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The zero-shot capabilities of Vision-Language Models (VLMs) have been widely leveraged to improve predictive performance. However, previous works on transductive or test-time adaptation (TTA) often make strong assumptions about the data…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Maxime Zanella , Clément Fuchs , Christophe De Vleeschouwer , Ismail Ben Ayed

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

Transformers (Vaswani et al., 2017) have brought a remarkable improvement in the performance of neural machine translation (NMT) systems but they could be surprisingly vulnerable to noise. In this work, we try to investigate how noise…

Computation and Language · Computer Science 2021-09-13 Peyman Passban , Puneeth S. M. Saladi , Qun Liu

Visual Place Recognition (VPR) has evolved from handcrafted descriptors to deep learning approaches, yet significant challenges remain. Current approaches, including Vision Foundation Models (VFMs) and Multimodal Large Language Models…

Machine Learning · Computer Science 2025-09-03 Jintao Cheng , Weibin Li , Jiehao Luo , Xiaoyu Tang , Zhijian He , Jin Wu , Yao Zou , Wei Zhang

Learning efficient and expressive visual representation has long been the pursuit of computer vision research. While Vision Transformers (ViTs) gradually replace traditional Convolutional Neural Networks (CNNs) as more scalable vision…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Quan Kong , Yanru Xiao , Yuhao Shen , Cong Wang

Vision-language models (VLM) have demonstrated impressive performance in image recognition by leveraging self-supervised training on large datasets. Their performance can be further improved by adapting to the test sample using test-time…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Ramya Hebbalaguppe , Tamoghno Kandar , Abhinav Nagpal , Chetan Arora

Prompt tuning (PT) has long been recognized as an effective and efficient paradigm for transferring large pre-trained vision-language models (VLMs) to downstream tasks by learning a tiny set of context vectors. Nevertheless, in this work,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Shihan Wu , Ji Zhang , Pengpeng Zeng , Lianli Gao , Jingkuan Song , Heng Tao Shen

Vision-language models (VLMs) such as CLIP demonstrate strong performance but struggle when adapted to downstream tasks. Prompt learning has emerged as an efficient and effective strategy to adapt VLMs while preserving their pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Xiwen Chen , Wenhui Zhu , Peijie Qiu , Hao Wang , Huayu Li , Haiyu Wu , Aristeidis Sotiras , Yalin Wang , Abolfazl Razi

Pre-trained vision-language models (VLMs) have shown impressive performance on various downstream tasks by utilizing knowledge learned from large data. In general, the performance of VLMs on target tasks can be further improved by prompt…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Eulrang Cho , Jooyeon Kim , Hyunwoo J. Kim

Vision-Language Models (VLMs), such as CLIP, have demonstrated remarkable zero-shot generalizability across diverse downstream tasks. However, recent studies have revealed that VLMs, including CLIP, are highly vulnerable to adversarial…

Cryptography and Security · Computer Science 2025-10-27 Jia Deng , Jin Li , Zhenhua Zhao , Shaowei Wang

We propose a novel regularizer for supervised learning called Conditioning on Noisy Targets (CNT). This approach consists in conditioning the model on a noisy version of the target(s) (e.g., actions in imitation learning or labels in…

Machine Learning · Computer Science 2022-10-28 Alexia Jolicoeur-Martineau , Alex Lamb , Vikas Verma , Aniket Didolkar

In this paper, we study a practical but less-touched problem in Vision-Language Models (VLMs), \ie, negation understanding. Specifically, many real-world applications require models to explicitly identify what is false or non-existent, \eg,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Haochen Han , Alex Jinpeng Wang , Fangming Liu , Jun Zhu

Test-time prompt tuning (TPT) has emerged as a promising technique for adapting large vision-language models (VLMs) to unseen tasks without relying on labeled data. However, the lack of dispersion between textual features can hurt…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Shihab Aaqil Ahamed , Udaya S. K. P. Miriya Thanthrige , Ranga Rodrigo , Muhammad Haris Khan

This paper presents contrastive-tuning, a simple method employing contrastive training to align image and text models while still taking advantage of their pre-training. In our empirical study we find that locked pre-trained image models…

Computer Vision and Pattern Recognition · Computer Science 2022-06-23 Xiaohua Zhai , Xiao Wang , Basil Mustafa , Andreas Steiner , Daniel Keysers , Alexander Kolesnikov , Lucas Beyer

While deep learning, including Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs), has significantly advanced classification performance, its typical reliance on extensive annotated datasets presents a major obstacle in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Matheus Vinícius Todescato , Joel Luís Carbonera

Test-time training (TTT) methods explicitly update the weights of a model to adapt to the specific test instance, and they have found success in a variety of settings, including most recently language modeling and reasoning. To demystify…

Machine Learning · Computer Science 2026-02-24 Halil Alperen Gozeten , M. Emrullah Ildiz , Xuechen Zhang , Mahdi Soltanolkotabi , Marco Mondelli , Samet Oymak

The success of Vision Language Models (VLMs) on various vision-language tasks heavily relies on pre-training with large scale web-crawled datasets. However, the noisy and incomplete nature of web data makes dataset scale crucial for…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Yiyi Tao , Zhuoyue Wang , Hang Zhang , Lun Wang

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

Large-scale vision-language (V-L) models have demonstrated remarkable generalization capabilities for downstream tasks through prompt tuning. However, the mechanisms behind the learned text representations are unknown, limiting further…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Didi Zhu , Zexi Li , Min Zhang , Junkun Yuan , Yunfeng Shao , Jiashuo Liu , Kun Kuang , Yinchuan Li , Chao Wu

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