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Retrieval Augmented Generation (RAG) has emerged as a crucial technique for enhancing the accuracy of Large Language Models (LLMs) by incorporating external information. With the advent of LLMs that support increasingly longer context…

Machine Learning · Computer Science 2024-11-07 Quinn Leng , Jacob Portes , Sam Havens , Matei Zaharia , Michael Carbin

Retrieval-augmented generation (RAG) has shown impressive capability in providing reliable answer predictions and addressing hallucination problems. A typical RAG implementation uses powerful retrieval models to extract external information…

Information Retrieval · Computer Science 2024-11-19 Ziwei Liu , Liang Zhang , Qian Li , Jianghua Wu , Guangxu Zhu

Retrieval-Augmented Generation (RAG) grounds large language models with external evidence, but many implementations rely on pre-built indices that remain static after construction. Related queries therefore repeat similar multi-hop…

Artificial Intelligence · Computer Science 2026-03-03 Yifan Wang , Mingxuan Jiang , Zhihao Sun , Yixin Cao , Yicun Liu , Keyang Chen , Guangnan Ye , Hongfeng Chai

Large Language Models (LLMs) excel in various language tasks but they often generate incorrect information, a phenomenon known as "hallucinations". Retrieval-Augmented Generation (RAG) aims to mitigate this by using document retrieval for…

Information Retrieval · Computer Science 2024-07-18 Hamin Koo , Minseon Kim , Sung Ju Hwang

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by incorporating external knowledge to generate a response within a context with improved accuracy and reduced hallucinations. However, multi-modal RAG systems face…

Machine Learning · Computer Science 2025-01-09 Matin Mortaheb , Mohammad A. Amir Khojastepour , Srimat T. Chakradhar , Sennur Ulukus

Retrieval-Augmented Generation (RAG) systems combine dense retrievers and language models to ground LLM outputs in retrieved documents. However, the opacity of how these components interact creates challenges for deployment in high-stakes…

Computation and Language · Computer Science 2026-01-30 Korbinian Randl , Guido Rocchietti , Aron Henriksson , Ziawasch Abedjan , Tony Lindgren , John Pavlopoulos

Large language models (LLMs) can enhance factuality via retrieval-augmented generation (RAG), but applying RAG to every query is unnecessary when the model-only answer is reliable. This motivates cascaded RAG: each query is first handled by…

Computation and Language · Computer Science 2026-05-20 Zijun Jia , Yuanchang Ye , Sen Jia , Yiyao Qian , Haoning Wang , Baojie Chen , Diyin Tang , Jinsong Yu , Zhiyuan Wang

The rapid growth of medical knowledge and increasing complexity of clinical practice pose challenges. In this context, large language models (LLMs) have demonstrated value; however, inherent limitations remain. Retrieval-augmented…

Large Language Models (LLMs) have been integrated into recommender systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant items…

Information Retrieval · Computer Science 2025-03-27 Sichun Luo , Jian Xu , Xiaojie Zhang , Linrong Wang , Sicong Liu , Hanxu Hou , Linqi Song

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) systems rely on retrieval models for identifying relevant contexts and answer generation models for utilizing those contexts. However, retrievers exhibit imperfect recall and precision, limiting…

Computation and Language · Computer Science 2026-04-29 Jerry Huang , Siddarth Madala , Risham Sidhu , Cheng Niu , Hao Peng , Julia Hockenmaier , Tong Zhang

Retrieval-Augmented Generation (RAG) integrates external knowledge with Large Language Models (LLMs) to enhance factual correctness and mitigate hallucination. However, dense retrievers often become the bottleneck of RAG systems due to…

Computation and Language · Computer Science 2025-10-27 Yuan Li , Qi Luo , Xiaonan Li , Bufan Li , Qinyuan Cheng , Bo Wang , Yining Zheng , Yuxin Wang , Zhangyue Yin , Xipeng Qiu

Retrieval-augmented generation (RAG) is considered to be a promising approach to alleviate the hallucination issue of large language models (LLMs), and it has received widespread attention from researchers recently. Due to the limitation in…

Information Retrieval · Computer Science 2024-06-11 Hengran Zhang , Ruqing Zhang , Jiafeng Guo , Maarten de Rijke , Yixing Fan , Xueqi Cheng

Retrieval-Augmented Generation (RAG) aims to enhance large language models (LLMs) to generate more accurate and reliable answers with the help of the retrieved context from external knowledge sources, thereby reducing the incidence of…

Computation and Language · Computer Science 2024-10-17 Jintao Liu , Ruixue Ding , Linhao Zhang , Pengjun Xie , Fie Huang

The Retrieval-Augmented Generation (RAG) framework introduces a retrieval module to dynamically inject retrieved information into the input context of large language models (LLMs), and has demonstrated significant success in various NLP…

Information Retrieval · Computer Science 2025-05-27 Yi Jiang , Sendong Zhao , Jianbo Li , Haochun Wang , Bing Qin

Cross-lingual retrieval-augmented generation (RAG) is a critical capability for retrieving and generating answers across languages. Prior work in this context has mostly focused on generation and relied on benchmarks derived from…

Computation and Language · Computer Science 2025-10-28 Chen Amiraz , Yaroslav Fyodorov , Elad Haramaty , Zohar Karnin , Liane Lewin-Eytan

Retrieval-Augmented Generation (RAG) is essential for integrating external knowledge into Large Language Model (LLM) outputs. While the literature on RAG is growing, it primarily focuses on systematic reviews and comparisons of new…

Computation and Language · Computer Science 2024-04-02 Matouš Eibich , Shivay Nagpal , Alexander Fred-Ojala

Considering the limited internal parametric knowledge, retrieval-augmented generation (RAG) has been widely used to extend the knowledge scope of large language models (LLMs). Despite the extensive efforts on RAG research, in existing…

Computation and Language · Computer Science 2024-11-22 Yuhao Wang , Ruiyang Ren , Junyi Li , Wayne Xin Zhao , Jing Liu , Ji-Rong Wen

Question answering systems (QA) utilizing Large Language Models (LLMs) heavily depend on the retrieval component to provide them with domain-specific information and reduce the risk of generating inaccurate responses or hallucinations.…

Computation and Language · Computer Science 2024-06-11 Ashkan Alinejad , Krtin Kumar , Ali Vahdat

Retrieval-Augmented Generation (RAG) integrates non-parametric knowledge into Large Language Models (LLMs), typically from unstructured texts and structured graphs. While recent progress has advanced text-based RAG to multi-turn reasoning…

Computation and Language · Computer Science 2025-12-11 Yucan Guo , Miao Su , Saiping Guan , Zihao Sun , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng