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

• URL: http://arxiv.org/abs/2003.03728v1
• Date: Sun, 8 Mar 2020 06:00:15 GMT
• Title: Pseudo Labeling and Negative Feedback Learning for Large-scale Multi-label Domain Classification
• Authors: Joo-Kyung Kim and Young-Bum Kim
• Abstract summary: In large-scale domain classification, an utterance can be handled by multiple domains with overlapped capabilities. 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.
• Score: 18.18754040189615
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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.

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