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HEAL: Resilient and Self-* Hub-based Learning

Summary

HEAL is a novel cross-layer decentralized learning framework that combines strengths of Federated, Gossip, and Epidemic Learning. Using the Elevator algorithm, it dynamically promotes nodes as aggregators, achieving fault tolerance and performance comparable to Federated Learning in crash-free environments, and outperforming Gossip and Epidemic Learning in crash-prone settings.

SourcearXiv Machine LearningAuthor: Mohamed Amine Legheraba (NPA), Stefan Galkiewicz (NPA), Maria Gradinariu Potop-Butucaru (NPA), S\'ebastien Tixeuil (NPA, IUF, LINCS)
HEAL: Resilient and Self-* Hub-based Learning
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[2605.27475] HEAL: Resilient and Self-* Hub-based Learning

[Submitted on 26 May 2026]

Title:HEAL: Resilient and Self-* Hub-based Learning

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Abstract:Decentralized learning enhances privacy, scalability, and fault tolerance by distributing data and computation across nodes. A popular approach is Federated learning, which relies on a central aggregator, yet faces challenges such as server vulnerabilities, scalability issues, privacy risks and most importantly, the single point of failure. Alternatively Gossip Learning and Epidemic Learning offer fully decentralization through peer-to-peer exchanges of model updates, ensuring robustness and privacy, at the price of slower model convergence. In this work, we introduce a novel decentralized learning framework called HEAL. HEAL is the first cross-layer decentralized learning framework that exploits an optimized self-organizing and self-healing underlying P2P overlay combining the strengths of Federated Learning, Gossip and Epidemic Learning. Leveraging the recently proposed Elevator algorithm, HEAL promotes dynamically chosen nodes to act as aggregators. Through simulations, we demonstrate that HEAL has similar performances to that of Federated Learning in crash-free settings, while being fully decentralized and fault-tolerant. In crash and churn prone environments HEAL outperforms Gossip and Epidemic Learning.

Subjects:

Machine Learning (cs.LG); Artificial Intelligence (cs.AI)

Cite as: arXiv:2605.27475 [cs.LG]

(or arXiv:2605.27475v1 [cs.LG] for this version)

https://doi.org/10.48550/arXiv.2605.27475

arXiv-issued DOI via DataCite (pending registration)

Submission history

From: Mohamed Amine LEGHERABA [view email] [via CCSD proxy] [v1] Tue, 26 May 2026 11:38:41 UTC (294 KB)

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Key points and analysis

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Key points

  • HEAL is the first cross-layer decentralized learning framework integrating Federated, Gossip, and Epidemic Learning.
  • It uses the Elevator algorithm for dynamic aggregation node selection, enabling self-organization and self-healing.
  • Performance matches Federated Learning in stable conditions and exceeds Gossip/Epidemic Learning under node failures.

Highlights and analysis are generated automatically and may contain errors. Check the original source.