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A new class of distribution functions for lifetime data

机译:生命周期数据的新型分布函数

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摘要

This paper deals with the issue of building a parametric model from the empirical and/or qualitative information about the hazard rate. We propose a new class of models for survival data analysis. This class is characterized by a distribution function which includes, in its expression, a function that defines the sign of the first derivative of a monotonic transformation of the hazard rate. We show that certain parametric models used in survival analysis belong to the proposed class. Finally, by using the proposed method, we build two new distributions which allow us to achieve a highly flexible hazard rate. The first one is based on an m-degree polynomial and allows us to get BT, IFR and UBT-BT hazard rates, while the second, based on trigonometric functions, enables us to obtain monotonically increasing or decreasing hazard rates or hazard rates with a non-monotonic behavior. The usefulness of the new method is illustrated through two applications to real data.
机译:本文讨论了从有关危险率的经验和/或定性信息建立参数模型的问题。我们提出了一种用于生存数据分析的新模型。此类的特征在于分布函数,该分布函数在其表达式中包括定义危险率单调变换的一阶导数的符号的函数。我们表明,在生存分析中使用的某些参数模型属于建议的类别。最后,通过使用所提出的方法,我们建立了两个新的分布,这使我们能够实现高度灵活的危害率。第一个基于m次多项式,使我们能够获得BT,IFR和UBT-BT危险率,而第二个基于三角函数,使我们能够获得单调递增或递减的危险率或具有非单调行为。通过对真实数据的两个应用说明了该新方法的实用性。

著录项

  • 来源
    《Reliability Engineering & System Safety》 |2014年第9期|36-45|共10页
  • 作者单位

    Department of Economics, Statistics and Finance, University of Calabria, Via Pietro Bucci, Cubo 0C, 87036 Arcavacata di Rende (CS), Italy;

    Department of Economics, Statistics and Finance, University of Calabria, Via Pietro Bucci, Cubo 0C, 87036 Arcavacata di Rende (CS), Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hazard rate; Differential equation; Flexibility; Log-concavity;

    机译:危险率;微分方程灵活性;原木凹度;

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