Improved Convergence Rates of Muon Optimizer for Nonconvex Optimization

Fuente: arXiv
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Autores principales: Nagashima, Shuntaro, Iiduka, Hideaki
Formato: Preprint
Publicado: 2026
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author Nagashima, Shuntaro
Iiduka, Hideaki
author_facet Nagashima, Shuntaro
Iiduka, Hideaki
contents The Muon optimizer has recently attracted attention due to its orthogonalized first-order updates, and a deeper theoretical understanding of its convergence behavior is essential for guiding practical applications; however, existing convergence guarantees are either coarse or obtained under restrictive analytical settings. In this work, we establish sharper convergence guarantees for the Muon optimizer through a direct and simplified analysis that does not rely on restrictive assumptions on the update rule. Our results improve upon existing bounds by achieving faster convergence rates while covering a broader class of problem settings. These findings provide a more accurate theoretical characterization of Muon and offer insights applicable to a broader class of orthogonalized first-order methods.
format Preprint
id arxiv_https___arxiv_org_abs_2601_19400
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Improved Convergence Rates of Muon Optimizer for Nonconvex Optimization
Nagashima, Shuntaro
Iiduka, Hideaki
Optimization and Control
Machine Learning
The Muon optimizer has recently attracted attention due to its orthogonalized first-order updates, and a deeper theoretical understanding of its convergence behavior is essential for guiding practical applications; however, existing convergence guarantees are either coarse or obtained under restrictive analytical settings. In this work, we establish sharper convergence guarantees for the Muon optimizer through a direct and simplified analysis that does not rely on restrictive assumptions on the update rule. Our results improve upon existing bounds by achieving faster convergence rates while covering a broader class of problem settings. These findings provide a more accurate theoretical characterization of Muon and offer insights applicable to a broader class of orthogonalized first-order methods.
title Improved Convergence Rates of Muon Optimizer for Nonconvex Optimization
topic Optimization and Control
Machine Learning
url https://arxiv.org/abs/2601.19400