Koopman Spectral Kernels for Comparing Complex Dynamics: Application to Multiagent Sport Plays. - Keisuke Fujii 001; Yuki Inaba; Yoshinobu Kawahara (ECML/PKDD (3), 2017)

Quantitative Analysis and Visualization of Children's Group Behavior from the Perspective of Development of Spontaneity and Sociality. - Jun Ichikawa; Keisuke Fujii 001; Takayuki Nagai; Takashi Omori; Natsuki Oka (CRIWG, 2018)

Metric on Nonlinear Dynamical Systems with Perron-Frobenius Operators. - Isao Ishikawa; Keisuke Fujii 001; Masahiro Ikeda; Yuka Hashimoto; Yoshinobu Kawahara (NeurIPS, 2018)

Metric on Nonlinear Dynamical Systems with Koopman Operators. - Isao Ishikawa; Keisuke Fujii 001; Masahiro Ikeda; Yuka Hashimoto; Yoshinobu Kawahara (CoRR, 2018)

Prediction and classification in equation-free collective motion dynamics. - Keisuke Fujii 001; Takeshi Kawasaki; Yuki Inaba; Yoshinobu Kawahara (PLoS Comput. Biol., 2018)

Physically-interpretable classification of network dynamics for complex collective motions. - Keisuke Fujii 001; Naoya Takeishi; Motokazu Hojo; Yuki Inaba; Yoshinobu Kawahara (CoRR, 2019)

Dynamic mode decomposition in vector-valued reproducing kernel Hilbert spaces for extracting dynamical structure among observables. - Keisuke Fujii 001; Yoshinobu Kawahara (Neural Networks, 2019)

Supervised dynamic mode decomposition via multitask learning. - Keisuke Fujii 001; Yoshinobu Kawahara (Pattern Recognit. Lett., 2019)

Trajectory prediction with imitation learning reflecting defensive evaluation in team sports. - Masakiyo Teranishi; Keisuke Fujii 001; Kazuya Takeda (GCCE, 2020)

Succinct Trit-array Trie for Scalable Trajectory Similarity Search. - Shunsuke Kanda; Koh Takeuchi 001; Keisuke Fujii 001; Yasuo Tabei (SIGSPATIAL/GIS, 2020)

Policy learning with partial observation and mechanical constraints for multi-person modeling. - Keisuke Fujii 001; Naoya Takeishi; Yoshinobu Kawahara; Kazuya Takeda (CoRR, 2020)

Supervised sequential pattern mining of event sequences in sport to identify important patterns of play: an application to rugby union. - Rory P. Bunker; Keisuke Fujii 001; Hiroyuki Hanada; Ichiro Takeuchi (CoRR, 2020)

Dynamic mode decomposition via dictionary learning for foreground modeling in videos. - Israr Ul Haq; Keisuke Fujii 001; Yoshinobu Kawahara (Comput. Vis. Image Underst., 2020)

Understanding Others' Roles Based on Perspective Taking in Coordinated Group Behavior. - Jun Ichikawa; Keisuke Fujii 001 (CogSci, 2021)

Fréchet Kernel for Trajectory Data Analysis. - Koh Takeuchi 001; Masaaki Imaizumi; Shunsuke Kanda; Yasuo Tabei; Keisuke Fujii 001; Ken Yoda; Masakazu Ishihata; Takuya Maekawa (SIGSPATIAL/GIS, 2021)

Learning interaction rules from multi-animal trajectories via augmented behavioral models. - Keisuke Fujii 001; Naoya Takeishi; Kazushi Tsutsui; Emyo Fujioka; Nozomi Nishiumi; Ryoya Tanaka; Mika Fukushiro; Kaoru Ide; Hiroyoshi Kohno; Ken Yoda; Susumu Takahashi; Shizuko Hiryu; et al. (NeurIPS, 2021)

Flexible prediction of opponent motion with internal representation in interception behavior. - Kazushi Tsutsui; Keisuke Fujii 001; Kazutoshi Kudo; Kazuya Takeda (Biol. Cybern., 2021)

Discriminant Dynamic Mode Decomposition for Labeled Spatio-Temporal Data Collections. - Naoya Takeishi; Keisuke Fujii 001; Koh Takeuchi 001; Yoshinobu Kawahara (CoRR, 2021)

Evaluation of soccer team defense based on prediction models of ball recovery and being attacked. - Kosuke Toda; Masakiyo Teranishi; Keisuke Kushiro; Keisuke Fujii 001 (CoRR, 2021)

