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Compressed Gradient Tracking for Decentralized Optimization Over General Directed Networks
April 11, 2024, 4:43 a.m. | Zhuoqing Song, Lei Shi, Shi Pu, Ming Yan
cs.LG updates on arXiv.org arxiv.org
Abstract: In this paper, we propose two communication efficient decentralized optimization algorithms over a general directed multi-agent network. The first algorithm, termed Compressed Push-Pull (CPP), combines the gradient tracking Push-Pull method with communication compression. We show that CPP is applicable to a general class of unbiased compression operators and achieves linear convergence rate for strongly convex and smooth objective functions. The second algorithm is a broadcast-like version of CPP (B-CPP), and it also achieves linear convergence …
abstract agent algorithm algorithms arxiv class communication compression cpp cs.dc cs.lg cs.ma decentralized eess.sp general gradient math.oc multi-agent network networks optimization paper show tracking type unbiased
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