Self-augmented Data Selection for Few-shot Dialogue Generation

• URL: http://arxiv.org/abs/2205.09661v1
• Date: Thu, 19 May 2022 16:25:50 GMT
• Title: Self-augmented Data Selection for Few-shot Dialogue Generation
• Authors: Wanyu Du, Hanjie Chen, Yangfeng Ji
• Abstract summary: We adopt the self-training framework to deal with the few-shot MR-to-Text generation problem. We propose a novel data selection strategy to select the data that our generation model is most uncertain about.
• Score: 18.794770678708637
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The natural language generation (NLG) module in task-oriented dialogue systems translates structured meaning representations (MRs) into text responses, which has a great impact on users' experience as the human-machine interaction interface. However, in practice, developers often only have a few well-annotated data and confront a high data collection cost to build the NLG module. In this work, we adopt the self-training framework to deal with the few-shot MR-to-Text generation problem. We leverage the pre-trained language model to self-augment many pseudo-labeled data. To prevent the gradual drift from target data distribution to noisy augmented data distribution, we propose a novel data selection strategy to select the data that our generation model is most uncertain about. Compared with existing data selection methods, our method is: (1) parameter-efficient, which does not require training any additional neural models, (2) computation-efficient, which only needs to apply several stochastic forward passes of the model to estimate the uncertainty. We conduct empirical experiments on two benchmark datasets: FewShotWOZ and FewShotSGD, and show that our proposed framework consistently outperforms other baselines in terms of BLEU and ERR.

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