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Correlated Privacy Mechanisms for Differentially Private Distributed Mean Estimation
July 4, 2024, 11:02 a.m. | Sajani Vithana, Viveck R. Cadambe, Flavio P. Calmon, Haewon Jeong
cs.CR updates on arXiv.org arxiv.org
Abstract: Differentially private distributed mean estimation (DP-DME) is a fundamental building block in privacy-preserving federated learning, where a central server estimates the mean of $d$-dimensional vectors held by $n$ users while ensuring $(\epsilon,\delta)$-DP. Local differential privacy (LDP) and distributed DP with secure aggregation (SecAgg) are the most common notions of DP used in DP-DME settings with an untrusted server. LDP provides strong resilience to dropouts, colluding users, and malicious server attacks, but suffers from …
aggregation arxiv block building central cs.cr cs.it cs.lg delta differential privacy distributed epsilon federated federated learning local math.it mechanisms privacy private server
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