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In this paper we introduce the SchemaDB data-set; a collection of relational database schemata in both sql and graph formats. Databases are not commonly shared publicly for reasons of privacy and security, so schemata are not available for…

Databases · Computer Science 2025-05-30 Cody James Christopher , Kristen Moore , David Liebowitz

While most conversational agents are grounded on either free-text or structured knowledge, many knowledge corpora consist of hybrid sources. This paper presents the first conversational agent that supports the full generality of hybrid data…

Computation and Language · Computer Science 2024-03-14 Shicheng Liu , Jialiang Xu , Wesley Tjangnaka , Sina J. Semnani , Chen Jie Yu , Monica S. Lam

Mainstream knowledge management researchers generally agree that knowledge extracted from unstructured data and semi-structured data have become imperative for organizational strategic decision making. In this research, we develop a…

Information Retrieval · Computer Science 2020-07-15 Gerald Onwujekwe , Kweku-Muata Osei-Bryson , Nnatubemugo Ngwum

Most NoSQL systems are schema-on-read: data can be stored without first having to declare a Schema that imposes a structure. This schemaless feature offers flexibility to evolve data-intensive applications when data frequently change.…

Relational databases excel at structured data analysis, but real-world queries increasingly require capabilities beyond standard SQL, such as semantically matching entities across inconsistent names, extracting information not explicitly…

Databases · Computer Science 2026-05-15 Yin Lin , Tianjing Zeng , Zhongjun Ding , Rong Zhu , Bolin Ding , H. V. Jagadish , Jingren Zhou

Unstructured data is pervasive, but analytical queries demand structured representations, creating a significant extraction challenge. Existing methods like RAG lack schema awareness and struggle with cross-document alignment, leading to…

Databases · Computer Science 2025-11-05 Daren Chao , Kaiwen Chen , Naiqing Guan , Nick Koudas

Text-to-SQL bridges the gap between natural language and structured database language, thus allowing non-technical users to easily query databases. Traditional approaches model text-to-SQL as a direct translation task, where a given Natural…

Machine Learning · Computer Science 2025-08-12 Anurag Tripathi , Vaibhav Patle , Abhinav Jain , Ayush Pundir , Sairam Menon , Ajeet Kumar Singh , Dorien Herremans

Large language models (LLMs) have shown promise in table Question Answering (Table QA). However, extending these capabilities to multi-table QA remains challenging due to unreliable schema linking across complex tables. Existing methods…

Artificial Intelligence · Computer Science 2025-11-25 Xixi Wang , Miguel Costa , Jordanka Kovaceva , Shuai Wang , Francisco C. Pereira

The rise of Large Language Models (LLMs) has accelerated the long-standing goal of enabling natural language querying over complex, hybrid databases. Yet, this ambition exposes a dual challenge: reasoning jointly over structured,…

Databases · Computer Science 2025-10-22 Aymane Hassini

Large language models (LLMs) have revolutionized natural language interfaces for databases, particularly in text-to-SQL conversion. However, current approaches often generate unreliable outputs when faced with ambiguity or insufficient…

Databases · Computer Science 2025-01-22 Kaiwen Chen , Yueting Chen , Xiaohui Yu , Nick Koudas

Extracting structured information from text, such as key-value pairs that could augment tabular data, is quite useful in many enterprise use cases. Although large language models (LLMs) have enabled numerous automated pipelines for…

Computation and Language · Computer Science 2025-07-30 Satyananda Kashyap , Sola Shirai , Nandana Mihindukulasooriya , Horst Samulowitz

Various automated testing approaches have been proposed for Database Management Systems (DBMSs). Many such approaches generate pairs of equivalent queries to identify bugs that cause DBMSs to compute incorrect results, and have found…

Software Engineering · Computer Science 2025-05-06 Suyang Zhong , Manuel Rigger

Optimizing the physical data storage and retrieval of data are two key database management problems. In this paper, we propose a language that can express a wide range of physical database layouts, going well beyond the row- and…

Programming Languages · Computer Science 2020-02-07 John K. Feser , Samuel Madden , Nan Tang , Armando Solar-Lezama

Relational database management systems (RDBMSs) are powerful because they are able to optimize and answer queries against any relational database. A natural language interface (NLI) for a database, on the other hand, is tailored to support…

Artificial Intelligence · Computer Science 2018-09-11 Wenlu Wang , Yingtao Tian , Hongyu Xiong , Haixun Wang , Wei-Shinn Ku

Recent advances in text-to-SQL systems have been driven by larger models and improved datasets, yet progress is still limited by the scarcity of high-quality training data. Manual data creation is expensive, and existing synthetic methods…

Machine Learning · Computer Science 2026-01-12 Marko Sterbentz , Kevin Cushing , Cameron Barrie , Kristian J. Hammond

Large language models (LLMs) with memory are computationally universal. However, mainstream LLMs are not taking full advantage of memory, and the designs are heavily influenced by biological brains. Due to their approximate nature and…

Artificial Intelligence · Computer Science 2023-06-08 Chenxu Hu , Jie Fu , Chenzhuang Du , Simian Luo , Junbo Zhao , Hang Zhao

As the demand for querying databases in all areas of life continues to grow, researchers have devoted significant attention to the natural language interface for databases (NLIDB). This paper presents a comprehensive survey of recently…

Databases · Computer Science 2025-09-19 Mengyi Liu , Jianqiu Xu

Many disciplines pose natural-language research questions over large document collections whose answers typically require structured evidence, traditionally obtained by manually designing an annotation schema and exhaustively labeling the…

Computation and Language · Computer Science 2026-04-13 Shahar Levy , Eliya Habba , Reshef Mintz , Barak Raveh , Renana Keydar , Gabriel Stanovsky

Identifying relationships between concepts is a key aspect of scientific knowledge synthesis. Finding these links often requires a researcher to laboriously search through scien- tific papers and databases, as the size of these resources…

Computation and Language · Computer Science 2016-02-12 Stephanie L. Hyland , Theofanis Karaletsos , Gunnar Rätsch

The development of AI for mental health is hindered by a lack of authentic therapy dialogues, due to strict privacy regulations and the fact that clinical sessions were historically rarely recorded. We present an LLM-driven pipeline that…