A Channel-Pruned and Weight-Binarized Convolutional Neural Network for Keyword Spotting

Jiancheng Lyu; Spencer Sheen

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arXiv · 1909.05623

A Channel-Pruned and Weight-Binarized Convolutional Neural Network for Keyword Spotting

Jiancheng Lyu·Spencer Sheen

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Abstract

We study channel number reduction in combination with weight binarization (1-bit weight precision) to trim a convolutional neural network for a keyword spotting (classification) task. We adopt a group-wise splitting method based on the group Lasso penalty to achieve over 50% channel sparsity while maintaining the network performance within 0.25% accuracy loss. We show an effective three-stage procedure to balance accuracy and sparsity in network training.

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Jiancheng Lyu, Spencer Sheen. 2019-09-12. A Channel-Pruned and Weight-Binarized Convolutional Neural Network for Keyword Spotting. https://arxiv.org/abs/1909.05623

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