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Title: A modified Weibull distribution
Authors: Lai, C.D.
Xie, M. 
Murthy, D.N.P.
Keywords: Bathtub shape
Hazard-rate function
Modeling data
Parameter estimation
Weibull distribution
Weibull probability plot
Issue Date: Mar-2003
Citation: Lai, C.D., Xie, M., Murthy, D.N.P. (2003-03). A modified Weibull distribution. IEEE Transactions on Reliability 52 (1) : 33-37. ScholarBank@NUS Repository.
Abstract: 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.
Source Title: IEEE Transactions on Reliability
ISSN: 00189529
DOI: 10.1109/TR.2002.805788
Appears in Collections:Staff Publications

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