Author

Antti Koskela

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#machine learning Preprint Oct 2026

Federated Differentially Private Optimization via Low-Rank Preconditioning

A federated DP-PCA framework is proposed that achieves linear communication cost while providing central DP guarantees under secure aggregation and gives error bounds for this covariance estimate and for the resulting low-communication preconditioned DP gradient descent.

Antti Koskela, Tejas D. Kulkarni, Elias Raninen · 0 citations