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- W3166200246 abstract "We study the so-called distributed two-time-scale gradient method for solving convex optimization problems over a network of agents when the communication bandwidth between the nodes is limited, and so information that is exchanged between the nodes must be quantized. Our main contribution is to provide a novel analysis, resulting to an improved convergence rate of this method as compared to the existing works. In particular, we show that the method converges at a rate $O(log_2 k/sqrt k)$ to the optimal solution, when the underlying objective function is strongly convex and smooth. The key technique in our analysis is to consider a Lyapunov function that simultaneously captures the coupling of the consensus and optimality errors generated by the method." @default.
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- W3166200246 date "2021-05-28" @default.
- W3166200246 modified "2023-09-27" @default.
- W3166200246 title "Improved Convergence Rate for a Distributed Two-Time-Scale Gradient Method under Random Quantization." @default.
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