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Leveraging Unlabeled Data to Track Memorization

ICLR 2023 · Label-efficient and robust learning › Noisy labels · approach: Sample selection and co-training · 0 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use susceptibility to filter highly memorizing models before ranking by training accuracyModel selection on CIFAR-10 with 50% label noise · CIFAR-10 50% label noisecorrelation between training and test accuracy: \rho=0.608 -> \rho=0.951Helped
Select using both high training accuracy and low susceptibility rather than high training accuracy alone (ablation)Model selection on CIFAR-10 with 50% label noise · CIFAR-10 50% label noisetest accuracy: 70.59\% -> 76\%Helped
Use susceptibility with training accuracy rather than oracle clean/noisy labelsModel selection on CIFAR-10 with 50% label noise · CIFAR-10 50% label noisetest accuracy: 77.93_{\pm 4.68}\% vs 76.15_{\pm 6.32}\%No clear effect
Estimate model quality with susceptibility instead of noisy validation accuracy on a small held-out setModel selection on CIFAR-10 with 50% label noise · CIFAR-10 50% label noise, set size 10Kendall τ correlation with test accuracy: 0.244 -> \mathbf{0.792}Helped
Use susceptibility rather than noisy validation accuracy on 128 held-out examplesModel selection on CIFAR-10 with 50% label noise · CIFAR-10 50% label noise, set size 128Kendall τ correlation with test accuracy: 0.458 -> \mathbf{0.890}Helped
Select with high training accuracy as well as low susceptibility, rather than low susceptibility alone (ablation)Noisy-label model selection · Clothing-1Mtest accuracy: 57.893\% -> 61.799\%Helped
Select with high training accuracy as well as low susceptibility, rather than low susceptibility alone (ablation)Noisy-label model selection · Animal-10Ntest accuracy: 92.508\% -> 96.371\%Helped
Select with high training accuracy as well as low susceptibility, rather than low susceptibility alone (ablation)Noisy-label model selection · CIFAR-10Ntest accuracy: 85.44\% -> 87.2\%Helped
Track memorization with susceptibility ζ computed on randomly labeled examplesNeural networks trained on noisy CIFAR-10 · CIFAR-10 50% label noisePearson correlation with Train ACC Noisy: \rho=0.884Helped
Use overall training-accuracy increase as a signal of noisy-label memorization (ablation)Neural networks trained on noisy CIFAR-10 · CIFAR-10 50% label noisecorrelation with accuracy on noisy training subset: \rho=0.636Hurt
Use the training accuracy drop after injecting random labels to track memorization (ablation)Neural networks trained on noisy CIFAR-10 · CIFAR-10 50% label noisecorrelation with accuracy on noisy training subsetHurt
Use the GMM mean-difference early-stopping metric to compare memorization across settings (ablation)Neural networks trained on noisy CIFAR-10 · CIFAR-10 50% label noisecorrelation with accuracy on noisy training subsetHurt

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