Research Achievements

PolyCard: A learned cardinality estimator for intersection queries on spatial polygons

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

Journal of Intelligent Information Systems

6, 2025

DOI: 10.1007/s10844-025-00921-z

Vol/No/Pages: Vol. 63 , No. 3 , pp. 873 - 891

SAFE: Sampling-Assisted Fast Learned Cardinality Estimation for Dynamic Spatial Data

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

Proceedings of 35th International Conference on Database and Expert Systems Applications (DEXA 2024)

2024

A Performance Study of One-dimensional Learned Cardinality Estimation

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

International Workshop on Design, Optimization, Languages and Analytical Processing of Big Data (DOLAP)

3, 2022