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Related papers: ROG: Retrieval-Augmented LLM Reasoning for Complex…

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Retrieval-Augmented Generation (RAG) systems enhance large language models (LLMs) by integrating external knowledge sources, enabling more accurate and contextually relevant responses tailored to user needs. However, existing RAG systems…

Information Retrieval · Computer Science 2025-04-29 Zirui Guo , Lianghao Xia , Yanhua Yu , Tu Ao , Chao Huang

Graph-based retrieval-augmented generation (Graph-based RAG) has demonstrated significant potential in enhancing Large Language Models (LLMs) with structured knowledge. However, existing methods face three critical challenges: Inaccurate…

Machine Learning · Computer Science 2026-03-18 Yubo Wang , Haoyang Li , Fei Teng , Lei Chen

Retrieval-Augmented Generation (RAG) significantly improves the performance of Large Language Models (LLMs) on knowledge-intensive tasks. However, varying response quality across LLMs under RAG necessitates intelligent routing mechanisms,…

Computation and Language · Computer Science 2025-10-20 Jiarui Zhang , Xiangyu Liu , Yong Hu , Chaoyue Niu , Fan Wu , Guihai Chen

Graph-based retrieval-augmented generation (RAG) methods, typically built on knowledge graphs (KGs) with binary relational facts, have shown promise in multi-hop open-domain QA. However, their rigid retrieval schemes and dense similarity…

Computation and Language · Computer Science 2026-02-17 Wen-Sheng Lien , Yu-Kai Chan , Hao-Lung Hsiao , Bo-Kai Ruan , Meng-Fen Chiang , Chien-An Chen , Yi-Ren Yeh , Hong-Han Shuai

Knowledge graphs (KGs), with their structured representation capabilities, offer promising avenue for enhancing Retrieval Augmented Generation (RAG) systems, leading to the development of KG-RAG systems. Nevertheless, existing methods often…

Information Retrieval · Computer Science 2025-10-17 Yikuan Hu , Jifeng Zhu , Lanrui Tang , Chen Huang

Retrieval-Augmented Generation (RAG) improves Large Language Models (LLMs) by retrieving supporting documents into the prompt, but existing methods do not explicitly target queries that require fetching multiple documents with substantially…

Large Language Models (LLMs) exhibit strong reasoning capabilities in complex tasks. However, they still struggle with hallucinations and factual errors in knowledge-intensive scenarios like knowledge graph question answering (KGQA). We…

Computation and Language · Computer Science 2025-11-12 Songze Li , Zhiqiang Liu , Zhengke Gui , Huajun Chen , Wen Zhang

Retrieval Augmented Generation (RAG) is a promising technique for mitigating two key limitations of large language models (LLMs): outdated information and hallucinations. RAG system stores documents as embedding vectors in a database. Given…

Information Retrieval · Computer Science 2026-02-10 Taehee Jeong , Xingzhe Zhao , Peizu Li , Markus Valvur , Weihua Zhao

Overcoming the limited context limitations in early-generation LLMs, retrieval-augmented generation (RAG) has been a reliable solution for context-based answer generation in the past. Recently, the emergence of long-context LLMs allows the…

Computation and Language · Computer Science 2024-09-04 Tan Yu , Anbang Xu , Rama Akkiraju

In customer service technical support, swiftly and accurately retrieving relevant past issues is critical for efficiently resolving customer inquiries. The conventional retrieval methods in retrieval-augmented generation (RAG) for large…

Information Retrieval · Computer Science 2024-05-07 Zhentao Xu , Mark Jerome Cruz , Matthew Guevara , Tie Wang , Manasi Deshpande , Xiaofeng Wang , Zheng Li

Retrieval-Augmented Generation (RAG) based on Large Language Models (LLMs) is a powerful solution to understand and query the industry's closed-source documents. However, basic RAG often struggles with complex QA tasks in legal and…

Information Retrieval · Computer Science 2025-09-08 Huifeng Lin , Gang Su , Jintao Liang , You Wu , Rui Zhao , Ziyue Li

Retrieval-Augmented Generation (RAG) has gained significant popularity in modern Large Language Models (LLMs) due to its effectiveness in introducing new knowledge and reducing hallucinations. However, the deep understanding of RAG remains…

Computation and Language · Computer Science 2024-10-07 Jingyu Liu , Jiaen Lin , Yong Liu

Retrieval-augmented generation (RAG) has emerged as a paradigm for grounding large language models in external knowledge, yet most existing RAG systems assume centralized knowledge access and ample computation. These assumptions break down…

Information Retrieval · Computer Science 2026-05-28 Tianhao Gao , Kai Yang , Yiyang Li

Large language models (LLMs) struggle with the factual error during inference due to the lack of sufficient training data and the most updated knowledge, leading to the hallucination problem. Retrieval-Augmented Generation (RAG) has gained…

Information Retrieval · Computer Science 2026-01-22 Zulun Zhu , Tiancheng Huang , Kai Wang , Junda Ye , Xinghe Chen , Siqiang Luo

Retrieval-Augmented Generation (RAG) methods enhance LLM performance by efficiently filtering relevant context for LLMs, reducing hallucinations and inference cost. However, most existing RAG methods focus on single-step retrieval, which is…

Graph Retrieval Augmented Generation (GRAG) is a novel paradigm that takes the naive RAG system a step further by integrating graph information, such as knowledge graph (KGs), into large-scale language models (LLMs) to mitigate…

Artificial Intelligence · Computer Science 2025-01-27 Xujian Liang , Zhaoquan Gu

In this paper, we investigate the retrieval-augmented generation (RAG) based on Knowledge Graphs (KGs) to improve the accuracy and reliability of Large Language Models (LLMs). Recent approaches suffer from insufficient and repetitive…

Computation and Language · Computer Science 2024-04-22 Xinke Jiang , Ruizhe Zhang , Yongxin Xu , Rihong Qiu , Yue Fang , Zhiyuan Wang , Jinyi Tang , Hongxin Ding , Xu Chu , Junfeng Zhao , Yasha Wang

Retrieval Augmented Generation (RAG) provides the necessary informational grounding to LLMs in the form of chunks retrieved from a vector database or through web search. RAG could also use knowledge graph triples as a means of providing…

Information Retrieval · Computer Science 2026-03-31 Shalin Shah , Srikanth Ryali , Ramasubbu Venkatesh

Retrieval-Augmented Generation enhances language models by retrieving external knowledge to support informed and grounded responses. However, traditional RAG methods rely on fragment-level retrieval, limiting their ability to address…

Information Retrieval · Computer Science 2026-05-05 Wenbiao Tao , Xinyuan Li , Yunshi Lan , Weining Qian

Large language models (LLMs) offer new opportunities for constructing knowledge graphs (KGs) from unstructured clinical narratives. However, existing approaches often rely on structured inputs and lack robust validation of factual accuracy…

Artificial Intelligence · Computer Science 2026-01-06 Udiptaman Das , Krishnasai B. Atmakuri , Duy Ho , Chi Lee , Yugyung Lee
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