A unified approach for covariance matrix estimation under Stein loss

Autor: Haddouche, Anis M., Lu, Wei
Jazyk: English<br />French
Rok vydání: 2022
Předmět:
Zdroj: Comptes Rendus. Mathématique, Vol 360, Iss G10, Pp 1093-1098 (2022)
Druh dokumentu: article
ISSN: 1778-3569
DOI: 10.5802/crmath.356
Popis: In this paper, we address the problem of estimating a covariance matrix of a multivariate Gaussian distribution, from a decision theoretic point of view, relative to a Stein type loss function. We investigate the case where the covariance matrix is invertible and the case when it is non–invertible in a unified approach.
Databáze: Directory of Open Access Journals