Papers › Learning Efficient Convolutional Networks through Network Slimming

Learning Efficient Convolutional Networks through Network Slimming

22 Aug 2017ICCV 2017 10arXiv:1708.06519archive 2025-07-28

Zhuang Liu, Jianguo Li, Zhiqiang Shen, Gao Huang, Shoumeng Yan, Chang-Shui Zhang

The deployment of deep convolutional neural networks (CNNs) in many real world applications is largely hindered by their high computational cost. In this paper, we propose a novel learning scheme for CNNs to simultaneously 1) reduce the model size; 2) decrease the run-time memory footprint; and 3) lower the number of computing operations, without compromising accuracy. This is achieved by enforcing channel-level sparsity in the network in a simple but effective way. Different from many existing approaches, the proposed method directly applies to modern CNN architectures, introduces minimum overhead to the training process, and requires no special software/hardware accelerators for the resulting models. We call our approach network slimming, which takes wide and large networks as input models, but during training insignificant channels are automatically identified and pruned afterwards, yielding thin and compact models with comparable accuracy. We empirically demonstrate the effectiveness of our approach with several state-of-the-art CNN models, including VGGNet, ResNet and DenseNet, on various image classification datasets. For VGGNet, a multi-pass version of network slimming gives a 20x reduction in model size and a 5x reduction in computing operations.

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Code

liuzhuang13/slimming officialmentioned in paperpytorchMIT report
DDGRCF/yolov5_Chinese mentioned on GitHubpytorch report
DDGRCF/yolov5_pruning mentioned on GitHubpytorch report
VainF/Torch-Pruning mentioned on GitHubpytorchMIT report
ZJCV/NetworkSlimming mentioned on GitHubpytorch report
midasklr/yolov5prune mentioned on GitHubpytorch report
mvpzhangqiu/yolov5prune mentioned on GitHubpytorch report
polarizationpruning/PolarizationPruning mentioned on GitHubpytorch report

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Image ClassificationNeural Architecture Searchimage-classification

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Methods

1x1 ConvolutionAverage PoolingBatch NormalizationBottleneck Residual BlockConcatenated Skip ConnectionConvolutionDense BlockDense ConnectionsDropoutGlobal Average PoolingKaiming InitializationMax PoolingReLUResidual BlockResidual ConnectionSoftmax

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