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Continual Test-Time Adaptation (CTTA) is an emerging and challenging task where a model trained in a source domain must adapt to continuously changing conditions during testing, without access to the original source data. CTTA is prone to…

机器学习 · 计算机科学 2024-05-29 Ziqi Shi , Fan Lyu , Ye Liu , Fanhua Shang , Fuyuan Hu , Wei Feng , Zhang Zhang , Liang Wang

Recently, test-time adaptation (TTA) has been proposed as a promising solution for addressing distribution shifts. It allows a base model to adapt to an unforeseen distribution during inference by leveraging the information from the batch…

机器学习 · 计算机科学 2023-02-07 Tong Wu , Feiran Jia , Xiangyu Qi , Jiachen T. Wang , Vikash Sehwag , Saeed Mahloujifar , Prateek Mittal

Experiencing domain shifts during test-time is nearly inevitable in practice and likely results in a severe performance degradation. To overcome this issue, test-time adaptation continues to update the initial source model during…

计算机视觉与模式识别 · 计算机科学 2022-11-10 Robert A. Marsden , Mario Döbler , Bin Yang

Test-Time Adaptation (TTA) has emerged as a promising paradigm for enhancing the generalizability of models. However, existing mainstream TTA methods, predominantly operating at batch level, often exhibit suboptimal performance in complex…

机器学习 · 计算机科学 2024-10-15 Yige Yuan , Bingbing Xu , Teng Xiao , Liang Hou , Fei Sun , Huawei Shen , Xueqi Cheng

Test-time adaptation (TTA) aims to mitigate performance degradation under distribution shifts by updating model parameters during inference. Existing approaches have primarily framed adaptation around affine modulation, focusing on…

机器学习 · 计算机科学 2026-03-30 Hyeongyu Kim , Geonhui Han , Dosik Hwang

Test-Time Adaptation (TTA) has recently emerged as a promising strategy for tackling the problem of machine learning model robustness under distribution shifts by adapting the model during inference without access to any labels. Because of…

机器学习 · 计算机科学 2024-07-22 Sebastian Cygert , Damian Sójka , Tomasz Trzciński , Bartłomiej Twardowski

Test-time adaptation (TTA) has emerged as a promising solution to address performance decay due to unforeseen distribution shifts between training and test data. While recent TTA methods excel in adapting to test data variations, such…

机器学习 · 计算机科学 2024-03-29 Hyejin Park , Jeongyeon Hwang , Sunung Mun , Sangdon Park , Jungseul Ok

In Test-time Adaptation (TTA), given a source model, the goal is to adapt it to make better predictions for test instances from a different distribution than the source. Crucially, TTA assumes no access to the source data or even any…

计算机视觉与模式识别 · 计算机科学 2022-09-08 Ansh Khurana , Sujoy Paul , Piyush Rai , Soma Biswas , Gaurav Aggarwal

Models should be able to adapt to unseen data during test-time to avoid performance drops caused by inevitable distribution shifts in real-world deployment scenarios. In this work, we tackle the practical yet challenging test-time…

计算机视觉与模式识别 · 计算机科学 2022-12-02 Yunhe Gao , Xingjian Shi , Yi Zhu , Hao Wang , Zhiqiang Tang , Xiong Zhou , Mu Li , Dimitris N. Metaxas

Deep learning models deployed in real-world applications (e.g., medicine) face challenges because source models do not generalize well to domain-shifted target data. Many successful domain adaptation (DA) approaches require full access to…

计算机视觉与模式识别 · 计算机科学 2025-09-08 Mainak Biswas , Ambedkar Dukkipati , Devarajan Sridharan

Test-Time Adaptation aims to adapt source domain model to testing data at inference stage with success demonstrated in adapting to unseen corruptions. However, these attempts may fail under more challenging real-world scenarios. Existing…

机器学习 · 计算机科学 2025-03-27 Yongyi Su , Xun Xu , Kui Jia

Test-time adaptation (TTA) of 3D point clouds is crucial for mitigating discrepancies between training and testing samples in real-world scenarios, particularly when handling corrupted point clouds. LiDAR data, for instance, can be affected…

计算机视觉与模式识别 · 计算机科学 2024-11-25 Hamidreza Dastmalchi , Aijun An , Ali Cheraghian , Shafin Rahman , Sameera Ramasinghe

Graph Neural Networks frequently exhibit significant performance degradation in the out-of-distribution test scenario. While test-time training (TTT) offers a promising solution, existing Parameter Finetuning (PaFT) paradigm suffer from…

机器学习 · 计算机科学 2026-01-30 Jiaxin Zhang , Yiqi Wang , Siwei Wang , Xihong Yang , Yu Shi , Xinwang Liu , En Zhu

Deep neural networks often exhibit poor performance on data that is unlikely under the train-time data distribution, for instance data affected by corruptions. Previous works demonstrate that test-time adaptation to data shift, for instance…

Continual test-time adaptation aims to continuously adapt a pre-trained model to a stream of target domain data without accessing source data. Without access to source domain data, the model focuses solely on the feature characteristics of…

计算机视觉与模式识别 · 计算机科学 2025-08-29 Wenting Yin , Han Sun , Xinru Meng , Ningzhong Liu , Huiyu Zhou

Text understanding often suffers from domain shifts. To handle testing domains, domain adaptation (DA) is trained to adapt to a fixed and observed testing domain; a more challenging paradigm, test-time adaptation (TTA), cannot access the…

计算与语言 · 计算机科学 2026-01-05 Tianlun Liu , Zhiliang Tian , Zhen Huang , Xingzhi Zhou , Wanlong Yu , Tianle Liu , Feng Liu , Dongsheng Li

Unsupervised domain adaptation (UDA) aims to leverage the knowledge learned from labeled source domains to improve performance on the unlabeled target domains. While Convolutional Neural Networks (CNNs) have been dominant in previous UDA…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Xiaowei Yu , Zhe Huang , Zao Zhang

Test-Time Adaptation (TTA) addresses domain shifts between training and testing. However, existing methods assume a homogeneous target domain (e.g., single domain) at any given time. They fail to handle the dynamic nature of real-world…

机器学习 · 计算机科学 2025-12-25 Chuyang Ye , Dongyan Wei , Zhendong Liu , Yuanyi Pang , Yixi Lin , Qinting Jiang , Jingyan Jiang , Dongbiao He

Test-time adaptation (TTA) aims to adapt models to maintain reliable performance on non-stationary test streams without requiring labeled data. Despite its empirical success, the learnability of TTA under non-stationary streams remains…

机器学习 · 计算机科学 2026-05-28 Zhi Zhou , Ming Yang , Shi-Yu Tian , Kun-Yang Yu , Lan-Zhe Guo , Yu-Feng Li

Test-time adaptation (TTA) has increasingly been an important topic to efficiently tackle the cross-domain distribution shift at test time for medical images from different institutions. Previous TTA methods have a common limitation of…

计算机视觉与模式识别 · 计算机科学 2022-05-30 Hongzheng Yang , Cheng Chen , Meirui Jiang , Quande Liu , Jianfeng Cao , Pheng Ann Heng , Qi Dou