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New survival distributions that quantify the gain from eliminating flawed components

机译:新的生存分布可量化消除有缺陷组件的收益

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摘要

A general method for deriving new survival distributions from old is presented. This yields a class of useful mixture distributions. Fitting such distributions to failure-time data allows estimation of the improvement in reliability that could be gained from eliminating 'frail' components. One model parameter is the proportional increase of expected survival time that could be achieved. Some 2 and 3 parameter distributions in this class are described, which are extensions of the Weibull, exponential, gamma and lognormal distributions. The methodology is illustrated by fitting some well-travelled datasets.
机译:提出了一种从旧的推导新的生存分布的一般方法。这产生了一类有用的混合物分布。将这种分布拟合到故障时间数据可以估算出可靠性的提高,而这种提高可以通过消除“脆弱”的组件来获得。一个模型参数是可以实现的预期生存时间的比例增加。描述了此类中的2和3个参数分布,它们是Weibull,指数,γ和对数正态分布的扩展。通过拟合一些周密旅行的数据集来说明该方法。

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