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Universal domain adaptation (UniDA) is a general unsupervised domain adaptation setting, which addresses both domain and label shifts in adaptation. Its main challenge lies in how to identify target samples in unshared or unknown classes.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Yunyun Wang , Yao Liu , Songcan Chen

Breakthroughs in unsupervised domain adaptation (uDA) can help in adapting models from a label-rich source domain to unlabeled target domains. Despite these advancements, there is a lack of research on how uDA algorithms, particularly those…

Machine Learning · Computer Science 2021-12-28 Shaoduo Gan , Akhil Mathur , Anton Isopoussu , Fahim Kawsar , Nadia Berthouze , Nicholas Lane

Unsupervised Domain Adaptation (UDA) aims at classifying unlabeled target images leveraging source labeled ones. In this work, we consider the Partial Domain Adaptation (PDA) variant, where we have extra source classes not present in the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Tiago Salvador , Kilian Fatras , Ioannis Mitliagkas , Adam Oberman

Federated learning improves data privacy and efficiency in machine learning performed over networks of distributed devices, such as mobile phones, IoT and wearable devices, etc. Yet models trained with federated learning can still fail to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Xingchao Peng , Zijun Huang , Yizhe Zhu , Kate Saenko

Unsupervised domain adaptation (UDA) transfers knowledge from a label-rich source domain to a fully-unlabeled target domain. To tackle this task, recent approaches resort to discriminative domain transfer in virtue of pseudo-labels to…

Computer Vision and Pattern Recognition · Computer Science 2019-05-21 Chaoqi Chen , Weiping Xie , Wenbing Huang , Yu Rong , Xinghao Ding , Yue Huang , Tingyang Xu , Junzhou Huang

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…

Machine Learning · Computer Science 2024-12-31 Anh T Nguyen , Lam Tran , Anh Tong , Tuan-Duy H. Nguyen , Toan Tran

Domain adaptation considers the problem of generalising a model learnt using data from a particular source domain to a different target domain. Often it is difficult to find a suitable single source to adapt from, and one must consider…

Computation and Language · Computer Science 2020-04-20 Xia Cui , Danushka Bollegala

In many practical applications, it is often difficult and expensive to obtain large-scale labeled data to train state-of-the-art deep neural networks. Therefore, transferring the learned knowledge from a separate, labeled source domain to…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Sicheng Zhao , Hui Chen , Hu Huang , Pengfei Xu , Guiguang Ding

Due to privacy, storage, and other constraints, there is a growing need for unsupervised domain adaptation techniques in machine learning that do not require access to the data used to train a collection of source models. Existing methods…

Machine Learning · Computer Science 2023-06-01 Maohao Shen , Yuheng Bu , Gregory Wornell

Deep neural networks (DNNs) often perform poorly in the presence of domain shift and category shift. How to upcycle DNNs and adapt them to the target task remains an important open problem. Unsupervised Domain Adaptation (UDA), especially…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Sanqing Qu , Tianpei Zou , Florian Roehrbein , Cewu Lu , Guang Chen , Dacheng Tao , Changjun Jiang

In unsupervised domain adaptation (UDA), classifiers for the target domain (TD) are trained with clean labeled data from the source domain (SD) and unlabeled data from TD. However, in the wild, it is difficult to acquire a large amount of…

Machine Learning · Computer Science 2021-02-19 Feng Liu , Jie Lu , Bo Han , Gang Niu , Guangquan Zhang , Masashi Sugiyama

Federated learning (FL) commonly assumes that the server or some clients have labeled data, which is often impractical due to annotation costs and privacy concerns. Addressing this problem, we focus on a source-free domain adaptation task,…

Machine Learning · Computer Science 2025-10-09 Junki Mori , Kosuke Kihara , Taiki Miyagawa , Akinori F. Ebihara , Isamu Teranishi , Hisashi Kashima

Universal domain adaptation (UniDA) transfers knowledge from a labeled source domain to an unlabeled target domain, where label spaces may differ and the target domain may contain private classes. Previous UniDA methods primarily focused on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Dujin Lee , Sojung An , Jungmyung Wi , Kuniaki Saito , Donghyun Kim

To transfer the knowledge learned from a labeled source domain to an unlabeled target domain, many studies have worked on universal domain adaptation (UniDA), where there is no constraint on the label sets of the source domain and target…

Computer Vision and Pattern Recognition · Computer Science 2023-04-21 Qing Yu , Atsushi Hashimoto , Yoshitaka Ushiku

Unsupervised domain adaptation (UDA) aims to learn models for a target domain of unlabeled data by transferring knowledge from a labeled source domain. In the traditional UDA setting, labeled source data are assumed to be available for…

Machine Learning · Computer Science 2021-03-30 Haojian Zhang , Yabin Zhang , Kui Jia , Lei Zhang

In the pursuit of transferring a source model to a target domain without access to the source training data, Source-Free Domain Adaptation (SFDA) has been extensively explored across various scenarios, including Closed-set, Open-set,…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Song Tang , Wenxin Su , Mao Ye , Boyu Wang , Xiatian Zhu

Unsupervised domain adaptation (UDA) for semantic segmentation has been attracting attention recently, as it could be beneficial for various label-scarce real-world scenarios (e.g., robot control, autonomous driving, medical imaging, etc.).…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 KwanYong Park , Sanghyun Woo , Inkyu Shin , In So Kweon

Deep learning based medical image diagnosis has shown great potential in clinical medicine. However, it often suffers two major difficulties in practice: 1) only limited labeled samples are available due to expensive annotation costs over…

Machine Learning · Computer Science 2019-11-19 Yifan Zhang , Ying Wei , Peilin Zhao , Shuaicheng Niu , Qingyao Wu , Mingkui Tan , Junzhou Huang

Unsupervised Domain Adaptation (UDA) is a popular technique that aims to reduce the domain shift between two data distributions. It was successfully applied in computer vision and natural language processing. In the current work, we explore…

Computation and Language · Computer Science 2023-08-07 Răzvan-Alexandru Smădu , Sebastian-Vasile Echim , Dumitru-Clementin Cercel , Iuliana Marin , Florin Pop

Domain shift occurs when training (source) and test (target) data diverge in their distribution. Source-Free Domain Adaptation (SFDA) addresses this domain shift problem, aiming to adopt a trained model on the source domain to the target…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Hyeonwoo Cho , Chanmin Park , Dong-Hee Kim , Jinyoung Kim , Won Hwa Kim