstract

Abstract

En 中文
A new lifetime distribution capable of modeling a bathtub-shaped hazard-rate function is proposed. The proposed model is derived as a limiting case of the Beta Integrated Model and has both the Weibull distribution and Type I extreme value distribution as special cases. The model can be considered as another useful 3-parameter generalization of the Weibull distribution. An advantage of the model is that the model parameters can be estimated easily based on a Weibull probability paper (WPP) plot that serves as a tool for model identification. Model characterization based on the WPP plot is studied. A numerical example is provided and comparison with another Weibull extension, the exponentiated Weibull, is also discussed. The proposed model compares well with other competing models to fit data that exhibits a bathtub-shaped hazard-rate function.
Keywords:
bathtub shape
hazard-rate function
modeling data
parameter estimation
Weibull distribution
Weibull probability plot

Journal

IEEE Transactions on Reliability cover
IEEE Transactions on Reliability
IF:
5.7
Papers:
2.8K
Citations:
8.5K

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No organization information available
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