People
Kota Tsubouchi Senior Chief Researcher, LY Research
Graduated from the Faculty of Engineering at the University of Tokyo in 2005 and completed a doctorate at the Graduate School of Frontier Sciences at the University of Tokyo in 2010. In the same year, he became a project researcher at the University of Tokyo. From 2012, he has been a senior researcher at Yahoo! JAPAN Research Labs. He is engaged in research and development of data analysis and machine learning focusing on human activity logs (location data, search logs, shopping history, sensor data, etc.). PhD (Environmental Studies).
Publications
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- CONFERENCE (INTERNATIONAL)
- Early Destination Prediction with Spatio-temporal User-Behavior Patterns
- Ryo Imai(Tokyo Tech), Kota Tsubouchi, Tetsuya Konishi(UTokyo), Masamichi Shimosaka(Tokyo Tech)
- The 2018 ACM International Joint Conference on Pervasive and Ubiquitous Computing
- October 11, 2018
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- CONFERENCE (INTERNATIONAL)
- Symbiotic Construction of Individual’s Rich Location Dataset
- Teruhiko Teraoka, Kota Tsubouchi, Hidehito Gomi
- The 2018 ACM International Joint Conference on Pervasive and Ubiquitous Computing Posters
- October 08, 2018
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- JOURNAL (INTERNATIONAL)
- Real-world large-scale study on adaptive notification scheduling on smartphones
- Tadashi Okoshi(Keio University), Kota Tsubouchi, Hideyuki Tokuda(Keio University)
- Pervasive and Mobile Computing Volume 50, October 2018
- October 01, 2018
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- CONFERENCE (INTERNATIONAL)
- Continuous Authentication System Using Online Activities
- Hidehito Gomi, Shuji Yamaguchi, Kota Tsubouchi, and Naomi Sasaya
- The 17th IEEE International Conference On Trust, Security And Privacy In Computing And Communications
- August 01, 2018
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- CONFERENCE (DOMESTIC)
- 乗換案内ログとSNS の融合による未来に発生する混雑原因の特定
- 山下 達雄,坪内 孝太, 丸山 三喜也, 山浦 優樹, 岡田 宏一朗
- 2018年度 人工知能学会全国大会(第32回)
- June 08, 2018
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- CONFERENCE (INTERNATIONAL)
- Text-visualizing Neural Network Model: Understanding Online Financial Textual Data
- Tomoki Ito(UTokyo), Hiroki Sakaji(UTokyo), Kota Tsubouchi, Kiyoshi Izum(UTokyo), Tatsuo Yamashita
- The 22nd Pacific-Asia Conference on Knowledge Discovery and Data
- June 04, 2018
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- CONFERENCE (DOMESTIC)
- 検索クエリによる小児外科疾患特有の機械学習モデル改善の試み
- 山口 修司, 内田 広夫（名古屋大学）, 檜 顕成（名古屋大学）, 坪内 孝太, 田島 玲
- 第55回日本小児外科学会学術集会
- May 30, 2018
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- CONFERENCE (DOMESTIC)
- 大規模ユーザの時空間滞在・経路パターンに基づく早期目的地予測
- 今井 遼（東工大）, 坪内 孝太, 小西 達也（東大）, 下坂 正倫（東工大）
- 情報処理学会UBI研究会
- May 18, 2018
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- CONFERENCE (INTERNATIONAL)
- Next place prediction in unfamiliar places considering contextual factors
- Takashi Nicholas Maeda(the University of Tokyo), Kota Tsubouchi and Fujio Toriumi (the University of Tokyo)
- The 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
- November 07, 2017
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- CONFERENCE (INTERNATIONAL)
- Colorful PDR: Colorizing PDR with Shopping Context in Walking
- Kohei Kanagu (Ritsumeikan University), Kota Tsubouchi, and Nobuhiko Nishio (Ritsumeikan University)
- Tenth International conference on Indoor Positioning and Indoor Navigation
- September 21, 2017
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- JOURNAL (INTERNATIONAL)
- CityFlowFragility: Measuring the Fragility of People Flow in Cities to Disasters using GPS Data Collected from Smartphones
- Takahiro Yabe (the University of Tokyo), Kota Tsubouchi, Yoshihide Sekimoto (the University of Tokyo)
- The 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing
- September 13, 2017
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- WORKSHOP (INTERNATIONAL)
- People's Interruptibility in-the-wild: Analysis of Breakpoint Detection Model in a Large-Scale Study
- Kota Tsubouchi, Tadashi Okoshi（Keio University）
- 2nd International Workshop on Smart & Ambient Notification and Attention Management
- September 13, 2017
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- WORKSHOP (INTERNATIONAL)
- Detecting aged deterioration of a radio base station map for wi-fi positioning
- Makiko Kawanaka (Ritsumeikan University), Kohei Yamamoto (Ritsumeikan University), Kota Tsubouchi, Kazuya Murao(Ritsumeikan University), Masahiro Mochizuki(Ritsumeikan University), Nobuhiko Nishio(Ritsumeikan University)
- 6th International Workshop on Human Activity Sensing Corpus and Applications
- September 12, 2017
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- CONFERENCE (INTERNATIONAL)
- Towards Authentication Using Multi-modal Online Activities
- Hidehito Gomi, Shuji Yamaguchi, Kota Tsubouchi, Naomi Sasaya
- The 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing Posters
- September 11, 2017
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- CONFERENCE (DOMESTIC)
- Cross-lingual news article comparison using bi-graph clustering and Siamese-LSTM
- 劉 恩達(東京大学大学院工学系研究科システム創成学専攻), 和泉 潔(東京大学大学院 工学系研究科 システム創成学専攻), 坪内 孝太, 山下 達雄
- 2017年度 人工知能学会全国大会(第31回)
- May 23, 2017
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- CONFERENCE (DOMESTIC)
- テキスト情報から生成された極性辞書を用いた市場動向分析
- 伊藤 友貴(東京大学大学院工学系研究科システム創成学専攻), 坪内 孝太, 山下 達雄, 和泉 潔(東京大学大学院 工学系研究科 システム創成学専攻)
- 2017年度 人工知能学会全国大会(第31回)
- May 23, 2017
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- CONFERENCE (DOMESTIC)
- 乗換案内データを用いた未来の混雑予測の研究
- 坪内 孝太, 下坂 正倫(東京工業大学 情報理工学院 情報工学系) 小西 達也(東京大学工学部), 丸山 三喜也, 山下 達雄
- 2017年度 人工知能学会全国大会(第31回)
- May 23, 2017
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- CONFERENCE (DOMESTIC)
- 病態検索クエリによる小児外科疾患検索履歴動向調査の試み
- 檜 顕成(名古屋大学), 内田 広夫(名古屋大学), 山口 修司, 坪内 孝太, 田島 玲
- 第54回日本小児外科学会学術集会
- May 13, 2017
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- CONFERENCE (INTERNATIONAL)
- Attention and Engagement-Awareness in the Wild: A Large-Scale Study with Adaptive Notifications
- Tadashi Okoshi（Keio University）, Kota Tsubouchi, Masaya Taji, Takanori Ichikawa, and Hideyuki Tokuda（Keio University）
- International Conference on Pervasive Computing and Communications
- March 13, 2017
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- CONFERENCE (INTERNATIONAL)
- A framework for evacuation hotspot detection after large scale disasters using location data from smartphones: case study of Kumamoto
- Takahiro Yabe（The University of Tokyo）, Kota Tsubouchi, Akihito Sudo（The University of Tokyo）, Yoshihide Sekimoto（The University of Tokyo）
- Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
- October 31, 2016