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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

Retrieval-Augmented Generation (RAG) has shown significant improvements in various natural language processing tasks by integrating the strengths of large language models (LLMs) and external knowledge databases. However, RAG introduces long…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-04-26 Chao Jin , Zili Zhang , Xuanlin Jiang , Fangyue Liu , Xin Liu , Xuanzhe Liu , Xin Jin

Retrieval-augmented generation (RAG) is critical for reducing hallucinations and incorporating external knowledge into Large Language Models (LLMs). However, advanced RAG systems face a trade-off between performance and efficiency.…

Information Retrieval · Computer Science 2025-08-05 Shengbo Gong , Xianfeng Tang , Carl Yang , Wei jin

The rapid evolution of mobile edge computing (MEC) has introduced significant challenges in optimizing resource allocation in highly dynamic wireless communication systems, in which task offloading decisions should be made in real-time.…

Signal Processing · Electrical Eng. & Systems 2024-12-31 Runtao Ren , Yinyu Wu , Xuhui Zhang , Jinke Ren , Yanyan Shen , Shuqiang Wang , Kim-Fung Tsang

Retrieval-augmented generation (RAG) is a promising method for addressing some of the memory-related challenges associated with Large Language Models (LLMs). Two separate systems form the RAG pipeline, the retriever and the reader, and the…

Computation and Language · Computer Science 2024-11-13 Alexandria Leto , Cecilia Aguerrebere , Ishwar Bhati , Ted Willke , Mariano Tepper , Vy Ai Vo

Long text classification is challenging for Large Language Models (LLMs) due to token limits and high computational costs. This study explores whether a Retrieval Augmented Generation (RAG) approach using only the most relevant text…

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm for enhancing the performance of large language models (LLMs) by integrating external knowledge into the generation process. A key component of RAG pipelines is the…

Computation and Language · Computer Science 2025-04-07 Yuwei An , Yihua Cheng , Seo Jin Park , Junchen Jiang

Retrieval-augmented generation (RAG) is increasingly deployed in enterprise search and document-centric assistants, where responses must be grounded in long and complex source materials. In practice, verifying that generated answers…

Computation and Language · Computer Science 2026-03-26 Xunzhuo Liu , Bowei He , Xue Liu , Haichen Zhang , Huamin Chen

Large Language Models (LLMs) have shown remarkable capabilities across diverse tasks, yet they face inherent limitations such as constrained parametric knowledge and high retraining costs. Retrieval-Augmented Generation (RAG) augments the…

Information Retrieval · Computer Science 2025-08-26 Leqian Li , Dianxi Shi , Jialu Zhou , Xinyu Wei , Mingyue Yang , Songchang Jin , Shaowu Yang

Humans understand long and complex texts by relying on a holistic semantic representation of the content. This global view helps organize prior knowledge, interpret new information, and integrate evidence dispersed across a document, as…

Computation and Language · Computer Science 2026-05-29 Yuqing Li , Jiangnan Li , Zheng Lin , Ziyan Zhou , Junjie Wu , Weiping Wang , Jie Zhou , Mo Yu

Retrieval-Augmented Generation (RAG) compensates for the static knowledge limitations of Large Language Models (LLMs) by integrating external knowledge, producing responses with enhanced factual correctness and query-specific…

Computation and Language · Computer Science 2025-05-21 Ruobing Yao , Yifei Zhang , Shuang Song , Neng Gao , Chenyang Tu

Real-world live retrieval-augmented generation (RAG) systems face significant challenges when processing user queries that are often noisy, ambiguous, and contain multiple intents. While RAG enhances large language models (LLMs) with…

Computation and Language · Computer Science 2025-06-27 Guanting Dong , Xiaoxi Li , Yuyao Zhang , Mengjie Deng

Single-step retrieval-augmented generation (RAG) provides an efficient way to incorporate external information for simple question answering tasks but struggles with complex questions. Agentic RAG extends this paradigm by replacing…

Computation and Language · Computer Science 2026-05-08 Yijia Zheng , Marcel Worring

Long-context large language models (LC LLMs) combined with retrieval-augmented generation (RAG) hold strong potential for complex multi-hop and large-document tasks. However, existing RAG systems often suffer from imprecise retrieval,…

Computation and Language · Computer Science 2025-05-22 Woosang Lim , Zekun Li , Gyuwan Kim , Sungyoung Ji , HyeonJung Kim , Kyuri Choi , Jin Hyuk Lim , Kyungpyo Park , William Yang Wang

Retrieval-Augmented Generation (RAG) systems have revolutionized information retrieval and question answering, but traditional text-based chunking methods struggle with complex document structures, multi-page tables, embedded figures, and…

Machine Learning · Computer Science 2025-07-15 Vishesh Tripathi , Tanmay Odapally , Indraneel Das , Uday Allu , Biddwan Ahmed

Large language models (LLMs) often struggle with knowledge-intensive tasks due to hallucinations and outdated parametric knowledge. While Retrieval-Augmented Generation (RAG) addresses this by integrating external corpora, its effectiveness…

Computation and Language · Computer Science 2026-02-04 Su Dong , Qinggang Zhang , Yilin Xiao , Shengyuan Chen , Chuang Zhou , Xiao Huang

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by integrating external knowledge sources to address their limitations in accessing up-to-date or specialized information. A natural strategy to increase the…

Computation and Language · Computer Science 2025-11-10 Song Wang , Zihan Chen , Peng Wang , Zhepei Wei , Zhen Tan , Yu Meng , Cong Shen , Jundong Li

Large language models often encounter challenges with static knowledge and hallucinations, which undermine their reliability. Retrieval-augmented generation (RAG) mitigates these issues by incorporating external information. However, user…

Information Retrieval · Computer Science 2024-11-21 Zhicong Li , Jiahao Wang , Zhishu Jiang , Hangyu Mao , Zhongxia Chen , Jiazhen Du , Yuanxing Zhang , Fuzheng Zhang , Di Zhang , Yong Liu

Retrieval-Augmented Generation (RAG) has become a foundational paradigm for equipping large language models (LLMs) with external knowledge, playing a critical role in information retrieval and knowledge-intensive applications. However,…

Computation and Language · Computer Science 2025-06-10 Weihang Su , Qingyao Ai , Jingtao Zhan , Qian Dong , Yiqun Liu

Recent advances in Large Language Models (LLMs) have significantly improved complex reasoning capabilities. Retrieval-Augmented Generation (RAG) has further extended these capabilities by grounding generation in dynamically retrieved…

Computation and Language · Computer Science 2026-02-23 Jash Rajesh Parekh , Pengcheng Jiang , Jiawei Han