Takaya Kawakatsu, PhD
川勝孝也 博士 (情報理工学)
kat.nii.ac.jp gmail.com
My research in recognition technology realizes Cyber-Physical Systems by uncovering and reconstructing latent structures within observed data, spanning applications from structural health monitoring to document intelligence.
2026
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GryphOne: Symbol-Aware Masked Diffusion for Structural Refinement in Offline Handwritten Mathematical Expression Recognition
Takaya Kawakatsu, Ryo Ishiyama.19th European Conference on Computer Vision (ECCV), 2026, arXiv, Poster, YouTube, GitHub, Pretrained Model. -
Ambiguity-Controlled Handwritten Mathematical Expression Generation via Harmonized Dual-Conditional Guidance
Ryo Ishiyama, Takaya Kawakatsu.20th International Conference on Document Analysis and Recognition (ICDAR), 2026, GitHub, Hugging Face. -
Revisiting Structural Dependency in Autoregressive Multi-Task Table Recognition via Order-Independent Cell-Level Representations
Takaya Kawakatsu.20th International Conference on Document Analysis and Recognition (ICDAR), 2026, arXiv, GitHub, Pretrained Model. -
Takasu Lab at the NTCIR-19 SciClaimEval Task: Plugin Pipelines with Deterministic Evidence Checks for Cross-modal Claim Verification
Takaya Kawakatsu, Nam Tuan Ly.19th NII Testbeds and Community for Information access Research (NTCIR), SciClaimEval Track, 2026. -
Takasu Lab at the NTCIR-19 DAGRI Task: Hybrid OCR and Deterministic Post-Correction for Agricultural Table Information Extraction
Takaya Kawakatsu, Nam Tuan Ly.19th NII Testbeds and Community for Information access Research (NTCIR), DAGRI Track, 2026. -
拡散モデルによる曖昧な手書き数式画像生成
Ryo Ishiyama, Takaya Kawakatsu.29th Meeting on Image Recognition and Understanding (MIRU), 2026. -
離散拡散に基づく反復的構造精緻化による手書き数式認識
Takaya Kawakatsu, Ryo Ishiyama.29th Meeting on Image Recognition and Understanding (MIRU), 2026.
2025
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Hierarchical Modeling Approach to Fast and Accurate Table Recognition
Takaya Kawakatsu.Preprint, 2025, GitHub.
2024
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Multi-Cell Decoder and Mutual Learning for Table Structure and Character Recognition
Takaya Kawakatsu.18th International Conference on Document Analysis and Recognition (ICDAR), 2024, arXiv, GitHub, Pretrained Model.
2023
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Data-Driven Bridge Weigh-In-Motion
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Tomonori Nagayama, Jun Adachi.IEEE Sensors Journal, Volume 23, Issue 15, 2023. -
A Data-Driven Approach for Bridge Weigh-in-Motion from Impact Acceleration Responses at Bridge Joints
Haoqi Wang, Tomonori Nagayama, Takaya Kawakatsu, Atsuhiro Takasu.Structural Control and Health Monitoring, Volume 2023, 2023.
2022
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Deflection Estimation of Highway Bridges Based on Acceleration Measurement Using a Machine Learning Approach
Atta E Mustafa, Tomonori Nagayama, Takaya Kawakatsu, Atsuhiro Takasu, Osamu Sanada, Hisatada Suganuma.8th World Conference on Structural Control and Monitoring (WCSCM), 2022. -
Estimation of Highway Bridges' Deflection from Acceleration Measurement by Using a Machine Learning Approach
Atta E Mustafa, Tomonori Nagayama, Takaya Kawakatsu, Atsuhiro Takasu, Osamu Sanada, Hisatada Suganuma.77th Annual Conference of the Japan Society of Civil Engineers (JSCE), 2022.
2021
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深層学習技術を用いた橋梁通過車両モニタリング
Atsuhiro Takasu, Takaya Kawakatsu, Kenro Aihara, Jun Adachi.Journal of the Society of Instrument and Control Engineers (JSICE), Volume 60, Issue 11, 2021. -
Fully-Neural Approach to Vehicle Weighing and Strain Prediction on Bridges Using Wireless Accelerometers
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi, Haoqi Wang, Tomonori Nagayama.46th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021, Slides.
