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Unsupervised Domain Adaptation (UDA) addresses the problem of performance degradation due to domain shift between training and testing sets, which is common in computer vision applications. Most existing UDA approaches are based on…

计算机视觉与模式识别 · 计算机科学 2019-05-14 Songsong Wu , Yan Yan , Hao Tang , Jianjun Qian , Jian Zhang , Xiao-Yuan Jing

Contrastive self-supervised learning (CSL) based on instance discrimination typically attracts positive samples while repelling negatives to learn representations with pre-defined binary self-supervision. However, vanilla CSL is inadequate…

计算机视觉与模式识别 · 计算机科学 2022-11-04 Yifei Zhang , Chang Liu , Yu Zhou , Weiping Wang , Qixiang Ye , Xiangyang Ji

Unsupervised domain adaptation (UDA) refers to a domain adaptation framework in which a learning model is trained based on the labeled samples on the source domain and unlabeled ones in the target domain. The dominant existing methods in…

机器学习 · 计算机科学 2024-12-31 Anh T Nguyen , Lam Tran , Anh Tong , Tuan-Duy H. Nguyen , Toan Tran

In an effort to reduce annotation costs in action recognition, unsupervised video domain adaptation methods have been proposed that aim to adapt a predictive model from a labelled dataset (i.e., source domain) to an unlabelled dataset…

计算机视觉与模式识别 · 计算机科学 2023-01-10 Giacomo Zara , Victor Guilherme Turrisi da Costa , Subhankar Roy , Paolo Rota , Elisa Ricci

Advanced self-supervised visual representation learning methods rely on the instance discrimination (ID) pretext task. We point out that the ID task has an implicit semantic consistency (SC) assumption, which may not hold in unconstrained…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Yucheng Zhao , Guangting Wang , Chong Luo , Wenjun Zeng , Zheng-Jun Zha

Class imbalance naturally exists when train and test models in different domains. Unsupervised domain adaptation (UDA) augments model performance with only accessible annotations from the source domain and unlabeled data from the target…

计算与语言 · 计算机科学 2022-05-27 Yuexin Wu , Xiaolei Huang

Unsupervised domain adaptation (UDA) has proven to be highly effective in transferring knowledge from a label-rich source domain to a label-scarce target domain. However, the presence of additional novel categories in the target domain has…

计算机视觉与模式识别 · 计算机科学 2023-07-25 Zelin Zang , Lei Shang , Senqiao Yang , Fei Wang , Baigui Sun , Xuansong Xie , Stan Z. Li

Unsupervised Domain Adaptation (UDA) has emerged as a powerful solution for the domain shift problem via transferring the knowledge from a labeled source domain to a shifted unlabeled target domain. Despite the prevalence of UDA for visual…

机器学习 · 计算机科学 2023-07-28 Emadeldeen Eldele , Mohamed Ragab , Zhenghua Chen , Min Wu , Chee-Keong Kwoh , Xiaoli Li

Many existing unsupervised domain adaptation (UDA) methods primarily focus on covariate shift, limiting their effectiveness in imbalanced domain adaptation (IDA) where both covariate shift and label shift coexist. Recent IDA methods have…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Xiaona Sun , Zhenyu Wu , Zhiqiang Zhan , Yang Ji

Multi-Source Unsupervised Domain Adaptation (multi-source UDA) aims to learn a model from several labeled source domains while performing well on a different target domain where only unlabeled data are available at training time. To align…

计算机视觉与模式识别 · 计算机科学 2021-09-28 Marin Scalbert , Maria Vakalopoulou , Florent Couzinié-Devy

Unsupervised feature learning has made great strides with contrastive learning based on instance discrimination and invariant mapping, as benchmarked on curated class-balanced datasets. However, natural data could be highly correlated and…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Xudong Wang , Ziwei Liu , Stella X. Yu

Unsupervised domain adaptation (UDA) provides a strategy for improving machine learning performance in data-rich (target) domains where ground truth labels are inaccessible but can be found in related (source) domains. In cases where…

机器学习 · 计算机科学 2023-07-24 Garrett Wilson , Janardhan Rao Doppa , Diane J. Cook

Semantic segmentation is essential for comprehending images, but the process necessitates a substantial amount of detailed annotations at the pixel level. Acquiring such annotations can be costly in the real-world. Unsupervised domain…

计算机视觉与模式识别 · 计算机科学 2025-01-17 Jianzi Xiang , Cailu Wan , Zhu Cao

Despite recent success, most contrastive self-supervised learning methods are domain-specific, relying heavily on data augmentation techniques that require knowledge about a particular domain, such as image cropping and rotation. To…

机器学习 · 计算机科学 2021-07-21 Vikas Verma , Minh-Thang Luong , Kenji Kawaguchi , Hieu Pham , Quoc V. Le

Unsupervised domain adaptation (UDA) methods have been broadly utilized to improve the models' adaptation ability in general computer vision. However, different from the natural images, there exist huge semantic gaps for the nuclei from…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Canran Li , Dongnan Liu , Haoran Li , Zheng Zhang , Guangming Lu , Xiaojun Chang , Weidong Cai

Unsupervised object discovery (UOD) refers to the task of discriminating the whole region of objects from the background within a scene without relying on labeled datasets, which benefits the task of bounding-box-level localization and…

计算机视觉与模式识别 · 计算机科学 2023-07-10 Yunqiu Lv , Jing Zhang , Nick Barnes , Yuchao Dai

Unsupervised Domain Adaptation (UDA) essentially trades a model's performance on a source domain for improving its performance on a target domain. To overcome this, Unsupervised Domain Expansion (UDE) has been introduced, which adapts the…

计算机视觉与模式识别 · 计算机科学 2025-12-29 Hailan Lin , Qijie Wei , Kaibin Tian , Ruixiang Zhao , Xirong Li

Unsupervised domain adaptation (UDA) for semantic segmentation has been well-studied in recent years. However, most existing works largely neglect the local regional consistency across different domains and are less robust to changes in…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Qianyu Zhou , Chuyun Zhuang , Ran Yi , Xuequan Lu , Lizhuang Ma

Expanding visual categorization into a novel domain without the need of extra annotation has been a long-term interest for multimedia intelligence. Previously, this challenge has been approached by unsupervised domain adaptation (UDA).…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Jie Wang , Kaibin Tian , Dayong Ding , Gang Yang , Xirong Li

Unsupervised domain adaptation (UDA) aims to transfer and adapt knowledge from a labeled source domain to an unlabeled target domain. Traditionally, subspace-based methods form an important class of solutions to this problem. Despite their…

机器学习 · 计算机科学 2022-01-07 Kowshik Thopalli , Jayaraman J Thiagarajan , Rushil Anirudh , Pavan K Turaga