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- W3043309535 abstract "This article studies a class of nonsmooth decentralized multiagent optimization problems where the agents aim at minimizing a sum of local strongly-convex smooth components plus a common nonsmooth term. We propose a general primal-dual algorithmic framework that unifies many existing state-of-the-art algorithms. We establish linear convergence of the proposed method to the exact minimizer in the presence of the nonsmooth term. Moreover, for the more general class of problems with agent specific nonsmooth terms, we show that linear convergence cannot be achieved (in the worst case) for the class of algorithms that uses the gradients and the proximal mappings of the smooth and nonsmooth parts, respectively. We further provide a numerical counterexample that shows how some state-of-the-art algorithms fail to converge linearly for strongly convex objectives and different local non smooth terms." @default.
- W3043309535 created "2020-07-23" @default.
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- W3043309535 date "2021-06-01" @default.
- W3043309535 modified "2023-10-16" @default.
- W3043309535 title "Decentralized Proximal Gradient Algorithms With Linear Convergence Rates" @default.
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- W3043309535 doi "https://doi.org/10.1109/tac.2020.3009363" @default.
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