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Retrieval-augmented generation (RAG) methods can enhance the performance of LLMs by incorporating retrieved knowledge chunks into the generation process. In general, the retrieval and generation steps usually have different requirements for…

Information Retrieval · Computer Science 2025-04-16 Peiru Yang , Xintian Li , Zhiyang Hu , Jiapeng Wang , Jinhua Yin , Huili Wang , Lizhi He , Shuai Yang , Shangguang Wang , Yongfeng Huang , Tao Qi

Despite their impressive capabilities, large language models (LLMs) often face challenges such as temporal misalignment and generating hallucinatory content. Enhancing LLMs with retrieval mechanisms to fetch relevant information from…

Computation and Language · Computer Science 2024-06-21 Yige Shen , Hao Jiang , Hua Qu , Jihong Zhao

The integration of external knowledge through Retrieval-Augmented Generation (RAG) has become foundational in enhancing large language models (LLMs) for knowledge-intensive tasks. However, existing RAG paradigms often overlook the cognitive…

Artificial Intelligence · Computer Science 2025-09-24 Yu Wang , Shiwan Zhao , Zhihu Wang , Ming Fan , Xicheng Zhang , Yubo Zhang , Zhengfan Wang , Heyuan Huang , Ting Liu

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by integrating external knowledge retrieved from a knowledge base. However, its effectiveness is fundamentally constrained by the reliability of both the retriever…

Computation and Language · Computer Science 2025-01-31 Yiteng Tu , Weihang Su , Yujia Zhou , Yiqun Liu , Qingyao Ai

Retrieval-augmented generation has gained significant attention due to its ability to integrate relevant external knowledge, enhancing the accuracy and reliability of the LLMs' responses. Most of the existing methods apply a dynamic…

Computation and Language · Computer Science 2025-01-13 Liang Xiao , Wen Dai , Shuai Chen , Bin Qin , Chongyang Shi , Haopeng Jing , Tianyu Guo

Large language models (LLMs) continue to struggle with knowledge-intensive questions that require up-to-date information and multi-hop reasoning. Augmenting LLMs with hybrid external knowledge, such as unstructured text and structured…

Machine Learning · Computer Science 2026-02-12 Junhong Lin , Bing Zhang , Song Wang , Ziyan Liu , Dan Gutfreund , Julian Shun , Yada Zhu

Recent advances in large language models (LLMs) have led to impressive progress in natural language generation, yet their tendency to produce hallucinated or unsubstantiated content remains a critical concern. To improve factual…

Computation and Language · Computer Science 2025-05-20 Xukai Liu , Ye Liu , Shiwen Wu , Yanghai Zhang , Yihao Yuan , Kai Zhang , Qi Liu

Large language models (LLMs) often struggle with knowledge-intensive tasks due to hallucinations and outdated parametric knowledge. While Retrieval-Augmented Generation (RAG) addresses this by integrating external corpora, its effectiveness…

Computation and Language · Computer Science 2026-02-04 Su Dong , Qinggang Zhang , Yilin Xiao , Shengyuan Chen , Chuang Zhou , Xiao Huang

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

Retrieval-Augmented Generation (RAG) systems have emerged as a promising solution to enhance large language models (LLMs) by integrating external knowledge retrieval with generative capabilities. While significant advancements have been…

Human-Computer Interaction · Computer Science 2025-08-11 Sizhe Cheng , Jiaping Li , Huanchen Wang , Yuxin Ma

Retrieval-augmented generation (RAG) has emerged as a promising paradigm for enhancing large language models (LLMs) on multi-hop question answering (QA), which requires reasoning over evidence from multiple documents. Current multi-hop RAG…

Computation and Language · Computer Science 2026-05-28 Yikai Zhu , Kunfeng Chen , Qihuang Zhong , Juhua Liu , Bo Du

Retrieval-augmented generation (RAG) effectively addresses issues of static knowledge and hallucination in large language models. Existing studies mostly focus on question scenarios with clear user intents and concise answers. However, it…

Computation and Language · Computer Science 2025-02-18 Shuting Wang , Xin Yu , Mang Wang , Weipeng Chen , Yutao Zhu , Zhicheng Dou

The efficient processing of long context poses a serious challenge for large language models (LLMs). Recently, retrieval-augmented generation (RAG) has emerged as a promising strategy for this problem, as it enables LLMs to make selective…

Computation and Language · Computer Science 2025-02-18 Kun Luo , Zheng Liu , Peitian Zhang , Hongjin Qian , Jun Zhao , Kang Liu

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by incorporating additional information from retrieval. However, studies have shown that LLMs still face challenges in effectively using the retrieved information,…

Computation and Language · Computer Science 2024-06-13 Shicheng Xu , Liang Pang , Mo Yu , Fandong Meng , Huawei Shen , Xueqi Cheng , Jie Zhou

With the ever-increasing demands on Question Answering (QA) systems for IT operations and maintenance, an efficient and supervised fine-tunable framework is necessary to ensure the data security, private deployment and continuous upgrading.…

Artificial Intelligence · Computer Science 2025-06-04 Tianyang Zhang , Zhuoxuan Jiang , Shengguang Bai , Tianrui Zhang , Lin Lin , Yang Liu , Jiawei Ren

Retrieval-augmented generation (RAG) connects large language models (LLMs) to external knowledge, but single-round retrieval is often insufficient for complex multi-hop questions. To enhance search capabilities for complex tasks, most…

Computation and Language · Computer Science 2026-05-27 Kun Chen , Qingchao Kong , Zhao Feifei , Wenji Mao

Large language models (LLMs) exhibit remarkable capabilities but often produce inaccurate responses, as they rely solely on their embedded knowledge. Retrieval-Augmented Generation (RAG) enhances LLMs by incorporating an external…

Computation and Language · Computer Science 2024-09-25 Nitin Aravind Birur , Tanay Baswa , Divyanshu Kumar , Jatan Loya , Sahil Agarwal , Prashanth Harshangi

Large language models (LLMs) have achieved strong empirical performance in various fields, benefiting from their huge amount of parameters that store knowledge. However, LLMs still suffer from several key issues, such as hallucination…

Computation and Language · Computer Science 2026-05-20 Shangyu Wu , Ying Xiong , Yufei Cui , Haolun Wu , Can Chen , Ye Yuan , Lianming Huang , Xue Liu , Tei-Wei Kuo , Nan Guan , Chun Jason Xue

Large Language Models (LLMs) often generate inaccurate responses (hallucinations) when faced with questions beyond their knowledge scope. Retrieval-Augmented Generation (RAG) addresses this by leveraging external knowledge, but a critical…

Information Retrieval · Computer Science 2025-09-10 Haoxiang Jin , Ronghan Li , Zixiang Lu , Qiguang Miao

Temporal knowledge graph question answering (TKGQA) involves multi-hop reasoning over temporally constrained entity relationships in the knowledge graph to answer a given question. However, at each hop, large language models (LLMs) retrieve…

Artificial Intelligence · Computer Science 2026-01-06 Wuzhenghong Wen , Chao Xue , Su Pan , Yuwei Sun , Minlong Peng