arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.4329math.STstat.TH
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测量误差模型中的变量选择

Variable selection in measurement error models

Yanyuan Ma, Runze Li

摘要:

测量误差数据或变量误差数据已在许多研究中收集。由于缺乏不可观测协变量的分布信息,一般功能测量误差模型通常无法使用自然准则函数。通常,参数估计是通过求解估计方程。此外,这种估计方程的构造通常需要求解积分方程,因此与普通回归模型相比,计算量往往要大得多。由于这些困难,传统的最佳子集变量选择程序是不适用的,在测量误差模型的背景下,变量选择仍然是一个未解决的问题。在本文中,我们开发了一个框架,通过惩罚估计方程的测量误差模型中的变量选择。本文首先提出了一般参数测量误差模型和一般半参数测量误差模型的一类选择过程,并研究了所提出的过程的渐近性质。然后,在一定的正则性条件下,并与适当选择的正则化参数,我们证明了所提出的程序执行以及一个预言的过程。我们通过蒙特卡罗模拟研究评估有限样本性能,并通过一个熟悉的数据集的实证分析说明所提出的方法。

英文摘要:

Measurement error data or errors-in-variable data have been collected in many studies. Natural criterion functions are often unavailable for general functional measurement error models due to the lack of information on the distribution of the unobservable covariates. Typically, the parameter estimation is via solving estimating equations. In addition, the construction of such estimating equations routinely requires solving integral equations, hence the computation is often much more intensive compared with ordinary regression models. Because of these difficulties, traditional best subset variable selection procedures are not applicable, and in the measurement error model context, variable selection remains an unsolved issue. In this paper, we develop a framework for variable selection in measurement error models via penalized estimating equations. We first propose a class of selection procedures for general parametric measurement error models and for general semi-parametric measurement error models, and study the asymptotic properties of the proposed procedures. Then, under certain regularity conditions and with a properly chosen regularization parameter, we demonstrate that the proposed procedure performs as well as an oracle procedure. We assess the finite sample performance via Monte Carlo simulation studies and illustrate the proposed methodology through the empirical analysis of a familiar data set.

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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