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Document Visual Question Answering (DocVQA) faces dual challenges in processing lengthy multimodal documents (text, images, tables) and performing cross-modal reasoning. Current document retrieval-augmented generation (DocRAG) methods…

Information Retrieval · Computer Science 2025-11-10 Kuicai Dong , Yujing Chang , Shijie Huang , Yasheng Wang , Ruiming Tang , Yong Liu

Retrieval-Augmented Generation (RAG) systems critically depend on how external knowledge is segmented, structured, and retrieved. Most existing approaches either retrieve fixed-length text chunks, which fragments discourse context, or…

Information Retrieval · Computer Science 2026-04-21 Mengzhu Chen , Haodong Yang , Jia Cai , Xiaolin Huang

Visual Question-Answering (VQA) is a challenging multimodal task that requires integrating visual and textual information to generate accurate responses. While multimodal Retrieval-Augmented Generation (mRAG) has shown promise in enhancing…

Computation and Language · Computer Science 2026-01-29 Zhuo Chen , Xinyu Geng , Xinyu Wang , Yong Jiang , Zhen Zhang , Pengjun Xie , Kewei Tu

While Retrieval-Augmented Generation (RAG) augments Large Language Models (LLMs) with external knowledge, conventional single-agent RAG remains fundamentally limited in resolving complex queries demanding coordinated reasoning across…

Computation and Language · Computer Science 2025-04-18 Pei Liu , Xin Liu , Ruoyu Yao , Junming Liu , Siyuan Meng , Ding Wang , Jun Ma

Leveraging the autonomous decision-making capabilities of large language models (LLMs) has demonstrated superior performance in reasoning tasks. However, despite the success of iterative or agentic retrieval-augmented generation (RAG)…

Artificial Intelligence · Computer Science 2025-08-28 Wenfeng Feng , Chuzhan Hao , Yuewei Zhang , Guochao Jiang , Jingyi Song , Hao Wang

Large Language Models (LLMs) demonstrate strong reasoning abilities but face limitations such as hallucinations and outdated knowledge. Knowledge Graph (KG)-based Retrieval-Augmented Generation (RAG) addresses these issues by grounding LLM…

Computation and Language · Computer Science 2025-03-04 Mufei Li , Siqi Miao , Pan Li

Large multimodal models (LMMs) have achieved impressive progress in vision-language understanding, yet they face limitations in real-world applications requiring complex reasoning over a large number of images. Existing benchmarks for…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Jun Chen , Dannong Xu , Junjie Fei , Chun-Mei Feng , Mohamed Elhoseiny

Retrieval-augmented generation (RAG) equips large language models (LLMs) with reliable knowledge memory. To strengthen cross-text associations, recent research integrates graphs and hypergraphs into RAG to capture pairwise and multi-entity…

Information Retrieval · Computer Science 2026-02-10 Xingliang Hou , Yuyan Liu , Qi Sun , haoxiu wang , Hao Hu , Shaoyi Du , Zhiqiang Tian

This study addresses the critical need for enhanced situational awareness in autonomous driving (AD) by leveraging the contextual reasoning capabilities of large language models (LLMs). Unlike traditional perception systems that rely on…

Artificial Intelligence · Computer Science 2025-01-09 Xuewen Luo , Fan Ding , Fengze Yang , Yang Zhou , Junnyong Loo , Hwa Hui Tew , Chenxi Liu

Retrieval-Augmented Generation (RAG) has become a widely adopted paradigm for enhancing the reliability of large language models (LLMs). However, RAG systems are sensitive to retrieval strategies that rely on text chunking to construct…

Information Retrieval · Computer Science 2026-03-31 Sun Xu , Tongkai Xu , Baiheng Xie , Li Huang , Qiang Gao , Kunpeng Zhang

Large Language Models (LLMs) demonstrate strong reasoning capabilities but struggle with hallucinations and limited transparency. Recently, KG-enhanced LLMs that integrate knowledge graphs (KGs) have been shown to improve reasoning…

Artificial Intelligence · Computer Science 2025-12-10 Minbae Park , Hyemin Yang , Jeonghyun Kim , Kunsoo Park , Hyunjoon Kim

Retrieval-Augmented Generation (RAG) has emerged as an effective paradigm for expanding the knowledge capacity of Multimodal Large Language Models (MLLMs) by incorporating external knowledge sources into the generation process, and has been…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Xu Yuan , Liangbo Ning , Qingqing Ye , Wenqi Fan , Qing Li

Tabular data is frequently captured in image form across a wide range of real-world scenarios such as financial reports, handwritten records, and document scans. These visual representations pose unique challenges for machine understanding,…

Artificial Intelligence · Computer Science 2026-02-10 Zhuoyan Xu , Haoyang Fang , Boran Han , Bonan Min , Bernie Wang , Cuixiong Hu , Shuai Zhang

Large Language Models (LLMs) have demonstrated significant potential across various domains. However, they often struggle with integrating external knowledge and performing complex reasoning, leading to hallucinations and unreliable…

Machine Learning · Computer Science 2025-11-25 Yao Cheng , Yibo Zhao , Jiapeng Zhu , Yao Liu , Xing Sun , Xiang Li

Recent advancements in QA with LLM, like GPT-4, have shown limitations in handling complex multi-hop queries. We propose AT-RAG, a novel multistep RAG incorporating topic modeling for efficient document retrieval and reasoning. Using…

Computation and Language · Computer Science 2024-10-18 Mohammad Reza Rezaei , Maziar Hafezi , Amit Satpathy , Lovell Hodge , Ebrahim Pourjafari

Advanced Multimodal Large Language Models (MLLMs) struggle with recent Knowledge-based VQA tasks, such as INFOSEEK and Encyclopedic-VQA, due to their limited and frozen knowledge scope, often leading to ambiguous and inaccurate responses.…

Artificial Intelligence · Computer Science 2024-11-25 Tao Zhang , Ziqi Zhang , Zongyang Ma , Yuxin Chen , Zhongang Qi , Chunfeng Yuan , Bing Li , Junfu Pu , Yuxuan Zhao , Zehua Xie , Jin Ma , Ying Shan , Weiming Hu

Retrieval Augmented Generation (RAG) has become the standard approach for equipping Large Language Models (LLMs) with up-to-date knowledge. However, standard RAG, relying on independent passage retrieval, often fails to capture the…

Computation and Language · Computer Science 2025-11-20 Jingjin Wang , Jiawei Han

Large Language Models (LLMs) excel at reasoning and generation but are inherently limited by static pretraining data, resulting in factual inaccuracies and weak adaptability to new information. Retrieval-Augmented Generation (RAG) addresses…

Computation and Language · Computer Science 2025-11-03 Qi Luo , Xiaonan Li , Yuxin Wang , Tingshuo Fan , Yuan Li , Xinchi Chen , Xipeng Qiu

Retrieval-Augmented Generation (RAG) has been introduced to mitigate hallucinations in Multimodal Large Language Models (MLLMs) by incorporating external knowledge into the generation process, and it has become a widely adopted approach for…

Artificial Intelligence · Computer Science 2026-03-17 Zhuohang Jiang , Pangjing Wu , Xu Yuan , Wenqi Fan , Qing Li

Graph-based Retrieval-Augmented Generation (GraphRAG) advances flat document retrieval by structuring knowledge as relational graphs, enabling more coherent and effective reasoning. However, applying it to specific domains like legal…

Computation and Language · Computer Science 2026-05-28 Zerui Chen , Qinggang Zhang , Zhishang Xiang , Zhimin Wei , Linfeng Gao , Xiao Huang , Zhihong Zhang , Jinsong Su