Diversity-grounded Channel Prototypical Learning for Out-of-Distribution Intent Detection
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913509142429696 |
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| author | Liu, Bo Zhan, Liming Feng, Yujie Lu, Zexin Xie, Chengqiang Xue, Lei Lam, Albert Y. S. Wu, Xiao-Ming |
| author_facet | Liu, Bo Zhan, Liming Feng, Yujie Lu, Zexin Xie, Chengqiang Xue, Lei Lam, Albert Y. S. Wu, Xiao-Ming |
| contents | In the realm of task-oriented dialogue systems, a robust intent detection mechanism must effectively handle malformed utterances encountered in real-world scenarios. This study presents a novel fine-tuning framework for large language models (LLMs) aimed at enhancing in-distribution (ID) intent classification and out-of-distribution (OOD) intent detection, which utilizes semantic matching with prototypes derived from ID class names. By harnessing the highly distinguishable representations of LLMs, we construct semantic prototypes for each ID class using a diversity-grounded prompt tuning approach. We rigorously test our framework in a challenging OOD context, where ID and OOD classes are semantically close yet distinct, referred to as \emph{near} OOD detection. For a thorough assessment, we benchmark our method against the prevalent fine-tuning approaches. The experimental findings reveal that our method demonstrates superior performance in both few-shot ID intent classification and near-OOD intent detection tasks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_11114 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Diversity-grounded Channel Prototypical Learning for Out-of-Distribution Intent Detection Liu, Bo Zhan, Liming Feng, Yujie Lu, Zexin Xie, Chengqiang Xue, Lei Lam, Albert Y. S. Wu, Xiao-Ming Computation and Language Artificial Intelligence In the realm of task-oriented dialogue systems, a robust intent detection mechanism must effectively handle malformed utterances encountered in real-world scenarios. This study presents a novel fine-tuning framework for large language models (LLMs) aimed at enhancing in-distribution (ID) intent classification and out-of-distribution (OOD) intent detection, which utilizes semantic matching with prototypes derived from ID class names. By harnessing the highly distinguishable representations of LLMs, we construct semantic prototypes for each ID class using a diversity-grounded prompt tuning approach. We rigorously test our framework in a challenging OOD context, where ID and OOD classes are semantically close yet distinct, referred to as \emph{near} OOD detection. For a thorough assessment, we benchmark our method against the prevalent fine-tuning approaches. The experimental findings reveal that our method demonstrates superior performance in both few-shot ID intent classification and near-OOD intent detection tasks. |
| title | Diversity-grounded Channel Prototypical Learning for Out-of-Distribution Intent Detection |
| topic | Computation and Language Artificial Intelligence |
| url | https://arxiv.org/abs/2409.11114 |