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MASKER: Masked Keyword Regularization for Reliable Text Classification

AAAI 2021 · Label-efficient and robust learning › OOD and anomaly detection · approach: Robust fine-tuning for OOD generalization · 28 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add MASKER to BERTBERT · 20 Newsgroups → SST-2 OODAUROC: 87.0 -> 98.6Helped
Add MASKER to BERTBERT · Amazon → Fine Food OODAUROC: 78.5 -> 84.9Helped
Add MASKER to BERTBERT · Fine Food → SST-2accuracy: 67.6 -> 80.0Helped
Add MASKER to BERTBERT · Fine Food → IMDBaccuracy: 77.3 -> 85.6Helped
Use attention-selected keywords rather than random or frequency-selected keywords (ablation)MASKER · Amazon 50 class reviews (25% ID classes)AUROC: 80.52\stdv{0.72}, 81.32\stdv{0.78}, 83.33\stdv{0.44} -> 85.48\stdv{0.54}Helped
Add MKR to attention-keyword MASKER (ablation)MASKER with attention keywords · Amazon 50 class reviews (25% ID classes)AUROC: 82.60\stdv{0.51} -> 85.48\stdv{0.54}Helped
Add MER to attention-keyword MASKER (ablation)MASKER with attention keywords · Amazon 50 class reviews (25% ID classes)AUROC: 83.33\stdv{0.44} -> 85.48\stdv{0.54}Helped
Replace MKR reconstruction with classification loss on keyword-masked documents (ablation)MASKER · Not specifiedperformanceHurt
Regularize attention weights directly to be uniform (ablation)Vanilla models · Classification and OOD detectionperformanceHurt

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