This paper deals with the variance property of combining ridge and principal components estimate in the class of reduced-dimension estimates.
讨论岭型主成分估计在一类降维估计中的方差性质，证明了它的方差和在这类降维估计中最小。
We compare the spectral decomposition estimate by the analysis of variance estimate in the linear mixed model with two variance components.
对含两个方差分量的一般线性混合模型，我们给出其方差分量的改进估计，主要对组合谱分解估计进行改进。
We compare the spectral decomposition estimate by the analysis of variance estimate in the linear mixed model with two variance components.
对含两个方差分量的一般线性混合模型，我们给出其方差分量的改进估计，主要对组合谱分解估计进行改进。
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