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Domain shift poses a fundamental challenge in time series analysis, where models trained on source domain often fail dramatically when applied in target domain with different yet similar distributions. While current unsupervised domain…

机器学习 · 计算机科学 2025-08-07 Rongyao Cai , Ming Jin , Qingsong Wen , Kexin Zhang

In time series anomaly detection (TSAD), the scarcity of labeled data poses a challenge to the development of accurate models. Unsupervised domain adaptation (UDA) offers a solution by leveraging labeled data from a related domain to detect…

A foundational requirement of a deployed ML model is to generalize to data drawn from a testing distribution that is different from training. A popular solution to this problem is to adapt a pre-trained model to novel domains using only…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Kowshik Thopalli , Pavan Turaga , Jayaraman J. Thiagarajan

Unsupervised domain adaptation (UDA) methods facilitate the transfer of models to target domains without labels. However, these methods necessitate a labeled target validation set for hyper-parameter tuning and model selection. In this…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Minghao Chen , Zepeng Gao , Shuai Zhao , Qibo Qiu , Wenxiao Wang , Binbin Lin , Xiaofei He

Unsupervised domain adaptation (UDA) involves adapting a model trained on a label-rich source domain to an unlabeled target domain. However, in real-world scenarios, the absence of target-domain labels makes it challenging to evaluate the…

计算机视觉与模式识别 · 计算机科学 2024-02-20 Jianfei Yang , Hanjie Qian , Yuecong Xu , Kai Wang , Lihua Xie

Machine learning algorithms have achieved remarkable success across various disciplines, use cases and applications, under the prevailing assumption that training and test samples are drawn from the same distribution. Consequently, these…

机器学习 · 计算机科学 2024-11-07 Zehao Xiao , Cees G. M. Snoek

Unsupervised Domain Adaptation (DA) is used to automatize the task of labeling data: an unlabeled dataset (target) is annotated using a labeled dataset (source) from a related domain. We cast domain adaptation as the problem of finding…

机器学习 · 统计学 2018-03-22 Twan van Laarhoven , Elena Marchiori

Most research on domain adaptation has focused on the purely unsupervised setting, where no labeled examples in the target domain are available. However, in many real-world scenarios, a small amount of labeled target data is available and…

计算机视觉与模式识别 · 计算机科学 2021-10-20 Yu Zhang , Gongbo Liang , Nathan Jacobs

Convolutional neural networks trained on publicly available medical imaging datasets (source domain) rarely generalise to different scanners or acquisition protocols (target domain). This motivates the active field of domain adaptation.…

图像与视频处理 · 电气工程与系统科学 2020-10-06 Thomas Varsavsky , Mauricio Orbes-Arteaga , Carole H. Sudre , Mark S. Graham , Parashkev Nachev , M. Jorge Cardoso

Deep learning has produced state-of-the-art results for a variety of tasks. While such approaches for supervised learning have performed well, they assume that training and testing data are drawn from the same distribution, which may not…

机器学习 · 计算机科学 2020-02-10 Garrett Wilson , Diane J. Cook

We consider the novel problem of unsupervised domain adaptation of source models, without access to the source data for semantic segmentation. Unsupervised domain adaptation aims to adapt a model learned on the labeled source data, to a new…

计算机视觉与模式识别 · 计算机科学 2021-12-07 Sujoy Paul , Ansh Khurana , Gaurav Aggarwal

Distribution shifts are all too common in real-world applications of machine learning. Domain adaptation (DA) aims to address this by providing various frameworks for adapting models to the deployment data without using labels. However, the…

机器学习 · 计算机科学 2023-09-08 Linus Ericsson , Da Li , Timothy M. Hospedales

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…

计算机视觉与模式识别 · 计算机科学 2022-10-05 Tiago Salvador , Kilian Fatras , Ioannis Mitliagkas , Adam Oberman

We extend semi-supervised learning to the problem of domain adaptation to learn significantly higher-accuracy models that train on one data distribution and test on a different one. With the goal of generality, we introduce AdaMatch, a…

机器学习 · 计算机科学 2022-03-16 David Berthelot , Rebecca Roelofs , Kihyuk Sohn , Nicholas Carlini , Alex Kurakin

Domain adaptation approaches seek to learn from a source domain and generalize it to an unseen target domain. At present, the state-of-the-art unsupervised domain adaptation approaches for subjective text classification problems leverage…

机器学习 · 计算机科学 2020-10-22 Jitin Krishnan , Hemant Purohit , Huzefa Rangwala

In the absence of labeled target data, unsupervised domain adaptation approaches seek to align the marginal distributions of the source and target domains in order to train a classifier for the target. Unsupervised domain alignment…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Sachin Chhabra , Hemanth Venkateswara , Baoxin Li

We propose a novel domain adaptive action detection approach and a new adaptation protocol that leverages the recent advancements in image-level unsupervised domain adaptation (UDA) techniques and handle vagaries of instance-level video…

计算机视觉与模式识别 · 计算机科学 2022-10-07 Yifan Lu , Gurkirt Singh , Suman Saha , Luc Van Gool

Unsupervised domain adaptation (UDA) enables the transfer of models trained on source domains to unlabeled target domains. However, transferring complex time series models presents challenges due to the dynamic temporal structure variations…

机器学习 · 计算机科学 2023-06-21 Huan He , Owen Queen , Teddy Koker , Consuelo Cuevas , Theodoros Tsiligkaridis , Marinka Zitnik

Recent advancements in deep learning-based wearable human action recognition (wHAR) have improved the capture and classification of complex motions, but adoption remains limited due to the lack of expert annotations and domain discrepancies…

计算机视觉与模式识别 · 计算机科学 2024-10-24 Indrajeet Ghosh , Garvit Chugh , Abu Zaher Md Faridee , Nirmalya Roy

Unsupervised domain adaptation (UDA) has successfully addressed the domain shift problem for visual applications. Yet, these approaches may have limited performance for time series data due to the following reasons. First, they mainly rely…

机器学习 · 计算机科学 2022-07-19 Mohamed Ragab , Emadeldeen Eldele , Zhenghua Chen , Min Wu , Chee-Keong Kwoh , Xiaoli Li