2020
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Fully-Neural Approach to Heavy Vehicle Detection on Bridges Using a Single Strain Sensor
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi. -
Deep learning approach to modeling bridge dynamics using cameras and sensors
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.10th International Conference on Bridge Maintenance, Safety and Management (IABMAS), 2020. -
A data management platform for efficient monitoring of infrastructures
Kenro Aihara, Atsuhiro Takasu, Takaya Kawakatsu, Akira Kinoshita, Jun Adachi.10th International Conference on Bridge Maintenance, Safety and Management (IABMAS), 2020. -
IoTと画像機械学習を活用した自動車荷重実態の簡易把握技術の開発
Tomonori Nagayama, Di Su, Yozo Fujino, Dionysius Siringoringo, Mayuko Nishino, Atsuhiro Takasu, Takaya Kawakatsu.国土交通省 道路政策の質の向上に資する技術研究開発 研究状況報告書, 2020. -
過積載を見逃さない道路橋
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.NII Open House, 2020.
2019
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Deep Sensing Approach to Media-Fusion Analysis for Modeling Bridge Dynamics
Takaya Kawakatsu.Doctoral Thesis, Graduate School of Information Science and Technology, The University of Tokyo, 2019. -
Deep Sensing Approach to Single-Sensor Vehicle Weighing System on Bridges
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.IEEE Sensors Journal, Volume 19, Issue 1, 2019. -
Adversarial Media-Fusion Approach to Strain Prediction for Bridges
Takaya Kawakatsu, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.8th International Conference on Pattern Recognition Applications and Methods (ICPRAM), 2019.
2018
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Adversarial Spiral Learning Approach to Strain Analysis for Bridge Damage Detection
Takaya Kawakatsu, Akira Kinoshita, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.20th International Conference on Big Data Analytics and Knowledge Discovery (DaWaK), 2018. -
Deep Sensing Approach to Single-Sensor Bridge Weighing in Motion
Takaya Kawakatsu, Akira Kinoshita, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.9th European Workshop on Structural Health Monitoring (EWSHM), 2018. -
Deep Sensing Approach to Vehicle Detection from Bridge Vibration
Takaya Kawakatsu, Akira Kinoshita, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.12th International Workshop on Information Search, Integration, and Personalization (ISIP), 2018.
2017
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Traffic Surveillance System for Bridge Vibration Analysis
Takaya Kawakatsu, Akira Kakitani, Kenro Aihara, Atsuhiro Takasu, Jun Adachi.4th International Workshop on Information Integration in Cyber Physical Systems (IICPS), 2017.
2016
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Divide-and-Conquer Parallelism for Learning Mixture Models
Takaya Kawakatsu, Akira Kinoshita, Atsuhiro Takasu, Jun Adachi.Transactions on Large-Scale Data and Knowledge-Centered Systems (TLDKS), Volume 28, 2016. -
機械学習を高効率に並列化する
Takaya Kawakatsu, Akira Kinoshita, Atsuhiro Takasu, Jun Adachi.NII Open House, 2016.
2015
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Highly Efficient Parallel Framework: A Divide-and-Conquer Approach
Takaya Kawakatsu, Akira Kinoshita, Atsuhiro Takasu, Jun Adachi.26th International Conference on Database and Expert Systems Applications (DEXA), 2015. -
大規模CPSデータの蓄積・検索システム
Atsuhiro Takasu, Takaya Kawakatsu, Le Hong Van, Jun Adachi.Symposium on the CPS Integrated IT Platform (CPS-IIP) Project, 2015.
Misc
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社会インフラを支えるIoTとデータ共有基盤
第11回 社会実装促進会議・土木学会SIPインフラ技術報告会, 2019. -
インフラ維持管理のための共有プラットフォーム
第10回 社会実装促進会議・土木学会SIPインフラ技術報告会, 2018. -
IoTでインフラを守る
CEATEC 主催者企画 IoTタウン, 2017, 2018.