Minimax Bayes estimators of a multivariate normal mean |
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Authors: | Ray E Faith |
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Affiliation: | Department of Statistics, Stanford University USA |
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Abstract: | In three or more dimensions it is well known that the usual point estimator for the mean of a multivariate normal distribution is minimax but not admissible with respect to squared Euclidean distance loss. This paper gives sufficient conditions on the prior distribution under which the Bayes estimator has strictly lower risk than the usual estimator. Examples are given for which the posterior density is useful in the formation of confidence sets. |
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Keywords: | 62F10 62F15 Admissibility minimaxity multivariate normal mean choice of priors |
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