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Unsupervised Domain Adaptation (UDA) aims to adapt models trained on a source domain to a new target domain where no labelled data is available. In this work, we investigate the problem of UDA from a synthetic computer-generated domain to a…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Stephan Brehm , Sebastian Scherer , Rainer Lienhart

Time series encountered in practice are rarely stationary. When the data distribution changes, a forecasting model trained on past observations can lose accuracy. We study a small-footprint test-time adaptation (TTA) framework for causal…

Statistical Finance · Quantitative Finance 2026-02-03 Yurui Wu , Qingying Deng , Wonou Chung , Mairui Li

Test-time adaptation (TTA) aims to boost the generalization capability of a trained model by conducting self-/unsupervised learning during the testing phase. While most existing TTA methods for video primarily utilize visual supervisory…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Runhao Zeng , Qi Deng , Ronghao Zhang , Shuaicheng Niu , Jian Chen , Xiping Hu , Victor C. M. Leung

Vision-Language Models (VLMs) such as CLIP enable strong zero-shot recognition but suffer substantial degradation under distribution shifts. Test-Time Adaptation (TTA) aims to improve robustness using only unlabeled test samples, yet most…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Sanggeon Yun , Ryozo Masukawa , SungHeon Jeong , Wenjun Huang , Hanning Chen , Mohsen Imani

The practical utility of Speech Emotion Recognition (SER) systems is undermined by their fragility to domain shifts, such as speaker variability, the distinction between acted and naturalistic emotions, and cross-corpus variations. While…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-26 Jiaheng Dong , Hong Jia , Ting Dang

Visual-language models (VLMs) like CLIP exhibit strong generalization but struggle with distribution shifts at test time. Existing training-free test-time adaptation (TTA) methods operate strictly within CLIP's original feature space,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Jizhou Han , Chenhao Ding , SongLin Dong , Yuhang He , Xinyuan Gao , Yihong Gong

Crop mapping based on satellite images time-series (SITS) holds substantial economic value in agricultural production settings, in which parcel segmentation is an essential step. Existing approaches have achieved notable advancements in…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Juyuan Kang , Hao Zhu , Yan Zhu , Wei Zhang , Jianing Chen , Tianxiang Xiao , Yike Ma , Hao Jiang , Feng Dai

Learning in non-stationary environments is one of the biggest challenges in machine learning. Non-stationarity can be caused by either task drift, i.e., the drift in the conditional distribution of labels given the input data, or the domain…

Machine Learning · Computer Science 2020-03-16 Qicheng Lao , Xiang Jiang , Mohammad Havaei , Yoshua Bengio

Continual Test-Time Adaptation (CTTA) seeks to update a pretrained model during deployment using only the incoming, unlabeled data stream. Although prior approaches such as Tent, EATA etc. provide meaningful improvements under short…

Machine Learning · Computer Science 2026-05-26 Himanshu Mishra

Prior to deployment, an object detector is trained on a dataset compiled from a previous data collection campaign. However, the environment in which the object detector is deployed will invariably evolve, particularly in outdoor settings…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Anh-Dzung Doan , Bach Long Nguyen , Terry Lim , Madhuka Jayawardhana , Surabhi Gupta , Christophe Guettier , Ian Reid , Markus Wagner , Tat-Jun Chin

In recent years, deep learning-based methods have shown promising results in computer vision area. However, a common deep learning model requires a large amount of labeled data, which is labor-intensive to collect and label. What's more,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Shuhao Qiu , Chuang Zhu , Wenli Zhou

Recent semantic segmentation models perform well under standard weather conditions and sufficient illumination but struggle with adverse weather conditions and nighttime. Collecting and annotating training data under these conditions is…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Abdulrahman Kerim , Felipe Chamone , Washington Ramos , Leandro Soriano Marcolino , Erickson R. Nascimento , Richard Jiang

Domain adaptation (DA) is transfer learning which aims to learn an effective predictor on target data from source data despite data distribution mismatch between source and target. We present in this paper a novel unsupervised DA method for…

Computer Vision and Pattern Recognition · Computer Science 2018-02-23 Lingkun Luo , Liming Chen , Ying lu , Shiqiang Hu

Deep learning models perform poorly when domain shifts exist between training and test data. Test-time adaptation (TTA) is a paradigm to mitigate this issue by adapting pre-trained models using only unlabeled test samples. However, existing…

Machine Learning · Computer Science 2025-05-27 Taeckyung Lee , Sorn Chottananurak , Junsu Kim , Jinwoo Shin , Taesik Gong , Sung-Ju Lee

Recently, test-time adaptation has attracted wide interest in the context of vision-language models for image classification. However, to the best of our knowledge, the problem is completely overlooked in dense prediction tasks such as…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Mehrdad Noori , David Osowiechi , Gustavo Adolfo Vargas Hakim , Ali Bahri , Moslem Yazdanpanah , Sahar Dastani , Farzad Beizaee , Ismail Ben Ayed , Christian Desrosiers

Semantic segmentation is an important sub-task for many applications, but pixel-level ground truth labeling is costly and there is a tendency to overfit the training data, limiting generalization. Unsupervised domain adaptation can…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Yue Wang , Yuke Li , James H. Elder , Runmin Wu , Huchuan Lu

Robust facial expression recognition in unconstrained, "in-the-wild" environments remains challenging due to significant domain shifts between training and testing distributions. Test-time adaptation (TTA) offers a promising solution by…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Mohammadmahdi Honarmand , Onur Cezmi Mutlu , Parnian Azizian , Saimourya Surabhi , Dennis P. Wall

Vision-language object detectors (VLODs) such as YOLO-World and Grounding DINO exhibit strong zero-shot generalization, but their performance degrades under distribution shift. Test-time adaptation (TTA) offers a practical way to adapt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Atif Belal , Heitor R. Medeiros , Marco Pedersoli , Eric Granger

Video editing is a critical component of content creation that transforms raw footage into coherent works aligned with specific visual and narrative objectives. Existing approaches face two major challenges: temporal inconsistencies due to…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Jianhui Wang , Yinda Chen , Yangfan He , Xinyuan Song , Yi Xin , Dapeng Zhang , Zhongwei Wan , Bin Li , Rongchao Zhang

Deep perception models have to reliably cope with an open-world setting of domain shifts induced by different geographic regions, sensor properties, mounting positions, and several other reasons. Since covering all domains with annotated…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Awet Haileslassie Gebrehiwot , David Hurych , Karel Zimmermann , Patrick Pérez , Tomáš Svoboda