The ℓ¹-regularized empirical risk minimizer achieves minimax-optimal convergence rate n^{-r/(1+b-br)} for nonlinear statistical inverse learning under variational source conditions and polynomial effective-dimension decay.
Compressed sensing for inverse problems and the sample complexity of the sparse radon transform.Journal of the European Mathematical Society, pages 1–56, 2025
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Statistical inverse learning and $\ell^1$-regularization
The ℓ¹-regularized empirical risk minimizer achieves minimax-optimal convergence rate n^{-r/(1+b-br)} for nonlinear statistical inverse learning under variational source conditions and polynomial effective-dimension decay.