Research Achievements

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

Fast, exact, and parallel-friendly outlier detection algorithms with proximity graph in metric spaces

Daichi Amagata, Takahiro Hara, Makoto Onizuka

VLDB

2022

Vol/No/Pages: Vol. 31 , pp. 797 -- 821

Fast and Exact Outlier Detection in Metric Spaces: A Proximity Graph-based Approach

Daichi Amagata, Makoto Onizuka, Takahiro Hara

ACM SIGMOD

6, 2021

A Children-oriented Re-ranking Method for Web Search Engines

Mayu Iwata, Yuki Arase, Takahiro Hara, Shojiro Nishio

In Proceedings of International Conference on Web Information System Engineering

12, 2010

Vol/No/Pages: pp. 225 -- 239

Mining People’s Trips from Large Scale Geo-Tagged Photos

Yuki Arase, Xing Xie, Takahiro Hara, Shojiro Nishio

In Proceedings of Association for Computing Machinery International Conference on Multimedia

10, 2010

Vol/No/Pages: pp. 133 -- 142

A Game based Approach to Assign Geographical Relevance to Web Images

Yuki Arase, Xing Xie, Manni Duan, Takahiro Hara, Shojiro Nishio

In Proceedings of International World Wide Web Conference

4, 2009

Vol/No/Pages: pp. 811 -- 820

OPA Browser: A Web Browser for Cellular Phone Users

Yuki Arase, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

In Proceedings of Association for Computing Machinery Symposium on User Interface Software and Technology

10, 2007

Vol/No/Pages: pp. 71 -- 80