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arXiv · 2108.09899

Rate distortion comparison of a few gradient quantizers

Tharindu Adikari
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Abstract

This article is in the context of gradient compression. Gradient compression is a popular technique for mitigating the communication bottleneck observed when training large machine learning models in a distributed manner using gradient-based methods such as stochastic gradient descent. In this article, assuming a Gaussian distribution for the components in gradient, we find the rate distortion trade-off of gradient quantization schemes such as Scaled-sign and Top-K, and compare with the Shannon rate distortion limit. A similar comparison with vector quantizers also is presented.

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Tharindu Adikari. 2021-08-23. Rate distortion comparison of a few gradient quantizers. https://arxiv.org/abs/2108.09899

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