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The Effect of Network Width on the Performance of Large-batch Training

3 Pith papers cite this work. Polarity classification is still indexing.

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abstract

Distributed implementations of mini-batch stochastic gradient descent (SGD) suffer from communication overheads, attributed to the high frequency of gradient updates inherent in small-batch training. Training with large batches can reduce these overheads; however, large batches can affect the convergence properties and generalization performance of SGD. In this work, we take a first step towards analyzing how the structure (width and depth) of a neural network affects the performance of large-batch training. We present new theoretical results which suggest that--for a fixed number of parameters--wider networks are more amenable to fast large-batch training compared to deeper ones. We provide extensive experiments on residual and fully-connected neural networks which suggest that wider networks can be trained using larger batches without incurring a convergence slow-down, unlike their deeper variants.

fields

cs.CL 2 cs.LG 1

years

2022 1 2021 2

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Scaling Laws for Transfer

cs.LG · 2021-02-02 · unverdicted · novelty 6.0

Effective data transferred from pre-training to fine-tuning is described by a power law in model parameter count and fine-tuning dataset size, acting like a multiplier on the fine-tuning data.

Language Models (Mostly) Know What They Know

cs.CL · 2022-07-11 · unverdicted · novelty 6.0

Language models show good calibration when asked to estimate the probability that their own answers are correct, with performance improving as models get larger.

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