Lion is claimed to converge at O(d^{1/2}T^{-1/4}) on smooth nonconvex problems, with variance-reduced and distributed extensions, but the communication-efficient theorems are not fully proved.
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Convergence Analysis of the Lion Optimizer in Centralized and Distributed Settings
Lion is claimed to converge at O(d^{1/2}T^{-1/4}) on smooth nonconvex problems, with variance-reduced and distributed extensions, but the communication-efficient theorems are not fully proved.