Ming Fan
2021
Chase: A Large-Scale and Pragmatic Chinese Dataset for Cross-Database Context-Dependent Text-to-SQL
Jiaqi Guo
|
Ziliang Si
|
Yu Wang
|
Qian Liu
|
Ming Fan
|
Jian-Guang Lou
|
Zijiang Yang
|
Ting Liu
Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)
The cross-database context-dependent Text-to-SQL (XDTS) problem has attracted considerable attention in recent years due to its wide range of potential applications. However, we identify two biases in existing datasets for XDTS: (1) a high proportion of context-independent questions and (2) a high proportion of easy SQL queries. These biases conceal the major challenges in XDTS to some extent. In this work, we present Chase, a large-scale and pragmatic Chinese dataset for XDTS. It consists of 5,459 coherent question sequences (17,940 questions with their SQL queries annotated) over 280 databases, in which only 35% of questions are context-independent, and 28% of SQL queries are easy. We experiment on Chase with three state-of-the-art XDTS approaches. The best approach only achieves an exact match accuracy of 40% over all questions and 16% over all question sequences, indicating that Chase highlights the challenging problems of XDTS. We believe that XDTS can provide fertile soil for addressing the problems.
2012
A Comparison of Chinese Word Segmentation on News and Microblog Corpora with a Lexicon Based Method
Yuxiang Jia
|
Hongying Zan
|
Ming Fan
|
Zhimin Wang
Proceedings of the Second CIPS-SIGHAN Joint Conference on Chinese Language Processing
Search
Co-authors
- Yuxiang Jia (贾玉祥) 1
- Hongying Zan 1
- Zhimin Wang 1
- Jiaqi Guo 1
- Ziliang Si 1
- show all...