Publications

CONFERENCE (INTERNATIONAL)
Omni-CityMood: Vision-based Urban Atmosphere Perception from Every Angle: Yuki Kubota (Institute of Science Tokyo), Kota Tsubouchi, Soto Anno (Institute of Science Tokyo), Kaito Ide (Institute of Science Tokyo), Masamichi Shimosaka (Institute of Science Tokyo); The 33rd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2025); December 22, 2025

CONFERENCE (INTERNATIONAL)
A Provable Approach for End-to-End Safe Reinforcement Learning: Akifumi Wachi, Kohei Miyaguchi, Takumi Tanabe, Rei Sato, Youhei Akimoto (University of Tsukuba, RIKEN AIP); The Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 05, 2025

CONFERENCE (INTERNATIONAL)
Improved Regret Bounds for Gaussian Process Upper Confidence Bound in Bayesian Optimization: Shogo Iwazaki; The Thirty-ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 05, 2025

CONFERENCE (INTERNATIONAL)
Gaussian Process Upper Confidence Bound Achieves Nearly-Optimal Regret in Noise-Free Gaussian Process Bandits: Shogo Iwazaki; The Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 04, 2025

CONFERENCE (INTERNATIONAL)
Offline Guarded Safe Reinforcement Learning for Medical Treatment Optimization Strategies: Runze Yan (Emory University), Xun Shen (Tokyo University of Agriculture and Technology), Akifumi Wachi, Sebastien Gros (Norwegian University of Science and Technology), Anni Zhao (Emory University), Xiao Hu (Emory University); The Thirty-Ninth Annual Conference on Neural Information Processing Systems (NeurIPS 2025); December 03, 2025

CONFERENCE (DOMESTIC)
ウェアラブルUWBの時系列CIRを用いた呼吸推定: 芝塚育大 (東京科学大学情報理工学院情報工学系), 藤重凱人 (東京科学大学情報理工学院情報工学系), 坪内孝太, 西山勇毅 (東京科学大学情報理工学院情報工学系), 下坂正倫 (東京科学大学情報理工学院情報工学系); 情報処理学会ユビキタスコンピューティングシステム研究会 (IPSJ SIGUBI); November 19, 2025

CONFERENCE (INTERNATIONAL)
Target and Non-target Category Classification from GPS and Check-in Data: Ryo Shirai (The University of Osaka), Ryo Imai, Daichi Amagata (The University of Osaka); 19th International Symposium on Spatial and Temporal Data (SSTD 2025); October 14, 2025

JOURNAL (INTERNATIONAL)
Early crowd forecasting away from stations by geographically complemented regression using transit search and mobility logs: Soto Anno (Institute of Science Tokyo), Kota Tsubouchi, Masamichi Shimosaka (Institute of Science Tokyo); Journal of Big Data; September 01, 2025

CONFERENCE (DOMESTIC)
SCAdapter: A Content-Style Disentanglement Approach for Diffusion-Based Style Transfer: Luan Thanh Trinh, 土井賢治, 長内淳樹; 第28回画像の認識・理解シンポジウム MIRU2025 (MIRU2025); July 30, 2025

JOURNAL (DOMESTIC)
新聞と掲示板データを用いた日経平均VI予測モデルの提案と評価: 細川蓮 (奈良先端科学技術大学院大学), 上田健太郎 (奈良先端科学技術大学院大学), 諏訪博彦 (奈良先端科学技術大学院大学), 小川祐樹 (東京都市大学), 梅原英一 (新潟国際情報経営大学), 山下達雄, 坪内孝太, 服部宏充 (立命館大学), 安本慶一 (奈良先端科学技術大学院大学); 人工知能学会論文誌; July 01, 2025

JOURNAL (INTERNATIONAL)
A-UVI: GNSS-Assisted EO-based UV Index Estimation Method for Individual-level Precise UV Exposure Assessment: Yuuki Nishiyama (The University of Tokyo), Subaru Atsumi (The University of Tokyo), Kota Tsubouchi, Kaoru Sezaki (The University of Tokyo); The Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT); June 25, 2025

CONFERENCE (INTERNATIONAL)
Approximate Reverse k-Ranks Queries in High Dimensions: Daichi Amagata (Osaka University), Kazuyoshi Aoyama (Osaka University), Keito Kido (Osaka University), Sumio Fujita; 37th International Conference on Scalable Scientific Data Management (SSDBM 2025); June 22, 2025

CONFERENCE (INTERNATIONAL)
How to Mine Potentially Popular Items? A Reverse MIPS-based Approach: Daichi Amagata (Osaka University), Kazuyoshi Aoyama (Osaka University), Keito Kido (Osaka University), Sumio Fujita; 37th International Conference on Scalable Scientific Data Management (SSDBM 2025); June 22, 2025

OTHERS (INTERNATIONAL)
FedDuA: Doubly Adaptive Federated Learning: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; arXiv.org (arXiv); May 19, 2025

WORKSHOP (DOMESTIC)
夜間景観画像の雰囲気評価定量予測: 早川季寿 (東京科学大学), 井手海翔 (東京科学大学), 安納爽響 (東京科学大学), 坪内孝太, 下坂正倫 (東京科学大学); 情報処理学会ユビキタスコンピューティングシステム研究会 (IPSJ SIGUBI); May 15, 2025

WORKSHOP (INTERNATIONAL)
Accelerating Differentially Private Federated Learning via Adaptive Extrapolation: Shokichi Takakura, Seng Pei Liew, Satoshi Hasegawa; Will Synthetic Data Finally Solve the Data Access Problem? Workshop at ICLR 2025 (ICLR 2025); April 28, 2025

CONFERENCE (INTERNATIONAL)
Search Query Embeddings via User-behavior-driven Contrastive Learning: Sosuke Nishikawa, Jun Hirako, Nobuhiro Kaji, Koki Watanabe, Hiroki Asano, Souta Yamashiro, Shumpei Sano; 2025 Annual Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics (NAACL 2025); April 28, 2025

OTHERS (INTERNATIONAL)
Approximate Reverse k-Ranks Queries in High Dimensions: Daichi Amagata (Osaka University), Kazuyoshi Aoyama (Osaka University), Keito Kido (Osaka University), Sumio Fujita; arXiv.org (arXiv); April 18, 2025

OTHERS (INTERNATIONAL)
How to Mine Potentially Popular Items? A Reverse MIPS-based Approach: Daichi Amagata (Osaka University), Kazuyoshi Aoyama (Osaka University), Keito Kido (Osaka University), Sumio Fujita; arXiv.org (arXiv); April 18, 2025

CONFERENCE (INTERNATIONAL)
The Power of Periodicity: Exploiting Periodic UWB CIRs for Robust Activity Recognition with Attention-aware Multi-level Wavelet: Han Lin (Tokyo Institute of Technology), Atsushi Nomura (Tokyo Institute of Technology), Kota Tsubouchi, Nobuhiko Nishio (Ritsumeikan University), Masamichi Shimosaka (Tokyo Institute of Technology); The 23rd International Conference on Pervasive Computing and Communications (PerCom 2025); April 01, 2025