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arXiv 2307.03429math.STstat.TH
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MLE-等变性、数据变换与不变拟合优度检验

Mle-equivariance, data transformations and invariant tests of fit

Muneya Matsui, Simos Meintanis

AI总结:

本文提出保持分布族不变的数据变换,证明最大似然估计量具有相应等变性,从而将拟合优度检验简化为对固定参数标准分布的检验,并以Weibull分布为例进行Monte Carlo模拟和真实数据验证。

摘要:

我们定义了使某些分布族保持不变、同时以特定方式作用于这些分布参数的数据变换。研究表明,在此类变换下,最大似然估计量的行为与所估计的参数完全一致。因此,基于通过该不变数据变换的逆所获得的标准化数据的拟合优度检验,可以归结为对具有固定参数值的该分布族标准成员进行检验的情形。在呈现我们的结果时,我们还对等变估计量这一主题进行了选择性综述,并始终与不变拟合优度检验相联系。针对检验Weibull分布的特殊情形,我们给出了一项小规模Monte Carlo研究,并辅以真实数据示例。

英文摘要:

We define data transformations that leave certain classes of distributions invariant, while acting in a specific manner upon the parameters of the said distributions. It is shown that under such transformations the maximum likelihood estimators behave in exactly the same way as the parameters being estimated. As a consequence goodness--of--fit tests based on standardized data obtained through the inverse of this invariant data--transformation reduce to the case of testing a standard member of the family with fixed parameter values. While presenting our results, we also provide a selective review of the subject of equivariant estimators always in connection to invariant goodness--of--fit tests. A small Monte Carlo study is presented for the special case of testing for the Weibull distribution, along with real--data illustrations.

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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