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Towards Last-layer Retraining for Group Robustness with Fewer Annotations

NeurIPS 2023 · Architectures and efficiency › RNNs and normalization · approach: Representation geometry and collapse · 2 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Class-balance the last-layer retraining data rather than leave it unbalanced (ablation)Last-layer retraining · CelebAworst-group accuracy: 41.9 ± 1.4 -> 73.7 ± 2.8Helped
Class-balance the last-layer retraining data rather than leave it unbalanced (ablation)Last-layer retraining · CivilCommentsworst-group accuracy: 57.6 ± 4.2 -> 80.4 ± 0.8Helped
Class-balance the last-layer retraining data rather than leave it unbalanced (ablation)Last-layer retraining · Waterbirdsworst-group accuracy: 88.0 ± 0.8 -> 92.6 ± 0.8Helped
Class-balance the last-layer retraining data rather than leave it unbalanced (ablation)Last-layer retraining · MultiNLIworst-group accuracy: 64.6 ± 1.0 -> 64.7 ± 1.1No clear effect
Select disagreement points between ERM and early-stopped models instead of misclassified points (ablation)SELF · CivilCommentsworst-group accuracy: 62.7 ± 4.6 -> 79.1 ± 2.1Helped
Select disagreement points between ERM and early-stopped models instead of misclassified points (ablation)SELF · CelebAworst-group accuracy: 83.0 ± 6.1 -> 83.9 ± 0.9Helped
Select disagreement points between ERM and early-stopped models instead of misclassified points (ablation)SELF · MultiNLIworst-group accuracy: 72.2 ± 2.2 -> 70.7 ± 2.5Hurt
Select disagreement points between ERM and early-stopped models instead of misclassified points (ablation)SELF · Waterbirdsworst-group accuracy: 92.6 ± 0.8 -> 93.0 ± 0.3No clear effect
Use early-stop disagreement rather than dropout disagreement (ablation)SELF · CivilCommentsworst-group accuracy: 69.9 ± 5.2 -> 79.1 ± 2.1Helped
Use early-stop disagreement rather than dropout disagreement (ablation)SELF · MultiNLIworst-group accuracy: 68.7 ± 3.4 -> 70.7 ± 2.5Helped
Use early-stop disagreement rather than dropout disagreement (ablation)SELF · CelebAworst-group accuracy: 85.7 ± 1.6 -> 83.9 ± 0.9Hurt
Use early-stop disagreement rather than dropout disagreement (ablation)SELF · Waterbirdsworst-group accuracy: 92.3 ± 0.5 -> 93.0 ± 0.3Mixed

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