Knowledge Acquisition System Laboratory (Kato Laboratory) is especially interested in the research field of Information Retrieval, mainly focusing on the following fields: retrieval models and ranking, learning to rank, search intent estimation, knowledge base development, knowledge base applications, search behavior analysis, search user models, recommendation systems, and offline/online evaluation.

News

News

Ito-san (M1) received IPSJ Yamashita SIG Research Award

Takumi Ito (M1) received the IPSJ Yamashita SIG Research Award for the DEIM 2024 presentation entitled “ドメイン特徴に基づくランキング学習モデルのドメイン適応” 👏👏👏 IPSJ Yamashita SIG Research Award (FY2024) – IPSJ IPSJ Yamashita SIG Research AwardThis award is given to the presenter of excellent papers presented at research forums and symposia supported by IPSJ. https://www.ipsj.or.jp/award/yamashita.html

Research

CIKM 2024 Paper Accepted

Our paper “Over-penalization for Extra Information in Neural IR Models”, authored by Kota Usuha, Makoto P. Kato, and Sumio Fujita, has been accepted at CIKM 2024 as a short paper.

News

KASYS Won DEIM 2024 Awards

Nao Tagai (M2), Yuto Nakachi (M2), and Atsuki Maruta (D2) won the student presentation award, and Atsuki Maruta, Nao Tagai, and Makoto P. Kato together won the best poster presentation award at DEIM 2024 (a domestic workshop)! 👏👏👏　 DEIM 2024（第16回データ工学と情報マネジメントに関するフォーラム）

Research

WebSci 2023 Paper Accepted

Our paper “What Web Search Behaviors Lead to Online Purchase Satisfaction?”, authored by Yuki Yanagida, Makoto P. Kato, Yuka Kawada, Takehiro Yamamoto, Hiroaki Ohshima and Sumio Fujita, has been accepted at WebSci 2023 as a full paper.

Research

ECIR 2023 Paper Accepted

Our paper “Theoretical Analysis on the Efficiency of Interleaved Comparisons”, authored by Kojiro Iizuka, Hajime Morita and Makoto P. Kato, has been accepted at ECIR 2023 as a full paper.

Research

IPSJ TOD Journal Paper (Vol. 15, No. 1) Accepted

The following paper has been accepted at IPSJ TOD Journal (Vol. 15, No. 1):

Research

DBSJ Data Driven Studies (Vol. 1) Papers Accepted

The following paper has been accepted at DBSJ Data Driven Studies (Vol. 1): 中野優, 加藤誠: 被引用統計データのセル特定データセットの構築柳田雄輝，加藤誠，河田友香，山本岳洋，大島裕明，藤田澄男: 検索行動に基づく購買満足度の関係分析

Research

ICADL 2022 Papers Accepted

Our papers “Can a Machine Reading Comprehension Model Improve Ad-hoc Document Retrieval?”, authored by Kota Usuha, Makoto P. Kato, and Sumio Fujita, and “Active Learning for Efficient Partial Improvement of Learning to Rank”, authored by Koki Shibata and Makoto P. Kato, have been accepted at ICADL 2022 as short papers.