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Modular Distributed Nonconvex Learning With Error Feedback
Alma Mater Studiorum -Universita di Bologna, Department of Electrical, Electronic and Information Engineering, Bologna, Italy.ORCID iD: 0000-0002-1190-4174
KTH, School of Electrical Engineering and Computer Science (EECS), Intelligent systems, Decision and Control Systems (Automatic Control). KTH, School of Electrical Engineering and Computer Science (EECS), Centres, Digital futures.ORCID iD: 0000-0002-5634-8802
2025 (English)In: IEEE Control Systems Letters, E-ISSN 2475-1456, Vol. 9, p. 1604-1609Article in journal (Refereed) Published
Abstract [en]

In this paper, we design a novel distributed learning algorithm using stochastic compressed communications. In detail, we pursue a modular approach, merging ADMM and a gradient-based approach, benefiting from the robustness of the former and the computational efficiency of the latter. Additionally, we integrate a stochastic integral action (error feedback) enabling almost sure rejection of the compression error. We analyze the resulting method in nonconvex scenarios and guarantee almost sure asymptotic convergence to the set of stationary points of the problem. This result is obtained using system-theoretic tools based on stochastic timescale separation. We corroborate our findings with numerical simulations in nonconvex classification.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2025. Vol. 9, p. 1604-1609
Keywords [en]
Network Analysis and Control, Optimization algorithms, Stochastic Systems
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-368847DOI: 10.1109/LCSYS.2025.3582677ISI: 001531172800015Scopus ID: 2-s2.0-105009469881OAI: oai:DiVA.org:kth-368847DiVA, id: diva2:1993019
Note

QC 20250924

Available from: 2025-08-28 Created: 2025-08-28 Last updated: 2025-11-13Bibliographically approved

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Bastianello, Nicola

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CiteExportLink to record
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