Publications

Reqo: A Comprehensive Learning-Based Cost Model for Robust and Explainable Query Optimization

Baoming Chang, Amin Kamali, Verena Kantere

Proceedings of the ACM on Management of Data (PACMMOD) · 2026

SIGMOD 2026 · Volume 4, Issue 1, Article 75, pp. 1–27

• Paper: Reqo: A Comprehensive Learning-Based Cost Model for Robust and Explainable Query Optimization
• DOI: Reqo: A Comprehensive Learning-Based Cost Model for Robust and Explainable Query Optimization

A Novel Technique for Query Plan Representation Based on Graph Neural Nets

Baoming Chang, Amin Kamali, Verena Kantere

International Conference on Big Data Analytics and Knowledge Discovery (DaWaK) · 2024

Lecture Notes in Computer Science, Volume 14912, pp. 299–314

• Paper: A Novel Technique for Query Plan Representation Based on Graph Neural Nets
• DOI: A Novel Technique for Query Plan Representation Based on Graph Neural Nets

A Robust and Explainable Query Optimization Cost Model Based on Bidirectional Graph Neural Networks

Baoming Chang

Master’s thesis, University of Ottawa · 2024

• Paper: A Robust and Explainable Query Optimization Cost Model Based on Bidirectional Graph Neural Networks
• DOI: A Robust and Explainable Query Optimization Cost Model Based on Bidirectional Graph Neural Networks