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1 results

  • Measures of ageing tendency

  • Part of
  • Magdalena Szymkowiak
  • Journal:
    Journal of Applied Probability / Volume 56 / Issue 2 / June 2019
    Published online by Cambridge University Press:
    30 July 2019, pp. 358-383
    Print publication:
    June 2019

  • A family of generalized ageing intensity functions of univariate absolutely continuous lifetime random variables is introduced and studied. They allow the analysis and measurement of the ageing tendency from various points of view. Some of these generalized ageing intensities characterize families of distributions dependent on a single parameter, while others determine distributions uniquely. In particular, it is shown that the elasticity functions of various transformations of distributions that appear in lifetime analysis and reliability theory uniquely characterize the parent distribution. Moreover, the recognition of the shape of a properly chosen generalized ageing intensity estimate admits a simple identification of the data lifetime distribution.