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Models capable of leveraging unlabelled data are crucial in overcoming large distribution gaps between the acquired datasets across different imaging devices and configurations. In this regard, self-training techniques based on…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Negin Ghamsarian , Javier Gamazo Tejero , Pablo Márquez Neila , Sebastian Wolf , Martin Zinkernagel , Klaus Schoeffmann , Raphael Sznitman

Recent studies have shown that pseudo labels can contribute to unsupervised domain adaptation (UDA) for speaker verification. Inspired by the self-training strategies that use an existing classifier to label the unlabeled data for…

Machine Learning · Computer Science 2023-06-21 Haiquan Mao , Feng Hong , Man-wai Mak

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

Unsupervised contrastive learning has gained increasing attention in the latest research and has proven to be a powerful method for learning representations from unlabeled data. However, little theoretical analysis was known for this…

Machine Learning · Computer Science 2021-06-01 Zixin Wen

Although recent semantic segmentation methods have made remarkable progress, they still rely on large amounts of annotated training data, which are often infeasible to collect in the autonomous driving scenario. Previous works usually…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Adriano Cardace , Luca De Luigi , Pierluigi Zama Ramirez , Samuele Salti , Luigi Di Stefano

The accuracy of deep learning (e.g., convolutional neural networks) for an image classification task critically relies on the amount of labeled training data. Aiming to solve an image classification task on a new domain that lacks labeled…

Computer Vision and Pattern Recognition · Computer Science 2019-01-01 Xianghong Fang , Haoli Bai , Ziyi Guo , Bin Shen , Steven Hoi , Zenglin Xu

Unsupervised domain adaptive segmentation aims to improve the segmentation accuracy of models on target domains without relying on labeled data from those domains. This approach is crucial when labeled target domain data is scarce or…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Mu Chen , Zhedong Zheng , Yi Yang

Semantic segmentation plays a critical role in enabling intelligent vehicles to comprehend their surrounding environments. However, deep learning-based methods usually perform poorly in domain shift scenarios due to the lack of labeled data…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Weihao Yan , Yeqiang Qian , Xingyuan Chen , Hanyang Zhuang , Chunxiang Wang , Ming Yang

Large-scale labeled training datasets have enabled deep neural networks to excel on a wide range of benchmark vision tasks. However, in many applications it is prohibitively expensive or time-consuming to obtain large quantities of labeled…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Sicheng Zhao , Bichen Wu , Joseph Gonzalez , Sanjit A. Seshia , Kurt Keutzer

Deep learning-based object detectors have shown remarkable improvements. However, supervised learning-based methods perform poorly when the train data and the test data have different distributions. To address the issue, domain adaptation…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Seunghyeon Kim , Jaehoon Choi , Taekyung Kim , Changick Kim

Deep learning methods have shown promise in unsupervised domain adaptation, which aims to leverage a labeled source domain to learn a classifier for the unlabeled target domain with a different distribution. However, such methods typically…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Zhijie Deng , Yucen Luo , Jun Zhu

The supervised training of deep networks for semantic segmentation requires a huge amount of labeled real world data. To solve this issue, a commonly exploited workaround is to use synthetic data for training, but deep networks show a…

Computer Vision and Pattern Recognition · Computer Science 2020-03-13 Marco Toldo , Umberto Michieli , Gianluca Agresti , Pietro Zanuttigh

Unsupervised Domain Adaptation for semantic segmentation has gained immense popularity since it can transfer knowledge from simulation to real (Sim2Real) by largely cutting out the laborious per pixel labeling efforts at real. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Inkyu Shin , Kwanyong Park , Sanghyun Woo , In So Kweon

Instance contrast for unsupervised representation learning has achieved great success in recent years. In this work, we explore the idea of instance contrastive learning in unsupervised domain adaptation (UDA) and propose a novel Category…

Computer Vision and Pattern Recognition · Computer Science 2022-03-18 Jiaxing Huang , Dayan Guan , Aoran Xiao , Shijian Lu , Ling Shao

This paper proposes an unsupervised cross-modality domain adaptation approach based on pixel alignment and self-training. Pixel alignment transfers ceT1 scans to hrT2 modality, helping to reduce domain shift in the training segmentation…

Computer Vision and Pattern Recognition · Computer Science 2021-09-30 Hexin Dong , Fei Yu , Jie Zhao , Bin Dong , Li Zhang

Standard Unsupervised Domain Adaptation (UDA) aims to transfer knowledge from a labeled source domain to an unlabeled target but usually requires simultaneous access to both source and target data. Moreover, UDA approaches commonly assume…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Mattia Litrico , Davide Talon , Sebastiano Battiato , Alessio Del Bue , Mario Valerio Giuffrida , Pietro Morerio

Unsupervised Domain Adaptation (UDA), which aims to explore the transferrable features from a well-labeled source domain to a related unlabeled target domain, has been widely progressed. Nevertheless, as one of the mainstream, existing…

Computer Vision and Pattern Recognition · Computer Science 2023-02-06 Yumin Zhang , Yajun Gao , Hongliu Li , Ating Yin , Duzhen Zhang , Xiuyi Chen

Contrastive learning is among the most popular and powerful approaches for self-supervised representation learning, where the goal is to map semantically similar samples close together while separating dissimilar ones in the latent space.…

Machine Learning · Statistics 2025-12-03 Ali Alvandi , Mina Rezaei

Sleep staging is of great importance in the diagnosis and treatment of sleep disorders. Recently, numerous data-driven deep learning models have been proposed for automatic sleep staging. They mainly train the model on a large public…

Machine Learning · Computer Science 2022-07-07 Emadeldeen Eldele , Mohamed Ragab , Zhenghua Chen , Min Wu , Chee-Keong Kwoh , Xiaoli Li , Cuntai Guan

Recent works on unsupervised domain adaptation (UDA) focus on the selection of good pseudo-labels as surrogates for the missing labels in the target data. However, source domain bias that deteriorates the pseudo-labels can still exist since…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Can Zhang , Gim Hee Lee