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Hierarchical Muon: Tiled Newton-Schulz Updates for Efficient Muon Optimization

Hierarchical Muon applies tiled Newton-Schulz updates to momentum matrices, reducing work to O(HWTK) while preserving local spectral interactions and maintaining training behavior near full-matrix Muon.

Ziyuan Tang, Tianshi Xu, Yousef El-Mabruk Saad, Yuanzhe Xi

Published Jun 25, 2026 · 0 citations

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AI panel: 8 of 20 reviewers recommend it
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medium 3/10
strict 1/5