ViCE: Self-Supervised Visual Concept Embeddings as Contextual and Pixel Appearance Invariant Semantic Representations. - Robin Karlsson; Tomoki Hayashi; Keisuke Fujii 001; Alexander Carballo; Kento Ohtani; Kazuya Takeda (CoRR, 2021)

Data-Driven Analysis for Understanding Team Sports Behaviors. - Keisuke Fujii 001 (J. Robotics Mechatronics, 2021)

Improving Dense Representation Learning by Superpixelization and Contrasting Cluster Assignment. - Robin Karlsson; Tomoki Hayashi; Keisuke Fujii 001; Alexander Carballo; Kento Ohtani; Kazuya Takeda (BMVC, 2022)

Study on Heterogeneous Roles in Coordinated Behavior of a Triad Using Force-based Models. - Jun Ichikawa; Keisuke Fujii 001 (CogSci, 2022)

SoccerTrack: A Dataset and Tracking Algorithm for Soccer with Fish-eye and Drone Videos. - Atom Scott; Ikuma Uchida; Masaki Onishi; Yoshinari Kameda; Kazuhiro Fukui; Keisuke Fujii 001 (CVPR Workshops, 2022)

Automatic fault detection in race walking from a smartphone camera via fine-tuning pose estimation. - Tomohiro Suzuki; Kazuya Takeda; Keisuke Fujii 001 (GCCE, 2022)

Estimating counterfactual treatment outcomes over time in multi-vehicle simulation. - Keisuke Fujii 001; Koh Takeuchi 001; Atsushi Kuribayashi; Naoya Takeishi; Yoshinobu Kawahara; Kazuya Takeda (SIGSPATIAL/GIS, 2022)

How Does AI Play Football? An Analysis of RL and Real-world Football Strategies. - Atom Scott; Keisuke Fujii 001; Masaki Onishi (ICAART (1), 2022)

Emergence of Collaborative Hunting via Multi-Agent Deep Reinforcement Learning. - Kazushi Tsutsui; Kazuya Takeda; Keisuke Fujii 001 (ICPR Workshops (1), 2022)

Evaluation of Creating Scoring Opportunities for Teammates in Soccer via Trajectory Prediction. - Masakiyo Teranishi; Kazushi Tsutsui; Kazuya Takeda; Keisuke Fujii 001 (MLSA@PKDD/ECML, 2022)

Deep Reinforcement Learning in a Racket Sport for Player Evaluation With Technical and Tactical Contexts. - Ning Ding; Kazuya Takeda; Keisuke Fujii 001 (IEEE Access, 2022)

Estimating the Effect of Team Hitting Strategies Using Counterfactual Virtual Simulation in Baseball. - Hiroshi Nakahara; Kazuya Takeda; Keisuke Fujii 001 (CoRR, 2022)

Estimating counterfactual treatment outcomes over time in complex multi-agent scenarios. - Keisuke Fujii 001; Koh Takeuchi 001; Atsushi Kuribayashi; Naoya Takeishi; Yoshinobu Kawahara; Kazuya Takeda (CoRR, 2022)

Automatic detection of faults in race walking from a smartphone camera: a comparison of an Olympic medalist and university athletes. - Tomohiro Suzuki; Kazuya Takeda; Keisuke Fujii 001 (CoRR, 2022)

Location analysis of players in UEFA EURO 2020 and 2022 using generalized valuation of defense by estimating probabilities. - Rikuhei Umemoto; Kazushi Tsutsui; Keisuke Fujii 001 (CoRR, 2022)

Cooperative play classification in team sports via semi-supervised learning. - Zhang Ziyi; Kazuya Takeda; Keisuke Fujii 001 (Int. J. Comput. Sci. Sport, 2022)

Discriminant Dynamic Mode Decomposition for Labeled Spatiotemporal Data Collections. - Naoya Takeishi; Keisuke Fujii 001; Koh Takeuchi 001; Yoshinobu Kawahara (SIAM J. Appl. Dyn. Syst., 2022)

Score prediction using multiple object tracking for analyzing movements in 2-vs-2 Handball. - Ren Kobayashi; Rikuhei Umemoto; Kazuya Takeda; Keisuke Fujii 001 (GCCE, 2023)

