Does SLOPE outperform bridge regression?
Does SLOPE outperform bridge regression?
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SLOPE 是否优于桥回归?
DOI:
10.1093/imaiai/iaab025
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Maleki, Arian
中科院分区:
文献类型:
--
作者:
Wang, Shuaiwen;Weng, Haolei;Maleki, Arian
A recently proposed SLOPE estimator has been shown to adaptively achieve the minimaxestimation rate under high-dimensional sparse linear regression models . Such minimax optimality holds in the regime where the sparsity level, sample sizeand dimensionsatisfy. In this paper, we characterize the estimation error of SLOPE under the complementary regime where bothandscale linearly with, and provide new insights into the performance of SLOPE estimators. We first derive a concentration inequality for the finite sample mean square error (MSE) of SLOPE. The quantity that MSE concentrates around takes a complicated and implicit form. With delicate analysis of the quantity, we prove that among all SLOPE estimators, LASSO is optimal for estimating-sparse parameter vectors that do not have tied nonzero components in the low noise scenario. On the other hand, in the large noise scenario, the family of SLOPE estimators are sub-optimal compared with bridge regression such as the Ridge estimator.
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影响因子:
2.5
作者:
Christos Thrampoulidis;Ehsan Abbasi;B. Hassibi
通讯作者:
Christos Thrampoulidis;Ehsan Abbasi;B. Hassibi
影响因子:
2
作者:
Lihua Lei;P. Bickel;N. Karoui
通讯作者:
Lihua Lei;P. Bickel;N. Karoui
DOI:
--
发表时间:
2018
期刊:
International Conference on Machine Learning
影响因子:
--
作者:
Shuaiwen Wang;Wenda Zhou;Haihao Lu;A. Maleki;V. Mirrokni
通讯作者:
V. Mirrokni
DOI:
--
发表时间:
2017
期刊:
Information and Inference A Journal of the IMA
影响因子:
--
作者:
Haolei Weng;A. Maleki
通讯作者:
A. Maleki
DOI:
--
发表时间:
2019
期刊:
IEEE International Symposium on Information Theory
影响因子:
--
作者:
Hu, Hong;Lu, Yue M.
通讯作者:
Lu, Yue M.