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Grounding inductive biases in natural images: invariance stems from variations in data

NeurIPS 2021 · Architectures and efficiency › CNN design · approach: Theory of convolutional inductive bias

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace no augmentation with RRCResNet18 · ImageNet valTop-1 accuracy: 63.49± 0.1 -> 70.05± 0.1Helped
Use translation augmentation instead of no augmentation (ablation)ResNet18 · ImageNet valTop-1 accuracy: 63.49± 0.1 -> 69.14± 0.0Helped
Add random-size center crop (scale) to 30% translation (ablation)ResNet18 · ImageNet valTop-1 accuracy: 69.14± 0.0 -> 69.30± 0.0No clear effect
Use translation plus random-size center crop rather than RRC (ablation)ResNet18 · ImageNet valTop-1 accuracy: 70.05± 0.1 -> 69.30± 0.0Hurt
Use scale-only random-size center crop instead of no augmentation (ablation)ResNet18 · ImageNet valTop-1 accuracy: 63.49± 0.1 -> 67.84± 0.1Helped
Use translation-only fixed-size random crop instead of no augmentation (ablation)ResNet18 · ImageNet valTop-1 accuracy: 63.49± 0.1 -> 67.93± 0.0Helped
Set scale-distribution β to 0.1 instead of 1 (ablation)RRC on ResNet18 · ImageNet valTop-1 accuracy: 70.11± 0.0 -> 69.32± 0.0Hurt
Set scale-distribution β to 10 instead of 1 (ablation)RRC on ResNet18 · ImageNet valTop-1 accuracy: 70.11± 0.0 -> 63.74± 0.1Hurt
Increase translation magnitude to 50% with random-size center crop (ablation)ResNet18 · ImageNet valTop-1 accuracy: ~≈ 67.5%Hurt
Add standard augmentation during trainingResNet18 and ViT · ImageNet transformationstranslation invarianceHelped
Add standard augmentation during trainingResNet18 and ViT · ImageNet transformationsscale invarianceNo clear effect
Train the model rather than use its untrained architecture (ablation)ResNet18 and ViT · ImageNet transformationsrotation invarianceHurt

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