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math.OC2026
Group Distributionally Robust Optimization over Decentralized Networks
Haomin Bai, Junyan Sun, Quan Cheng +2
We study group distributionally robust optimization (GDRO) over decentralized networks, where workers collaborate to learn robust models by minimizing the maximum local risk. Exist…
math.OC2026
Dimension-Free Decentralized Nonsmooth Nonconvex Stochastic Optimization
Yuanyu Wan, Lan Xue, Haomin Bai +2
We investigate decentralized nonsmooth nonconvex stochastic optimization over a network of nodes, with the goal of finding an -Goldstein stationary point. The best exist…