Building models of natural language processing (NLP) is challenging in low-resource scenarios where only limited data are available. Optimization-based meta-learning algorithms achieve promising results in low-resource scenarios by adapting a well-generalized model initialization to handle new tasks. Nonetheless, these approaches suffer from the memorization overfitting issue, where the model tends to memorize the meta-training tasks while ignoring support sets when adapting to new tasks. To address this issue, we propose a memory imitation meta-learning (MemIML) method that enhances the model's reliance on support sets for task adaptation. Specifically, we introduce a task-specific memory module to store support set information and construct an imitation module to force query sets to imitate the behaviors of some representative support-set samples stored in the memory. A theoretical analysis is provided to prove the effectiveness of our method, and empirical results also demonstrate that our method outperforms competitive baselines on both text classification and generation tasks.

文章提出了一种记忆模仿元学习方法，利用任务特定的记忆模块存储支持集信息，并构建模仿模块来强制查询集模仿存储在内存中的某些代表性支持集样本的行为，以提高模型对支持集的利用，进而在文本分类和生成任务中取得了优异的性能。

通过记忆模仿提升低资源文本分类和生成的元学习