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    A modified Weibull distribution

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    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.
    Citation
    Lai, C. D.; Xie, M.; Murthy, D. N. P. (2003). A modified Weibull distribution. IEEE Transactions on Reliability. Vol. 52, No. 1, pp. 33-37.
    Date
    2003-03
    Author
    Lai, C. D.
    Xie, M.
    Murthy, D. N. P.
    Publisher
    Institute of Electrical and Electronics Engineers
    URI
    http://hdl.handle.net/10179/9613
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    DSpace software copyright © Duraspace
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