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Vision-language models (VLMs) exhibit remarkable zero-shot capabilities but struggle with distribution shifts in downstream tasks when labeled data is unavailable, which has motivated the development of Test-Time Adaptation (TTA) to improve…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Yiwen Liang , Hui Chen , Yizhe Xiong , Zihan Zhou , Mengyao Lyu , Zijia Lin , Shuaicheng Niu , Sicheng Zhao , Jungong Han , Guiguang Ding

Test-time adaptation (TTA) of Vision-Language Models (VLMs) has emerged as a technique for tackling distribution shifts during the test time. Recent research indicates that the test-time adaptation is intrinsically linked to the model's…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Aodi Li , Liansheng Zhuang , Xiao Long , Houqiang Li , Shafei Wang

Vision-Language Models (VLMs) show promise as zero-shot goal-conditioned value functions, but their frozen pre-trained representations limit generalization and temporal reasoning. We introduce VITA, a zero-shot value function learning…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Christos Ziakas , Alessandra Russo

Spoken Language Models (SLMs) are increasingly central to modern speech-driven applications, but performance degrades under acoustic shift - real-world noise, reverberation, and microphone variation. Prior solutions rely on offline domain…

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

One fascinating aspect of pre-trained Audio-Language Models (ALMs) learning is their impressive zero-shot generalization capability and test-time adaptation (TTA) methods aiming to improve domain performance without annotations. However,…

Sound · Computer Science 2024-12-24 Gongyu Chen , Haomin Zhang , Chaofan Ding , Zihao Chen , Xinhan Di

One fascinating aspect of pre-trained vision-language models~(VLMs) learning under language supervision is their impressive zero-shot generalization capability. However, this ability is hindered by distribution shifts between the training…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Shuai Zhao , Xiaohan Wang , Linchao Zhu , Yi Yang

Machine learning methods strive to acquire a robust model during the training process that can effectively generalize to test samples, even in the presence of distribution shifts. However, these methods often suffer from performance…

Machine Learning · Computer Science 2024-12-13 Jian Liang , Ran He , Tieniu Tan

Test-time adaptation (TTA) enhances the zero-shot robustness under distribution shifts by leveraging unlabeled test data during inference. Despite notable advances, several challenges still limit its broader applicability. First, most…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Youjia Zhang , Youngeun Kim , Young-Geun Choi , Hongyeob Kim , Huiling Liu , Sungeun Hong

Vision-language models (VLMs) struggle in open-world applications, where out-of-distribution (OOD) concepts often trigger cross-modal alignment collapse and severely degrade zero-shot performance. We identify the root cause as modal…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Jensen Zhang , Ningyuan Liu , Keze Wang

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

Test-time adaptation (TTA) aims to adapt a model, initially trained on training data, to test data with potential distribution shifts. Most existing TTA methods focus on classification problems. The pronounced success of classification…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Chang'an Yi , Haotian Chen , Yifan Zhang , Yonghui Xu , Yan Zhou , Lizhen Cui

Vision-Language Models (VLMs) such as CLIP have yielded unprecedented performance for zero-shot image classification, yet their generalization capability may still be seriously challenged when confronted to domain shifts. In response, we…

Pre-trained vision-language models such as contrastive language-image pre-training (CLIP) have demonstrated a remarkable generalizability, which has enabled a wide range of applications represented by zero-shot classification. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Kazuki Adachi , Shin'ya Yamaguchi , Tomoki Hamagami

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

Tactile-vision-language (TVL) models are increasingly deployed in real-world robotic and multimodal perception tasks, where test-time distribution shifts are unavoidable. Existing test-time adaptation (TTA) methods provide filtering in…

Robotics · Computer Science 2026-02-19 Chuyang Ye , Haoxian Jing , Qinting Jiang , Yixi Lin , Qiang Li , Xing Tang , Jingyan Jiang

To perform outdoor visual navigation and search, a robot may leverage satellite imagery to generate visual priors. This can help inform high-level search strategies, even when such images lack sufficient resolution for target recognition.…

The rapid advancements in vision-language models (VLMs), such as CLIP, have intensified the need to address distribution shifts between training and testing datasets. Although prior Test-Time Training (TTT) techniques for VLMs have…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Yuto Kojima , Jiarui Xu , Xueyan Zou , Xiaolong Wang

Medical vision-language models (VLMs) are strong zero-shot recognizers for medical imaging, but their reliability under domain shift hinges on calibrated uncertainty with guarantees. Split conformal prediction (SCP) offers finite-sample…

Computer Vision and Pattern Recognition · Computer Science 2026-02-20 Behzad Bozorgtabar , Dwarikanath Mahapatra , Sudipta Roy , Muzammal Naseer , Imran Razzak , Zongyuan Ge

For visual document understanding (VDU), self-supervised pretraining has been shown to successfully generate transferable representations, yet, effective adaptation of such representations to distribution shifts at test-time remains to be…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Sayna Ebrahimi , Sercan O. Arik , Tomas Pfister