Equivariant estimators of the covariance matrix
Equivariant estimators of the covariance matrix
复制标题
协方差矩阵的等变估计量
DOI:
10.2307/3315567
复制
发表时间:
1990
影响因子:
0.6
通讯作者:
François Perron
中科院分区:
文献类型:
--
作者:
François Perron
Given a Wishart matrix S [S ∽ Wp(n, Σ)] and an independent multinomial vector X [X ∽ Np (μ, Σ)], equivariant estimators of Σ are proposed. These estimators dominate the best multiple of S and the Stein-type truncated estimators.