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arXiv 1004.4883math.STstat.TH
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多变量线性模型的MM型估计量估计

Estimates of MM type for the multivariate linear model

Nadia L. Kudraszow, Ricardo A. Maronna

AI总结:

本文提出了一种基于MM估计方法的多变量线性模型稳健估计方法,通过迭代算法实现了回归系数和误差协方差矩阵的同时估计,并在高斯误差下具有高破坏点和高渐近效率。

摘要:

我们提出了一类用于多变量线性模型的稳健估计方法。基于Yohai (1987)提出的MM估计方法,我们同时估计回归系数和误差的协方差矩阵。这些估计量在高斯误差下具有高破坏点和高渐近效率。我们在假设误差服从椭圆分布的情况下证明了其一致性和渐近正态性。我们描述了用于计算这些估计量的迭代算法。通过模拟和实际数据,我们展示了所提出估计量相对于其竞争对手的优势。

英文摘要:

We propose a class of robust estimates for multivariate linear models. Based on the approach of MM estimation (Yohai 1987), we estimate the regression coefficients and the covariance matrix of the errors simultaneously. These estimates have both high breakdown point and high asymptotic efficiency under Gaussian errors. We prove consistency and asymptotic normality assuming errors with an elliptical distribution. We describe an iterative algorithm for the numerical calculation of these estimates. The advantages of the proposed estimates over their competitors are demonstrated through both simulated and real data.

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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