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arXiv 2109.07978stat.MEstat.APstat.OT
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均值与离差联合建模中的变量选择

On variable selection in joint modeling of mean and dispersion

Edmilson Rodrigues Pinto, Leandro Alves Pereira

摘要:

均值与离差联合建模(JMMD)为求解均值与离差模型提供了一种有效的方法,特别是在稳健设计试验问题中。然而,在JMMD的文献中,很少有作品致力于变量选择,这一主题仍然是一个挑战。在这篇文章中,我们提出了一个程序,选择JMMD变量的基础上,假设检验和模型的拟合质量。在选择过程的每次迭代中,使用用于检查拟合优度的标准作为用于选择将由假设检验评估的项的过滤器。在我们的变量选择程序中,考虑了三种类型的标准来检查模型拟合的质量。采用的标准是:扩展的赤池信息准则、修正的赤池信息准则和我们提出的JMMD的一种特殊准则--扩展的调整决定系数。仿真研究进行了验证我们的变量选择过程的效率。在所审议的所有情况下,拟议的程序证明是有效的,相当令人满意。将变量选择过程应用于工业实验的实例。

英文摘要:

The joint modeling of mean and dispersion (JMMD) provides an efficient method to obtain useful models for the mean and dispersion, especially in problems of robust design experiments. However, in the literature on JMMD there are few works dedicated to variable selection and this theme is still a challenge. In this article, we propose a procedure for selecting variables in JMMD, based on hypothesis testing and the quality of the model's fit. A criterion for checking the goodness of fit is used, in each iteration of the selection process, as a filter for choosing the terms that will be evaluated by a hypothesis test. Three types of criteria were considered for checking the quality of the model fit in our variable selection procedure. The criteria used were: the extended Akaike information criterion, the corrected Akaike information criterion and a specific criterion for the JMMD, proposed by us, a type of extended adjusted coefficient of determination. Simulation studies were carried out to verify the efficiency of our variable selection procedure. In all situations considered, the proposed procedure proved to be effective and quite satisfactory. The variable selection process was applied to a real example from an industrial experiment.

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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