Publications

JOURNAL (INTERNATIONAL)
Predicting Individual Irregular Mobility via Web Search-Driven Bipartite Graph Neural Networks: Jiawei Xue (Purdue University), Takahiro Yabe (Massachusetts Institute of Technology), Kota Tsubouchi, Jianzhu Ma (Tsinghua University), Satish V. Ukkusuri (Purdue University); IEEE Transactions on Knowledge and Data Engineering (IEEE TKDE); November 21, 2024

CONFERENCE (INTERNATIONAL)
Deep Learning-Based Compressed Sensing for Mobile Device-Derived Sensor Data: Liqiang Xu (The University of Tokyo), Yuuki Nishiyama (The University of Tokyo), Kota Tsubouchi, Kaoru Sezaki (The University of Tokyo); The 33rd ACM International Conference on Information and Knowledge Management (CIKM 2024); October 24, 2024

OTHERS (INTERNATIONAL)
Congestion Forecast for Trains with Railroad-Graph-based Semi-Supervised Learning using Sparse Passenger Reports: Soto Anno (Tokyo Institute of Technology), Kota Tsubouchi, Masamichi Shimosaka (Tokyo Institute of Technology); arXiv.org (arXiv); October 23, 2024

CONFERENCE (INTERNATIONAL)
Improving Coverage and Accuracy in Visible Light Positioning through Ceiling Reflection Modeling: Shota Shimada, Hiroaki Murakami (The University of Tokyo), Ryo Tabata (Hokkaido University), Kota Tsubouchi, Takuya Sasatani (The University of Tokyo), Yoshihiro Kawahara (The University of Tokyo), Masanori Sugimoto (Hokkaido University); The 14th International Conference on Indoor Positioning and Indoor Navigation (IPIN 2024); October 15, 2024

JOURNAL (INTERNATIONAL)
Enhancing human mobility research with open and standardized datasets: Takahiro Yabe (New York University), Massimiliano Luca (Fondazione Bruno Kessler), Kota Tsubouchi, Bruno Lepri (Fondazione Bruno Kessler), Marta C. Gonzalez (University of California), Esteban Moro (Northeastern University); Nature Computational Science (Nat. Comput. Sci.); July 03, 2024

JOURNAL (INTERNATIONAL)
Forecasting Lifespan of Crowded Events With Acoustic Synthesis-Inspired Segmental Long Short-Term Memory: Soto Anno (Tokyo Institute of Technology), Kota Tsubouchi, Masamichi Shimosaka (Tokyo Institute of Technology); IEEE Access; June 25, 2024

CONFERENCE (INTERNATIONAL)
Towards Estimating UV Index with a Smartphone Utilizing GNSS Signals as a Point Cloud: Subaru Atsumi (The University of Tokyo), Riku Ishioka (The University of Tokyo), Kota Tsubouchi, Yuuki Nishiyama (The University of Tokyo), Kaoru Sezaki (The University of Tokyo); The 22nd ACM International Conference on Mobile Systems, Applications, and Services (Mobisys 2024); June 19, 2024

WORKSHOP (DOMESTIC)
Exploring Passive Activity Recognition using Multi-shot UWB CIRs: Han Lin (Tokyo Institute of Technology), Atsushi Nomura (Tokyo Institute of Technology), Kota Tsubouchi, Nobuhiko Nishio (Ritsumeikan University), Masamichi Shimosaka (Tokyo Institute of Technology); 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); June 05, 2024

WORKSHOP (DOMESTIC)
常時装着型イヤラブルデバイス利用環境における音声通知タイミング最適化に向けた基礎検討: 伊藤愛香 (東京大学), 坪内孝太, 西尾信彦 (立命館大学), 下坂正倫 (東京工業大学), 田谷昭仁 (東京大学), 瀬崎薫 (東京大学), 西山勇毅 (東京大学); 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); June 05, 2024

WORKSHOP (INTERNATIONAL)
ChimeraTL: Transfer Learning in DBMS with Fewer Samples: Tatsuhiro Nakamori (Keio University), Shohei Matsuura, Takashi Miyazaki, Sho Nakazono, Taiki Sato, Takashi Hoshino (Cybozu Labs), Hideyuki Kawashima (Keio University); 3rd International Workshop on Databases and Machine Learning in Conjunction with ICDE 2024 (DBML 2024); May 12, 2024

