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Federated Retrieval-Augmented Generation (Federated RAG) combines Federated Learning (FL), which enables distributed model training without exposing raw data, with Retrieval-Augmented Generation (RAG), which improves the factual accuracy of…

Computation and Language · Computer Science 2025-09-03 Abhijit Chakraborty , Chahana Dahal , Vivek Gupta

Organizations seeking to utilize Large Language Models (LLMs) for knowledge querying and analysis often encounter challenges in maintaining an LLM fine-tuned on targeted, up-to-date information that keeps answers relevant and grounded.…

Large Language Models (LLMs) have empowered generative recommendation systems through fine-tuning user behavior data. However, utilizing the user data may pose significant privacy risks, potentially leading to ethical dilemmas and…

Information Retrieval · Computer Science 2025-02-25 Jujia Zhao , Wenjie Wang , Chen Xu , See-Kiong Ng , Tat-Seng Chua

Federated Recommendation (FR) is a new learning paradigm to tackle the learn-to-rank problem in a privacy-preservation manner. How to integrate multi-modality features into federated recommendation is still an open challenge in terms of…

Information Retrieval · Computer Science 2026-03-02 Chunxu Zhang , Weipeng Zhang , Guodong Long , Zhiheng Xue , Riting Xia , Bo Yang

Large Language Models (LLMs) have been integrated into recommender systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant items…

Information Retrieval · Computer Science 2025-03-27 Sichun Luo , Jian Xu , Xiaojie Zhang , Linrong Wang , Sicong Liu , Hanxu Hou , Linqi Song

Recommender systems have become increasingly vital in our daily lives, helping to alleviate the problem of information overload across various user-oriented online services. The emergence of Large Language Models (LLMs) has yielded…

Information Retrieval · Computer Science 2025-05-29 Shijie Wang , Wenqi Fan , Yue Feng , Shanru Lin , Xinyu Ma , Shuaiqiang Wang , Dawei Yin

Federated Recommendation (FedRec) has emerged as a key paradigm for building privacy-preserving recommender systems. However, existing FedRec models face a critical dilemma: memory-efficient single-knowledge models suffer from a suboptimal…

Information Retrieval · Computer Science 2025-11-19 Jaehyung Lim , Wonbin Kweon , Woojoo Kim , Junyoung Kim , Dongha Kim , Hwanjo Yu

Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by grounding generation in external knowledge to improve factuality and reduce hallucinations. Yet most deployments assume a centralized corpus, which is infeasible…

Computation and Language · Computer Science 2026-02-06 Zhilin Liang , Yuxiang Wang , Zimu Zhou , Hainan Zhang , Boyi Liu , Yongxin Tong

Large Language Models (LLMs) have demonstrated significant potential in medical Question Answering (QA), yet they remain prone to hallucinations and ungrounded reasoning, limiting their reliability in high-stakes clinical scenarios. While…

Information Retrieval · Computer Science 2026-01-09 Jessica Ryan , Alexander I. Gumilang , Robert Wiliam , Derwin Suhartono

Large Language Models (LLMs) have been integrated into recommendation systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant…

Information Retrieval · Computer Science 2025-02-12 Jian Xu , Sichun Luo , Xiangyu Chen , Haoming Huang , Hanxu Hou , Linqi Song

Retrieval-Augmented Generation (RAG) has recently emerged as a promising solution for enhancing the accuracy and credibility of Large Language Models (LLMs), particularly in Question & Answer tasks. This is achieved by incorporating…

Computation and Language · Computer Science 2025-04-29 Qianren Mao , Qili Zhang , Hanwen Hao , Zhentao Han , Runhua Xu , Weifeng Jiang , Qi Hu , Zhijun Chen , Tyler Zhou , Bo Li , Yangqiu Song , Jin Dong , Jianxin Li , Philip S. Yu

Large language models (LLMs) inherently display hallucinations since the precision of generated texts cannot be guaranteed purely by the parametric knowledge they include. Although retrieval-augmented generation (RAG) systems enhance the…

Artificial Intelligence · Computer Science 2025-02-18 Bingyu Wan , Fuxi Zhang , Zhongpeng Qi , Jiayi Ding , Jijun Li , Baoshi Fan , Yijia Zhang , Jun Zhang

Federated search systems aggregate results from multiple search engines, selecting appropriate sources to enhance result quality and align with user intent. With the increasing uptake of Retrieval-Augmented Generation (RAG) pipelines,…

Information Retrieval · Computer Science 2024-02-20 Shuai Wang , Ekaterina Khramtsova , Shengyao Zhuang , Guido Zuccon

Large language models (LLMs) achieve remarkable performance across domains but remain prone to hallucinations and inconsistencies. Retrieval-augmented generation (RAG) mitigates these issues by augmenting model inputs with relevant…

Machine Learning · Computer Science 2026-04-10 Akash Dhasade , Rachid Guerraoui , Anne-Marie Kermarrec , Diana Petrescu , Rafael Pires , Mathis Randl , Martijn de Vos

Retrieval-augmented generation (RAG) has emerged as a paradigm for grounding large language models in external knowledge, yet most existing RAG systems assume centralized knowledge access and ample computation. These assumptions break down…

Information Retrieval · Computer Science 2026-05-28 Tianhao Gao , Kai Yang , Yiyang Li

Retrieval Augmented Generation (RAG) is a promising technique for mitigating two key limitations of large language models (LLMs): outdated information and hallucinations. RAG system stores documents as embedding vectors in a database. Given…

Information Retrieval · Computer Science 2026-02-10 Taehee Jeong , Xingzhe Zhao , Peizu Li , Markus Valvur , Weihua Zhao

The application of Large Language Models (LLMs) in recommender systems faces key challenges in delivering deep personalization and intelligent reasoning, especially for interactive scenarios. Current methods are often constrained by limited…

Information Retrieval · Computer Science 2025-10-17 Jiani Huang , Xingchen Zou , Lianghao Xia , Qing Li

Federated recommendations (FRs) have emerged as an on-device privacy-preserving paradigm, attracting considerable attention driven by rising demands for data security. Existing FRs predominantly adapt ID embeddings to represent items,…

Information Retrieval · Computer Science 2026-04-10 Kang Fu , Honglei Zhang , Zikai Zhang , Jundong Chen , Xin Zhou , Zhiqi Shen , Dusit Niyato , Yidong Li

Retrieval-augmented generation (RAG) techniques have emerged as a promising solution to enhance the reliability of large language models (LLMs) by addressing issues like hallucinations, outdated knowledge, and domain adaptation. In…

Computation and Language · Computer Science 2025-01-28 Weihang Su , Yichen Tang , Qingyao Ai , Junxi Yan , Changyue Wang , Hongning Wang , Ziyi Ye , Yujia Zhou , Yiqun Liu

Retrieval-augmented generation (RAG) has proven effective in integrating knowledge into large language models (LLMs). However, conventional RAGs struggle to capture complex relationships between pieces of knowledge, limiting their…

Information Retrieval · Computer Science 2025-12-12 Linhao Luo , Zicheng Zhao , Gholamreza Haffari , Dinh Phung , Chen Gong , Shirui Pan
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