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Understanding information from visually rich documents remains a significant challenge for traditional Retrieval-Augmented Generation (RAG) methods. Existing benchmarks predominantly focus on image-based question answering (QA), overlooking…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Qiuchen Wang , Ruixue Ding , Zehui Chen , Weiqi Wu , Shihang Wang , Pengjun Xie , Feng Zhao

Recent GraphRAG methods integrate graph structures into text indexing and retrieval, using knowledge graph triples to connect text chunks, thereby improving retrieval coverage and precision. However, we observe that treating text chunks as…

Information Retrieval · Computer Science 2026-04-24 Yanning Hou , Duanyang Yuan , Sihang Zhou , Xiaoshu Chen , Ke Liang , Siwei Wang , Xinwang Liu , Jian Huang

The indexing-retrieval-generation paradigm of retrieval-augmented generation (RAG) has been highly successful in solving knowledge-intensive tasks by integrating external knowledge into large language models (LLMs). However, the…

Cryptography and Security · Computer Science 2025-02-25 Xun Liang , Simin Niu , Zhiyu Li , Sensen Zhang , Hanyu Wang , Feiyu Xiong , Jason Zhaoxin Fan , Bo Tang , Shichao Song , Mengwei Wang , Jiawei Yang

Retrieval-Augmented Generation (RAG) has proven effective for knowledge synthesis, yet it encounters significant challenges in practical scenarios where data is inherently discrete and fragmented. In most environments, information is…

Artificial Intelligence · Computer Science 2026-01-09 Zhen Chen , Weihao Xie , Peilin Chen , Shiqi Wang , Jianping Wang

Retrieval-Augmented Generation (RAG) systems fail when documents evolve through versioning-a ubiquitous characteristic of technical documentation. Existing approaches achieve only 58-64% accuracy on version-sensitive questions, retrieving…

Information Retrieval · Computer Science 2025-10-10 Daniel Huwiler , Kurt Stockinger , Jonathan Fürst

Federated search systems aggregate results from multiple search engines, selecting appropriate sources to enhance result quality and align with user intent. With the increasing uptake of Retrieval-Augmented Generation (RAG) pipelines,…

Information Retrieval · Computer Science 2024-02-20 Shuai Wang , Ekaterina Khramtsova , Shengyao Zhuang , Guido Zuccon

Retrieval-Augmented Generation (RAG) systems face significant challenges in complex reasoning, multi-hop queries, and domain-specific QA. While existing GraphRAG frameworks have made progress in structural knowledge organization, they still…

Artificial Intelligence · Computer Science 2026-05-27 Jie Wang , Honghua Huang , Xi Ge , Jianhui Su , Wen Liu , Shiguo Lian

Keyphrase is an efficient representation of the main idea of documents. While background knowledge can provide valuable information about documents, they are rarely incorporated in keyphrase extraction methods. In this paper, we propose…

Computation and Language · Computer Science 2018-03-28 Yang Yu , Vincent Ng

Graph Retrieval-Augmented Generation (GraphRAG) is dominated by a retrieve-then-reason paradigm, where context is retrieved using heuristics and then reasoned over. Such methods struggle to adapt to the query-specific logic required for…

Information Retrieval · Computer Science 2026-05-20 Larnell Moore , Naihao Deng , Rada Mihalcea , Farnaz Jahanbakhsh

We present a new dataset of Wikipedia articles each paired with a knowledge graph, to facilitate the research in conditional text generation, graph generation and graph representation learning. Existing graph-text paired datasets typically…

Computation and Language · Computer Science 2021-07-21 Luyu Wang , Yujia Li , Ozlem Aslan , Oriol Vinyals

Retrieval-Augmented Generation (RAG) has proven effective in integrating external knowledge into large language models (LLMs) for solving question-answer (QA) tasks. The state-of-the-art RAG approaches often use the graph data as the…

Information Retrieval · Computer Science 2026-05-12 Shu Wang , Yixiang Fang , Yingli Zhou , Xilin Liu , Yuchi Ma

Knowledge graphs (KGs) have the advantage of providing fine-grained detail for question-answering systems. Unfortunately, building a reliable KG is time-consuming and expensive as it requires human intervention. To overcome this issue, we…

Computation and Language · Computer Science 2021-03-12 Seunghak Yu , Tianxing He , James Glass

Retrieval-Augmented Generation (RAG) has emerged as a powerful framework for enhancing the capabilities of Large Language Models (LLMs) by integrating retrieval-based methods with generative models. As external knowledge repositories…

Computation and Language · Computer Science 2025-11-14 Shuyi Liu , Yuming Shang , Xi Zhang

Retrieval-augmented generation (RAG) remains unreliable in long-form settings, where retrieved evidence is noisy or contradictory, making it difficult for RAG pipelines to maintain factual consistency. Existing approaches focus on retrieval…

Computation and Language · Computer Science 2026-04-21 Qingying Niu , Yuhao Wang , Ruiyang Ren , Bohui Fang , Wayne Xin Zhao

Retrieval-Augmented Generation (RAG) enhances large language models by incorporating external knowledge. However, existing vector-based methods often fail on global sensemaking tasks that require reasoning across many documents. GraphRAG…

Information Retrieval · Computer Science 2026-03-06 Jakir Hossain , Ahmet Erdem Sarıyüce

Graph Retrieval-Augmented Generation (Graph-RAG) enhances multihop question answering by organizing corpora into knowledge graphs and routing evidence through relational structure. However, practical deployments face two persistent…

Information Retrieval · Computer Science 2026-01-30 Jiate Liu , Zebin Chen , Shaobo Qiao , Mingchen Ju , Danting Zhang , Bocheng Han , Shuyue Yu , Xin Shu , Jingling Wu , Dong Wen , Xin Cao , Guanfeng Liu , Zhengyi Yang

GraphRAG extends retrieval-augmented generation by organizing corpora as explicit knowledge graphs, enabling graph-based retrieval for complex question answering. However, existing frameworks extract entities and relations within individual…

Computation and Language · Computer Science 2026-05-28 Jiaming Zhang , Yibo Zhao , Jing Yu , Jianxiang Yu , Xiang Li

Graph retrieval-augmented generation (GraphRAG) has effectively enhanced large language models in complex reasoning by organizing fragmented knowledge into explicitly structured graphs. Prior efforts have been made to improve either graph…

Information Retrieval · Computer Science 2025-09-04 Junnan Dong , Siyu An , Yifei Yu , Qian-Wen Zhang , Linhao Luo , Xiao Huang , Yunsheng Wu , Di Yin , Xing Sun

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

Understanding multimodal long-context documents that comprise multimodal chunks such as paragraphs, figures, and tables is challenging due to (1) cross-modal heterogeneity to localize relevant information across modalities, (2) cross-page…

Information Retrieval · Computer Science 2026-02-16 Yongyue Zhang , Yaxiong Wu