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Recent multimodal large language models (MLLMs) still struggle with long document understanding due to two fundamental challenges: information interference from abundant irrelevant content, and the quadratic computational cost of…

Computation and Language · Computer Science 2025-11-14 Yongxin Shi , Jiapeng Wang , Zeyu Shan , Dezhi Peng , Zening Lin , Lianwen Jin

Most multimodal large language models (MLLMs) learn language-to-object grounding through causal language modeling where grounded objects are captured by bounding boxes as sequences of location tokens. This paradigm lacks pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Yichi Zhang , Ziqiao Ma , Xiaofeng Gao , Suhaila Shakiah , Qiaozi Gao , Joyce Chai

Comprehending long visual documents, where information is distributed across extensive pages of text and visual elements, is a critical but challenging task for modern Vision-Language Models (VLMs). Existing approaches falter on a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Dawei Zhu , Rui Meng , Jiefeng Chen , Sujian Li , Tomas Pfister , Jinsung Yoon

Document visual question answering (DocVQA) pipelines that answer questions from documents have broad applications. Existing methods focus on handling single-page documents with multi-modal language models (MLMs), or rely on text-based…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Jaemin Cho , Debanjan Mahata , Ozan Irsoy , Yujie He , Mohit Bansal

Visual grounding refers to the ability of a model to identify a region within some visual input that matches a textual description. Consequently, a model equipped with visual grounding capabilities can target a wide range of applications in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Georgios Pantazopoulos , Eda B. Özyiğit

Understanding multi-page documents poses a significant challenge for multimodal large language models (MLLMs), as it requires fine-grained visual comprehension and multi-hop reasoning across pages. While prior work has explored…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Junyu Xiong , Yonghui Wang , Weichao Zhao , Chenyu Liu , Bing Yin , Wengang Zhou , Houqiang Li

Large language models (LLMs) achieve optimal utility when their responses are grounded in external knowledge sources. However, real-world documents, such as annual reports, scientific papers, and clinical guidelines, frequently combine…

Information Retrieval · Computer Science 2025-12-17 Chi Zhang , Qiyang Chen , Mengqi Zhang

Document parsing (DP) transforms unstructured or semi-structured documents into structured, machine-readable representations, enabling downstream applications such as knowledge base construction and retrieval-augmented generation (RAG).…

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

Document-level Relation Extraction (DocRE), which aims to extract relations from a long context, is a critical challenge in achieving fine-grained structural comprehension and generating interpretable document representations. Inspired by…

Computation and Language · Computer Science 2023-11-14 Junpeng Li , Zixia Jia , Zilong Zheng

Grounding language in the physical world requires AI systems to interpret references that emerge dynamically during conversation. While current vision-language models (VLMs) excel at static image tasks, they struggle to resolve ambiguous…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Anna Deichler , Jim O'Regan , Fethiye Irmak Dogan , Lubos Marcinek , Anna Klezovich , Iolanda Leite , Jonas Beskow

Understanding the contents of multimodal documents is essential to accurately extract relevant evidence and use it for reasoning. Existing document understanding models tend to generate answers with a single word or phrase directly,…

Information Retrieval · Computer Science 2024-08-15 Jinxu Zhang

Visual Grounding, also known as Referring Expression Comprehension and Phrase Grounding, aims to ground the specific region(s) within the image(s) based on the given expression text. This task simulates the common referential relationships…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Linhui Xiao , Xiaoshan Yang , Xiangyuan Lan , Yaowei Wang , Changsheng Xu

With the rise of knowledge graph based retrieval-augmented generation (RAG) techniques such as GraphRAG and Pike-RAG, the role of knowledge graphs in enhancing the reasoning capabilities of large language models (LLMs) has become…

Information Retrieval · Computer Science 2025-04-15 Hairong Zhang , Jiaheng Si , Guohang Yan , Boyuan Qi , Pinlong Cai , Song Mao , Ding Wang , Botian Shi

Domain-specific QA systems require not just generative fluency but high factual accuracy grounded in structured expert knowledge. While recent Retrieval-Augmented Generation (RAG) frameworks improve context recall, they struggle with…

Computation and Language · Computer Science 2025-05-26 David Osei Opoku , Ming Sheng , Yong Zhang

In recent years, Multimodal Large Language Models (MLLMs) have achieved remarkable progress on a wide range of multimodal benchmarks. Despite these advances, most existing benchmarks mainly focus on single-image or multi-image…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Bingli Wang , Huanze Tang , Haijun Lv , Zhishan Lin , Lixin Gu , Lei Feng , Qipeng Guo , Kai Chen

Multi-modal large language models (MLLMs) have achieved remarkable success in fine-grained visual understanding across a range of tasks. However, they often encounter significant challenges due to inadequate alignment for fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Wei Wang , Zhaowei Li , Qi Xu , Linfeng Li , YiQing Cai , Botian Jiang , Hang Song , Xingcan Hu , Pengyu Wang , Li Xiao

Large language models (LLMs) encode a vast amount of semantic knowledge and possess remarkable understanding and reasoning capabilities. Previous work has explored how to ground LLMs in robotic tasks to generate feasible and executable…

Robotics · Computer Science 2024-09-17 Yanjiang Guo , Yen-Jen Wang , Lihan Zha , Jianyu Chen

Large language models (LLMs) have demonstrated remarkable capabilities in a wide range of tasks, yet their application to specialized domains remains challenging due to the need for deep expertise. Retrieval-Augmented generation (RAG) has…

Computation and Language · Computer Science 2025-09-30 Qinggang Zhang , Shengyuan Chen , Yuanchen Bei , Zheng Yuan , Huachi Zhou , Zijin Hong , Hao Chen , Yilin Xiao , Chuang Zhou , Junnan Dong , Yi Chang , Xiao Huang

Graph Retrieval Augmented Generation (GraphRAG) has garnered increasing recognition for its potential to enhance large language models (LLMs) by structurally organizing domain-specific corpora and facilitating complex reasoning. However,…

Computation and Language · Computer Science 2025-06-23 Yilin Xiao , Junnan Dong , Chuang Zhou , Su Dong , Qian-wen Zhang , Di Yin , Xing Sun , Xiao Huang