In the paper a usual block design with treatment effects fixed and block effects random is considered. To compare experimental design the asymptotic covariance matrix of a robust estimator proposed by Bednarski and Zontek (1996) for simultaneous estimation of shift and scale parameters is used. Asymptotically A- and D- optimal block designs in the class of designs with bounded block sizes are characterized.
@article{bwmeta1.element.bwnjournal-article-doi-10_7151_dmps_1144, author = {Ewa Syn\'owka-Bejenka and Stefan Zontek}, title = {On optimality of the orthogonal block design}, journal = {Discussiones Mathematicae Probability and Statistics}, volume = {32}, year = {2012}, pages = {59-68}, zbl = {06248587}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmps_1144} }
Ewa Synówka-Bejenka; Stefan Zontek. On optimality of the orthogonal block design. Discussiones Mathematicae Probability and Statistics, Tome 32 (2012) pp. 59-68. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmps_1144/
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