arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.03728cs.CL
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大规模多标签领域分类中的伪标记和负反馈学习

Pseudo Labeling and Negative Feedback Learning for Large-scale Multi-label Domain Classification

Amazon Alexa AI(亚马逊Alexa AI)

Joo-Kyung Kim, Young-Bum Kim

摘要:

在大规模领域分类中,一个话语可以由具有重叠能力的多个领域处理。然而,在实践中,仅为每个训练话语提供有限数量的地面实况域,而知道尽可能多的正确目标标签有助于提高模型性能。在本文中,给定每个训练话语的一个地面真域,我们将始终以最高置信度预测的域作为训练的附加伪标签。为了减少由于不正确的伪标签而导致的预测错误,我们利用具有负系统响应的话语来降低错误预测域的置信度。从智能会话系统的用户话语评估,我们表明,所提出的方法显着提高域分类的性能与假设重排序。

英文摘要:

In large-scale domain classification, an utterance can be handled by multiple domains with overlapped capabilities. However, only a limited number of ground-truth domains are provided for each training utterance in practice while knowing as many as correct target labels is helpful for improving the model performance. In this paper, given one ground-truth domain for each training utterance, we regard domains consistently predicted with the highest confidences as additional pseudo labels for the training. In order to reduce prediction errors due to incorrect pseudo labels, we leverage utterances with negative system responses to decrease the confidences of the incorrectly predicted domains. Evaluating on user utterances from an intelligent conversational system, we show that the proposed approach significantly improves the performance of domain classification with hypothesis reranking.

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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