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Existing multimodal Retrieval-Augmented Generation (RAG) methods for visually rich documents (VRD) are often biased towards retrieving salient knowledge(e.g., prominent text and visual elements), while largely neglecting the critical…

Information Retrieval · Computer Science 2025-11-26 Anyang Tong , Xiang Niu , ZhiPing Liu , Chang Tian , Yanyan Wei , Zenglin Shi , Meng Wang

Despite the strong abilities, large language models (LLMs) still suffer from hallucinations and reliance on outdated knowledge, raising concerns in knowledge-intensive tasks. Graph-based retrieval-augmented generation (GRAG) enriches LLMs…

Computation and Language · Computer Science 2026-01-14 Derong Xu , Pengyue Jia , Xiaopeng Li , Yingyi Zhang , Maolin Wang , Qidong Liu , Xiangyu Zhao , Yichao Wang , Huifeng Guo , Ruiming Tang , Enhong Chen , Tong Xu

Retrieval-Augmented Generation (RAG) improves large language models by retrieving external knowledge, often truncated into smaller chunks due to the input context window, which leads to information loss, resulting in response hallucinations…

Computation and Language · Computer Science 2025-11-18 Jie Zhang , Bo Tang , Wanzi Shao , Wenqiang Wei , Jihao Zhao , Jianqing Zhu , Zhiyu li , Wen Xi , Zehao Lin , Feiyu Xiong , Yanchao Tan

Retrieval-Augmented Generation (RAG) systems commonly use chunking strategies for retrieval, which enhance large language models (LLMs) by enabling them to access external knowledge, ensuring that the retrieved information is up-to-date and…

Computation and Language · Computer Science 2025-07-15 Hai Toan Nguyen , Tien Dat Nguyen , Viet Ha Nguyen

Retrieval-augmented generation (RAG) improves the response quality of large language models (LLMs) by retrieving knowledge from external databases. Typical RAG approaches split the text database into chunks, organizing them in a flat…

Computation and Language · Computer Science 2025-11-18 Boyu Chen , Zirui Guo , Zidan Yang , Yuluo Chen , Junze Chen , Zhenghao Liu , Chuan Shi , Cheng Yang

We introduce a novel graph-based Retrieval-Augmented Generation (RAG) framework specifically designed for the medical domain, called \textbf{MedGraphRAG}, aimed at enhancing Large Language Model (LLM) capabilities for generating…

Computer Vision and Pattern Recognition · Computer Science 2024-10-17 Junde Wu , Jiayuan Zhu , Yunli Qi , Jingkun Chen , Min Xu , Filippo Menolascina , Vicente Grau

Retrieval-augmented generation (RAG) is a common way to ground language models in external documents and up-to-date information. Classical retrieval systems relied on lexical methods such as BM25, which rank documents by term overlap with…

Computation and Language · Computer Science 2026-03-05 Martin Asenov , Kenza Benkirane , Dan Goldwater , Aneiss Ghodsi

The rapid development of next-generation networking technologies underscores their transformative role in revolutionizing modern communication systems, enabling faster, more reliable, and highly interconnected solutions. However, such…

Networking and Internet Architecture · Computer Science 2024-12-11 Yang Xiong , Ruichen Zhang , Yinqiu Liu , Dusit Niyato , Zehui Xiong , Ying-Chang Liang , Shiwen Mao

Question answering over visually rich documents (VRDs) requires reasoning not only over isolated content but also over documents' structural organization and cross-page dependencies. However, conventional retrieval-augmented generation…

Computation and Language · Computer Science 2026-03-03 Zhivar Sourati , Zheng Wang , Marianne Menglin Liu , Yazhe Hu , Mengqing Guo , Sujeeth Bharadwaj , Kyu Han , Tao Sheng , Sujith Ravi , Morteza Dehghani , Dan Roth

Graph Retrieval-Augmented Generation (GraphRAG) enhances factual reasoning in LLMs by structurally modeling knowledge through graph-based representations. However, existing GraphRAG approaches face two core limitations: shallow retrieval…

Computation and Language · Computer Science 2025-10-01 Cehao Yang , Xiaojun Wu , Xueyuan Lin , Chengjin Xu , Xuhui Jiang , Yuanliang Sun , Jia Li , Hui Xiong , Jian Guo

Retrieval-Augmented Generation (RAG) represents a major advancement in natural language processing (NLP), combining large language models (LLMs) with information retrieval systems to enhance factual grounding, accuracy, and contextual…

Computation and Language · Computer Science 2025-07-28 Agada Joseph Oche , Ademola Glory Folashade , Tirthankar Ghosal , Arpan Biswas

Hierarchical data is common in many domains like life sciences and e-commerce, and its embeddings often play a critical role. While hyperbolic embeddings offer a theoretically grounded approach to representing hierarchies in low-dimensional…

Machine Learning · Computer Science 2026-04-15 Hui Yang , Jiaoyan Chen

Large Language Models (LLMs) showcase remarkable abilities, yet they struggle with limitations such as hallucinations, outdated knowledge, opacity, and inexplicable reasoning. To address these challenges, Retrieval-Augmented Generation…

Computation and Language · Computer Science 2024-10-03 Sourav Verma

Knowledge Graph-based Retrieval-Augmented Generation (KG-RAG) significantly enhances the reasoning capabilities of LargeLanguage Models by leveraging structured knowledge. However, existing KG-RAG frameworks typically operate as open-loop…

Information Retrieval · Computer Science 2025-08-14 Xujie Yuan , Shimin Di , Jielong Tang , Libin Zheng , Jian Yin

Retrieval-augmented generation (RAG) and its graph-based extensions (GraphRAG) are effective paradigms for improving large language model (LLM) reasoning by grounding generation in external knowledge. However, most existing RAG and GraphRAG…

Information Retrieval · Computer Science 2026-04-14 Dongzhe Fan , Zheyi Xue , Siyuan Liu , Qiaoyu Tan

Developing the capacity to effectively search for requisite datasets is an urgent requirement to assist data users in identifying relevant datasets considering the very limited available metadata. For this challenge, the utilization of…

Information Retrieval · Computer Science 2024-10-08 Teruaki Hayashi , Hiroki Sakaji , Jiayi Dai , Randy Goebel

Retrieval-Augmented Generation (RAG) has shown substantial promise in improving factual accuracy by grounding model responses with external knowledge relevant to queries. However, most existing approaches are limited to a text-only corpus,…

Computation and Language · Computer Science 2026-05-19 Woongyeong Yeo , Kangsan Kim , Soyeong Jeong , Jinheon Baek , Sung Ju Hwang

Large language models (LLMs) commonly struggle with specialized or emerging topics which are rarely seen in the training corpus. Graph-based retrieval-augmented generation (GraphRAG) addresses this by structuring domain knowledge as a graph…

Information Retrieval · Computer Science 2025-06-05 Zhefan Wang , Huanjun Kong , Jie Ying , Wanli Ouyang , Nanqing Dong

Retrieval-Augmented Generation (RAG) has become a robust framework for enhancing Large Language Models (LLMs) with external knowledge. Recent advances in RAG have investigated graph based retrieval for intricate reasoning; however, the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Tejas Sarnaik , Manan Shah , Ravi Hegde

Retrieval-Augmented Generation (RAG) encounters efficiency challenges when scaling to massive knowledge bases while preserving contextual relevance. We propose Hash-RAG, a framework that integrates deep hashing techniques with systematic…

Information Retrieval · Computer Science 2025-06-04 Jinyu Guo , Xunlei Chen , Qiyang Xia , Zhaokun Wang , Jie Ou , Libo Qin , Shunyu Yao , Wenhong Tian