Automatic Edge Error Judgment in Figure Skating Using 3D Pose Estimation from Inertial Sensors. - Ryota Tanaka; Tomohiro Suzuki; Kazuya Takeda; Keisuke Fujii 001 (GCCE, 2023)

Automatic Edge Error Judgment in Figure Skating Using 3D Pose Estimation from a Monocular Camera and IMUs. - Ryota Tanaka; Tomohiro Suzuki; Kazuya Takeda; Keisuke Fujii 001 (MMSports@MM, 2023)

Predictive World Models from Real-World Partial Observations. - Robin Karlsson; Alexander Carballo; Keisuke Fujii 001; Kento Ohtani; Kazuya Takeda (MOST, 2023)

Action Valuation of On- and Off-Ball Soccer Players Based on Multi-Agent Deep Reinforcement Learning. - Hiroshi Nakahara; Kazushi Tsutsui; Kazuya Takeda; Keisuke Fujii 001 (IEEE Access, 2023)

Multi-Agent Deep-Learning Based Comparative Analysis of Team Sport Trajectories. - Zhang Ziyi; Rory P. Bunker; Kazuya Takeda; Keisuke Fujii 001 (IEEE Access, 2023)

Transformer-Based Neural Marked Spatio Temporal Point Process Model for Football Match Events Analysis. - Calvin C. K. Yeung 001; Tony Sit; Keisuke Fujii 001 (CoRR, 2023)

A Strategic Framework for Optimal Decisions in Football 1-vs-1 Shot-Taking Situations: An Integrated Approach of Machine Learning, Theory-Based Modeling, and Game Theory. - Calvin C. K. Yeung 001; Keisuke Fujii 001 (CoRR, 2023)

Runner re-identification from single-view video in the open-world setting. - Tomohiro Suzuki; Kazushi Tsutsui; Kazuya Takeda; Keisuke Fujii 001 (CoRR, 2023)

DRUformer: Enhancing the driving scene Important object detection with driving relationship self-understanding. - Yingjie Niu; Ming Ding 002; Keisuke Fujii 001; Kento Ohtani; Alexander Carballo; Kazuya Takeda (CoRR, 2023)

Multi-agent statistical discriminative sub-trajectory mining and an application to NBA basketball. - Rory P. Bunker; Vo Nguyen Le Duy; Yasuo Tabei; Ichiro Takeuchi; Keisuke Fujii 001 (CoRR, 2023)

Estimating the effect of hitting strategies in baseball using counterfactual virtual simulation with deep learning. - Hiroshi Nakahara; Kazuya Takeda; Keisuke Fujii 001 (Int. J. Comput. Sci. Sport, 2023)

Learning to Predict Navigational Patterns From Partial Observations. - Robin Karlsson; Alexander Carballo; Francisco Lepe Salazar; Keisuke Fujii 001; Kento Ohtani; Kazuya Takeda (IEEE Robotics Autom. Lett., 2023)

TeamTrack: A Dataset for Multi-Sport Multi-Object Tracking in Full-pitch Videos. - Atom Scott; Ikuma Uchida; Ning Ding; Rikuhei Umemoto; Rory P. Bunker; Ren Kobayashi; Takeshi Koyama; Masaki Onishi; Yoshinari Kameda; Keisuke Fujii 001 (CVPR Workshops, 2024)

Pseudo-label based unsupervised fine-tuning of a monocular 3D pose estimation model for sports motions. - Tomohiro Suzuki; Ryota Tanaka; Kazuya Takeda; Keisuke Fujii 001 (CVPR Workshops, 2024)

AutoSoccerPose: Automated 3D posture Analysis of Soccer Shot Movements. - Calvin Yeung 001; Kenjiro Ide; Keisuke Fujii 001 (CVPR Workshops, 2024)

Force-Based Modeling of a Resilient Helping Role in Coordinated Behavior of a Triad. - Jun Ichikawa; Keisuke Fujii 001 (HCI (56), 2024)

Adaptive Action Supervision in Reinforcement Learning from Real-World Multi-Agent Demonstrations. - Keisuke Fujii 001; Kazushi Tsutsui; Atom Scott; Hiroshi Nakahara; Naoya Takeishi; Yoshinobu Kawahara (ICAART (2), 2024)

Estimation of Overlapped Tactical Actions from Soccer Match Video. - Kento Kuroda; Ikuma Uchida; Keisuke Fujii 001; Yoshinari Kameda (icSPORTS, 2024)

