Radu Balan

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math.NA2025

CUR Matrix Approximation through Convex Optimization for Feature Selection

Kathryn Linehan, Radu Balan

The singular value decomposition (SVD) is commonly used in applications requiring a low rank matrix approximation. However, the singular vectors cannot be interpreted in terms of t…

math.NA2024

Approximation of the Proximal Operator of the $ℓ_{\infty}$ Norm Using a Neural Network

Kathryn Linehan, Radu Balan

Computing the proximal operator of the $ℓ_{\infty}$ norm, $prox_{I^\pm ∣∣ \cdot ∣ ∣_{\infty}} (x)$ , generally requires a sort of the input data, or at least a partial sort…

CUR Matrix Approximation through Convex Optimization for Feature Selection

Approximation of the Proximal Operator of the ℓ∞​ Norm Using a Neural Network

Approximation of the Proximal Operator of the $ℓ_{\infty}$ Norm Using a Neural Network