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Retrieval-augmented generation (RAG) has emerged as a leading approach to reducing hallucinations in large language models (LLMs). Current RAG evaluation benchmarks primarily focus on what we call local RAG: retrieving relevant chunks from…

Computation and Language · Computer Science 2025-11-05 Qi Luo , Xiaonan Li , Tingshuo Fan , Xinchi Chen , Xipeng Qiu

In knowledge-intensive tasks such as open-domain question answering (OpenQA), large language models (LLMs) often struggle to generate factual answers, relying solely on their internal (parametric) knowledge. To address this limitation,…

Computation and Language · Computer Science 2025-04-29 Jinming Nian , Zhiyuan Peng , Qifan Wang , Yi Fang

Retrieval-augmented generation (RAG) has become the standard way to ground large language models in external knowledge, but many systems still organize evidence as flat chunks and retrieve it through largely unstructured search. This weak…

Computation and Language · Computer Science 2026-05-26 Miaohe Niu , Lianlei Shan , Zhengtao Yu , Jingbo Zhu , Tong Xiao

Recently, Large Vision Language Models (LVLMs) have unlocked many complex use cases that require Multi-Modal (MM) understanding (e.g., image captioning or visual question answering) and MM generation (e.g., text-guided image generation or…

Information Retrieval · Computer Science 2025-03-11 Sahel Sharifymoghaddam , Shivani Upadhyay , Wenhu Chen , Jimmy Lin

Recently, Retrieval Augmented Generation (RAG) has shifted focus to multi-retrieval approaches to tackle complex tasks such as multi-hop question answering. However, these systems struggle to decide when to stop searching once enough…

Information Retrieval · Computer Science 2026-04-23 Gabriel Iturra-Bocaz , Petra Galuscakova

Large language models (LLMs) frequently generate confident yet factually incorrect content when used for language generation (a phenomenon often known as hallucination). Retrieval augmented generation (RAG) tries to reduce factual errors by…

Information Retrieval · Computer Science 2026-04-01 Dobrik Georgiev , Kheeran Naidu , Alberto Cattaneo , Federico Monti , Carlo Luschi , Daniel Justus

Retrieval-Augmented Generation (RAG) has emerged as a reliable external knowledge augmentation technique to mitigate hallucination issues and parameterized knowledge limitations in Large Language Models (LLMs). Existing adaptive RAG (ARAG)…

Computation and Language · Computer Science 2025-04-08 Qingfei Zhao , Ruobing Wang , Yukuo Cen , Daren Zha , Shicheng Tan , Jie Tang

Standard Retrieval-Augmented Generation (RAG) systems predominantly rely on semantic relevance as a proxy for utility. However, this assumption collapses in realistic decision-making scenarios where user queries are laden with cognitive…

Computation and Language · Computer Science 2026-05-05 Peiyang Liu , Qiang Yan , Ziqiang Cui , Di Liang , Xi Wang , Wei Ye

Retrieval-Augmented Generation (RAG) improves factual grounding by incorporating external knowledge into language model generation. However, when retrieved context is noisy, unreliable, or inconsistent with the model's parametric knowledge,…

Computation and Language · Computer Science 2026-04-06 Jaemin Kim , Jong Chul Ye

Retrieval-Augmented Generation (RAG) enhances language models by retrieving and incorporating relevant external knowledge. However, traditional retrieve-and-generate processes may not be optimized for real-world scenarios, where queries…

Computation and Language · Computer Science 2025-02-28 Ingeol Baek , Hwan Chang , Byeongjeong Kim , Jimin Lee , Hwanhee Lee

Retrieval-Augmented Generation (RAG) plays a crucial role in grounding Large Language Models by leveraging external knowledge, whereas the effectiveness is often compromised by the retrieval of contextually flawed or incomplete information.…

Artificial Intelligence · Computer Science 2025-11-13 Yaoze Zhang , Rong Wu , Pinlong Cai , Xiaoman Wang , Guohang Yan , Song Mao , Ding Wang , Botian Shi

Retrieval-Augmented Generation (RAG) couples a retriever with a large language model (LLM) to ground generated responses in external evidence. While this framework enhances factuality and domain adaptability, it faces a key bottleneck:…

Information Retrieval · Computer Science 2026-01-08 Sherine George

Multimodal Retrieval-Augmented Generation (RAG) has emerged as an effective paradigm for enhancing Large Language Models (LLMs) with external knowledge. However, existing multimodal RAG systems predominantly rely on coarse-grained…

Information Retrieval · Computer Science 2026-05-25 Yifan Zhu , Yu Mi , Yue Lu , Yanchu Guan , Zhixuan Chu

Providing external knowledge to Large Language Models (LLMs) is a key point for using these models in real-world applications for several reasons, such as incorporating up-to-date content in a real-time manner, providing access to…

Computation and Language · Computer Science 2024-06-04 Simon Akesson , Frances A. Santos

Graph-based Retrieval-Augmented Generation (Graph-RAG) enhances large language models (LLMs) by structuring retrieval over an external corpus. However, existing approaches typically assume a static corpus, requiring expensive full-graph…

Information Retrieval · Computer Science 2025-07-08 Fangyuan Zhang , Zhengjun Huang , Yingli Zhou , Qintian Guo , Zhixun Li , Wensheng Luo , Di Jiang , Yixiang Fang , Xiaofang Zhou

This research introduces ScoreRAG, an approach to enhance the quality of automated news generation. Despite advancements in Natural Language Processing and large language models, current news generation methods often struggle with…

Computation and Language · Computer Science 2025-06-05 Pei-Yun Lin , Yen-lung Tsai

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by retrieving relevant documents from external sources and incorporating them into the context. While it improves reliability by providing factual texts, it…

Computation and Language · Computer Science 2025-05-07 Yuqiao Tan , Shizhu He , Huanxuan Liao , Jun Zhao , Kang Liu

This paper focuses on the dynamic optimization of the Retrieval-Augmented Generation (RAG) architecture. It proposes a state-aware dynamic knowledge retrieval mechanism to enhance semantic understanding and knowledge scheduling efficiency…

Computation and Language · Computer Science 2025-04-29 Jacky He , Guiran Liu , Binrong Zhu , Hanlu Zhang , Hongye Zheng , Xiaokai Wang

The emergence of long-context large language models (LLMs) offers a promising alternative to traditional retrieval-augmented generation (RAG) for processing extensive documents. However, the computational overhead of long-context inference…

Computation and Language · Computer Science 2025-06-24 Guanzheng Chen , Qilong Feng , Jinjie Ni , Xin Li , Michael Qizhe Shieh

This paper presents a comprehensive study of Retrieval-Augmented Generation (RAG), tracing its evolution from foundational concepts to the current state of the art. RAG combines retrieval mechanisms with generative language models to…

Computation and Language · Computer Science 2024-10-18 Shailja Gupta , Rajesh Ranjan , Surya Narayan Singh