SSF enables efficient federated learning under heterogeneous data by optimizing in a low-dimensional subspace with projected corrections and backfill updates, achieving a non-asymptotic convergence rate of order O~(1/T + 1/sqrt(NKT)).
Qsparse-local-SGD: Distributed SGD with quantization, sparsification, and local computations.IEEE Journal on Selected Areas in Information Theory, 2019
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Subspace Optimization for Efficient Federated Learning under Heterogeneous Data
SSF enables efficient federated learning under heterogeneous data by optimizing in a low-dimensional subspace with projected corrections and backfill updates, achieving a non-asymptotic convergence rate of order O~(1/T + 1/sqrt(NKT)).