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Towards Optimal Structured CNN Pruning via Generative Adversarial Learning

CVPR 2019 · Architectures and efficiency › Pruning and efficient tuning · approach: Structured network pruning · 567 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
jointly prune channels and blocks rather than blocks alone (ablation)GAL on ResNet-50 · ImageNet ILSVRC 2012Top-5 error (%): 9.06 -> 9.18; FLOPs 2.33B -> 1.84BMixed
add adversarial regularization to the discriminator (ablation)GAL · ResNet-56 and DenseNet-40 on CIFAR-10generator output similarity to baselineHelped
add FISTA instead of SGD with hard thresholding (ablation)GAL · ResNet-56 on CIFAR-10error after fine-tuning (%): 9.65 -> 8.42Helped
add FISTA instead of SGD with hard thresholding (ablation)GAL · DenseNet-40 on CIFAR-10error after fine-tuning (%): 7.64 -> 5.50Helped
remove the GAN objective (ablation)GAL with FISTA on ResNet-56 and DenseNet-40 · CIFAR-10classification error (%)Hurt
replace the GAN with label-dependent CGAN (ablation)GAL with FISTA on ResNet-56 · CIFAR-10error (%): 8.42 -> 9.56Hurt
fine-tune the pruned LeNet (ablation)GAL-0.1 · MNISTerror (%): 1.03 -> 1.01Hurt
fine-tune the pruned LeNet (ablation)GAL · MNISTerror (%): GAL-0.01: 0.95 -> 0.86; GAL-0.05: 1.05 -> 0.90; GAL-0.1: 1.03 -> 1.01Mixed
increase sparsity from GAL-0.6 to GAL-0.8 (ablation)GAL on ResNet-56 · CIFAR-10error after fine-tuning (%): 6.62 -> 8.42Hurt
increase sparsity from GAL-0.5 to GAL-1 (ablation)GAL on ResNet-50 · ImageNet ILSVRC 2012Top-5 error (%): 9.06 -> 10.25Hurt
increase sparsity from GAL-0.5-joint to GAL-1-joint (ablation)GAL on ResNet-50 · ImageNet ILSVRC 2012Top-5 error (%): 9.18 -> 10.88Hurt

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