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- W168562799 abstract "We consider a problem of estimating a sparse group of sparse normal mean vectors. The proposed approach is based on penalized likelihood estimation with complexity penalties on the number of nonzero mean vectors and the numbers of their significant components, and can be performed by a computationally fast algorithm. The resulting estimators are developed within Bayesian framework and can be viewed as MAP estimators. We establish their adaptive minimaxity over a wide range of sparse and dense settings. The presented short simulation study demonstrates the efficiency of the proposed approach that successfully competes with the recently developed sparse group lasso estimator." @default.
- W168562799 created "2016-06-24" @default.
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- W168562799 date "2011-04-10" @default.
- W168562799 modified "2023-09-27" @default.
- W168562799 title "Estimation of sparse group of sparse vecrors" @default.
- W168562799 hasPublicationYear "2011" @default.
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