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Balanced Meta-Softmax for Long-Tailed Visual Recognition

NeurIPS 2020 · Label-efficient and robust learning › Recognition and long-tail · approach: Decoupled and calibrated long-tail training · 315 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use Balanced Softmax and Meta Sampler together (ablation)CIFAR-10-LT and CIFAR-100-LT · CIFAR-LT, imbalance 200top-1 accuracy: Balanced Softmax+DT: 78.6 ± 0.1; BALMS: 81.5 ± 0.0Helped
Use Balanced Softmax instead of standard Softmax (ablation)CIFAR-10-LT and CIFAR-100-LT · CIFAR-LT, imbalance 200top-1 accuracy: Softmax: 71.2 ± 0.3; Balanced Softmax: 79.0 ± 0.8Helped
Use the derived Balanced Softmax 1/4 variant instead of the full Balanced Softmax (ablation)CIFAR-10-LT and CIFAR-100-LT · CIFAR-LT, imbalance 200top-1 accuracy: Balanced Softmax 1/4: 71.6 ± 0.7; Balanced Softmax: 79.0 ± 0.8Hurt
Add class-balanced sampling to Balanced Softmax with decoupled training (ablation)Balanced Softmax · CIFAR-100-LT, imbalance 200top-1 accuracy: Balanced Softmax+DT: 45.1 ± 0.0; Balanced Softmax+CBS+DT: 42.0 ± 0.0Hurt
Use Meta Sampler rather than Meta Reweighter (ablation)Balanced Softmax with decoupled training · CIFAR-LT, imbalance 200top-1 accuracy: CIFAR-10-LT: 81.5 ± 0.0 vs 79.2 ± 0.0; CIFAR-100-LT: 45.5 ± 0.1 vs 45.3 ± 0.3Mixed
Add decoupled training to Balanced Softmax (ablation)Balanced Softmax · CIFAR-LT, imbalance 200top-1 accuracy: Balanced Softmax: 79.0 ± 0.8; Balanced Softmax+DT: 78.6 ± 0.1Mixed
Train with Meta Sampler instead of standard Softmax sampling (ablation)Balanced Softmax · CIFAR-10-LT, imbalance 200top-1 accuracy: DT+MS: 73.6 ± 0.2; BALMS: 81.5 ± 0.0Helped
Replace Balanced Softmax with standard Softmax (ablation)long-tailed classification · CIFAR-LT, imbalance 200top-1 accuracy: Softmax: 71.2 ± 0.3; Balanced Softmax: 79.0 ± 0.8Hurt

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