A BiRGAT Model for Multi-intent Spoken Language Understanding with Hierarchical Semantic Frames

• URL: http://arxiv.org/abs/2402.18258v1
• Date: Wed, 28 Feb 2024 11:39:26 GMT
• Title: A BiRGAT Model for Multi-intent Spoken Language Understanding with Hierarchical Semantic Frames
• Authors: Hongshen Xu, Ruisheng Cao, Su Zhu, Sheng Jiang, Hanchong Zhang, Lu Chen and Kai Yu
• Abstract summary: We first propose a Multi-Intent dataset which is collected from a realistic in-Vehicle dialogue System, called MIVS. The target semantic frame is organized in a 3-layer hierarchical structure to tackle the alignment and assignment problems in multi-intent cases. We devise a BiRGAT model to encode the hierarchy of items, the backbone of which is a dual relational graph attention network.
• Score: 30.200413352223347
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Previous work on spoken language understanding (SLU) mainly focuses on single-intent settings, where each input utterance merely contains one user intent. This configuration significantly limits the surface form of user utterances and the capacity of output semantics. In this work, we first propose a Multi-Intent dataset which is collected from a realistic in-Vehicle dialogue System, called MIVS. The target semantic frame is organized in a 3-layer hierarchical structure to tackle the alignment and assignment problems in multi-intent cases. Accordingly, we devise a BiRGAT model to encode the hierarchy of ontology items, the backbone of which is a dual relational graph attention network. Coupled with the 3-way pointer-generator decoder, our method outperforms traditional sequence labeling and classification-based schemes by a large margin.

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