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Towards Complex Text-to-SQL in Cross-Domain Database with Intermediate Representation

Open access
Guo, Jiaqi, Zhan, Zecheng, Gao, Yan, Xiao, Yan, Lou, Jian-Guang, Liu, Ting, Zhang, Dongmei·2019·Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics

Abstract

We present a neural approach called IRNet for complex and cross-domain Text-to-SQL.IR-Net aims to address two challenges: 1) the mismatch between intents expressed in natural language (NL) and the implementation details in SQL; 2) the challenge in predicting columns caused by the large number of outof-domain words.Instead of end-to-end synthesizing a SQL query, IRNet decomposes the synthesis process into three phases.In the first phase, IRNet performs a schema linking over a question and a database schema.Then, IRNet adopts a grammar-based neural model to synthesize a SemQL query which is an intermediate representation that we design to bridge NL and SQL.Finally, IRNet deterministically infers a SQL query from the synthesized SemQL query with domain knowledge.On the challenging Text-to-SQL benchmark Spider, IRNet achieves 46.7% accuracy, obtaining 19.5% absolute improvement over previous state-of-the-art approaches.At the time of writing, IRNet achieves the first position on the Spider leaderboard. * Equal Contributions. Work done during an internship at MSRA.NL: Show the names of students who have a grade higher than 5 and have at least 2 friends. SQL: SELECT T1.name FROM friend AS T1 JOIN highschooler AS T2ON T1.student_id = T2.idWHERE T2

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Metadata

Authors
Guo, J., Zhan, Z., Gao, Y., Xiao, Y., Lou, J.-G., Liu, T., & Zhang, D.
Venue
Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics
Published
2019
Pages
4524-4535
OpenAlex
W2945102109
Cited by
406
References
52
FWCI
18.53
Type
conference paper
Language
en
Open access
hybrid

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Guo, J., Zhan, Z., Gao, Y., Xiao, Y., Lou, J.-G., Liu, T., & Zhang, D. (2019). Towards Complex Text-to-SQL in Cross-Domain Database with Intermediate Representation. Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics. https://doi.org/10.18653/v1/p19-1444

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