3D Pose-Based Temporal Action Segmentation for Figure Skating: A Fine-Grained and Jump Procedure-Aware Annotation Approach. - Ryota Tanaka; Tomohiro Suzuki; Keisuke Fujii 001 (MMSports@MM, 2024)

Dog's 3D Skeleton Reconstruction using a Moving Trainer for Analysis of Guide Dog Training. - Ansheng Wang; Rongjin Huang; Keisuke Fujii 001; Shinji Tanaka; Yoshiro Matsunami; Yasutoshi Makino; Hiroyoki Shinoda (SMC, 2024)

DRUformer: Enhancing Driving Scene Important Object Detection With Driving Scene Relationship Understanding. - Yingjie Niu; Ming Ding 002; Keisuke Fujii 001; Kento Ohtani; Alexander Carballo; Kazuya Takeda (IEEE Access, 2024)

Foul prediction with estimated poses from soccer broadcast video. - Jiale Fang; Calvin Yeung 001; Keisuke Fujii 001 (CoRR, 2024)

Machine Learning for Soccer Match Result Prediction. - Rory P. Bunker; Calvin Yeung 001; Keisuke Fujii 001 (CoRR, 2024)

Offensive Lineup Analysis in Basketball with Clustering Players Based on Shooting Style and Offensive Role. - Kazuhiro Yamada; Keisuke Fujii 001 (CoRR, 2024)

Mathematical models for off-ball scoring prediction in basketball. - Rikako Kono; Keisuke Fujii 001 (CoRR, 2024)

Fish Tracking Challenge 2024: A Multi-Object Tracking Competition with Sweetfish Schooling Data. - Makoto M. Itoh; Qingrui Hu; Takayuki Niizato; Hiroaki Kawashima; Keisuke Fujii 001 (CoRR, 2024)

MulCPred: Learning Multi-modal Concepts for Explainable Pedestrian Action Prediction. - Yan Feng; Alexander Carballo; Keisuke Fujii 001; Robin Karlsson; Ming Ding 002; Kazuya Takeda (CoRR, 2024)

Space evaluation based on pitch control using drone video in Ultimate. - Shunsuke Iwashita; Atom Scott; Rikuhei Umemoto; Ning Ding; Keisuke Fujii 001 (CoRR, 2024)

Enhanced Multi-Object Tracking Using Pose-based Virtual Markers in 3x3 Basketball. - Li Yin; Calvin Yeung 001; Qingrui Hu; Jun Ichikawa; Hirotsugu Azechi; Susumu Takahashi; Keisuke Fujii 001 (CoRR, 2024)

Automatic Detection of Faults in Simulated Race Walking from a Fixed Smartphone Camera. - Tomohiro Suzuki; Kazuya Takeda; Keisuke Fujii 001 (Int. J. Comput. Sci. Sport, 2024)

Unveiling Multi-Agent Strategies: A Data-Driven Approach for Extracting and Evaluating Team Tactics from Football Event and Freeze-Frame Data. - Calvin Yeung 001; Rory P. Bunker; Keisuke Fujii 001 (J. Robotics Mechatronics, 2024)

Estimation of control area in badminton doubles with pose information from top and back view drone videos. - Ning Ding; Kazuya Takeda; Wenhui Jin; Yingjiu Bei; Keisuke Fujii 001 (Multim. Tools Appl., 2024)

Decentralized policy learning with partial observation and mechanical constraints for multiperson modeling. - Keisuke Fujii 001; Naoya Takeishi; Yoshinobu Kawahara; Kazuya Takeda (Neural Networks, 2024)

Open-Vocabulary Predictive World Models from Sensor Observations. - Robin Karlsson; Ruslan Asfandiyarov; Alexander Carballo; Keisuke Fujii 001; Kento Ohtani; Kazuya Takeda (Sensors, 2024)

Evaluating soccer match prediction models: a deep learning approach and feature optimization for gradient-boosted trees. - Calvin Yeung 001; Rory P. Bunker; Rikuhei Umemoto; Keisuke Fujii 001 (Mach. Learn., 2024)

Basketball-SORT: an association method for complex multi-object occlusion problems in basketball multi-object tracking. - Qingrui Hu; Atom Scott; Calvin Yeung 001; Keisuke Fujii 001 (Multim. Tools Appl., 2024)

Runner re-identification from single-view running video in the open-world setting. - Tomohiro Suzuki; Kazushi Tsutsui; Kazuya Takeda; Keisuke Fujii 001 (Multim. Tools Appl., 2024)

