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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

Recent advances in Retrieval-Augmented Generation (RAG) have revolutionized knowledge-intensive tasks, yet traditional RAG methods struggle when the search space is unknown or when documents are semi-structured or structured. We introduce a…

Information Retrieval · Computer Science 2026-03-25 Manie Tadayon , Mayank Gupta

Graph Retrieval-Augmented Generation (GRAG or Graph RAG) architectures aim to enhance language understanding and generation by leveraging external knowledge. However, effectively capturing and integrating the rich semantic information…

Computation and Language · Computer Science 2025-01-29 Karishma Thakrar

We designed a Retrieval-Augmented Generation (RAG) system to provide large language models with relevant documents for answering domain-specific questions about Pittsburgh and Carnegie Mellon University (CMU). We extracted over 1,800…

Machine Learning · Computer Science 2024-11-22 Haojia Sun , Yaqi Wang , Shuting Zhang

Unsupervised keyphrase prediction has gained growing interest in recent years. However, existing methods typically rely on heuristically defined importance scores, which may lead to inaccurate informativeness estimation. In addition, they…

Computation and Language · Computer Science 2025-06-02 Lam Thanh Do , Aaditya Bodke , Pritom Saha Akash , Kevin Chen-Chuan Chang

Retrieval-Augmented Generation (RAG) is a technique that enhances the capabilities of large language models (LLMs) by incorporating external knowledge sources. This method addresses common LLM limitations, including outdated information and…

Computation and Language · Computer Science 2024-07-16 Yuanjie Lyu , Zhiyu Li , Simin Niu , Feiyu Xiong , Bo Tang , Wenjin Wang , Hao Wu , Huanyong Liu , Tong Xu , Enhong Chen

Paraphrase generation is an important task in natural language processing. Previous works focus on sentence-level paraphrase generation, while ignoring document-level paraphrase generation, which is a more challenging and valuable task. In…

Computation and Language · Computer Science 2021-09-16 Zhe Lin , Yitao Cai , Xiaojun Wan

Retrieval-Augmented Generation (RAG) systems for question answering typically retrieve evidence by semantic similarity between the query and document chunks. While effective for unstructured text, this approach is less reliable on…

This study aims to improve the accuracy and quality of large-scale language models (LLMs) in answering questions by integrating Elasticsearch into the Retrieval Augmented Generation (RAG) framework. The experiment uses the Stanford Question…

Information Retrieval · Computer Science 2024-10-21 Jiajing Chen , Runyuan Bao , Hongye Zheng , Zhen Qi , Jianjun Wei , Jiacheng Hu

Generating knowledge-intensive and comprehensive long texts, such as encyclopedia articles, remains significant challenges for Large Language Models. It requires not only the precise integration of facts but also the maintenance of thematic…

Computation and Language · Computer Science 2025-03-04 Hongchao Gu , Dexun Li , Kuicai Dong , Hao Zhang , Hang Lv , Hao Wang , Defu Lian , Yong Liu , Enhong Chen

Retrieval-Augmented Generation (RAG) systems commonly use chunking strategies for retrieval, which enhance large language models (LLMs) by enabling them to access external knowledge, ensuring that the retrieved information is up-to-date and…

Computation and Language · Computer Science 2025-07-15 Hai Toan Nguyen , Tien Dat Nguyen , Viet Ha Nguyen

Safe and trustworthy use of Large Language Models (LLM) in the processing of healthcare documents and scientific papers could substantially help clinicians, scientists and policymakers in overcoming information overload and focusing on the…

Retrieval-Augmented Generation (RAG) has emerged as a way to complement the in-context knowledge of Large Language Models (LLMs) by integrating external documents. However, real-world applications demand not only accuracy but also…

Computation and Language · Computer Science 2025-07-31 Kazuki Hayashi , Hidetaka Kamigaito , Shinya Kouda , Taro Watanabe

Retrieval-augmented generation integrates the capabilities of large language models with relevant information retrieved from an extensive corpus, yet encounters challenges when confronted with real-world noisy data. One recent solution is…

Computation and Language · Computer Science 2025-09-30 Kun Zhu , Xiaocheng Feng , Xiyuan Du , Yuxuan Gu , Weijiang Yu , Haotian Wang , Qianglong Chen , Zheng Chu , Jingchang Chen , Bing Qin

Retrieval-Augmented Generation (RAG) helps large language models (LLMs) answer knowledge-intensive and time-sensitive questions by conditioning generation on external evidence. However, most RAG systems still retrieve unstructured chunks…

Computation and Language · Computer Science 2026-03-11 Jiashuo Sun , Yixuan Xie , Jimeng Shi , Shaowen Wang , Jiawei Han

The Differentiable Search Index (DSI) is an emerging paradigm for information retrieval. Unlike traditional retrieval architectures where index and retrieval are two different and separate components, DSI uses a single transformer model to…

Information Retrieval · Computer Science 2023-07-10 Shengyao Zhuang , Houxing Ren , Linjun Shou , Jian Pei , Ming Gong , Guido Zuccon , Daxin Jiang

Despite their remarkable capabilities, large language models (LLMs) often produce responses containing factual inaccuracies due to their sole reliance on the parametric knowledge they encapsulate. Retrieval-Augmented Generation (RAG), an ad…

Computation and Language · Computer Science 2023-10-19 Akari Asai , Zeqiu Wu , Yizhong Wang , Avirup Sil , Hannaneh Hajishirzi

Retrieval augmented generation (RAG), while effectively integrating external knowledge to address the inherent limitations of large language models (LLMs), can be hindered by imperfect retrieval that contain irrelevant, misleading, or even…

Computation and Language · Computer Science 2025-06-03 Fei Wang , Xingchen Wan , Ruoxi Sun , Jiefeng Chen , Sercan Ö. Arık

Text-to-image generation increasingly demands access to domain-specific, fine-grained, and rapidly evolving knowledge that pretrained models cannot fully capture, necessitating the integration of retrieval methods. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Mengdan Zhu , Senhao Cheng , Guangji Bai , Yifei Zhang , Liang Zhao

We propose XRAG, a novel benchmark designed to evaluate the generation abilities of LLMs in cross-lingual Retrieval-Augmented Generation (RAG) settings where the user language does not match the retrieval results. XRAG is constructed from…

Computation and Language · Computer Science 2025-05-16 Wei Liu , Sony Trenous , Leonardo F. R. Ribeiro , Bill Byrne , Felix Hieber