JOURNAL (INTERNATIONAL)
YJMob100K: City-scale and longitudinal dataset of anonymized human mobility trajectories: Takahiro Yabe (New York University), Kota Tsubouchi, Toru Shimizu, Yoshihide Sekimoto (The University of Tokyo), Kaoru Sezaki (The University of Tokyo), Esteban Moro (Massachusetts Institute of Technology), Alex Pentland (Massachusetts Institute of Technology); Scientific Data (Sci. Data); April 23, 2024

CONFERENCE (INTERNATIONAL)
Camera-Based Position Estimation using Frequency-Multiplexed Luminance Gradient: Shota Shimada, Hiroaki Murakami (the University of Tokyo), Kota Tsubouchi, Takuya Sasatani (the University of Tokyo), Yoshihiro Kawahara (the University of Tokyo); The 22nd International Conference on Pervasive Computing and Communications (PerCom 2024); April 22, 2024

CONFERENCE (INTERNATIONAL)
Orientation Estimation using Differences in WiFi Signal Behavior in LOS and NLOS Cases: Jiaqing Yang (Ritsumeikan University), Kota Tsubouchi, Shoma Nakamae (Ritsumeikan University), Nobuhiko Nishio (Ritsumeikan University); The 22nd International Conference on Pervasive Computing and Communications (PerCom 2024); April 22, 2024

OTHERS (DOMESTIC)
トピックモデルと大規模位置履歴を用いた地域ごとの興味関心分布の分析: 宮永薫 (東京工業大学), 安納爽響 (東京工業大学), 坪内孝太, 下坂正倫 (東京工業大学); 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); March 19, 2024

JOURNAL (INTERNATIONAL)
Boosting Feedback: A Framework for Enhancing Ground Truth Data Collection: Kota Tsubouchi, Tatsuru Higurashi, Shuji Yamaguchi; 2023 IEEE International Conference on Big Data (IEEE BigData 2023); March 01, 2024

JOURNAL (INTERNATIONAL)
SSCDV: Social Media Document Embedding with Sentiment and Topics for Financial Market Forecasting: Kentaro Ueda (Nara Institute of Science and Technology), Hirohiko Suwa (Nara Institute of Science and Technology), Masaki Yamada (Ritsumeikan University), Yuki Ogawa (Ritsumeikan University), Eiichi Umehara (Niigata University of International and Information Studies), Tatsuo Yamashita, Kota Tsubouchi, Keiichi Yasumoto (Nara Institute of Science and Technology); Expert Systems with Applications (ESWA); January 12, 2024

CONFERENCE (INTERNATIONAL)
Data-driven Simulation of Wireless Communication Signal Strength in Indoor Environments: Takuhiro Shimokawa (Tokyo Institute of Technology), Kota Tsubouchi, Yoshihiro Kawahara (The University of Tokyo), Hiroaki Murakami (The University of Tokyo), Masamichi Shimosaka (Tokyo Institute of Technology); The thirteenth edition of the International Conference on Indoor Positioning and Indoor Navigation (IPIN 2023); December 08, 2023

CONFERENCE (INTERNATIONAL)
Enhancing Indoor Altitude Estimation on Smartphones: Resolving Ventilation Fan Effects: Kota Tsubouchi, Yuki Hirayama (Ritsumeikan University), Takuzo Ikuta (Ritsumeikan University), Nobuhiko Nishio (Ritsumeikan University); The thirteenth edition of the International Conference on Indoor Positioning and Indoor Navigation (IPIN 2023); December 08, 2023

WORKSHOP (DOMESTIC)
ハンズフリーのデバイス操作のための汎用イヤラブルデバイスのIMUセンサーを用いた表情認識手法: 北森迪耶 (東京工業大学), 坪内孝太, 西尾信彦 (立命館大学), 西山勇毅 (東京大学), 下坂正倫 (東京工業大学); 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); November 21, 2023

WORKSHOP (DOMESTIC)
敵対的生成モデルに基づく活動人口の波形描画を用いた混雑寿命予報: 安納爽響 (東京工業大学), 坪内孝太, 下坂正倫 (東京工業大学); 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); November 21, 2023