Jk. Ghosh et al., 2ND-ORDER PITMAN ADMISSIBILITY AND PITMAN CLOSENESS - THE MULTIPARAMETER CASE AND STEIN-RULE ESTIMATORS, Journal of Multivariate Analysis, 57(1), 1996, pp. 52-68
In a multiparameter estimation problem, for first-order efficient esti
mators, second-order Pitman admissibility, and Pitman closeness proper
ties are studied. Bearing in mind the dominant role of Stein-rule esti
mators in multiparameter estimation theory, such second-order properti
es are also studied for shrinkage maximum likelihood estimators. (C) 1
996 Academic Press, Inc.