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Large-scale image-text contrastive pre-training models, such as CLIP, have been demonstrated to effectively learn high-quality multimodal representations. However, there is limited research on learning video-text representations for general…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Xingjian He , Sihan Chen , Fan Ma , Zhicheng Huang , Xiaojie Jin , Zikang Liu , Dongmei Fu , Yi Yang , Jing Liu , Jiashi Feng

Flow-based vision-language-action (VLA) models excel in embodied control but suffer from intractable likelihoods during multi-step sampling, hindering online reinforcement learning. We propose \textbf{\textit{$\boldsymbol{\pi}$-StepNFT}}…

Robotics · Computer Science 2026-03-10 Siting Wang , Xiaofeng Wang , Zheng Zhu , Minnan Pei , Xinyu Cui , Cheng Deng , Jian Zhao , Guan Huang , Haifeng Zhang , Jun Wang

Recent vision-language models (VLMs) such as CLIP, OpenCLIP, EVA02-CLIP and SigLIP achieve strong zero-shot performance, but it is unclear how reliably they respond to controlled linguistic perturbations. We introduce Language-Guided…

Computer Vision and Pattern Recognition · Computer Science 2026-02-19 Jae Joong Lee

Medical visual question answering (VQA) is a challenging multimodal task, where Vision-Language Pre-training (VLP) models can effectively improve the generalization performance. However, most methods in the medical field treat VQA as an…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Jiawei Chen , Dingkang Yang , Yue Jiang , Yuxuan Lei , Lihua Zhang

We introduce MAFALDA, a benchmark for fallacy classification that merges and unites previous fallacy datasets. It comes with a taxonomy that aligns, refines, and unifies existing classifications of fallacies. We further provide a manual…

Computation and Language · Computer Science 2024-04-11 Chadi Helwe , Tom Calamai , Pierre-Henri Paris , Chloé Clavel , Fabian Suchanek

Large vision-language models (LVLMs) have achieved impressive results in various vision-language tasks. However, despite showing promising performance, LVLMs suffer from hallucinations caused by language bias, leading to diminished focus on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Haozhe Zhao , Shuzheng Si , Liang Chen , Yichi Zhang , Maosong Sun , Mingjia Zhang , Baobao Chang

Existing contrastive language-image pre-training aims to learn a joint representation by matching abundant image-text pairs. However, the number of image-text pairs in medical datasets is usually orders of magnitude smaller than that in…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Jiarun Liu , Hong-Yu Zhou , Cheng Li , Weijian Huang , Hao Yang , Yong Liang , Shanshan Wang

Aligning features from different modalities, is one of the most fundamental challenges for cross-modal tasks. Although pre-trained vision-language models can achieve a general alignment between image and text, they often require…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Ziqi Jiang , Yanghao Wang , Long Chen

It is well-known that GANs are difficult to train, and several different techniques have been proposed in order to stabilize their training. In this paper, we propose a novel training method called manifold-matching, and a new GAN model…

Vision-Language Models (VLMs) leverage aligned visual encoders to transform images into visual tokens, allowing them to be processed similarly to text by the backbone large language model (LLM). This unified input paradigm enables VLMs to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Bangzheng Li , Fei Wang , Wenxuan Zhou , Nan Xu , Ben Zhou , Sheng Zhang , Hoifung Poon , Muhao Chen

With the rapid development of generative models, detecting generated fake images to prevent their malicious use has become a critical issue recently. Existing methods frame this challenge as a naive binary image classification task.…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Daichi Zhang , Tong Zhang , Jianmin Bao , Shiming Ge , Sabine Süsstrunk

Harmful fine-tuning (HFT), performed directly on open-source LLMs or through Fine-tuning-as-a-Service, breaks safety alignment and poses significant threats. Existing methods aim to mitigate HFT risks by learning robust representation on…

Machine Learning · Computer Science 2025-08-13 Liang Chen , Xueting Han , Li Shen , Jing Bai , Kam-Fai Wong

There currently exist two main approaches to reproducing visual appearance using Machine Learning (ML): The first is training models that generalize over different instances of a problem, e.g., different images of a dataset. As one-shot…

Graphics · Computer Science 2022-09-29 Michael Fischer , Tobias Ritschel

False positives (FPs) have been an issue of extreme importance for anti-virus (AV) systems for decades. As more security vendors turn to machine learning, alert deluge has hit critical mass with over 20% of all alerts resulting in FPs and,…

Machine Learning · Computer Science 2020-10-26 Edward Raff , Bobby Filar , James Holt

Vision language models (VLMs) like CLIP show stellar zero-shot capability on classification benchmarks. However, selecting the VLM with the highest performance on the unlabeled downstream task is non-trivial. Existing VLM selection methods…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Yuhe Ding , Bo Jiang , Aihua Zheng , Qin Xu , Jian Liang

In the field of image clustering, the widely used contrastive learning networks improve clustering performance by maximizing the similarity between positive pairs and the dissimilarity of negative pairs of the inputs. Extant contrastive…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Cheng Wang , Shuisheng Zhou , Fengjiao Peng , Jin Sheng , Feng Ye , Yinli Dong

Existing image-text matching approaches typically leverage triplet loss with online hard negatives to train the model. For each image or text anchor in a training mini-batch, the model is trained to distinguish between a positive and the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Tianlang Chen , Jiajun Deng , Jiebo Luo

The application of Contrastive Language-Image Pre-training (CLIP) in Weakly Supervised Semantic Segmentation (WSSS) research powerful cross-modal semantic understanding capabilities. Existing methods attempt to optimize input text prompts…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Zhongxing Xu , Feilong Tang , Zhe Chen , Yingxue Su , Zhiyi Zhao , Ge Zhang , Jionglong Su , Zongyuan Ge

Gender bias in vision-language models (VLMs) can reinforce harmful stereotypes and discrimination. In this paper, we focus on mitigating gender bias towards vision-language tasks. We identify object hallucination as the essence of gender…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yunqi Zhang , Songda Li , Chunyuan Deng , Luyi Wang , Hui Zhao

A visual-language model (VLM) pre-trained on natural images and text pairs poses a significant barrier when applied to medical contexts due to domain shift. Yet, adapting or fine-tuning these VLMs for medical use presents considerable…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Aisha Urooj Khan , John Garrett , Tyler Bradshaw , Lonie Salkowski , Jiwoong Jason Jeong , Amara Tariq , Imon Banerjee