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Improving Calibration for Long-Tailed Recognition

CVPR 2021 · Label-efficient and robust learning › Recognition and long-tail · approach: Decoupled and calibrated long-tail training · 281 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use MiSLAS instead of LWS+mixupResNet-32 · CIFAR-10-LT IF 100top-1 accuracy (%): 79.1 -> 82.1Helped
Use MiSLAS instead of LWS+mixupResNet-32 · CIFAR-100-LT IF 100ECE (%): 22.5 -> 4.83Helped
Add mixup in Stage-1 representation learning (ablation)cRT on ImageNet-LT · ImageNet-LTtop-1 accuracy (%): 50.3 -> 51.7Helped
Add mixup in Stage-1 representation learning (ablation)LWS on ImageNet-LT · ImageNet-LTtop-1 accuracy (%): 51.2 -> 52.0Helped
Add mixup to Stage-2 as well as Stage-1 (ablation)cRT on ImageNet-LT · ImageNet-LTtop-1 accuracy (%): 51.7 -> 51.6Hurt
Add label-aware smoothing instead of class-balanced cross-entropy (ablation)ResNet-32 classifier training · CIFAR-100-LT IF 100ECE (%): 20.2 -> 4.83Helped
Add label-aware smoothing instead of class-balanced cross-entropy (ablation)ResNet-32 classifier training · CIFAR-100-LT IF 100top-1 accuracy (%): 44.3 -> 47.0Helped
Update BN running statistics for the Stage-2 sampler (ablation)LWS · CIFAR-100-LT IF 100top-1 accuracy (%): +1.1%Helped
Choose concave rather than the other tested smoothing-function forms (ablation)LAS · CIFAR-100-LT IF 100top-1 accuracy (%)Helped
Vary the smoothing-function form (ablation)LAS · CIFAR-100-LT IF 100top-1 accuracy (%): 0.3% increaseNo clear effect
Set epsilon_1=0.3 and epsilon_K=0.0 (ablation)LAS · CIFAR-10-LT IF 100top-1 accuracy (%): 3.3%Helped
Set epsilon_1=0.4 and epsilon_K=0.1 (ablation)LAS · CIFAR-100-LT IF 100top-1 accuracy (%): 0.9%Helped

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