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In the face of the deep learning model's vulnerability to domain shift, source-free domain adaptation (SFDA) methods have been proposed to adapt models to new, unseen target domains without requiring access to source domain data. Although…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Uiwon Hwang , Jonghyun Lee , Juhyeon Shin , Sungroh Yoon

Unsupervised domain adaptation addresses the problem of classifying data in an unlabeled target domain, given labeled source domain data that share a common label space but follow a different distribution. Most of the recent methods take…

Computer Vision and Pattern Recognition · Computer Science 2023-02-24 Hui Tang , Yaowei Wang , Kui Jia

Unsupervised domain adaption aims to learn a powerful classifier for the target domain given a labeled source data set and an unlabeled target data set. To alleviate the effect of `domain shift', the major challenge in domain adaptation,…

Computer Vision and Pattern Recognition · Computer Science 2018-12-03 Yexun Zhang , Ya Zhang , Yanfeng Wang , Qi Tian

While unsupervised domain adaptation methods based on deep architectures have achieved remarkable success in many computer vision tasks, they rely on a strong assumption, i.e. labeled source data must be available. In this work we overcome…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Willi Menapace , Stéphane Lathuilière , Elisa Ricci

Source-free domain adaptation aims to adapt a source-trained model to an unlabeled target domain without access to the source data. It has attracted growing attention in recent years, where existing approaches focus on self-training that…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Idit Diamant , Amir Rosenfeld , Idan Achituve , Jacob Goldberger , Arnon Netzer

Domain adaptation is an important technique to alleviate performance degradation caused by domain shift, e.g., when training and test data come from different domains. Most existing deep adaptation methods focus on reducing domain shift by…

Machine Learning · Computer Science 2019-06-25 Jun Wen , Nenggan Zheng , Junsong Yuan , Zhefeng Gong , Changyou Chen

Numerous algorithms have been proposed for transferring knowledge from a label-rich domain (source) to a label-scarce domain (target). Almost all of them are proposed for a closed-set scenario, where the source and the target domain…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 Kuniaki Saito , Shohei Yamamoto , Yoshitaka Ushiku , Tatsuya Harada

Source-free domain adaptation (SFDA) involves adapting a model originally trained using a labeled dataset ({\em source domain}) to perform effectively on an unlabeled dataset ({\em target domain}) without relying on any source data during…

Computer Vision and Pattern Recognition · Computer Science 2024-12-20 Jing Wang , Wonho Bae , Jiahong Chen , Kuangen Zhang , Leonid Sigal , Clarence W. de Silva

Source-free domain adaptation (SFDA) aims to adapt a well-trained source model to an unlabelled target domain without accessing the source dataset, making it applicable in a variety of real-world scenarios. Existing SFDA methods ONLY assess…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Longxiang Tang , Kai Li , Chunming He , Yulun Zhang , Xiu Li

Unsupervised domain adaptation uses source data from different distributions to solve the problem of classifying data from unlabeled target domains. However, conventional methods require access to source data, which often raise concerns…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Yuqi Chen , Xiangbin Zhu , Yonggang Li , Yingjian Li , Haojie Fang

Unsupervised domain adaptation aims to generalize the supervised model trained on a source domain to an unlabeled target domain. Marginal distribution alignment of feature spaces is widely used to reduce the domain discrepancy between the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Pengfei Ge , Chuan-Xian Ren , Dao-Qing Dai , Hong Yan

Unsupervised domain adaptation (DA) has gained substantial interest in semantic segmentation. However, almost all prior arts assume concurrent access to both labeled source and unlabeled target, making them unsuitable for scenarios…

Computer Vision and Pattern Recognition · Computer Science 2022-05-13 Jogendra Nath Kundu , Akshay Kulkarni , Amit Singh , Varun Jampani , R. Venkatesh Babu

Domain adaptation (DA) aims to transfer the knowledge learned from a source domain to an unlabeled target domain. Some recent works tackle source-free domain adaptation (SFDA) where only a source pre-trained model is available for…

Computer Vision and Pattern Recognition · Computer Science 2021-10-11 Shiqi Yang , Yaxing Wang , Joost van de Weijer , Luis Herranz , Shangling Jui

In this paper, we propose a novel domain adaptation method that can be applied without target data. We consider the situation where domain shift is caused by a prior change of a specific factor and assume that we know how the prior changes…

Machine Learning · Computer Science 2019-03-14 Masato Ishii , Takashi Takenouchi , Masashi Sugiyama

Most visual recognition methods implicitly assume the data distribution remains unchanged from training to testing. However, in practice domain shift often exists, where real-world factors such as lighting and sensor type change between…

Machine Learning · Computer Science 2015-07-30 Yongxin Yang , Timothy Hospedales

Source-Free Domain Adaptation (SFDA) is an emerging area of research that aims to adapt a model trained on a labeled source domain to an unlabeled target domain without accessing the source data. Most of the successful methods in this area…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Harsharaj Pathak , Vineeth N Balasubramanian

Existing methods for unsupervised domain adaptation often rely on minimizing some statistical distance between the source and target samples in the latent space. To avoid the sampling variability, class imbalance, and data-privacy concerns…

Machine Learning · Computer Science 2021-10-26 Korawat Tanwisuth , Xinjie Fan , Huangjie Zheng , Shujian Zhang , Hao Zhang , Bo Chen , Mingyuan Zhou

Applying an object detector, which is neither trained nor fine-tuned on data close to the final application, often leads to a substantial performance drop. In order to overcome this problem, it is necessary to consider a shift between…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Alexey Abramov , Christopher Bayer , Claudio Heller

We present a novel multiple-source unsupervised model for text classification under domain shift. Our model exploits the update rates in document representations to dynamically integrate domain encoders. It also employs a probabilistic…

Computation and Language · Computer Science 2022-03-22 Payam Karisani

Source-free domain adaptation has become popular because of its practical usefulness and no need to access source data. However, the adaptation process still takes a considerable amount of time and is predominantly based on optimization…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Ondrej Bohdal , Da Li , Timothy Hospedales