arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.00136cs.CLcs.LG
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利用半监督学习改进对话中断检测

Improving Dialogue Breakdown Detection with Semi-Supervised Learning

University of Toronto(多伦多大学);Vector Institute(矢量研究所);Google Research(谷歌研究院)

Nathan Ng, Marzyeh Ghassemi, Narendran Thangarajan, Jiacheng Pan, Qi Guo

摘要:

建立用户对对话代理的信任需要流畅一致的对话交流。然而,代理人可以很容易地失去会话上下文,并产生不相关的话语。这些情况被称为对话中断,其中代理话语阻止用户继续对话。建立检测对话中断的系统可以让代理适当地恢复或完全避免中断。在本文中,我们研究了使用半监督学习方法来改进对话故障检测,包括在Reddit数据集上进行持续的预训练和基于流形的数据增强方法。我们证明了这些方法的有效性对话故障检测挑战(DBDC)英语共享任务。我们向2020年DBDC 5提交的共享任务排名第一,超过基线和其他提交的准确率超过12%。在2019年DBDC 4数据的消融中,我们的半监督学习方法将基线BERT模型的性能提高了2\%的准确度。这些方法通常适用于任何对话任务,并提供了一种简单的方法来提高模型的性能。

英文摘要:

Building user trust in dialogue agents requires smooth and consistent dialogue exchanges. However, agents can easily lose conversational context and generate irrelevant utterances. These situations are called dialogue breakdown, where agent utterances prevent users from continuing the conversation. Building systems to detect dialogue breakdown allows agents to recover appropriately or avoid breakdown entirely. In this paper we investigate the use of semi-supervised learning methods to improve dialogue breakdown detection, including continued pre-training on the Reddit dataset and a manifold-based data augmentation method. We demonstrate the effectiveness of these methods on the Dialogue Breakdown Detection Challenge (DBDC) English shared task. Our submissions to the 2020 DBDC5 shared task place first, beating baselines and other submissions by over 12\% accuracy. In ablations on DBDC4 data from 2019, our semi-supervised learning methods improve the performance of a baseline BERT model by 2\% accuracy. These methods are applicable generally to any dialogue task and provide a simple way to improve model performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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