... 条件相对极值 conditional relative extremum 条件协方差矩阵 conditional covariance matrix 条件预期值 conditional expected value ...
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研究了任意秩多元线性模型中最优线性无偏预测的稳健性，即对任一线性可预测变量，得到了其关于协方差矩阵具有稳健性的充要条件。
The conditional optimal prediction of the conditional predictable variable in the multivariate linear model with arbitrary rank and linear equality constrains was investigated.
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