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- W1987371344 abstract "For high-dimensional supervised learning problems, often using problem-specific assumptions can lead to greater accuracy. For problems with grouped covariates, which are believed to have sparse effects both on a group and within group level, we introduce a regularized model for linear regression with ℓ1 and ℓ2 penalties. We discuss the sparsity and other regularization properties of the optimal fit for this model, and show that it has the desired effect of group-wise and within group sparsity. We propose an algorithm to fit the model via accelerated generalized gradient descent, and extend this model and algorithm to convex loss functions. We also demonstrate the efficacy of our model and the efficiency of our algorithm on simulated data. This article has online supplementary material." @default.
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- W1987371344 date "2013-04-01" @default.
- W1987371344 modified "2023-10-11" @default.
- W1987371344 title "A Sparse-Group Lasso" @default.
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- W1987371344 doi "https://doi.org/10.1080/10618600.2012.681250" @default.
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