Keisuke Fujii

J-GLOBAL         Last updated: Sep 15, 2019 at 18:31
Keisuke Fujii
Nagoya University
Job title
Assistant Professor
Research funding number


We are studying information processing technology such as machine learning using complex time-series data like human body movements. For example, we model, evaluate, and understand human skillful movements and flexible teamwork using motion data of actual sports games.

Research Areas


Academic & Professional Experience

Apr 2019
Assistant Professor, Graduate School of Informatics, Nagoya University
May 2019
Visiting Scientist, Advanced Intelligence Project, 理化学研究所

Published Papers

Dynamic mode decomposition in vector-valued reproducing kernel Hilbert spaces for extracting dynamical structure among observables
Keisuke Fujii, Yoshinobu Kawahara
Neural Networks      May 2019   [Refereed]
Analysis of factors predicting who obtains a ball in basketball rebounding situations
Motokazu Hojo, Keisuke Fujii, Yoshinobu Kawahara
International Journal of Performance Analysis in Sport   19(2) 192-205   Feb 2019   [Refereed]
Supervised Dynamic Mode Decomposition via Multitask Learning
Keisuke Fujii, Yoshinobu Kawahara
Pattern Recognition Letters   122(1) 7-13   Feb 2019   [Refereed]
Motor control of practice and actual strokes by professional and amateur golfers differ but feature a distance-dependent control strategy
Yumiko Hasegawa, Keisuke Fujii, Akito Miura, Keiko Yokoyama, Yuji Yamamoto
European Journal of Sport Science   Accepted    2019   [Refereed]
Automatically recognizing strategic cooperative behaviors in various situations of a team sport
Motokazu Hojo, Keisuke Fujii, Yuki Inaba, Yoichi Motoyasu,Yoshinobu Kawahara
PLoS One   13(12) e0209247   Dec 2018   [Refereed]
Prediction and classification in equation-free collective motion dynamics
Keisuke Fujii, Takeshi Kawasaki, Yuki Inaba, Yoshinobu Kawahara
PLoS Computational Biology   14(11) e1006545   Nov 2018   [Refereed]
Metric on nonlinear dynamical systems with Koopman operators
Isao Ishikawa, Keisuke Fujii, Masahiro Ikeda, Yuka Hashimoto, Yoshinobu Kawahara
Advances in Neural Information Processing Systems 31 (NeurIPS'18)   31 2858-2868   Dec 2018   [Refereed]
Quantitative analysis and visualization of children's group behavior from the perspective of development of spontaneity and sociality
Jun Ichikawa, Keisuke Fujii, Takayuki Nagai, Takashi Omori, Natsuki Oka
24th Conference of Collaboration Researchers International Working Group (CRIWG'18)   169-176   Sep 2018   [Refereed]
Social forces for team coordination in ball possession game
Keiko Yokoyama, Hiroyuki Shima, Keisuke Fujii, Noriyuki Tabuchi, Yuji Yamamoto
Physical Review E   97(022410)    Feb 2018   [Refereed]
Koopman spectral kernels for comparing complex dynamics: Application to multiagent sport plays
Keisuke Fujii, Yuki Inaba, Yoshinobu Kawahara
European Conf. on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML-PKDD'17)   127-139   Sep 2017   [Refereed]

Awards & Honors

Jun 2019
Data-driven spectral analysis for social biomechanics, Presentation Award, 1st Kei-Hiroba (Biomechanics Research Society)
Winner: Keisuke Fujii, Naoya Takeishi, Yuki Inaba, Benio Kibushi, Motoki Kouzaki, Yoshinobu Kawahara

Conference Activities & Talks

Dynamic mode decomposition and its applications (II) [Invited]
Keisuke Fujii
2019 Distinguished Lecture and International Interdisciplinary Workshop   6 Aug 2019   
Dynamic mode decomposition and its applications (I) [Invited]
Keisuke Fujii
2019 Distinguished Lecture and International Interdisciplinary Workshop   5 Aug 2019   
Data-driven spectral analysis for social biomechanics
Keisuke Fujii, Naoya Takeishi, Yuki Inaba, Benio Kibushi, Motoki Kouzaki, Yoshinobu Kawahara
1st Kei-Hiroba (Biomechanics Research Society)   15 Jun 2019   
Human creative interaction of group sports: Information-based modeling [Invited]
Keisuke Fujii
The fourth international workshop on Skill Science   13 Nov 2017   
Identification of multi-player cooperative play by machine learning using group sports position information data
24 May 2017   
An attack-and-defend competition as a redundant cognitive-motor system
Keisuke Fujii, Yuki Yoshihara, Yuji Yamamoto
Society for Neuroscience   13 Nov 2016   
Globally competitive and locally coordinative dynamics and behavior in group sports [Invited]
Keisuke Fujii
International Symposium Integrated Understanding for Emergent Property of Cooperation and Competition Dynamics   3 Mar 2016   
Interpersonal competition dynamics in a ballgame: Modeling of a 1-on-1 game and two opposing cognitive systems
Keisuke Fujii, Yuji Yamamoto
International Society of Posture and Gait Research   30 Jun 2015   
The role of the kinetic preparatory state in defending against a dribbler in a basketball 1-on-1 subphase
Keisuke Fujii, Shinsuke Yoshioka, Tadao Isaka, Motoki Kouzaki
The Asian-South Pacific Association of Sport Psychology (ASPASP)   8 Aug 2014   
Strategies for defending dribbler: Defender and dribbler interaction during a 1-on-1 basketball situation
Keisuke Fujii, Daichi Yamashita, Shinsuke Yoshioka, Motoki Kouzaki
Annual Congress of the European College of Sports Science   2012   
Anticipation of direction in the cutting maneuver is not influenced by experience in ball games
Keisuke Fujii, Masahiro Shinya, Daichi Yamashita, Shingo Oda, Motoki Kouzaki.
The North American Society for the Psychology of Sport and Physical Activity Conference   2012   
A possible explanation of the anticipation skill of defenders in a quick change of running direction, based on the inverted pendulum model.
Keisuke Fujii, Masahiro Shinya, Daichi Yamashita, Shingo Oda
Annual Congress of the European College of Sports Science   2011   
Helping behavior toward a teammate: real-time group problem-solving at multiple spatial scales during a ballgame
Keisuke Fujii, Takeshi Koyama, Akira Rikukawa, Hiroshi Yamada, Yuji Yamamoto
The First International Symposium on Swarm Behavior and Bio-Inspired Robotics   28 Oct 2015