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Covariance matrix estimation under data-based loss
Statistics & Probability Letters ( IF 0.8 ) Pub Date : 2021-05-26 , DOI: 10.1016/j.spl.2021.109160
Dominique Fourdrinier , Anis M. Haddouche , Fatiha Mezoued

We consider here the problem of estimating the p×p scale matrix Σ of a multivariate linear regression model when the distribution of the observed matrix belongs to a large class of elliptically symmetric distributions. Any estimator Σˆ of Σ is assessed through the data-based loss tr(S+Σ(Σ1ΣˆIp)2)  where S is the sample covariance matrix and S+ is its Moore–Penrose inverse.



中文翻译:

基于数据的损失下的协方差矩阵估计

我们在这里考虑估计 × 尺度矩阵 Σ当观测矩阵的分布属于一大类椭圆对称分布时,多元线性回归模型的 任何估算器Σ^Σ 通过基于数据的损失评估 tr(+Σ(Σ-1Σ^-一世)2)  在哪里 是样本协方差矩阵和 + 是它的摩尔-彭罗斯逆。

更新日期:2021-06-11
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