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math.OC2026
Acceleration for Affine-coupling problems
Clement Lezane, Sophie Langer, Wouter M. Koolen
Saddle-point problems play an important role in modern machine learning, including robust optimization and algorithmic fairness. We investigate structured convex--concave minimax p…
math.OC2024
Accelerated Mirror Descent for Non-Euclidean Star-convex Functions
Clement Lezane, Sophie Langer, Wouter M Koolen
Acceleration for non-convex functions is a fundamental challenge in optimisation. We revisit star-convex functions, which are strictly unimodal on all lines through a minimizer. [1…