Minimax estimation of location parameters for certain spherically symmetric distributions
Minimax estimation of location parameters for certain spherically symmetric distributions
复制标题
某些球对称分布的位置参数的极小极大估计
DOI:
10.1016/0047-259x(74)90032-3
复制
发表时间:
1974
影响因子:
1.6
通讯作者:
W. Strawderman
中科院分区:
文献类型:
--
作者:
W. Strawderman
Abstract Families of minimax estimators are found for the location parameters of a p-variate distribution of the form∫ 1 (2πσ 2) e−(1 2σ 2)‖ X− θ‖ 2 dG (σ), where G (·) is a known cdf on (0,∞), p≥ 3 and the loss is sum of squared errors. The estimators are of the form (1− ar (X′ X) E 0 (1 X′ X) X′ X) X where 0≤ a≤ 2, r (X′ X) is nondecreasing, and r (X′ X) X′ X is nonincreasing. Generalized Bayes minimax estimators are found for certain G (·)'s.