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Bottleneck Transformers for Visual Recognition

CVPR 2021 · Detection and segmentation › CNN features · approach: Convolution-transformer backbones · 1,304 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace the final three spatial convolutions with global self-attentionR50 backbone · COCO val, 36 epochs, jitter [0.8, 1.25]mask AP: 37.7 -> 38.9Helped
Replace the final three spatial convolutions with global self-attentionR50 backbone · COCO val, 12 epochsmask AP: 35.0 -> 35.3No clear effect
Use longer training with the default scale jitterBoT50 · COCO val, 72 vs 36 epochs, jitter [0.8, 1.25]box AP gain over R50: +1.5 -> +0.9Hurt
Increase multi-scale jitter to [0.1, 2.0]BoT50 relative to R50 · COCO val, 72 epochsmask AP gain: +0.8 -> +1.5Helped
Use content-content attention interaction qkᵀ (ablation)BoT50 · COCO val, 36 epochsbox AP: +0.6Helped
Add relative content-position interaction qrᵀ (ablation)BoT50 · COCO val, 36 epochsbox AP: +1.0Helped
Combine content-content and relative content-position interactions (ablation)BoT50 · COCO val, 36 epochsbox AP: +1.5Helped
Use absolute rather than relative position encodings (ablation)BoT50 · COCO val, 36 epochsbox AP: 43.6 -> 42.5Hurt
Insert one BoT block in c4 instead of a Non-Local block (ablation)R50 · COCO val, 36 epochsbox AP: 43.1 -> 43.7Helped
Use stride 1 in all final-group attention layers (ablation)BoTNet-S1-50 · ImageNet-1K val, 100 epochstop-1 accuracy: 76.8 -> 77.7Helped
Use the improved training setting with longer training and stronger augmentationBoT50 · ImageNet-1K val, 200 epochstop-1 accuracy: +0.6%Helped
Use the improved training setting with longer training and stronger augmentationBoT-S1-50 · ImageNet-1K val, 200 epochstop-1 accuracy: +1.4%Helped

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