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arXiv 0802.2676math.STstat.TH
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多维回归模型的估计与检验

Estimation and Test for Multidimensional Regression Models

Joseph Rynkiewicz

摘要:

这项工作涉及多维回归的估计和渐近行为的测试参与选择模型。这种模型的主要问题是我们需要知道噪声的协方差阵以获得最佳估计。本文证明了,如果我们选择极小化经验误差协方差阵的行列式的对数,那么我们得到一个渐近最优估计。此外,在适当的假设下,我们表明,这个费用函数导致一个非常简单的渐近法测试的参数的数量的可识别和定期回归模型。数值实验证实了理论结果。

英文摘要:

This work is concerned with the estimation of multidimensional regression and the asymptotic behaviour of the test involved in selecting models. The main problem with such models is that we need to know the covariance matrix of the noise to get an optimal estimator. We show in this paper that if we choose to minimise the logarithm of the determinant of the empirical error covariance matrix, then we get an asymptotically optimal estimator. Moreover, under suitable assumptions, we show that this cost function leads to a very simple asymptotic law for testing the number of parameters of an identifiable and regular regression model. Numerical experiments confirm the theoretical results.

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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