If is shown that in linear regression models we do not make a great mistake if we substitute some sufficiently precise approximations for the unknown covariance matrix and covariance vector in the expressions for computation of the best linear unbiased estimator and predictor.
@article{104398,
author = {Franti\v sek \v Stulajter},
title = {Robustness of the best linear unbiased estimator and predictor in linear regression models},
journal = {Applications of Mathematics},
volume = {35},
year = {1990},
pages = {162-168},
zbl = {0704.62049},
mrnumber = {1042852},
language = {en},
url = {http://dml.mathdoc.fr/item/104398}
}
Štulajter, František. Robustness of the best linear unbiased estimator and predictor in linear regression models. Applications of Mathematics, Tome 35 (1990) pp. 162-168. http://gdmltest.u-ga.fr/item/104398/
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