Abstract
We consider estimation of the mean vector, θ, of a spherically symmetric distribution with known scale parameter under quadratic loss and when a residual vector is available. We show minimaxity of generalized Bayes estimators corresponding to superharmonic priors with a non decreasing Laplacian of the form π(||θ||2), under certain conditions on the generating function f (·) of the sampling distributions. The class of sampling distributions includes certain variance mixtures of normals.
| Original language | English |
|---|---|
| Pages (from-to) | 285-296 |
| Number of pages | 12 |
| Journal | Metrika |
| Volume | 77 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 11 2013 |
| Externally published | Yes |
Keywords
- Bayes estimators
- Minimax estimators
- Quadratic loss
- Spherical symmetry
ASJC Scopus subject areas
- Statistics and Probability
- Statistics, Probability and Uncertainty