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News/ZO-COSMO: Index-Free One-Hop Mixing for Decentralized Zeroth-Order Optimization
arxiv
PublishedSeptember 24, 2026 at 4:00 AM

ZO-COSMO: Index-Free One-Hop Mixing for Decentralized Zeroth-Order Optimization

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arXiv:2609.27199v1 Announce Type: new Abstract: Sparse communication in decentralized zeroth-order learning requires compatible peer-state coordinates. We characterize this one-hop condition and develop \textsf{ZO-COSMO}, coupling two-query estimation with average-preserving masked consensus using $

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