河又 裕士(カワマタ ユウジ)
- 所属
- システム情報系
- 職名
- 特任助教
- ORCID
- 0000-0003-3951-639X
- URL
- eメール
- ;0&<&2&9&HWS(8Q98:0:'&Q&(Q/5
- 研究分野
ウェブ情報学・サービス情報学 - 研究キーワード
連合学習 因果推論 - 研究課題
連合学習による因果推論・反事実説明技術の開発と国際実データへの応用 2026 -- 2028 河又 裕士 日本学術振興会/若手研究 3,770,000円 - 職歴
2021-10 -- 2025-09 筑波大学筑波大学高等研究院 人工知能科学センター研究員 2025-10 -- (現在) 筑波大学システム情報系 / 筑波大学高等研究院 人工知能科学センター特任助教 - 学歴
2017-04 -- 2021-09 筑波大学 システム情報工学研究科 社会工学専攻博士後期課程 - 取得学位
2021-09 博士(社会工学) 筑波大学 - 論文
- Single-Round Clustered Federated Learning via Data Collaboration Analysis for Non-IID Data
SUGAWARA Sota; KAWAMATA Yuji; TOYODA Akihiro; NAKAYAMA...
Proceedings of International Joint Conferences on Artificial Intelligence (IJCAI-ECAI2026), 2026-08 - A new type of federated clustering: A non-model-sharing approach
KAWAMATA Yuji; KAMIJO Kaoru; KIHIRA Masateru; TOYODA ...
arXiv, 2025-06 - A Reliable Decision Support Framework for SME Default Prediction Using Uncertainty-Aware Bayesian GEV Regression
TERADA Kaito; ABE Keiji; TAKEDA Toshihiko; KAWAMATA Y...
Prceedings of 2025 IEEE International Conference on Big Data (BigData)/pp.2268-2273, 2025-11 - DC-CP: Data Collaboration Conformal Prediction from Model Training to Conformal Prediction in Single-Round Communication While Preserving Privacy
NAKAYAMA Tomoru; KAWAMATA Yuji; IMAKURA Akira; OKADA ...
Prceedings of 2025 IEEE International Conference on Big Data (BigData)/pp.1474-1479, 2025-11 - Estimating covariate-balanced survival curve in distributed data environment using data collaboration quasi-experiment
TOYODA Akihiro; KAWAMATA Yuji; NAKAYAMA Tomoru; IMAKUR...
Scientific Reports/16(1), 2026-01 - Anomaly detection in double-entry bookkeeping data by federated learning system with non-model sharing approach
Mashiko Sota; Kawamata Yuji; Nakayama Tomoru; Sakurai ...
SCIENTIFIC REPORTS/15(1), 2025-11-26 - Estimation of conditional average treatment effects on distributed confidential data
Kawamata Yuji; Motai Ryoki; Okada Yukihiko; IMAKURA A...
Expert Systems with Applications/296(C)/p.129066, 2026-01 - Data collaboration for causal inference from limited medical testing and medication data
NAKAYAMA Tomoru; KAWAMATA Yuji; TOYODA Akihiro; IMAKUR...
Scientific Reports/15(1), 2025-03 - Generating Synthetic Journal-Entry Data Using Variational Autoencoder
MOTAI Ryoki; MASHIKO Sota; KAWAMATA Yuji; SHIN Ryota; ...
Intelligent Systems in Accounting, Finance and Management/32(1), 2025-03 - Anomaly Detection in Double-entry Bookkeeping Data by Federated Learning System with Non-model Sharing Approach
MASHIKO Sota; KAWAMATA Yuji; NAKAYAMA Tomoru; SAKURAI ...
arXiv, 2025-01 - An explainable framework based on counterfactual explanations for multi-class financial distress prediction of small and medium enterprises
ANDO Renon; KAWAMATA Yuji; TAKEDA Toshihiko; OKADA Yu...
Proceedings of 2024 IEEE International Conference on Big Data (BigData)/pp.2269-2274, 2024-12 - 分散機密データを想定した 処置効果の推定手法の開発
河又裕士; 岡田 幸彦
オペレーションズ・リサーチ, 2024-06 - Collaborative causal inference on distributed data
Kawamata Yuji; Motai Ryoki; Okada Yukihiko; Imakura A...
EXPERT SYSTEMS WITH APPLICATIONS/244, 2024-06
- Single-Round Clustered Federated Learning via Data Collaboration Analysis for Non-IID Data
- 会議発表等
- A Reliable Decision Support Framework for SME Default Prediction Using Uncertainty-Aware Bayesian GEV Regression
TERADA Kaito; ABE Keiji; TAKEDA Toshihiko; KAWAMATA Yuji...
Prceedings of 2025 IEEE International Conference on Big Data (BigData)/2025-11 - DC-CP: Data Collaboration Conformal Prediction from Model Training to Conformal Prediction in Single-Round Communication While Preserving Privacy
NAKAYAMA Tomoru; KAWAMATA Yuji; IMAKURA Akira; OKADA Yuk...
Prceedings of 2025 IEEE International Conference on Big Data (BigData)/2025-11
- A Reliable Decision Support Framework for SME Default Prediction Using Uncertainty-Aware Bayesian GEV Regression
- 担当授業科目
2026-10 -- 2027-02 情報理工後期研究発表演習I 筑波大学 2026-10 -- 2027-02 情報理工前期特別研究I 筑波大学 2026-04 -- 2026-05 情報リテラシー(演習) 筑波大学 2026-10 -- 2027-02 情報理工後期特別演習A 筑波大学 2026-10 -- 2027-02 情報理工前期特別研究C 筑波大学 2026-04 -- 2026-08 情報理工前期特別研究I 筑波大学 2026-10 -- 2027-02 情報理工後期特別演習Af 筑波大学 2026-10 -- 2027-02 情報理工後期特別演習Bf 筑波大学 2026-04 -- 2026-08 情報理工前期特別研究Is 筑波大学 2026-04 -- 2026-08 情報理工後期特別研究 筑波大学 さらに表示...
(最終更新日: 2026-02-16)