Universal subgradient and proximal bundle methods for convex and strongly convex hybrid composite optimization

Fuente: arXiv
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Hauptverfasser: Guigues, Vincent, Liang, Jiaming, Monteiro, Renato D. C.
Format: Preprint
Veröffentlicht: 2024
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author Guigues, Vincent
Liang, Jiaming
Monteiro, Renato D. C.
author_facet Guigues, Vincent
Liang, Jiaming
Monteiro, Renato D. C.
contents This paper develops two parameter-free methods for solving convex and strongly convex hybrid composite optimization problems, namely, a composite subgradient type method and a proximal bundle type method. Functional complexity bounds for the two methods are established in terms of the unknown strong convexity parameter. The two proposed methods are universal with respect to all problem parameters, including the strong convexity one, and require no knowledge of the optimal value. Moreover, in contrast to previous works, they do not restart nor use multiple threads.
format Preprint
id arxiv_https___arxiv_org_abs_2407_10073
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Universal subgradient and proximal bundle methods for convex and strongly convex hybrid composite optimization
Guigues, Vincent
Liang, Jiaming
Monteiro, Renato D. C.
Optimization and Control
This paper develops two parameter-free methods for solving convex and strongly convex hybrid composite optimization problems, namely, a composite subgradient type method and a proximal bundle type method. Functional complexity bounds for the two methods are established in terms of the unknown strong convexity parameter. The two proposed methods are universal with respect to all problem parameters, including the strong convexity one, and require no knowledge of the optimal value. Moreover, in contrast to previous works, they do not restart nor use multiple threads.
title Universal subgradient and proximal bundle methods for convex and strongly convex hybrid composite optimization
topic Optimization and Control
url https://arxiv.org/abs/2407.10073