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Communication Dans Un Congrès Année : 2023

Federated Learning on Personal Data Management Systems: Decentralized and Reliable Secure Aggregation Protocols

Résumé

The development and adoption of personal data management systems (PDMS) has been fueled by legal and technical means such as smart disclosure, data portability and data altruism. By using a PDMS, individuals can effortlessly gather and share data, generated directly by their devices or as a result of their interactions with companies or institutions. In this context, federated learning appears to be a very promising technology, but it requires secure, reliable, and scalable aggregation protocols to preserve user privacy and account for potential PDMS dropouts. Despite recent significant progress in secure aggregation for federated learning, we still lack a solution suitable for the fully decentralized PDMS context. This paper proposes a family of fully decentralized protocols that are scalable and reliable with respect to dropouts. We focus in particular on the reliability property which is key in a peer-to-peer system wherein aggregators are system nodes and are subject to dropouts in the same way as contributor nodes. We show that in a decentralized setting, reliability raises a tension between the potential completeness of the result and the aggregation cost. We then propose a set of strategies that deal with dropouts and offer different trade-offs between completeness and cost. We extensively evaluate the proposed protocols and show that they cover the design space allowing to favor completeness or cost in all settings.
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hal-04234906 , version 1 (11-10-2023)

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  • HAL Id : hal-04234906 , version 1

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Julien Mirval, Luc Bouganim, Iulian Sandu Popa. Federated Learning on Personal Data Management Systems: Decentralized and Reliable Secure Aggregation Protocols. BDA 2023 - 39ème Conférence sur la Gestion de Données – Principes, Technologies et Applications, Université de Montpellier, Oct 2023, Montpellier, France. pp.1-12. ⟨hal-04234906⟩
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