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OGUCHI Masato
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Research Keywords 【 display / non-display 】
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Cloud Computing, Big Data, IoT Network, Communication Protocol, Cyber-Physical System, Security
Research Pursuits 【 display / non-display 】
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Recently, advanced network computing systems have been realized as various sorts of computers and resources are connected with each other, owing to prosperity of large-scale networks represented by Internet. In our laboratory, several innovative methods are proposed for such an environment in order to make the best use of computer resources comfortably and securely. They include IP-SAN Consolidated PC Cluster, High Performance Dependable SAN over Virtual Private Network (VPN), Authentication and Cryptography on Wireless LAN, and TCP Parameter Analysis and Control. Network protocols and concept models suitable for each environment are proposed.
Educational Pursuits 【 display / non-display 】
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Information Sciences
Exercises in Basic Programming
Computer Networks I
Computer Networks II
Advanced Computer Networks
Advanced Distributed Computing
Academic 【 display / non-display 】
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Keio University, Faculty of Science and Engineering, Department of Electric Engineering, University, 卒業, Japan
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University of Tokyo, Faculty of Engineering, Department of Electric Engineering, Graduate School(Master's Course), 修了, Japan
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University of Tokyo, Faculty of Engineering, Department of Electronics Engineering, Graduate School(Doctor's Course), 修了, Japan
Degree 【 display / non-display 】
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Bachelor of Engineering, Keio University
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M.S. in Electric Engineering, University of Tokyo
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Ph.D. in Electronics Engineering, University of Tokyo
Campus Career 【 display / non-display 】
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Graduate School of Humanities and Sciences, Research Organization, the Core Section The Natural/Applied Sciences Division, Professor, 2012.04 - 2015.03
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Faculty of Core Research Natural Sciences Division, Professor, 2015.04 -
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Graduate School of Humanities and Sciences, Education Organization, Doctral Program Advanced Sciences, 2012.04 - 2015.03
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Graduate School of Humanities and Sciences, Education Organization, Doctral Program Advanced Sciences, 2015.04 -
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Graduate School of Humanities and Sciences, Education Organization, Master's Program Advanced Sciences, 2012.04 - 2015.03
Research Field 【 display / non-display 】
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Informatics / Informatics / Information security
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Informatics / Informatics / Information network
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Informatics / Informatics / Software
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Informatics / Informatics / Computer system
Books 【 display / non-display 】
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コンピュータで広がる
サイエンス社2020.12, 小口正人, Textbook, survey, introduction
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コンピュータネットワーク入門
サイエンス社2007.04, 小口正人, Textbook, survey, introduction
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ワイヤレス・ブロードバンド教科書 - 高速IPワイヤレス編 -
インプレスR&D2006.06, 小口正人（共著）, Textbook, survey, introduction
Papers 【 display / non-display 】
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SNSコミュニケーション分析手法を用いた金融犯罪情報の早期検出に関する研究 〜グループ発見手法の検討と取得データに基づく考察〜
日本データベース学会データドリブンスタディーズ, DBSJ, , 2026.03, 伊藤 純菜，三田 智之，趙 智賢，長田 繁幸，中川 直樹，小口 正人, Original, Research paper (scientific journal), Coauthor
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Iterative Exploration of Cybercrime Groups on Social Media and Convergence Analysis
Proc. the 9th Cyber Security in Networking Conference (CSNet2025), , 2025.10, Junna Ito, Tomoyuki Sanda, Zhixian Zhao, Shigeyuki Osada, Naoki Nakagawa, and Masato Oguchi, Original, Research paper (international conference proceedings), Coauthor
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Consideration of Attribute-Based Encryption Utilization in IoT Communication
Proc. the 9th Cyber Security in Networking Conference (CSNet2025), , 2025.10, Reina Sasaki, Yutaka Ishikawa, Atsuko Takefusa, and Masato Oguchi, Original, Research paper (international conference proceedings), Coauthor
