collaborators
Showing math.OCShow all

8 papers · 1 filter

math.OC2026

Stability of Quadratically Regularized Optimal Transport

Alberto González-Sanz, Marcel Nutz

Quadratically regularized optimal transport (QOT) is a sparse alternative to entropic optimal transport. We develop a quantitative stability theory for QOT under perturbations of t…

math.OC2026

Polyak-Lojasiewicz Inequality for Quadratically Regularized Optimal Transport

Alberto González-Sanz, Marcel Nutz, Andrés Riveros Valdevenito

Quadratically regularized optimal transport (QOT) is an alternative to entropic regularization that yields sparse couplings and avoids numerical instabilities due to exponential sc…

math.OC2026

Linear Convergence of Gradient Descent for Quadratically Regularized Optimal Transport

Alberto González-Sanz, Marcel Nutz, Andrés Riveros Valdevenito

In optimal transport, quadratic regularization is an alternative to entropic regularization when sparse couplings or small regularization parameters are desired. Quadratic regulari…

math.OC2026

Entropic regularization of Monge's problem

Marcel Nutz, Chenyang Zhong

We study the vanishing-regularization limit of entropically regularized optimal transport (EOT) for the Euclidean distance cost in dimension . We develop a co…

math.OC2026

Sparsity of Quadratically Regularized Optimal Transport: Scalar Case

Alberto González-Sanz, Marcel Nutz

The quadratically regularized optimal transport problem is empirically known to have sparse solutions: its optimal coupling has sparse support for small regulari…

math.OC2025

Quantitative Convergence of Quadratically Regularized Linear Programs

Alberto González-Sanz, Marcel Nutz

Linear programs with quadratic regularization are attracting renewed interest due to their applications in optimal transport: unlike entropic regularization, the squared-norm penal…