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Person-person mutual action recognition (also referred to as interaction recognition) is an important research branch of human activity analysis. Current solutions in the field -- mainly dominated by CNNs, GCNs and LSTMs -- often consist of…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Mauricio Perez , Jun Liu , Alex C. Kot

Localizing persons and recognizing their actions from videos is a challenging task towards high-level video understanding. Recent advances have been achieved by modeling direct pairwise relations between entities. In this paper, we take one…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 Junting Pan , Siyu Chen , Mike Zheng Shou , Yu Liu , Jing Shao , Hongsheng Li

As Large Language Models (LLMs) get integrated into diverse workflows, they are increasingly being regarded as "collaborators" with humans, and required to work in coordination with other AI systems. If such AI collaborators are to reliably…

Computation and Language · Computer Science 2026-01-23 Abhijnan Nath , Carine Graff , Nikhil Krishnaswamy

Large language model (LLM) agents often rely on long sequences of low-level textual actions, resulting in large effective decision horizons and high inference cost. While prior work has focused on improving inference efficiency through…

Artificial Intelligence · Computer Science 2026-05-20 Wenhao Huang , Qingwen Zeng , Qiyue Chen , Zijie Guo , Yu Sun , Cheng Yang , Siru Ouyang , Jiri Gesi , Fang Wu , Jiayi Zhang , Huaming Chen , Bang Liu , Xiangru Tang , Chenglin Wu

Simulating realistic interaction and motions for physics-based characters is of great interest for interactive applications, and automatic secondary character animation in the movie and video game industries. Recent works in reinforcement…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Mohamed Younes , Ewa Kijak , Richard Kulpa , Simon Malinowski , Franck Multon

Group Activity Recognition (GAR) is a fundamental problem in computer vision, with diverse applications in sports video analysis, video surveillance, and social scene understanding. Unlike conventional action recognition, GAR aims to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Naga VS Raviteja Chappa , Pha Nguyen , Page Daniel Dobbs , Khoa Luu

Modeling multi-agent systems requires understanding how agents interact. Such systems are often difficult to model because they can involve a variety of types of interactions that layer together to drive rich social behavioral dynamics.…

Machine Learning · Computer Science 2023-01-26 Fan-Yun Sun , Isaac Kauvar , Ruohan Zhang , Jiachen Li , Mykel Kochenderfer , Jiajun Wu , Nick Haber

Multi-view action recognition (MVAR) leverages complementary temporal information from different views to improve the learning performance. Obtaining informative view-specific representation plays an essential role in MVAR. Attention has…

Computer Vision and Pattern Recognition · Computer Science 2020-11-30 Yue Bai , Zhiqiang Tao , Lichen Wang , Sheng Li , Yu Yin , Yun Fu

Group activity recognition is a crucial yet challenging problem, whose core lies in fully exploring spatial-temporal interactions among individuals and generating reasonable group representations. However, previous methods either model…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Shuaicheng Li , Qianggang Cao , Lingbo Liu , Kunlin Yang , Shinan Liu , Jun Hou , Shuai Yi

3D multi-person motion prediction is a highly complex task, primarily due to the dependencies on both individual past movements and the interactions between agents. Moreover, effectively modeling these interactions often incurs substantial…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Yuanhong Zheng , Ruixuan Yu , Jian Sun

Vision-Language Pre-training (VLP) aims to learn multi-modal representations from image-text pairs and serves for downstream vision-language tasks in a fine-tuning fashion. The dominant VLP models adopt a CNN-Transformer architecture, which…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Hongwei Xue , Yupan Huang , Bei Liu , Houwen Peng , Jianlong Fu , Houqiang Li , Jiebo Luo

Successful sequential recommendation systems rely on accurately capturing the user's short-term and long-term interest. Although Transformer-based models achieved state-of-the-art performance in the sequential recommendation task, they…

Machine Learning · Computer Science 2021-08-18 Hojoon Lee , Dongyoon Hwang , Sunghwan Hong , Changyeon Kim , Seungryong Kim , Jaegul Choo

Existing multi-agent learning approaches have developed interactive training environments to explicitly promote collaboration among multiple Large Language Models (LLMs), thereby constructing stronger multi-agent systems (MAS). However,…

Artificial Intelligence · Computer Science 2026-04-14 Hehai Lin , Shilei Cao , Sudong Wang , Haotian Wu , Minzhi Li , Linyi Yang , Juepeng Zheng , Chengwei Qin

A large amount of work has been done in Multi-Agent Systems (MAS) for modeling and solving problems with multiple interacting agents. However, most LLMs are pretrained independently and not specifically optimized for coordination. Existing…

Artificial Intelligence · Computer Science 2025-12-10 Shuo Liu , Tianle Chen , Zeyu Liang , Xueguang Lyu , Christopher Amato

Modern multi-layer perceptron (MLP) models have shown competitive results in learning visual representations without self-attention. However, existing MLP models are not good at capturing local details and lack prior knowledge of human body…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Wenhao Li , Mengyuan Liu , Hong Liu , Tianyu Guo , Ti Wang , Hao Tang , Nicu Sebe

Accurate prediction of real-world pedestrian trajectories is crucial for a wide range of robot-related applications. Recent approaches typically adopt graph-based or transformer-based frameworks to model interactions. Despite their…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Ruochen Li , Ziyi Chang , Junyan Hu , Jiannan Li , Amir Atapour-Abarghouei , Hubert P. H. Shum

Multi-Agent Reinforcement Learning (MARL) is a branch of machine learning in which agents interact and learn optimal policies through trial and error, addressing complex scenarios where multiple agents interact and learn in the same…

Human-Computer Interaction · Computer Science 2025-12-03 Changhee Lee , Jeongmin Rhee , DongHwa Shin

This paper introduces a novel approach to Social Group Activity Recognition (SoGAR) using Self-supervised Transformers network that can effectively utilize unlabeled video data. To extract spatio-temporal information, we created local and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Naga VS Raviteja Chappa , Pha Nguyen , Alexander H Nelson , Han-Seok Seo , Xin Li , Page Daniel Dobbs , Khoa Luu

Embodied robotic AI systems designed to manage complex daily tasks rely on a task planner to understand and decompose high-level tasks. While most research focuses on enhancing the task-understanding abilities of LLMs/VLMs through…

Robotics · Computer Science 2025-12-23 Zhenglong Guo , Yiming Zhao , Feng Jiang , Heng Jin , Zongbao Feng , Jianbin Zhou , Siyuan Xu

Multi-person motion prediction is an emerging and intricate task with broad real-world applications. Unlike single person motion prediction, it considers not just the skeleton structures or human trajectories but also the interactions…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Kehua Qu , Rui Ding , Jin Tang