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Multivariate Time Series Anomaly Prediction Based on Forecasting and Reconstruction Using Transformer with Temporal and Feature-wise Attention
Proc. European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKDD2025), , 2025.09, Chihiro Maru, Masato Oguchi, and Ichiro Kobayashi, Original, Research paper (international conference proceedings), Coauthor
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Communication Performance of ROS and ROS 2-Based IoT Systems for Smart Home Applications
IEICE Transactions on Information and Systems, IEICE, , 2025.08, Reina Sasaki, Atsuko Takefusa, Hidemoto Nakada, and Masato Oguchi, Original, Research paper (scientific journal), Coauthor
Presentations 【 display / non-display 】
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Iterative Exploration of Cybercrime Groups on Social Media and Convergence Analysis
Junna Ito, Tomoyuki Sanda, Zhixian Zhao, Shigeyuki Osada, Naoki Nakagawa, and Masato Oguchi, International, 2025.10, , 9th Cyber Security in Networking Conference (CSNet2025), Abu Dhabi, UAE, IEEE, Not Invited, Coauthor
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Consideration of Attribute-Based Encryption Utilization in IoT Communication
Reina Sasaki, Yutaka Ishikawa, Atsuko Takefusa, and Masato Oguchi, International, 2025.10, , 9th Cyber Security in Networking Conference (CSNet2025), Abu Dhabi, UAE, IEEE, Not Invited, Coauthor
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Multivariate Time Series Anomaly Prediction Based on Forecasting and Reconstruction Using Transformer with Temporal and Feature-wise Attention
Chihiro Maru, Masato Oguchi, and Ichiro Kobayashi, International, 2025.09, , European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKDD2025), Porto, Portugal, Porto Digital, Not Invited, Coauthor
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MRF-JOIN: Differentially Private Vertical Data Synthesis via Federated Marginal Join on Shared Attributes
Marin Matsumoto, Tsubasa Takahashi, Shun Takagi, and Masato Oguchi, International, 2025.08, , 36th International Conference on Database and Expert Systems Applications (DEXA2025), Bangkok, Thailand, DEXA Society, Not Invited, Coauthor
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Optimization of Prompt Segmentation for Improving Event Recommendation Accuracy Using Generative Artificial Intelligence
Shiori Oomoto, Miki Enoki, and Masato Oguchi, International, 2025.07, , IEEE 49th Annual Computers, Software, and Applications Conference (COMPSAC2025), Toronto, Canada, IEEE, Not Invited, Coauthor
Prize for Research Activities 【 display / non-display 】
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International Conference on Big Data Intelligence and Computing(DataCom2022)，Best Paper Award
IEEE, Saki Takano, Akihiro Nakao, Saneyasu Yamaguchi, and Masato Oguchi, Privacy-Protective Distributed Machine Learning between Rich Devices and Edge Servers using Confidence Level, 2022.12, International, Award from international society, conference, symposium, etc.
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International Conference on Emerging Technologies for Communications (ICETC2021)，Best Paper Award
IEICE, Saki Takano, Akihiro Nakao, Saneyasu Yamaguchi, and Masato Oguchi, Privacy-Protective Distributed Machine Learning Using Rich Clients, 2021.12, International
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情報処理学会, 礒井 葉那，竹房 あつ子，中田 秀基，小口 正人, 動作認識のための合成データ活用に向けたドメイン適応手法の比較, 2021.07, Domestic
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情報処理学会, 松本 茉倫，小口 正人, 完全準同型暗号と共通鍵暗号を組み合わせたIoTデバイスにおけるセンサデータ暗号化の高速化, 2020.06, Domestic
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DICOMO2013優秀論文賞
情報処理学会, 長谷川友香，小口正人, 「周辺ユーザ探索による緊急時判断機能を備えた家族間情報共有システム」, 2013.07, Domestic
Receipt of outside funds (Education, Research, Contribution to Society and industry-academia[government] collaboration) 【 display / non-display 】
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Grant-in-Aid for Scientific Research(B)2022, 700,000yen
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Grant-in-Aid for Scientific Research(B)2021, 600,000yen
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Grant-in-Aid for Scientific Research(B)2020, 600,000yen
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Grant-in-Aid for Scientific Research(B)2019, 700,000yen
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Grant-in-Aid for Scientific Research(C)2018, 400,000yen
Contributions as an officer, member, etc., of an academic society 【 display / non-display 】
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2023.06 - now，the Chairperson, International
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2021.01 - 2024.12，the Chairperson, International
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2020.06 - 2022.05，the Vice-Chairperson, Domestic
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2017.06 - now，Trustee, Domestic
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2017.06 - 2019.06，the Chairperson, Domestic