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The Privacy Power of Correlated Noise in Decentralized Learning
May 3, 2024, 4:15 a.m. | Youssef Allouah, Anastasia Koloskova, Aymane El Firdoussi, Martin Jaggi, Rachid Guerraoui
cs.CR updates on arXiv.org arxiv.org
Abstract: Decentralized learning is appealing as it enables the scalable usage of large amounts of distributed data and resources (without resorting to any central entity), while promoting privacy since every user minimizes the direct exposure of their data. Yet, without additional precautions, curious users can still leverage models obtained from their peers to violate privacy. In this paper, we propose Decor, a variant of decentralized SGD with differential privacy (DP) guarantees. Essentially, in Decor, users securely …
arxiv can cs.cr cs.dc cs.lg data decentralized distributed exposure large math.oc noise power privacy resources stat.ml
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