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Test-Time Adaptation (TTA) enables pre-trained models to adjust to distribution shift by learning from unlabeled test-time streams. However, existing methods typically treat these streams as independent samples, overlooking the supervisory…

Machine Learning · Computer Science 2026-01-30 Young Kyung Kim , Oded Schlesinger , Qiangqiang Wu , J. Matías Di Martino , Guillermo Sapiro

Hyperspectral image (HSI) classification models are highly sensitive to distribution shifts caused by real-world degradations such as noise, blur, compression, and atmospheric effects. To address this challenge, we propose HyperTTA…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Xia Yue , Anfeng Liu , Ning Chen , Chenjia Huang , Hui Liu , Zhou Huang , Leyuan Fang

Test-time adaptation (TTA) is an effective approach to mitigate performance degradation of trained models when encountering input distribution shifts at test time. However, existing TTA methods often suffer significant performance drops…

Machine Learning · Computer Science 2025-02-06 Minguk Jang , Hye Won Chung

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

Deep learning-based medical image segmentation models often face performance degradation when deployed across various medical centers, largely due to the discrepancies in data distribution. Test Time Adaptation (TTA) methods, which adapt…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Shishuai Hu , Zehui Liao , Zeyou Liu , Yong Xia

This paper investigates test-time adaptation (TTA) for regression, where a regression model pre-trained in a source domain is adapted to an unknown target distribution with unlabeled target data. Although regression is one of the…

Machine Learning · Computer Science 2025-01-24 Kazuki Adachi , Shin'ya Yamaguchi , Atsutoshi Kumagai , Tomoki Hamagami

Test-time adaptation (TTA) enables a pre-trained model to adapt online to an unlabeled test stream under distribution shift. While most TTA research focuses on the adaptation objective, practical streams also depend critically on the memory…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Shyma Alhuwaider , Yasmeen Alsaedy , Merey Ramazanova , Silvio Giancola , Bernard Ghanem

Test-time adaptation (TTA) methods, which generally rely on the model's predictions (e.g., entropy minimization) to adapt the source pretrained model to the unlabeled target domain, suffer from noisy signals originating from 1) incorrect or…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Jungsoo Lee , Debasmit Das , Jaegul Choo , Sungha Choi

Test-time adaptation (TTA) has emerged as a promising solution to tackle the continual domain shift in machine learning by allowing model parameters to change at test time, via self-supervised learning on unlabeled testing data. At the same…

Machine Learning · Computer Science 2024-12-03 Trung-Hieu Hoang , Duc Minh Vo , Minh N. Do

Data augmentation is known to contribute significantly to the robustness of machine learning models. In most instances, data augmentation is utilized during the training phase. Test-Time Augmentation (TTA) is a technique that instead…

Machine Learning · Statistics 2024-09-20 Masanari Kimura , Howard Bondell

Test-time adaption (TTA) has witnessed important progress in recent years, the prevailing methods typically first encode the image and the text and design strategies to model the association between them. Meanwhile, the image encoder is…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Yaxiong Wang , Zhenqiang Zhang , Lechao Cheng , Zhun Zhong , Dan Guo , Meng Wang

Given a model trained on source data, Test-Time Adaptation (TTA) enables adaptation and inference in test data streams with domain shifts from the source. Current methods predominantly optimize the model for each incoming test data batch…

Machine Learning · Computer Science 2024-07-18 Ziqiang Wang , Zhixiang Chi , Yanan Wu , Li Gu , Zhi Liu , Konstantinos Plataniotis , Yang Wang

Test-time augmentation (TTA) has become a promising approach for mitigating data sparsity in sequential recommendation by improving inference accuracy without requiring costly model retraining. However, existing TTA methods typically rely…

Information Retrieval · Computer Science 2026-04-20 Xibo Li , Liang Zhang

Adaptation of pretrained vision-language models such as CLIP to various downstream tasks have raised great interest in recent researches. Previous works have proposed a variety of test-time adaptation (TTA) methods to achieve strong…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Taolin Zhang , Jinpeng Wang , Hang Guo , Tao Dai , Bin Chen , Shu-Tao Xia

Training state-of-the-art vision models has become prohibitively expensive for researchers and practitioners. For the sake of accessibility and resource reuse, it is important to focus on adapting these models to a variety of downstream…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Malik Boudiaf , Romain Mueller , Ismail Ben Ayed , Luca Bertinetto

In this study, we introduce an intelligent Test Time Augmentation (TTA) algorithm designed to enhance the robustness and accuracy of image classification models against viewpoint variations. Unlike traditional TTA methods that…

Image and Video Processing · Electrical Eng. & Systems 2024-06-14 Efe Ozturk , Mohit Prabhushankar , Ghassan AlRegib

Data attribution methods, which quantify the influence of individual training data points on a machine learning model, have gained increasing popularity in data-centric applications in modern AI. Despite a recent surge of new methods…

Machine Learning · Computer Science 2025-10-24 Weiyi Wang , Junwei Deng , Yuzheng Hu , Shiyuan Zhang , Xirui Jiang , Runting Zhang , Han Zhao , Jiaqi W. Ma

Hyperparameter optimization (HPO) is generally treated as a bi-level optimization problem that involves fitting a (probabilistic) surrogate model to a set of observed hyperparameter responses, e.g. validation loss, and consequently…

Machine Learning · Computer Science 2021-10-18 Hadi S. Jomaa , Jonas Falkner , Lars Schmidt-Thieme

Test-time adaptation (TTA) aims to adapt a pre-trained model to the target domain in a batch-by-batch manner during inference. While label distributions often exhibit imbalances in real-world scenarios, most previous TTA approaches…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Sunghyun Park , Seunghan Yang , Jaegul Choo , Sungrack Yun

Test-time adaptation (TTA) refers to adapting a classifier for the test data when the probability distribution of the test data slightly differs from that of the training data of the model. To the best of our knowledge, most of the existing…

Machine Learning · Computer Science 2026-01-19 Sravan Danda , Aditya Challa , Shlok Mehendale , Snehanshu Saha