Query optimization lies at the core of database systems and learning-based query optimization attracts more and more attention because AI techniques are expected to bring new opportunities to further improve the task. As is generally believed, data preparation plays an important role in machine learning tasks, and this may also apply to learning-based query optimization. However, it is noted that …
Supervisors: Xiao Li, Zoi Kaoudi
Semester: Spring 2026
Tags: data preparation, query optimization, machine learning, database

Query optimization is crucial for any data management system to achieve good performance. Recent advancements in AI have led academia and industry to investigate learning-based techniques in query optimization. In particular, many works propose replacing the cost model used during plan enumeration with a machine learning model (typically a regression model) that estimates the runtime of a query …
Supervisors: Zoi Kaoudi
Semester: Fall 2025
Tags: machine learning, database, query optimization, ranking