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All You Need Is a Few Shifts: Designing Efficient Convolutional Neural Networks for Image Classification

CVPR 2019 · Architectures and efficiency › CNN design · approach: Efficient CNN scaling and dynamic inference · 89 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use FE-Net 1.375x with SSL instead of depthwise convolution (ablation)FE-Net 1.375x · ImageNetGPU inference time: 30.4ms -> 23.1msHelped
Replace SSL with depthwise convolution (ablation)FE-Net 1.375x · ImageNetTop-1 accuracy: 75.0% -> 75.2%No clear effect
Place SE in the inverted bottleneck expansion part rather than at the block output (ablation)FE-Net 1.375x · ImageNetTop-1 accuracy: 75.6% -> 76.5%Helped
Increase the shift penalty from λ=0 to λ=5e-4 (ablation)ShiftResNet-20 · CIFAR10Accuracy: 91.7% -> 89.8%Hurt
Increase the shift penalty from λ=0 to λ=5e-4 (ablation)ShiftResNet-20 · CIFAR100Accuracy: 69.2% -> 67.7%Hurt
Add shift operations rather than use 1x1 convolutions only (ablation)ShiftResNet-20 · CIFAR100Accuracy: 56.7% -> 69.2%Helped
Remove the 4 least important shift layers (ablation)ShiftResNet-20 SSL · CIFAR100Accuracy: 69.2% -> 68.2%Hurt
Remove all shift layers (ablation)ShiftResNet-20 SSL · CIFAR10Accuracy: 91.7% -> 81.5%Hurt
Remove all shift layers (ablation)ShiftResNet-20 SSL · CIFAR100Accuracy: 69.2% -> 56.7%Hurt
Use shift learning rather than heuristic grouped shifts (ablation)ShiftResNet-20 · CIFAR10Accuracy: 90.6% -> 91.7%Helped
Use shift learning rather than heuristic grouped shifts (ablation)ShiftResNet-20 · CIFAR100Accuracy: 68.6% -> 69.2%Helped
Add SE modules (ablation)FE-Net 1.375x · ImageNetTop-1 accuracy: 75.0% -> 75.6%; 75.0% -> 76.5%Helped

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