Bowen Dong
2020
Meta-Information Guided Meta-Learning for Few-Shot Relation Classification
Bowen Dong
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Yuan Yao
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Ruobing Xie
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Tianyu Gao
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Xu Han
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Zhiyuan Liu
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Fen Lin
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Leyu Lin
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Maosong Sun
Proceedings of the 28th International Conference on Computational Linguistics
Few-shot classification requires classifiers to adapt to new classes with only a few training instances. State-of-the-art meta-learning approaches such as MAML learn how to initialize and fast adapt parameters from limited instances, which have shown promising results in few-shot classification. However, existing meta-learning models solely rely on implicit instance-based statistics, and thus suffer from instance unreliability and weak interpretability. To solve this problem, we propose a novel meta-information guided meta-learning (MIML) framework, where semantic concepts of classes provide strong guidance for meta-learning in both initialization and adaptation. In effect, our model can establish connections between instance-based information and semantic-based information, which enables more effective initialization and faster adaptation. Comprehensive experimental results on few-shot relation classification demonstrate the effectiveness of the proposed framework. Notably, MIML achieves comparable or superior performance to humans with only one shot on FewRel evaluation.
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Co-authors
- Yuan Yao 1
- Ruobing Xie 1
- Tianyu Gao 1
- Xu Han 1
- Zhiyuan Liu 1
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