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定义在有界区间上的一种新的重尾分布:对数单位斜线分布及其应用。

A new heavy-tailed distribution defined on the bounded interval: the logit slash distribution and its application.

作者信息

Korkmaz Mustafa Ç

机构信息

Department of Measurement and Evaluation, Artvin Çoruh University, Artvin, Turkey.

出版信息

J Appl Stat. 2019 Dec 18;47(12):2097-2119. doi: 10.1080/02664763.2019.1704701. eCollection 2020.

Abstract

This paper proposes a new heavy-tailed and alternative slash type distribution on a bounded interval via a relation of a slash random variable with respect to the standard logistic function to model the real data set with skewed and high kurtosis which includes the outlier observation. Some basic statistical properties of the newly defined distribution are studied. We derive the maximum likelihood, least-square, and weighted least-square estimations of its parameters. We assess the performance of the estimators of these estimation methods by the simulation study. Moreover, an application to real data demonstrates that the proposed distribution can provide a better fit than well-known bounded distributions in the literature when the skewed data set with high kurtosis contains the outlier observations.

摘要

本文通过斜杠随机变量与标准逻辑函数的关系,在有界区间上提出了一种新的重尾交替斜杠型分布,用于对包含异常值观测的具有偏态和高峰度的真实数据集进行建模。研究了新定义分布的一些基本统计性质。我们推导了其参数的最大似然估计、最小二乘估计和加权最小二乘估计。通过模拟研究评估了这些估计方法的估计量的性能。此外,对实际数据的应用表明,当具有高峰度的偏态数据集包含异常值观测时,所提出的分布比文献中著名的有界分布能提供更好的拟合。

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