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Conventional text-to-SQL parsers are not good at synthesizing complex SQL queries that involve multiple tables or columns, due to the challenges inherent in identifying the correct schema items and performing accurate alignment between…

计算与语言 · 计算机科学 2024-03-18 Yangjun Wu , Han Wang

Text-to-SQL parsing tackles the problem of mapping natural language questions to executable SQL queries. In practice, text-to-SQL parsers often encounter various challenging scenarios, requiring them to be generalizable and robust. While…

计算与语言 · 计算机科学 2022-10-25 Chang Gao , Bowen Li , Wenxuan Zhang , Wai Lam , Binhua Li , Fei Huang , Luo Si , Yongbin Li

The generalizability to new databases is of vital importance to Text-to-SQL systems which aim to parse human utterances into SQL statements. Existing works achieve this goal by leveraging the exact matching method to identify the lexical…

计算与语言 · 计算机科学 2022-08-09 Aiwei Liu , Xuming Hu , Li Lin , Lijie Wen

The rise of Large Language Models (LLMs) has significantly advanced Text-to-SQL (NL2SQL) systems, yet evaluating the semantic equivalence of generated SQL remains a challenge, especially given ambiguous user queries and multiple valid SQL…

计算与语言 · 计算机科学 2025-06-12 Qingyun Zeng , Simin Ma , Arash Niknafs , Ashish Basran , Carol Szabo

This study delves into the capabilities and limitations of Large Language Models (LLMs) in the challenging domain of conditional question-answering. Utilizing the Conditional Question Answering (CQA) dataset and focusing on generative…

计算与语言 · 计算机科学 2023-12-05 Syed-Amad Hussain , Parag Pravin Dakle , SaiKrishna Rallabandi , Preethi Raghavan

Knowledge Base Question Answering (KBQA) challenges models to bridge the gap between natural language and strict knowledge graph schemas by generating executable logical forms. While Large Language Models (LLMs) have advanced this field,…

计算与语言 · 计算机科学 2026-01-12 Xin Sun , Zhongqi Chen , Xing Zheng , Qiang Liu , Shu Wu , Bowen Song , Zilei Wang , Weiqiang Wang , Liang Wang

Knowledge Graph Question Answering (KGQA) systems are based on machine learning algorithms, requiring thousands of question-answer pairs as training examples or natural language processing pipelines that need module fine-tuning. In this…

Parsing natural language to corresponding SQL (NL2SQL) with data driven approaches like deep neural networks attracts much attention in recent years. Existing NL2SQL datasets assume that condition values should appear exactly in natural…

数据库 · 计算机科学 2020-06-12 Ningyuan Sun , Xuefeng Yang , Yunfeng Liu

Due to the concise and structured nature of tables, the knowledge contained therein may be incomplete or missing, posing a significant challenge for table question answering (TableQA) and data analysis systems. Most existing datasets either…

计算与语言 · 计算机科学 2024-05-15 Mengkang Hu , Haoyu Dong , Ping Luo , Shi Han , Dongmei Zhang

Discrete reasoning over table-text documents (e.g., financial reports) gains increasing attention in recent two years. Existing works mostly simplify this challenge by manually selecting and transforming document pages to structured tables…

计算与语言 · 计算机科学 2024-02-23 Fengbin Zhu , Chao Wang , Fuli Feng , Zifeng Ren , Moxin Li , Tat-Seng Chua

Previous text-to-SQL datasets and systems have primarily focused on user questions with clear intentions that can be answered. However, real user questions can often be ambiguous with multiple interpretations or unanswerable due to a lack…

Context-dependent text-to-SQL is the task of translating multi-turn questions into database-related SQL queries. Existing methods typically focus on making full use of history context or previously predicted SQL for currently SQL parsing,…

计算与语言 · 计算机科学 2023-01-31 Dongling Xiao , Linzheng Chai , Qian-Wen Zhang , Zhao Yan , Zhoujun Li , Yunbo Cao

Question Answering (QA) is a widely-used framework for developing and evaluating an intelligent machine. In this light, QA on Electronic Health Records (EHR), namely EHR QA, can work as a crucial milestone towards developing an intelligent…

数据库 · 计算机科学 2021-08-03 Junwoo Park , Youngwoo Cho , Haneol Lee , Jaegul Choo , Edward Choi

LLM-based agents for text-to-SQL often struggle with latency-performance trade-off, where performance improvements come at the cost of latency or vice versa. We reformulate text-to-SQL generation within the lens of software test coverage…

人工智能 · 计算机科学 2026-04-28 Tanmay Parekh , Ella Hofmann-Coyle , Shuyi Wang , Sachith Sri Ram Kothur , Srivas Prasad , Yunmo Chen

Conversational question answering (ConvQA) tackles sequential information needs where contexts in follow-up questions are left implicit. Current ConvQA systems operate over homogeneous sources of information: either a knowledge base (KB),…

信息检索 · 计算机科学 2023-07-03 Philipp Christmann , Rishiraj Saha Roy , Gerhard Weikum

While recent advances in large language models have significantly improved Text-to-SQL and table question answering systems, most existing approaches assume that all query-relevant information is explicitly represented in structured…

数据库 · 计算机科学 2026-04-06 Nima Shahbazi , Seiji Maekawa , Nikita Bhutani , Estevam Hruschka

Most recent research on Text-to-SQL semantic parsing relies on either parser itself or simple heuristic based approach to understand natural language query (NLQ). When synthesizing a SQL query, there is no explicit semantic information of…

计算与语言 · 计算机科学 2022-09-30 Jun Wang , Patrick Ng , Alexander Hanbo Li , Jiarong Jiang , Zhiguo Wang , Ramesh Nallapati , Bing Xiang , Sudipta Sengupta

A conventional approach to entity linking is to first find mentions in a given document and then infer their underlying entities in the knowledge base. A well-known limitation of this approach is that it requires finding mentions without…

计算与语言 · 计算机科学 2022-03-09 Wenzheng Zhang , Wenyue Hua , Karl Stratos

Structured queries expressed in languages (such as SQL, SPARQL, or XQuery) offer a convenient and explicit way for users to express their information needs for a number of tasks. In this work, we present an approach to answer these directly…

计算与语言 · 计算机科学 2019-06-14 Paul Groth , Antony Scerri , Ron Daniel, , Bradley P. Allen

Recently, there has been increasing interest in synthesizing data to improve downstream text-to-SQL tasks. In this paper, we first examined the existing synthesized datasets and discovered that state-of-the-art text-to-SQL algorithms did…