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arXiv 2004.01563stat.ME
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二元抽样下极值分位数估计的序贯设计

A sequential design for extreme quantiles estimation under binary sampling

Michel Broniatowski, Emilie Miranda

摘要:

我们提出了一个序贯设计方法,旨在估计一个极端的分位数的基础上的一个样本的二分数据对应的峰值超过一个给定的阈值。本研究的动机是在材料可靠性的工业挑战,并包括在估计失败分位数的试验,其结果减少到指标的样本是否已失败,在测试的应力水平。提出的解决方案是一个顺序设计,利用分裂的方法,分解成产品的条件事件的高阶概率的目标概率水平。该方法包括逐步瞄准分布的尾部和在截尾分布下进行抽样。该模型是GEV或威布尔,其参数的序贯估计涉及到一个改进的极大似然程序的二进制数据,由于大的不确定性与这样一个有限的信息。

英文摘要:

We propose a sequential design method aiming at the estimation of an extreme quantile based on a sample of dichotomic data corresponding to peaks over a given threshold. This study is motivated by an industrial challenge in material reliability and consists in estimating a failure quantile from trials whose outcomes are reduced to indicators of whether the specimen have failed at the tested stress levels. The solution proposed is a sequential design making use of a splitting approach, decomposing the target probability level into a product of probabilities of conditional events of higher order. The method consists in gradually targeting the tail of the distribution and sampling under truncated distributions. The model is GEV or Weibull, and sequential estimation of its parameters involves an improved maximum likelihood procedure for binary data, due to the large uncertainty associated with such a restricted information.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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