24th Conference of the International Federation of Operational Research Societies
Abstract Submission

904. Acceleration strategies for gradient methods

Invited abstract in session MC-37: Optimization algorithms and applications 1, stream Nonlinear Optimization.

Monday, 10:30-12:00
Room: JUR – Seminar-Raum 43

Authors (first author is the speaker)

1. Anna De Magistris
Department of Mathematics and Physics, University of Campania “Luigi Vanvitelli”

Abstract

Gradient methods are fundamental to large-scale optimization, yet acceleration remains a key challenge. This work moves beyond standard negative gradients by employing composite search directions. The first strategy executes a minimization process within low-dimensional affine subspaces, specifically targeting convex quadratic problems. The second adapts the “twin” concept from Kaczmarz iterations as a means of acceleration. Numerical experiments demonstrate that both strategies significantly enhance convergence and robustness.

Keywords

Status: accepted


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