In this paper, through the model of parameter adjustment with constraints among the parameters, a further proof on the equivalence of the formulas of variance-covariance components is gives.
通过附有条件的间接平差模型进一步证明各类方差-协方差分量估计公式之间的等价性。
The unknown parameters of this model are divided into two categories: one is the fixed effects, and the other is the variance components.
这种模型的未知参数分两类，一类是固定效应，一类是方差分量。
In this paper, the covariance matrix of random effect in linear mixed model is extended to positive matrix. We construct the estimation of variance components based on the idea of ANOVA estimation.
将线性混合模型中随机效应的协方差阵推广为正定阵，运用方差分析估计的方法给出了方差分量的估计。
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