Research Achievements

Sublime: Selecting Subgraph Matching Algorithms via Machine Learning

Genryu Kuraya, Konstantinos Skitsas, Davide Mottin, Panagiotis Karras, Daichi Amagata, Yuya Sasaki

Proceedings of the ACM on Management of Data

5, 2026

Vol/No/Pages: Vol. 4 , No. 3 , pp. 1-25

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

Space Filling Approach for Distributed Processing of Top-k Dominating Queries

Daichi Amagata, Takahiro Hara, Makoto Onizuka

IEEE Trans. Knowl. Data Eng.

2018

Vol/No/Pages: Vol. 30(6) , pp. 1150 -- 1163