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Zhan-Yuan Cai

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#machine learning Preprint Sep 2026

Curvature-Independent Regret Bounds for Distributed Online Optimization on Hadamard Manifolds

This work establishes the first curvature-independent regret guarantees for decentralized online optimization on Hadamard manifolds, and studies Distributed Riemannian Online Gradient Descent, which combines local Riemannian h-subgradient updates with an implicit Fr\'echet-mean consensus.

Zhan-Yuan Cai, Emre Sahinoglu, Shahin Shahrampour · 0 citations

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