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Debiased Learning From Naturally Imbalanced Pseudo-Labels

CVPR 2022 · Label-efficient and robust learning › Semi-supervised learning · approach: Confidence-based pseudo-label selection · 98 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add adaptive debiasing and adaptive marginal loss to FixMatch (ablation)FixMatch · CIFAR10-LT, γ=100, 30% labelsaccuracy: 73.5 -> 80.6Helped
Add adaptive debiasing to FixMatch (ablation)FixMatch · CIFAR10-LT, γ=100, 30% labelsaccuracy: 73.5 -> 79.6Helped
Add adaptive marginal loss to debiased FixMatch (ablation)DebiasPL · CIFAR10-LT, γ=100, 30% labelsaccuracy: 79.6 -> 80.6Helped
Add adaptive debiasing and adaptive marginal loss to FixMatch (ablation)FixMatch · CIFAR10, 4 labels per classaccuracy: 86.1 -> 94.6Helped
Add adaptive debiasing to FixMatch (ablation)FixMatch · CIFAR10, 4 labels per classaccuracy: 86.1 -> 93.3Helped
Add DebiasPL to existing SSL methodsFixMatch, MixMatch, and UDA · CIFAR10, 4 labels per classtop-1 accuracy: 89.7 ± 4.6 -> 94.6 ± 1.3; 47.5 ± 11.5 -> 61.7 ± 6.1; 29.1 ± 5.9 -> 43.2 ± 5.2Helped
Use debias factor λ=0.5 rather than λ=0.0 (ablation)DebiasPL · CIFAR10-LT, γ=100, 30% labelsaccuracy: 73.5 -> 80.6Helped
Vary the debias factor λ across the tested values (ablation)DebiasPL · CIFAR10-LT, γ=100, 30% labelsaccuracy: λ=0.25: 79.5; λ=0.5: 80.6; λ=0.75: 80.5; λ=1.0: 80.5; λ=2.0: 77.7Mixed
Increase CLIP confidence threshold from τ_clip=0.2 to τ_clip=0.95 (ablation)CLIP + DebiasPL · ImageNet-1K ZSLtop-1 accuracy: 55.9 -> 67.7Helped
Use DebiasPL instead of vanilla CLIP zero-shot predictionsCLIP · ImageNet-1K ZSLtop-1 accuracy: 59.6 -> 68.3Helped
Use FixMatch self-training with CLIP pseudo-labels without debiasingCLIP · ImageNet-1K ZSLtop-1 accuracy: 59.6 -> 55.7Hurt
Add DebiasPL to FixMatchFixMatch w/ EMAN · ImageNet-1K SSL, 0.2% labelstop-1 accuracy: 43.6 -> 47.9Helped

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