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Exploring spatial-temporal dependencies from observed motions is one of the core challenges of human motion prediction. Previous methods mainly focus on dedicated network structures to model the spatial and temporal dependencies. This paper…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Chenxin Xu , Robby T. Tan , Yuhong Tan , Siheng Chen , Xinchao Wang , Yanfeng Wang

In recent years, action recognition has received much attention and wide application due to its important role in video understanding. Most of the researches on action recognition methods focused on improving the performance via various…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Pengcheng Dong , Wenbo Wan , Huaxiang Zhang , Shuai Li , Sujuan Hou , Jiande Sun

Accurate representation of the multiscale features in spatiotemporal physical systems using vision transformer (ViT) architectures requires extremely long, computationally prohibitive token sequences. To address this issue, we propose two…

Machine Learning · Computer Science 2024-12-31 Pei Zhang , M. Paul Laiu , Matthew Norman , Doug Stefanski , John Gounley

Zero-shot skeleton-based action recognition aims to recognize actions of unseen categories after training on data of seen categories. The key is to build the connection between visual and semantic space from seen to unseen classes. Previous…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Yujie Zhou , Wenwen Qiang , Anyi Rao , Ning Lin , Bing Su , Jiaqi Wang

Reliable fall detection in elderly care requires monitoring systems that are not only accurate but also capable of producing stable, interpretable explanations of motion dynamics, a requirement that existing post hoc explainability methods…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Mohammad Saleh , Azadeh Tabatabaei

Class-incremental learning is dedicated to the development of deep learning models that are capable of acquiring new knowledge while retaining previously learned information. Most methods focus on balanced data distribution for each task,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Linjie Li , Zhenyu Wu , Jiaming Liu , Yang Ji

Despite significant advances in video generation, synthesizing physically plausible human actions remains a persistent challenge, particularly in modeling fine-grained semantics and complex temporal dynamics. For instance, generating…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Dian Shao , Mingfei Shi , Shengda Xu , Haodong Chen , Yongle Huang , Binglu Wang

Learning-based solutions for long-tailed recognition face difficulties in generalizing on balanced test datasets. Due to imbalanced data prior, the learned \textit{a posteriori} distribution is biased toward the most frequent (head)…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 S Divakar Bhat , Amit More , Mudit Soni , Surbhi Agrawal

Current state-of-the-art methods for skeleton-based temporal action segmentation are predominantly supervised and require annotated data, which is expensive to collect. In contrast, existing unsupervised temporal action segmentation methods…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Uzay Gökay , Federico Spurio , Dominik R. Bach , Juergen Gall

We propose a distance supervised relation extraction approach for long-tailed, imbalanced data which is prevalent in real-world settings. Here, the challenge is to learn accurate "few-shot" models for classes existing at the tail of the…

Information Retrieval · Computer Science 2023-01-26 Ningyu Zhang , Shumin Deng , Zhanlin Sun , Guanying Wang , Xi Chen , Wei Zhang , Huajun Chen

There has been significant progress in creating machine learning models that identify objects in scenes along with their associated attributes and relationships; however, there is a large gap between the best models and human capabilities.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Tyler L. Hayes , Maximilian Nickel , Christopher Kanan , Ludovic Denoyer , Arthur Szlam

In this work, we address the challenging task of long-tailed image recognition. Previous long-tailed recognition methods commonly focus on the data augmentation or re-balancing strategy of the tail classes to give more attention to tail…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Weide Liu , Zhonghua Wu , Yiming Wang , Henghui Ding , Fayao Liu , Jie Lin , Guosheng Lin

This paper introduces a two-stage framework designed to enhance long-tail class incremental learning, enabling the model to progressively learn new classes, while mitigating catastrophic forgetting in the context of long-tailed data…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Jayateja Kalla , Soma Biswas

Real-world data often follows a long-tailed distribution, where a few head classes occupy most of the data and a large number of tail classes only contain very limited samples. In practice, deep models often show poor generalization…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Haolin Pan , Yong Guo , Mianjie Yu , Jian Chen

Remarkable progress has been made in object instance detection and segmentation in recent years. However, existing state-of-the-art methods are mostly evaluated with fairly balanced and class-limited benchmarks, such as Microsoft COCO…

Computer Vision and Pattern Recognition · Computer Science 2020-08-03 Tao Wang , Yu Li , Bingyi Kang , Junnan Li , Jun Hao Liew , Sheng Tang , Steven Hoi , Jiashi Feng

The Shapley value provides a principled foundation for data valuation, but exact computation is #P-hard due to the exponential coalition space. Existing accelerations remain global and ignore a structural property of modern predictors: for…

Machine Learning · Computer Science 2026-03-05 Xuan Yang , Hsi-Wen Chen , Ming-Syan Chen , Jian Pei

Among the existing modalities for 3D action recognition, 3D flow has been poorly examined, although conveying rich motion information cues for human actions. Presumably, its susceptibility to noise renders it intractable, thus challenging…

Computer Vision and Pattern Recognition · Computer Science 2023-06-26 Vasileios Magoulianitis , Athanasios Psaltis

The imbalanced distribution of long-tailed data presents a considerable challenge for deep learning models, as it causes them to prioritize the accurate classification of head classes but largely disregard tail classes. The biased decision…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Mengke Li , Zhikai Hu , Yang Lu , Weichao Lan , Yiu-ming Cheung , Hui Huang

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

Online action recognition is an important task for human centered intelligent services, which is still difficult to achieve due to the varieties and uncertainties of spatial and temporal scales of human actions. In this paper, we propose…

Computer Vision and Pattern Recognition · Computer Science 2020-11-04 Guoliang Liu , Qinghui Zhang , Yichao Cao , Junwei Li , Hao Wu , Guohui Tian