Decoupled Dialogue Modeling and Semantic Parsing for Multi-Turn Text-to-SQL

• URL: http://arxiv.org/abs/2106.02282v1
• Date: Fri, 4 Jun 2021 06:31:39 GMT
• Title: Decoupled Dialogue Modeling and Semantic Parsing for Multi-Turn Text-to-SQL
• Authors: Zhi Chen, Lu Chen Hanqi Li, Ruisheng Cao, Da Ma, Mengyue Wu and Kai Yu
• Abstract summary: We propose a novel decoupled multi-turn Text-to-end framework, where an utterance rewrite model first explicitly solves completion of dialogue context. A dual learning approach is also proposed for the utterance rewrite model to address the data sparsity problem. With just a few rewrite cases, the decoupled method outperforms the released state-of-the-art end-to-end models on both SParC and Co datasets.
• Score: 20.92732277474218
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recently, Text-to-SQL for multi-turn dialogue has attracted great interest. Here, the user input of the current turn is parsed into the corresponding SQL query of the appropriate database, given all previous dialogue history. Current approaches mostly employ end-to-end models and consequently face two challenges. First, dialogue history modeling and Text-to-SQL parsing are implicitly combined, hence it is hard to carry out interpretable analysis and obtain targeted improvement. Second, SQL annotation of multi-turn dialogue is very expensive, leading to training data sparsity. In this paper, we propose a novel decoupled multi-turn Text-to-SQL framework, where an utterance rewrite model first explicitly solves completion of dialogue context, and then a single-turn Text-to-SQL parser follows. A dual learning approach is also proposed for the utterance rewrite model to address the data sparsity problem. Compared with end-to-end approaches, the proposed decoupled method can achieve excellent performance without any annotated in-domain data. With just a few annotated rewrite cases, the decoupled method outperforms the released state-of-the-art end-to-end models on both SParC and CoSQL datasets.

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