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arXiv 2402.11219math.STstat.MEstat.TH
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多响应变量回归模型的估计器

Estimators for multivariate allometric regression model

Faculty of Mathematics, Kyushu University(九州大学数学学院);Faculty of Science and Technology, Keio University(庆应义塾大学理工学部)

Koji Tsukuda, Shun Matsuura

AI总结:

本文提出了一种多变量所有质回归模型中第一主特征向量的估计方法,并讨论了其一致性条件和性能评估。

摘要:

在具有多个响应变量和多个解释变量的回归模型中,如果响应变量在不同解释变量值下的均值向量差异始终指向响应变量协方差矩阵的第一主特征向量方向,则称为多变量所有质回归模型。本文研究了多变量所有质回归模型中第一主特征向量的估计问题。基于回归平方和矩阵与残差平方和矩阵的加权平方和矩阵,提出了一类包含传统估计器的估计器。我们建立了该类估计器的均方误差上界,并推导了使上界最小的权重值。在弱可识别情况下讨论了估计器的一致性条件,其中协方差矩阵的最大和第二大的特征值差渐近衰减,并在

英文摘要:

In a regression model with multiple response variables and multiple explanatory variables, if the difference of the mean vectors of the response variables for different values of explanatory variables is always in the direction of the first principal eigenvector of the covariance matrix of the response variables, then it is called a multivariate allometric regression model. This paper studies the estimation of the first principal eigenvector in the multivariate allometric regression model. A class of estimators that includes conventional estimators is proposed based on weighted sum-of-squares matrices of regression sum-of-squares matrix and residual sum-of-squares matrix. We establish an upper bound of the mean squared error of the estimators contained in this class, and the weight value minimizing the upper bound is derived. Sufficient conditions for the consistency of the estimators are discussed in weak identifiability regimes under which the difference of the largest and second largest eigenvalues of the covariance matrix decays asymptotically and in ``large $p$, large $n$" regimes, where $p$ is the number of response variables and $n$ is the sample size. Several numerical results are also presented.

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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