A single-loop dual subgradient method computes a free-support Wasserstein barycenter in a federated setting without solving mass transportation subproblems at each iteration.
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Federated Calculation of the Free-Support Transportation Barycenter by Single-Loop Dual Decomposition
A single-loop dual subgradient method computes a free-support Wasserstein barycenter in a federated setting without solving mass transportation subproblems at each iteration.