Shrinkage estimation with a matrix loss function
Shrinkage estimation with a matrix loss function
复制标题
使用矩阵损失函数进行收缩估计
DOI:
10.1214/12-ejs748
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
W. Strawderman
中科院分区:
文献类型:
--
作者:
R. Abu;J. Kent;W. Strawderman
Consider estimating the n by p matrix of means of an n by p matrix of independent normally distributed observations with constant variance, where the performance of an estimator is judged using a p by p matrix quadratic error loss function. A matrix version of the James-Stein estimator is proposed, depending on a tuning constant. It is shown to dominate the usual maximum likelihood estimator for some choices of of the tuning constant when n is greater than or equal to 3. This result also extends to other shrinkage estimators and settings.
DOI:
--
发表时间:
2009
期刊:
Journal of Multivariate Analysis 100
影响因子:
--
作者:
Tsukuma;H.
通讯作者:
H.