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Medical vision-language models (VLMs) achieve strong performance in diagnostic reporting and image-text alignment, yet their underlying reasoning mechanisms remain fundamentally correlational, exhibiting reliance on superficial statistical…

Machine Learning · Computer Science 2026-01-27 Weiqin Yang , Haowen Xue , Qingyi Peng , Hexuan Hu , Qian Huang , Tingbo Zhang

Vision-language retrieval-augmented generation (RAG) has become an effective approach for tackling Knowledge-Based Visual Question Answering (KB-VQA), which requires external knowledge beyond the visual content presented in images. The…

Information Retrieval · Computer Science 2025-09-15 Wei Yang , Jingjing Fu , Rui Wang , Jinyu Wang , Lei Song , Jiang Bian

Retrieval-augmented generation (RAG) with large language models (LLMs) plays a crucial role in question answering, as LLMs possess limited knowledge and are not updated with continuously growing information. Most recent work on RAG has…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Shichao Kan , Yuhai Deng , Jiale Fu , Lihui Cen , Zhe Qu , Linna Zhang , Yixiong Liang , Yigang Cen

Recently, large language models (LLMs) have demonstrated impressive capabilities in dealing with new tasks with the help of in-context learning (ICL). In the study of Large Vision-Language Models (LVLMs), when implementing ICL, researchers…

Computation and Language · Computer Science 2024-12-11 Ellen Yi-Ge , Jiechao Gao , Wei Han , Wei Zhu

Visual retrieval-augmented generation (VRAG) augments vision-language models (VLMs) with external visual knowledge to ground reasoning and reduce hallucinations. Yet current VRAG systems often fail to reliably perceive and integrate…

Computation and Language · Computer Science 2025-10-14 Yubo Sun , Chunyi Peng , Yukun Yan , Shi Yu , Zhenghao Liu , Chi Chen , Zhiyuan Liu , Maosong Sun

Vision Language Models (VLMs) are designed to extend Large Language Models (LLMs) with visual capabilities, yet in this work we observe a surprising phenomenon: VLMs can outperform their underlying LLMs on purely text-only tasks,…

Machine Learning · Computer Science 2026-02-18 Nicolas Buzeta , Felipe del Rio , Cristian Hinostroza , Denis Parra , Hans Lobel , Rodrigo Toro Icarte

Vision-language-action (VLA) models finetuned from vision-language models (VLMs) hold the promise of leveraging rich pretrained representations to build generalist robots across diverse tasks and environments. However, direct fine-tuning on…

Robotics · Computer Science 2025-09-18 Shresth Grover , Akshay Gopalkrishnan , Bo Ai , Henrik I. Christensen , Hao Su , Xuanlin Li

Large Vision Language Models (LVLMs) have achieved remarkable progress, yet they often suffer from language bias, producing answers without relying on visual evidence. While prior work attempts to mitigate this issue through decoding…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Seulbi Lee , Sangheum Hwang

Data-driven approaches struggle with precise manipulation; imitation learning requires many hard-to-obtain demonstrations, while reinforcement learning yields brittle, non-generalizable policies. We introduce VisuoTactile Local (ViTaL)…

Robotics · Computer Science 2025-06-17 Zifan Zhao , Siddhant Haldar , Jinda Cui , Lerrel Pinto , Raunaq Bhirangi

Autoregressive vision-language models (VLMs) can handle many tasks within a single model, yet the representations that enable this capability remain opaque. We find that VLMs align conceptually equivalent inputs into a shared task vector,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Grace Luo , Trevor Darrell , Amir Bar

Video understanding is inherently intention-driven-humans naturally focus on relevant frames based on their goals. Recent advancements in multimodal large language models (MLLMs) have enabled flexible query-driven reasoning; however,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Ziqiang Xu , Qi Dai , Tian Xie , Yifan Yang , Kai Qiu , DongDong Chen , Zuxuan Wu , Chong Luo

We propose an approach to referring expression generation (REG) in visually grounded dialogue that is meant to produce referring expressions (REs) that are both discriminative and discourse-appropriate. Our method constitutes a two-stage…

Computation and Language · Computer Science 2024-09-10 Bram Willemsen , Gabriel Skantze

Multi-modal Retrieval-Augmented Generation (RAG) has emerged as a highly effective paradigm for Knowledge-Based Visual Question Answering (KB-VQA). Despite recent advancements, prevailing methods still primarily depend on images as the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Yingjian Zhu , Xinming Wang , Kun Ding , Ying Wang , Bin Fan , Shiming Xiang

Reinforcement learning (RL) has recently shown strong potential in improving the reasoning capabilities of large language models and is now being actively extended to vision-language models (VLMs). However, existing RL applications in VLMs…

Machine Learning · Computer Science 2025-04-07 Yan Ma , Steffi Chern , Xuyang Shen , Yiran Zhong , Pengfei Liu

Referring Expression Comprehension (REC) is a foundational cross-modal task that evaluates the interplay of language understanding, image comprehension, and language-to-image grounding. It serves as an essential testing ground for…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Xuzheng Yang , Junzhuo Liu , Peng Wang , Guoqing Wang , Yang Yang , Heng Tao Shen

Vision-language models (VLMs) have shown powerful capabilities in visual question answering and reasoning tasks by combining visual representations with the abstract skill set large language models (LLMs) learn during pretraining. Vision,…

Artificial Intelligence · Computer Science 2023-09-01 Riley Tavassoli , Mani Amani , Reza Akhavian

Remote sensing (RS) large vision-language models (LVLMs) have shown strong promise across visual grounding (VG) tasks. However, existing RS VG datasets predominantly rely on explicit referring expressions-such as relative position, relative…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Yue Zhou , Jue Chen , Zilun Zhang , Penghui Huang , Ran Ding , Zhentao Zou , PengFei Gao , Yuchen Wei , Ke Li , Xue Yang , Xue Jiang , Hongxin Yang , Jonathan Li

Medical vision-language models (VLMs) excel at image-text understanding but typically rely on a single-pass reasoning that neglects localized visual cues. In clinical practice, however, human experts iteratively scan, focus, and refine the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Kaitao Chen , Shaohao Rui , Yankai Jiang , Jiamin Wu , Qihao Zheng , Chunfeng Song , Xiaosong Wang , Mu Zhou , Mianxin Liu

Perception is a fundamental task in the field of computer vision, encompassing a diverse set of subtasks that can be systematically categorized into four distinct groups based on two dimensions: prediction type and instruction type.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Wentao Xiang , Haoxian Tan , Cong Wei , Yujie Zhong , Dengjie Li , Yujiu Yang

Visual grounding is a common vision task that involves grounding descriptive sentences to the corresponding regions of an image. Most existing methods use independent image-text encoding and apply complex hand-crafted modules or…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Ming Dai , Lingfeng Yang , Yihao Xu , Zhenhua Feng , Wankou Yang