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Graph-based Retrieval-Augmented Generation (GraphRAG) constructs the Knowledge Graph (KG) from external databases to enhance the timeliness and accuracy of Large Language Model (LLM) generations. However, this reliance on external data…

Machine Learning · Computer Science 2026-03-17 Qizhi Chen , Chao Qi , Yihong Huang , Muquan Li , Rongzheng Wang , Dongyang Zhang , Ke Qin , Shuang Liang

Large language models (LLMs) have achieved remarkable success due to their exceptional generative capabilities. Despite their success, they also have inherent limitations such as a lack of up-to-date knowledge and hallucination.…

Cryptography and Security · Computer Science 2024-08-14 Wei Zou , Runpeng Geng , Binghui Wang , Jinyuan Jia

Large language models (LLMs) have demonstrated impressive natural language processing abilities but face challenges such as hallucination and outdated knowledge. Retrieval-Augmented Generation (RAG) has emerged as a state-of-the-art…

Cryptography and Security · Computer Science 2026-01-09 Baolei Zhang , Yuxi Chen , Zhuqing Liu , Lihai Nie , Tong Li , Zheli Liu , Minghong Fang

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by retrieving external data to mitigate hallucinations and outdated knowledge issues. Benefiting from the strong ability in facilitating diverse data sources and…

Cryptography and Security · Computer Science 2025-07-15 Tianzhe Zhao , Jiaoyan Chen , Yanchi Ru , Haiping Zhu , Nan Hu , Jun Liu , Qika Lin

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 become a common practice in multimodal large language models (MLLM) to enhance factual grounding and reduce hallucination. Yet, its reliance on retrieval exposes MLLMs to knowledge poisoning attacks,…

Graph-based Retrieval-Augmented Generation (GraphRAG) enhances the reasoning capabilities of Large Language Models (LLMs) by grounding their responses in structured knowledge graphs. Leveraging community detection and relation filtering…

Computation and Language · Computer Science 2026-04-06 Yilin Xiao , Jin Chen , Qinggang Zhang , Yujing Zhang , Chuang Zhou , Longhao Yang , Lingfei Ren , Xin Yang , Xiao Huang

Retrieval-Augmented Generation (RAG) has emerged as a powerful approach to boost the capabilities of large language models (LLMs) by incorporating external, up-to-date knowledge sources. However, this introduces a potential vulnerability to…

Machine Learning · Computer Science 2026-03-30 Kennedy Edemacu , Vinay M. Shashidhar , Micheal Tuape , Dan Abudu , Beakcheol Jang , Jong Wook Kim

Large Language Models (LLMs) are constrained by outdated information and a tendency to generate incorrect data, commonly referred to as "hallucinations." Retrieval-Augmented Generation (RAG) addresses these limitations by combining the…

Cryptography and Security · Computer Science 2024-06-07 Jiaqi Xue , Mengxin Zheng , Yebowen Hu , Fei Liu , Xun Chen , Qian Lou

Large Language Models (LLMs) enhanced with Retrieval-Augmented Generation (RAG) have shown improved performance in generating accurate responses. However, the dependence on external knowledge bases introduces potential security…

Cryptography and Security · Computer Science 2026-04-10 Zhiyuan Chang , Mingyang Li , Xiaojun Jia , Junjie Wang , Yuekai Huang , Ziyou Jiang , Yang Liu , Qing Wang

Retrieval-Augmented Generation (RAG) systems enhance response credibility and traceability by displaying reference contexts, but this transparency simultaneously introduces a novel black-box attack vector. Existing document poisoning…

Computation and Language · Computer Science 2026-01-27 Runqi Sui

Multimodal retrieval-augmented generation (RAG) enhances the visual reasoning capability of vision-language models (VLMs) by dynamically accessing information from external knowledge bases. In this work, we introduce \textit{Poisoned-MRAG},…

Cryptography and Security · Computer Science 2025-03-17 Yinuo Liu , Zenghui Yuan , Guiyao Tie , Jiawen Shi , Pan Zhou , Lichao Sun , Neil Zhenqiang Gong

Retrieval Augmented Generation (RAG) frameworks improve the accuracy of large language models (LLMs) by integrating external knowledge from retrieved documents, thereby overcoming the limitations of models' static intrinsic knowledge.…

Information Retrieval · Computer Science 2025-09-19 Jingjie Zheng , Aryo Pradipta Gema , Giwon Hong , Xuanli He , Pasquale Minervini , Youcheng Sun , Qiongkai Xu

Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak

Large language models (LLMs) have transformed natural language processing (NLP), enabling applications from content generation to decision support. Retrieval-Augmented Generation (RAG) improves LLMs by incorporating external knowledge but…

Cryptography and Security · Computer Science 2025-11-11 Zirui Cheng , Jikai Sun , Anjun Gao , Yueyang Quan , Zhuqing Liu , Xiaohua Hu , Minghong Fang

Large language models (LLMs) demonstrate exceptional performance across a variety of tasks, yet they are often affected by hallucinations and the timeliness of knowledge. Leveraging knowledge graphs (KGs) as external knowledge sources has…

Computation and Language · Computer Science 2024-12-31 Siyuan Fang , Kaijing Ma , Tianyu Zheng , Xinrun Du , Ningxuan Lu , Ge Zhang , Qingkun Tang

Retrieval-Augmented Generation (RAG) enriches the input to LLMs by retrieving information from the relevant knowledge database, enabling them to produce responses that are more accurate and contextually appropriate. It is worth noting that…

Cryptography and Security · Computer Science 2025-09-01 Xue Tan , Hao Luan , Mingyu Luo , Xiaoyan Sun , Ping Chen , Jun Dai

Ensuring factual accuracy while maintaining the creative capabilities of Large Language Model Agents (LMAs) poses significant challenges in the development of intelligent agent systems. LMAs face prevalent issues such as information…

Artificial Intelligence · Computer Science 2024-05-21 Diego Sanmartin

Large Language Models (LLMs) demonstrate strong reasoning abilities but face limitations such as hallucinations and outdated knowledge. Knowledge Graph (KG)-based Retrieval-Augmented Generation (RAG) addresses these issues by grounding LLM…

Computation and Language · Computer Science 2025-03-04 Mufei Li , Siqi Miao , Pan Li

Retrieval-augmented generation (RAG) is a widely adopted paradigm for enhancing LLMs in medical applications by incorporating expert multimodal knowledge during generation. However, the underlying retrieval databases may naturally contain,…

Cryptography and Security · Computer Science 2026-05-12 Peiru Yang , Haoran Zheng , Tong Ju , Shiting Wang , Wanchun Ni , Jiajun Liu , Shangguang Wang , Yongfeng Huang , Tao Qi
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