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SimPLE: Similar Pseudo Label Exploitation for Semi-Supervised Classification

CVPR 2021 · Label-efficient and robust learning › Semi-supervised learning · approach: Confidence-based pseudo-label selection · 168 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add Pair Loss to SimPLE (ablation)SimPLE · CIFAR-100, 10000 labels, K=2Top-1 test accuracy: 69.07% -> 70.82%Helped
Add Pair Loss to SimPLE with K=7 (ablation)SimPLE · CIFAR-100, 10000 labels, K=7Top-1 test accuracy: 69.94% -> 73.04%Helped
Increase weak augmentations K from 2 to 7 (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 70.82% -> 73.04%Helped
Use RandAugment instead of fixed augmentations (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 67.91% -> 70.82%Helped
Lower confidence threshold to 0.75 (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 70.82% -> 71.96%No clear effect
Lower similarity threshold to 0.7 (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 70.82% -> 70.85%No clear effect
Use Pair Loss weight 50 instead of 150 (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 70.82% -> 71.34%No clear effect
Use Pair Loss weight 250 instead of 150 (ablation)SimPLE · CIFAR-100, 10000 labelsTop-1 test accuracy: 70.82% -> 71.42%No clear effect
Use L2 distance for Pair Loss instead of the Bhattacharyya-based distance (ablation)SimPLE · Experiments reported in textTest accuracy: 0.53%Hurt
Add Pair LossSimPLE · CIFAR-10 and SVHNTop-1 test accuracyNo clear effect
Use SimPLE instead of the strongest reported baselineSemi-supervised classification · CIFAR-100, 10000 labels, WRN 28-8Top-1 test accuracy: 77.40% -> 78.11%Helped
Use SimPLE instead of the strongest reported baselineSemi-supervised classification · Mini-ImageNet, 4000 labels, WRN 28-2Top-1 test accuracy: 60.50% -> 66.55%Helped

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