Papers › OutFlip: Generating Out-of-Domain Samples for Unknown Intent Detection with Natural...

OutFlip: Generating Out-of-Domain Samples for Unknown Intent Detection with Natural Language Attack

12 May 2021arXiv:2105.05601archive 2025-07-28

DongHyun Choi, Myeong Cheol Shin, EungGyun Kim, Dong Ryeol Shin

Out-of-domain (OOD) input detection is vital in a task-oriented dialogue system since the acceptance of unsupported inputs could lead to an incorrect response of the system. This paper proposes OutFlip, a method to generate out-of-domain samples using only in-domain training dataset automatically. A white-box natural language attack method HotFlip is revised to generate out-of-domain samples instead of adversarial examples. Our evaluation results showed that integrating OutFlip-generated out-of-domain samples into the training dataset could significantly improve an intent classification model's out-of-domain detection performance.

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Intent ClassificationIntent Detectionintent-classification

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