• Corpus ID: 59553565

Decentralized Stochastic Optimization and Gossip Algorithms with Compressed Communication

@inproceedings{Koloskova2019DecentralizedSO,
title={Decentralized Stochastic Optimization and Gossip Algorithms with Compressed Communication},
author={Anastasia Koloskova and Sebastian U. Stich and Martin Jaggi},
booktitle={ICML},
year={2019}
}
• Published in ICML 1 February 2019
• Computer Science, Mathematics
We consider decentralized stochastic optimization with the objective function (e.g. data samples for machine learning task) being distributed over $n$ machines that can only communicate to their neighbors on a fixed communication graph. To reduce the communication bottleneck, the nodes compress (e.g. quantize or sparsify) their model updates. We cover both unbiased and biased compression operators with quality denoted by $\omega \leq 1$ ($\omega=1$ meaning no compression). We (i) propose a…
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