Journal
MATHEMATICS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/math11010182
Keywords
augmentation; BLUE; BLUP; Kronecker product; multivariate linear model; parameter matrix; rank; reduced model
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This paper provides a comprehensive matrix analysis of the equivalence problems in estimation and inference results between a true multivariate linear model and its misspecified form with an augmentation part. The study covers the matrix derivation of the best linear unbiased estimators and the establishment of necessary and sufficient conditions for the equivalence of different estimators under the model assumptions.
This paper provides a complete matrix analysis on equivalence problems of estimation and inference results under a true multivariate linear model Y = X theta + Psi and its misspecified form Y = X theta + Z gamma + Psi with an augmentation part Z gamma through the cogent use of various algebraic formulas and facts in matrix analysis. The coverage of this study includes the matrix derivations of the best linear unbiased estimators under the true and misspecified models, and the establishment of necessary and sufficient conditions for the different estimators to be equivalent under the model assumptions.
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