Force-Based Modeling of Heterogeneous Roles in the Coordinated Behavior of a Triad. - Jun Ichikawa; Keisuke Fujii 001 (New Gener. Comput., 2024)

AthletePose3D: A Benchmark Dataset for 3D Human Pose Estimation and Kinematic Validation in Athletic Movements. - Calvin Yeung 001; Tomohiro Suzuki; Ryota Tanaka; Zhuoer Yin; Keisuke Fujii 001 (CVPR Workshops, 2025)

Two clusterings to capture basketball players' shooting tendencies using tracking data: clustering of shooting styles and the shots themselves. - Kazuhiro Yamada; Keisuke Fujii 001 (Int. J. Comput. Sci. Sport, 2025)

Machine Learning in Sports - Open Approach for Next Play Analytics - Keisuke Fujii 001 (Springer, 2025)

SoccerSynth-Detection: A Synthetic Dataset for Soccer Player Detection. - Haobin Qin; Calvin Yeung 001; Rikuhei Umemoto; Keisuke Fujii 001 (CoRR, 2025)

A Zero-Shot LLM Framework for Automatic Assignment Grading in Higher Education. - Calvin Yeung 001; Jeff Yu; King Chau Cheung; Tat Wing Wong; Chun Man Chan; Kin Chi Wong; Keisuke Fujii 001 (CoRR, 2025)

OpenSTARLab: Open Approach for Spatio-Temporal Agent Data Analysis in Soccer. - Calvin Yeung 001; Kenjiro Ide; Taiga Someya; Keisuke Fujii 001 (CoRR, 2025)

Estimating Counterfactual Treatment Outcomes Over Time in Complex Multiagent Scenarios. - Keisuke Fujii 001; Koh Takeuchi 001; Atsushi Kuribayashi; Naoya Takeishi; Yoshinobu Kawahara; Kazuya Takeda (IEEE Trans. Neural Networks Learn. Syst., 2025)

SoccerSynth Field: enhancing field detection with synthetic data from virtual soccer simulator. - Haobin Qin; Jiale Fang; Keisuke Fujii 001 (CoRR, 2025)

TrackID3x3: A Dataset and Algorithm for Multi-Player Tracking with Identification and Pose Estimation in 3x3 Basketball Full-court Videos. - Kazuhiro Yamada; Li Yin; Qingrui Hu; Ning Ding; Shunsuke Iwashita; Jun Ichikawa; Kiwamu Kotani; Calvin Yeung 001; Keisuke Fujii 001 (CoRR, 2025)

Transformer-based neural marked spatio temporal point process model for analyzing football match events. - Calvin Yeung 001; Tony Sit; Keisuke Fujii 001 (Appl. Intell., 2025)

Space evaluation at the starting point of soccer transitions. - Yohei Ogawa; Rikuhei Umemoto; Keisuke Fujii 001 (CoRR, 2025)

Velocity Completion Task and Method for Event-based Player Positional Data in Soccer. - Rikuhei Umemoto; Keisuke Fujii 001 (CoRR, 2025)

Interpretable Low-Dimensional Modeling of Spatiotemporal Agent States for Decision Making in Football Tactics. - Kenjiro Ide; Taiga Someya; Kohei Kawaguchi; Keisuke Fujii 001 (CoRR, 2025)

AthleticsPose: Authentic Sports Motion Dataset on Athletic Field and Evaluation of Monocular 3D Pose Estimation Ability. - Tomohiro Suzuki; Ryota Tanaka; Calvin Yeung 001; Keisuke Fujii 001 (CoRR, 2025)

KASportsFormer: Kinematic Anatomy Enhanced Transformer for 3D Human Pose Estimation on Short Sports Scene Video. - Zhuoer Yin; Calvin Yeung 001; Tomohiro Suzuki; Ryota Tanaka; Keisuke Fujii 001 (CoRR, 2025)

SoccerTrack v2: A Full-Pitch Multi-View Soccer Dataset for Game State Reconstruction. - Atom Scott; Ikuma Uchida; Kento Kuroda; Yufi Kim; Keisuke Fujii 001 (CoRR, 2025)

VIFSS: View-Invariant and Figure Skating-Specific Pose Representation Learning for Temporal Action Segmentation. - Ryota Tanaka; Tomohiro Suzuki; Keisuke Fujii 001 (CoRR, 2025)