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Criterion for an approximation of variance components in regression models. (English) Zbl 0852.62063
Summary: In a linear model with variance components the locally best linear unbiased estimator of the mean value parameters depends on the values of the variance components. The problem is to find a region around the given values of the variance components in which the best linear unbiased estimator does not change essentially.

62J05 Linear regression; mixed models
62H12 Estimation in multivariate analysis
62J10 Analysis of variance and covariance (ANOVA)
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