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The sequential interaction network usually find itself in a variety of applications, e.g., recommender system. Herein, inferring future interaction is of fundamental importance, and previous efforts are mainly focused on the dynamics in the…

Machine Learning · Computer Science 2024-01-03 Li Sun , Junda Ye , Jiawei Zhang , Yong Yang , Mingsheng Liu , Feiyang Wang , Philip S. Yu

Accurate interpretation of electrocardiogram (ECG) remains challenging due to the scarcity of labeled data and the high cost of expert annotation. Self-supervised learning (SSL) offers a promising solution by enabling models to learn…

Artificial Intelligence · Computer Science 2026-04-14 Zehao Qin , Xiaojian Lin , Ping Zhang , Hongliang Wu , Xinkang Wang , Guangling Liu , Bo Chen , Wenming Yang , Guijin Wang

Considering the close connection between action recognition and human pose estimation, we design a Collaboratively Self-supervised Video Representation (CSVR) learning framework specific to action recognition by jointly factoring in…

Computer Vision and Pattern Recognition · Computer Science 2025-02-03 Jie Zhang , Zhifan Wan , Lanqing Hu , Stephen Lin , Shuzhe Wu , Shiguang Shan

Dynamics of human body skeletons convey significant information for human action recognition. Conventional approaches for modeling skeletons usually rely on hand-crafted parts or traversal rules, thus resulting in limited expressive power…

Computer Vision and Pattern Recognition · Computer Science 2018-01-26 Sijie Yan , Yuanjun Xiong , Dahua Lin

In skeleton-based human activity understanding, existing methods often adopt the contrastive learning paradigm to construct a discriminative feature space. However, many of these approaches fail to exploit the structural inter-class…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Hongda Liu , Yunfan Liu , Min Ren , Lin Sui , Yunlong Wang , Zhenan Sun

Contrastive learning has nearly closed the gap between supervised and self-supervised learning of image representations, and has also been explored for videos. However, prior work on contrastive learning for video data has not explored the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Ishan Dave , Rohit Gupta , Mamshad Nayeem Rizve , Mubarak Shah

Human gesture recognition has assumed a capital role in industrial applications, such as Human-Machine Interaction. We propose an approach for segmentation and classification of dynamic gestures based on a set of handcrafted features, which…

Computer Vision and Pattern Recognition · Computer Science 2020-08-27 André Brás , Miguel Simão , Pedro Neto

Recently skeleton-based action recognition has made signif-icant progresses in the computer vision community. Most state-of-the-art algorithms are based on Graph Convolutional Networks (GCN), andtarget at improving the network structure of…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Zeshi Yang , Kangkang Yin

Skeleton-based action recognition has achieved remarkable performance with the development of graph convolutional networks (GCNs). However, most of these methods tend to construct complex topology learning mechanisms while neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Zeyu Liang , Hailun Xia , Naichuan Zheng , Huan Xu

Skeleton-based human action recognition has achieved a great interest in recent years, as skeleton data has been demonstrated to be robust to illumination changes, body scales, dynamic camera views, and complex background. Nevertheless, an…

Computer Vision and Pattern Recognition · Computer Science 2021-06-24 Chiara Plizzari , Marco Cannici , Matteo Matteucci

Traditional approaches in unsupervised or self supervised learning for skeleton-based action classification have concentrated predominantly on the dynamic aspects of skeletal sequences. Yet, the intricate interaction between the moving and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Shanaka Ramesh Gunasekara , Wanqing Li , Philip Ogunbona , Jack Yang

Skeleton-based action recognition has gained significant attention for its ability to efficiently represent spatiotemporal information in a lightweight format. Most existing approaches use graph-based models to process skeleton sequences,…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Jushang Qiu , Lei Wang

Scene coordinate regression (SCR) methods are a family of visual localization methods that directly regress 2D-3D matches for camera pose estimation. They are effective in small-scale scenes but face significant challenges in large-scale…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Fangjinhua Wang , Xudong Jiang , Silvano Galliani , Christoph Vogel , Marc Pollefeys

Person re-identification (re-ID) via 3D skeleton data is an emerging topic with prominent advantages. Existing methods usually design skeleton descriptors with raw body joints or perform skeleton sequence representation learning. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Haocong Rao , Chunyan Miao

Skeleton-based action recognition has attracted considerable attention due to its compact representation of the human body's skeletal sructure. Many recent methods have achieved remarkable performance using graph convolutional networks…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Jungho Lee , Minhyeok Lee , Suhwan Cho , Sungmin Woo , Sungjun Jang , Sangyoun Lee

Graph Convolutional Networks (GCNs), which model skeleton data as graphs, have obtained remarkable performance for skeleton-based action recognition. Particularly, the temporal dynamic of skeleton sequence conveys significant information in…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Jianan Li , Xuemei Xie , Zhifu Zhao , Yuhan Cao , Qingzhe Pan , Guangming Shi

With the prevalence of accessible depth sensors, dynamic human body skeletons have attracted much attention as a robust modality for action recognition. Previous methods model skeletons based on RNN or CNN, which has limited expressive…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 Xiang Gao , Wei Hu , Jiaxiang Tang , Jiaying Liu , Zongming Guo

Recently, there have been efforts to improve the performance in sign language recognition by designing self-supervised learning methods. However, these methods capture limited information from sign pose data in a frame-wise learning manner,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Weichao Zhao , Wengang Zhou , Hezhen Hu , Min Wang , Houqiang Li

A steady momentum of innovations and breakthroughs has convincingly pushed the limits of unsupervised image representation learning. Compared to static 2D images, video has one more dimension (time). The inherent supervision existing in…

Computer Vision and Pattern Recognition · Computer Science 2021-01-28 Ting Yao , Yiheng Zhang , Zhaofan Qiu , Yingwei Pan , Tao Mei

The dichotomy between the challenging nature of obtaining annotations for activities, and the more straightforward nature of data collection from wearables, has resulted in significant interest in the development of techniques that utilize…

Machine Learning · Computer Science 2022-11-14 Harish Haresamudram , Irfan Essa , Thomas Ploetz
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