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math.ST2023
Sharp minimax optimality of LASSO and SLOPE under double sparsity assumption
Zhifan Li, Yanhang Zhang, Jianxin Yin
This paper introduces a rigorous approach to establish the sharp minimax optimalities of both LASSO and SLOPE within the framework of double sparse structures, notably without rely…
math.ST2023
A minimax optimal approach to high-dimensional double sparse linear regression
Yanhang Zhang, Zhifan Li, Shixiang Liu +1
In this paper, we focus our attention on the high-dimensional double sparse linear regression, that is, a combination of element-wise and group-wise sparsity. To address this probl…