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The focus of this study is on Unsupervised Continual Learning (UCL), as it presents an alternative to Supervised Continual Learning which needs high-quality manual labeled data. The experiments under the UCL paradigm indicate a phenomenon…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Chen Cheng , Jingkuan Song , Xiaosu Zhu , Junchen Zhu , Lianli Gao , Hengtao Shen

Cross-modality person re-identification is a challenging problem which retrieves a given pedestrian image in RGB modality among all the gallery images in infrared modality. The task can address the limitation of RGB-based person Re-ID in…

计算机视觉与模式识别 · 计算机科学 2019-10-23 Yuanxin Zhu , Zhao Yang , Li Wang , Sai Zhao , Xiao Hu , Dapeng Tao

Contrastive learning has emerged as an essential approach for self-supervised learning in visual representation learning. The central objective of contrastive learning is to maximize the similarities between two augmented versions of an…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Hengkui Dong , Xianzhong Long , Yun Li , Lei Chen

Self-supervised learning enables networks to learn discriminative features from massive data itself. Most state-of-the-art methods maximize the similarity between two augmentations of one image based on contrastive learning. By utilizing…

计算机视觉与模式识别 · 计算机科学 2023-07-05 Jidong Ge , Yuxiang Liu , Jie Gui , Lanting Fang , Ming Lin , James Tin-Yau Kwok , LiGuo Huang , Bin Luo

Unsupervised domain adaptation person re-identification (Re-ID) aims to identify pedestrian images within an unlabeled target domain with an auxiliary labeled source-domain dataset. Many existing works attempt to recover reliable identity…

计算机视觉与模式识别 · 计算机科学 2023-01-31 Qiong Wu , Jiahan Li , Pingyang Dai , Qixiang Ye , Liujuan Cao , Yongjian Wu , Rongrong Ji

Learning discriminative image representations plays a vital role in long-tailed image classification because it can ease the classifier learning in imbalanced cases. Given the promising performance contrastive learning has shown recently in…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Peng Wang , Kai Han , Xiu-Shen Wei , Lei Zhang , Lei Wang

Recommender systems are widely deployed in various web environments, and self-supervised learning (SSL) has recently attracted significant attention in this field. Contrastive learning (CL) stands out as a major SSL paradigm due to its…

信息检索 · 计算机科学 2025-01-17 Yu Zhang , Lei Sang , Yi Zhang , Yiwen Zhang , Yun Yang

Unsupervised image clustering methods often introduce alternative objectives to indirectly train the model and are subject to faulty predictions and overconfident results. To overcome these challenges, the current research proposes an…

计算机视觉与模式识别 · 计算机科学 2021-03-30 Sungwon Park , Sungwon Han , Sundong Kim , Danu Kim , Sungkyu Park , Seunghoon Hong , Meeyoung Cha

Decentralized learning has been advocated and widely deployed to make efficient use of distributed datasets, with an extensive focus on supervised learning (SL) problems. Unfortunately, the majority of real-world data are unlabeled and can…

机器学习 · 计算机科学 2023-03-01 Lirui Wang , Kaiqing Zhang , Yunzhu Li , Yonglong Tian , Russ Tedrake

In real-world video surveillance applications, person re-identification (ReID) suffers from the effects of occlusions and detection errors. Despite recent advances, occlusions continue to corrupt the features extracted by state-of-art CNN…

计算机视觉与模式识别 · 计算机科学 2023-07-25 Madhu Kiran , R Gnana Praveen , Le Thanh Nguyen-Meidine , Soufiane Belharbi , Louis-Antoine Blais-Morin , Eric Granger

Clustering-based methods, which alternate between the generation of pseudo labels and the optimization of the feature extraction network, play a dominant role in both unsupervised learning (USL) and unsupervised domain adaptive (UDA) person…

计算机视觉与模式识别 · 计算机科学 2022-06-15 Tianyi Yan , Kuan Zhu , Haiyun guo , Guibo Zhu , Ming Tang , Jinqiao Wang

Learning semantic-rich representations from raw unlabeled time series data is critical for downstream tasks such as classification and forecasting. Contrastive learning has recently shown its promising representation learning capability in…

机器学习 · 计算机科学 2023-03-31 Qianwen Meng , Hangwei Qian , Yong Liu , Lizhen Cui , Yonghui Xu , Zhiqi Shen

Despite their consistent performance improvements, cross-modal retrieval models (e.g., CLIP) show degraded performances with retrieving keys composed of fused image-text modality (e.g., Wikipedia pages with both images and text). To address…

计算机视觉与模式识别 · 计算机科学 2025-10-01 Jungsoo Lee , Janghoon Cho , Hyojin Park , Munawar Hayat , Kyuwoong Hwang , Fatih Porikli , Sungha Choi

Unsupervised learning is a challenging task due to the lack of labels. Multiple Object Tracking (MOT), which inevitably suffers from mutual object interference, occlusion, etc., is even more difficult without label supervision. In this…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Sha Meng , Dian Shao , Jiacheng Guo , Shan Gao

Images with different resolutions are ubiquitous in public person re-identification (ReID) datasets and real-world scenes, it is thus crucial for a person ReID model to handle the image resolution variations for improving its generalization…

计算机视觉与模式识别 · 计算机科学 2018-10-25 Zijie Zhuang , Haizhou Ai , Long Chen , Chong Shang

Person re-identification (re-ID) is of great importance to video surveillance systems by estimating the similarity between a pair of cross-camera person shorts. Current methods for estimating such similarity require a large number of…

计算机视觉与模式识别 · 计算机科学 2022-07-28 Lin Wu , Deyin Liu , Wenying Zhang , Dapeng Chen , Zongyuan Ge , Farid Boussaid , Mohammed Bennamoun , Jialie Shen

While deep face recognition has benefited significantly from large-scale labeled data, current research is focused on leveraging unlabeled data to further boost performance, reducing the cost of human annotation. Prior work has mostly been…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Aruni RoyChowdhury , Xiang Yu , Kihyuk Sohn , Erik Learned-Miller , Manmohan Chandraker

Recently, vehicle re-identification methods based on deep learning constitute remarkable achievement. However, this achievement requires large-scale and well-annotated datasets. In constructing the dataset, assigning globally available…

计算机视觉与模式识别 · 计算机科学 2021-09-15 Jongmin Yu , Junsik Kim , Minkyung Kim , Hyeontaek Oh

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

机器学习 · 计算机科学 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Heterogeneous graphs (HGs) are composed of multiple types of nodes and edges, making it more effective in capturing the complex relational structures inherent in the real world. However, in real-world scenarios, labeled data is often…

机器学习 · 计算机科学 2025-08-20 Ruobing Jiang , Yacong Li , Haobing Liu , Yanwei Yu