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Tuning Language Models as Training Data Generators for Augmentation-Enhanced Few-Shot Learning

ICML 2023 · Label-efficient and robust learning › Zero-/few-shot and meta-learning · approach: Fine-tuning strategies for few-shot · 19 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use FewGen augmentation rather than the strongest no-augmentation method, LM-BFF (Auto)Few-shot classification on GLUE · GLUE seven-task averageaverage score: 65.8 -> 72.8Helped
Use FewGen augmentation rather than GPT3MixFew-shot classification on GLUE · GLUE seven-task averageaverage score: 69.2 -> 72.8Helped
Use FewGen augmentation rather than back translationFew-shot classification on GLUE · GLUE seven-task averageaverage score: 60.6 -> 72.8Helped
Add meta-weighted generator tuning instead of standard maximum likelihood generator tuning (ablation)FewGen generator · GLUE classification tasksclassification performance: 74.9 -> 75.7 (MNLI-m)Helped
Add meta-weighted generator tuning instead of directly combining generative and discriminative losses (ablation)FewGen generator · GLUE classification tasksclassification performance: 74.6 -> 75.7 (MNLI-m)Helped
Add label smoothing during synthetic-data classifier fine-tuning (ablation)FewGen classifier · MNLIaccuracy: 75.0 -> 75.7No clear effect
Add temporal ensembling during synthetic-data classifier fine-tuning (ablation)FewGen classifier · MNLIaccuracy: 72.2 -> 75.7Helped
Use the two-step procedure: train on few-shot data, then fine-tune on generated data, instead of joint fine-tuning (ablation)FewGen classifier · MNLIaccuracy: 68.9 -> 75.7Helped
Use meta-weighted generator objective rather than standard language modeling objective (ablation)FewGen generator · MNLIgenerated data accuracy: 69.4 -> 72.3Helped
Use meta-weighted generator objective rather than directly combining generative and discriminative losses (ablation)FewGen generator · MNLIgenerated data accuracy: 70.2 -> 72.3Helped

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