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Retrieval Augmented Generation (RAG) improves correctness of Question Answering (QA) and addresses hallucinations in Large Language Models (LLMs), yet greatly increase computational costs. Besides, RAG is not always needed as may introduce…

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm to enhance large language models (LLMs) by conditioning generation on external evidence retrieved at inference time. While RAG addresses critical limitations of…

Information Retrieval · Computer Science 2025-06-03 Chaitanya Sharma

Large Language Models (LLMs) showcase impressive capabilities but encounter challenges like hallucination, outdated knowledge, and non-transparent, untraceable reasoning processes. Retrieval-Augmented Generation (RAG) has emerged as a…

Computation and Language · Computer Science 2024-03-28 Yunfan Gao , Yun Xiong , Xinyu Gao , Kangxiang Jia , Jinliu Pan , Yuxi Bi , Yi Dai , Jiawei Sun , Meng Wang , Haofen Wang

Large Language Models (LLMs) are capable of natural language understanding and generation. But they face challenges such as hallucination and outdated knowledge. Fine-tuning is one possible solution, but it is resource-intensive and must be…

Computation and Language · Computer Science 2025-07-01 Shadman Sobhan , Mohammad Ariful Haque

Retrieval-augmented generation (RAG) generally enhances large language models' (LLMs) ability to solve knowledge-intensive tasks. But RAG may also lead to performance degradation due to imperfect retrieval and the model's limited ability to…

Computation and Language · Computer Science 2025-05-29 Shuyang Cao , Karthik Radhakrishnan , David Rosenberg , Steven Lu , Pengxiang Cheng , Lu Wang , Shiyue Zhang

Large Language Models (LLMs) exhibit remarkable capabilities but are prone to generating inaccurate or hallucinatory responses. This limitation stems from their reliance on vast pretraining datasets, making them susceptible to errors in…

Computation and Language · Computer Science 2024-04-02 Chi-Min Chan , Chunpu Xu , Ruibin Yuan , Hongyin Luo , Wei Xue , Yike Guo , Jie Fu

Retrieval-Augmented Generation (RAG) has emerged as a critical technique for enhancing large language model (LLM) capabilities. However, practitioners face significant challenges when making RAG deployment decisions. While existing research…

Software Engineering · Computer Science 2025-07-22 Shengming Zhao , Yuchen Shao , Yuheng Huang , Jiayang Song , Zhijie Wang , Chengcheng Wan , Lei Ma

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

While retrieval augmented generation (RAG) has been swiftly adopted in industrial applications based on large language models (LLMs), there is no consensus on what are the best practices for building a RAG system in terms of what are the…

Computation and Language · Computer Science 2026-02-13 Liz Li , Wei Zhu

Retrieval-Augmented Generation (RAG) systems have recently shown remarkable advancements by integrating retrieval mechanisms into language models, enhancing their ability to produce more accurate and contextually relevant responses.…

Computation and Language · Computer Science 2025-01-14 Siran Li , Linus Stenzel , Carsten Eickhoff , Seyed Ali Bahrainian

Retrieval-augmented generation (RAG) is widely utilized to incorporate external knowledge into large language models, thereby enhancing factuality and reducing hallucinations in question-answering (QA) tasks. A standard RAG pipeline…

Computation and Language · Computer Science 2025-10-08 Yiqun Chen , Lingyong Yan , Weiwei Sun , Xinyu Ma , Yi Zhang , Shuaiqiang Wang , Dawei Yin , Yiming Yang , Jiaxin Mao

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

Retrieval-augmented generation (RAG) systems combine document retrieval with a generative model to address complex information seeking tasks like report generation. While the relationship between retrieval quality and generation…

Information Retrieval · Computer Science 2026-04-15 Saron Samuel , Alexander Martin , Eugene Yang , Andrew Yates , Dawn Lawrie , Laura Dietz , Benjamin Van Durme

As one of the most advanced techniques in AI, Retrieval-Augmented Generation (RAG) can offer reliable and up-to-date external knowledge, providing huge convenience for numerous tasks. Particularly in the era of AI-Generated Content (AIGC),…

Computation and Language · Computer Science 2024-06-18 Wenqi Fan , Yujuan Ding , Liangbo Ning , Shijie Wang , Hengyun Li , Dawei Yin , Tat-Seng Chua , Qing Li

Retrieval-augmented generation (RAG) can enhance the generation quality of large language models (LLMs) by incorporating external token databases. However, retrievals from large databases can constitute a substantial portion of the overall…

Computation and Language · Computer Science 2024-03-12 Wenqi Jiang , Shuai Zhang , Boran Han , Jie Wang , Bernie Wang , Tim Kraska

Retrieval-Augmented Generation (RAG) systems are usually defined by the combination of a generator and a retrieval component that extracts textual context from a knowledge base to answer user queries. However, such basic implementations…

Computation and Language · Computer Science 2026-04-21 Pietro Ferrazzi , Milica Cvjeticanin , Alessio Piraccini , Davide Giannuzzi

Retrieval-Augmented Generation (RAG) is an effective approach to enhance the factual accuracy of large language models (LLMs) by retrieving information from external databases, which are typically composed of diverse sources, to supplement…

Machine Learning · Computer Science 2025-10-15 Jeongyeon Hwang , Junyoung Park , Hyejin Park , Dongwoo Kim , Sangdon Park , Jungseul Ok

Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by retrieving relevant memories from an external database. However, existing RAG methods typically organize all memories in a whole database, potentially limiting…

Computation and Language · Computer Science 2024-05-28 Zheng Wang , Shu Xian Teo , Jieer Ouyang , Yongjun Xu , Wei Shi

Retrieval-Augmented Generation (RAG) has emerged as a promising framework to mitigate hallucinations in Large Language Models (LLMs), yet its overall performance is dependent on the underlying retrieval system. In the finance domain,…

Information Retrieval · Computer Science 2025-03-20 Sejong Kim , Hyunseo Song , Hyunwoo Seo , Hyunjun Kim

Retrieval-Augmented Generation (RAG) has emerged as a powerful framework to overcome the knowledge limitations of Large Language Models (LLMs) by integrating external retrieval with language generation. While early RAG systems based on…

Artificial Intelligence · Computer Science 2025-06-13 Jintao Liang , Gang Su , Huifeng Lin , You Wu , Rui Zhao , Ziyue Li