l_p-norm based James-Stein estimation with minimaxity and sparsity
classification
🧮 math.ST
stat.TH
keywords
allowestimatorsminimaxityshrinkagesparsityclasscoordinatesestimated
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A new class of minimax Stein-type shrinkage estimators of a multivariate normal mean is studied where the shrinkage factor is based on an l_p norm. The proposed estimators allow some but not all coordinates to be estimated by 0 thereby allow sparsity as well as minimaxity.
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