Bayes estimators for linear models with less than full rank
The Hayes estimator for a parametric function of the coeffi¬cients of a linear model are considered, Five alternative forms of the estimator are derived when the design matrix does not have full rank, Some of the Ridge, Generalized Ridge, Contraction and Generalized Contraction estimators are shown to be special cases of the alternative forms we have derived, Necessary and sufficient conditions for the comparisons of