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Electroencephalogram (EEG)-based brain-computer interfaces (BCIs) face significant deployment challenges due to inter-subject variability, signal non-stationarity, and computational constraints. While test-time adaptation (TTA) mitigates…

Human-Computer Interaction · Computer Science 2026-01-13 Siyang Li , Jiayi Ouyang , Zhenyao Cui , Ziwei Wang , Tianwang Jia , Feng Wan , Dongrui Wu

This study investigates continual fine-tuning strategies for deep learning in online longitudinal electroencephalography (EEG) motor imagery (MI) decoding within a causal setting involving a large user group and multiple sessions per…

Machine Learning · Computer Science 2025-02-12 Martin Wimpff , Bruno Aristimunha , Sylvain Chevallier , Bin Yang

Online Test-Time Adaptation (OTTA) has emerged as an effective strategy to handle distributional shifts, allowing on-the-fly adaptation of pre-trained models to new target domains during inference, without the need for source data. We…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 WeiQin Chuah , Ruwan Tennakoon , Alireza Bab-Hadiashar

This article presents a comprehensive survey of online test-time adaptation (OTTA), focusing on effectively adapting machine learning models to distributionally different target data upon batch arrival. Despite the recent proliferation of…

Artificial Intelligence · Computer Science 2024-07-19 Zixin Wang , Yadan Luo , Liang Zheng , Zhuoxiao Chen , Sen Wang , Zi Huang

Electroencephalography (EEG) foundation models have shown strong potential for learning generalizable representations from large-scale neural data, yet their clinical deployment is hindered by distribution shifts across clinical settings,…

Machine Learning · Computer Science 2026-04-21 Gabriel Jason Lee , Jathurshan Pradeepkumar , Jimeng Sun

Drowsy driving is a growing cause of traffic accidents, prompting recent exploration of electroencephalography (EEG)-based drowsiness detection systems. However, the inherent variability of EEG signals due to psychological and physical…

Machine Learning · Computer Science 2025-12-01 Geun-Deok Jang , Dong-Kyun Han , Seo-Hyeon Park , Seong-Whan Lee

Online Test-Time Adaptation (OTTA) enhances model robustness by updating pre-trained models with unlabeled data during testing. In healthcare, OTTA is vital for real-time tasks like predicting blood pressure from biosignals, which demand…

Signal Processing · Electrical Eng. & Systems 2024-11-28 Yong-Yeon Jo , Byeong Tak Lee , Beom Joon Kim , Jeong-Ho Hong , Hak Seung Lee , Joon-myoung Kwon

Decoding speech from stereo-electroencephalography (sEEG) signals has emerged as a promising direction for brain-computer interfaces (BCIs). Its clinical applicability, however, is limited by the inherent non-stationarity of neural signals,…

Human-Computer Interaction · Computer Science 2025-09-30 Suli Wang , Yang-yang Li , Siqi Cai , Haizhou Li

Individual differences in brain activity hinder the online application of electroencephalogram (EEG)-based brain computer interface (BCI) systems. To overcome this limitation, this study proposes an online adaptation algorithm for unseen…

Signal Processing · Electrical Eng. & Systems 2025-09-25 Sheng-Bin Duan , Jian-Long Hao , Tian-Yu Xiang , Xiao-Hu Zhou , Mei-Jiang Gui , Xiao-Liang Xie , Shi-Qi Liu , Zeng-Guang Hou

With the growth of information on the Web, most users heavily rely on information access systems (e.g., search engines, recommender systems, etc.) in their daily lives. During this procedure, modeling users' satisfaction status plays an…

Human-Computer Interaction · Computer Science 2022-08-18 Ziyi Ye , Xiaohui Xie , Yiqun Liu , Zhihong Wang , Xuesong Chen , Min Zhang , Shaoping Ma

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

Continual Test-time adaptation (CTTA) continuously adapts the deployed model on every incoming batch of data. While achieving optimal accuracy, existing CTTA approaches present poor real-world applicability on resource-constrained edge…

Machine Learning · Computer Science 2026-04-21 Xiao Ma , Young D. Kwon , Dong Ma

Test-time adaptation (TTA) seeks to tackle potential distribution shifts between training and test data by adapting a given model w.r.t. any test sample. Although recent TTA has shown promising performance, we still face two key challenges:…

Machine Learning · Computer Science 2025-08-27 Mingkui Tan , Guohao Chen , Jiaxiang Wu , Yifan Zhang , Yaofo Chen , Peilin Zhao , Shuaicheng Niu

Brain-computer interfaces (BCIs) suffer from accuracy degradation as neural signals drift over time and vary across users, requiring frequent recalibration that limits practical deployment. We introduce EDAPT, a task- and model-agnostic…

Machine Learning · Computer Science 2025-08-15 Lisa Haxel , Jaivardhan Kapoor , Ulf Ziemann , Jakob H. Macke

Recently, spiking neural networks (SNNs), deployed on neuromorphic chips, provide highly efficient solutions on edge devices in different scenarios. However, their ability to adapt to distribution shifts after deployment has become a…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Kejie Zhao , Wenjia Hua , Aiersi Tuerhong , Luziwei Leng , Yuxin Ma , Qinghai Guo

In the context of Brain-Computer Interfaces, we propose an adaptive method that reaches offline performance level while being usable online without requiring supervision. Interestingly, our method does not require retraining the model, as…

Signal Processing · Electrical Eng. & Systems 2024-03-26 Yassine El Ouahidi , Giulia Lioi , Nicolas Farrugia , Bastien Pasdeloup , Vincent Gripon

Human Activity Recognition (HAR) models often suffer from performance degradation in real-world applications due to distribution shifts in activity patterns across individuals. Test-Time Adaptation (TTA) is an emerging learning paradigm…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Shuoyuan Wang , Jindong Wang , HuaJun Xi , Bob Zhang , Lei Zhang , Hongxin Wei

Online test-time adaptation (OTTA) of vision-language models (VLMs) has recently garnered increased attention to take advantage of data observed along a stream to improve future predictions. Unfortunately, existing methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Clément Fuchs , Maxime Zanella , Christophe De Vleeschouwer

Since distribution shifts are likely to occur during test-time and can drastically decrease the model's performance, online test-time adaptation (TTA) continues to update the model after deployment, leveraging the current test data.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Robert A. Marsden , Mario Döbler , Bin Yang

Objective: An electroencephalogram (EEG)-based brain-computer interface (BCI) enables direct communication between the human brain and a computer. Due to individual differences and non-stationarity of EEG signals, such BCIs usually require…

Human-Computer Interaction · Computer Science 2024-12-11 Siyang Li , Ziwei Wang , Hanbin Luo , Lieyun Ding , Dongrui Wu
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