Abstract
A test for optimality using the pseudoinverse matrix is given for the case when the matrix of the design is degenerate.
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Translated from Staticheskie Metody, pp. 151–153, 1978.
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Fedorov, V.V. Properties of optimal designs of regression experiments in singular cases. J Math Sci 40, 245–246 (1988). https://doi.org/10.1007/BF01085119
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DOI: https://doi.org/10.1007/BF01085119