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CMT: Convolutional Neural Networks Meet Vision Transformers

CVPR 2022 · Architectures and efficiency › CNN design · approach: Compact CNN architectures · 903 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use a 4-stage hierarchy and lightweight attention (ablation)DeiT-S · ImageNet-1KTop-1 accuracy: 79.8% -> 81.4%Helped
Add a convolution-based stem (ablation)DeiT-S-4Stage · ImageNet-1KTop-1 accuracy: 81.4% -> 81.9%Helped
Add the local perception unit (ablation)DeiT-S-4Stage + Stem · ImageNet-1KTop-1 accuracy: 81.9% -> 82.7%Helped
Add a shortcut connection to LPU (ablation)LPU · ImageNet-1KTop-1 accuracy: 82.0% -> 82.7%Helped
Add the inverted residual feed-forward network (ablation)DeiT-S-4Stage + Stem + LPU · ImageNet-1KTop-1 accuracy: 82.7% -> 83.3%Helped
Add a shortcut connection to IRFFN (ablation)IRFFN · ImageNet-1KTop-1 accuracy: 82.5% -> 83.3%Helped
Add the projection layer (ablation)CMT block ablation · ImageNet-1KTop-1 accuracy: 83.3% -> 83.5%Helped
Replace all layer normalization with batch normalization (ablation)CMT-S · ImageNet-1KTraining convergenceHurt
Replace all batch normalization with layer normalization (ablation)CMT-S · ImageNet-1KTop-1 accuracy: 83.5% -> 83.0%Hurt
Scale depth, dimension, and resolution together instead of scaling depth alone (ablation)CMT-S variants at 9.3B FLOPs · ImageNet-1KTop-1 accuracy: 83.4% -> 84.5%Helped
Use CMT-S instead of DeiT-SImageNet-1K classification · ImageNet-1KTop-1 accuracy: 79.8% -> 83.5%Helped
Use CMT-S instead of Twins-PCPVT-SRetinaNet · COCO val2017mAP: 1.3% mAPHelped

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