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Unsupervised domain adaptation aims to train a classification model from the labeled source domain for the unlabeled target domain. Since the data distributions of the two domains are different, the model often performs poorly on the target…

Computer Vision and Pattern Recognition · Computer Science 2022-03-10 Jieren Cheng , Le Liu , Xiangyan Tang , Wenxuan Tu , Boyi Liu , Ke Zhou , Qiaobo Da , Yue Yang

Unsupervised domain adaptation (UDA) is one of the key technologies to solve a problem where it is hard to obtain ground truth labels needed for supervised learning. In general, UDA assumes that all samples from source and target domains…

Image and Video Processing · Electrical Eng. & Systems 2022-09-07 Satoshi Kondo

Semi-Supervised Learning (SSL) approaches have been an influential framework for the usage of unlabeled data when there is not a sufficient amount of labeled data available over the course of training. SSL methods based on Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Fariborz Taherkhani , Hadi Kazemi , Ali Dabouei , Jeremy Dawson , Nasser M. Nasrabadi

In domain adaptation, there are two popular paradigms: Unsupervised Domain Adaptation (UDA), which aligns distributions using source data, and Source-Free Domain Adaptation (SFDA), which leverages pre-trained source models without accessing…

Machine Learning · Computer Science 2024-11-26 Fan Wang , Zhongyi Han , Xingbo Liu , Xin Gao , Yilong Yin

Conventional unsupervised domain adaptation (UDA) methods need to access both labeled source samples and unlabeled target samples simultaneously to train the model. While in some scenarios, the source samples are not available for the…

Machine Learning · Computer Science 2021-09-10 Yuntao Du , Haiyang Yang , Mingcai Chen , Juan Jiang , Hongtao Luo , Chongjun Wang

Unsupervised domain adaptation (UDA) aims to estimate a transferable model for unlabeled target domains by exploiting labeled source data. Optimal Transport (OT) based methods have recently been proven to be a promising solution for UDA…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Yingxue Xu , Guihua Wen , Yang Hu , Pei Yang

Optimal Transport (OT) has proven effective for domain adaptation (DA) by aligning distributions across domains with differing statistical properties. Building on the approach of Courty et al. (2016), who mapped source data to the target…

Machine Learning · Statistics 2025-05-15 Brian Britos , Mathias Bourel

In this paper, we propose a novel approach for unsupervised domain adaptation, that relates notions of optimal transport, learning probability measures and unsupervised learning. The proposed approach, HOT-DA, is based on a hierarchical…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Mourad El Hamri , Younès Bennani , Issam Falih , Hamid Ahaggach

Effort in releasing large-scale datasets may be compromised by privacy and intellectual property considerations. A feasible alternative is to release pre-trained models instead. While these models are strong on their original task (source…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Yunzhong Hou , Liang Zheng

Source-free object detection (SFOD) aims to adapt a source-trained detector to an unlabeled target domain without access to the labeled source data. Current SFOD methods utilize a threshold-based pseudo-label approach in the adaptation…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Zhihong Chen , Zilei Wang , Yixin Zhang

Unsupervised domain adaptation (UDA) has achieved remarkable success in fault diagnosis, bringing significant benefits to diverse industrial applications. While most UDA methods focus on cross-working condition scenarios where the source…

Machine Learning · Computer Science 2024-05-29 Ziyan Wang , Mohamed Ragab , Wenmian Yang , Min Wu , Sinno Jialin Pan , Jie Zhang , Zhenghua Chen

Semi-supervised domain adaptation (SSDA) aims at training a high-performance model for a target domain using few labeled target data, many unlabeled target data, and plenty of auxiliary data from a source domain. Previous works in SSDA…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Lingfei Deng , Changming Zhao , Zhenbang Du , Kun Xia , Dongrui Wu

In this paper, we introduce a novel framework for the challenging problem of One-Shot Unsupervised Domain Adaptation (OSUDA), which aims to adapt to a target domain with only a single unlabeled target sample. Unlike existing approaches that…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Julio Ivan Davila Carrazco , Suvarna Kishorkumar Kadam , Pietro Morerio , Alessio Del Bue , Vittorio Murino

As acquiring manual labels on data could be costly, unsupervised domain adaptation (UDA), which transfers knowledge learned from a rich-label dataset to the unlabeled target dataset, is gaining increasing popularity. While extensive studies…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Wanqing Zhu , Jia-Li Yin , Bo-Hao Chen , Ximeng Liu

Deep Neural Networks have significantly impacted many computer vision tasks. However, their effectiveness diminishes when test data distribution (target domain) deviates from the one of training data (source domain). In situations where…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Andrea Maracani , Lorenzo Rosasco , Lorenzo Natale

Short text clustering has gained significant attention in the data mining community. However, the limited valuable information contained in short texts often leads to low-discriminative representations, increasing the difficulty of…

Machine Learning · Computer Science 2026-03-16 Zhihao Yao

This paper deals with the unsupervised domain adaptation problem, where one wants to estimate a prediction function $f$ in a given target domain without any labeled sample by exploiting the knowledge available from a source domain where…

Machine Learning · Statistics 2017-10-24 Nicolas Courty , Rémi Flamary , Amaury Habrard , Alain Rakotomamonjy

Unsupervised domain adaptation~(UDA) aims at reducing the distribution discrepancy when transferring knowledge from a labeled source domain to an unlabeled target domain. Previous UDA methods assume that the source and target domains share…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Chuan-Xian Ren , Pengfei Ge , Peiyi Yang , Shuicheng Yan

Unsupervised Domain Adaptive Object Detection (UDA-OD) uses unlabelled data to improve the reliability of robotic vision systems in open-world environments. Previous approaches to UDA-OD based on self-training have been effective in…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Nicolas Harvey Chapman , Feras Dayoub , Will Browne , Christopher Lehnert

In many scenarios of practical interest, labeled data from a target distribution are scarce while labeled data from a related source distribution are abundant. One particular setting of interest arises when the target label space is a…

Machine Learning · Computer Science 2025-06-04 Jayadev Naram , Fredrik Hellström , Ziming Wang , Rebecka Jörnsten , Giuseppe Durisi