Estimation of the Scale Matrix of a Multivariate T-Model under Entropy Loss

Abstract

This paper deals with the estimation of the scale matrix of a multivariate t-model with unknown location vector and scale matrix to improve upon the usual estimators based on the sample sum of product matrix. The well-known results of the estimation of the scale matrix of the multivariate normal model under the assumption of entropy loss function have been generalized to that of a multivariate t-model.