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Information retrieval systems have traditionally optimized for topical relevance-the degree to which retrieved documents match a query. However, relevance only approximates a deeper goal: utility, namely, whether retrieved information helps…

Information Retrieval · Computer Science 2026-04-13 Hengran Zhang , Minghao Tang , Keping Bi , Jiafeng Guo

Retrieval-augmented generation (RAG) has shown promising potential in knowledge intensive question answering (QA). However, existing approaches only consider the query itself, neither specifying the retrieval preferences for the retrievers…

Information Retrieval · Computer Science 2025-02-18 Zhongwu Chen , Chengjin Xu , Dingmin Wang , Zhen Huang , Yong Dou , Xuhui Jiang , Jian Guo

Retrieval-augmented generation (RAG) systems are increasingly deployed in user-facing applications, yet systematic, human-centered evaluation of their outputs remains underexplored. Building on Gienapp's utility-dimension framework, we…

Artificial Intelligence · Computer Science 2025-10-01 Aline Mangold , Kiran Hoffmann

Large Language Models (LLMs) have shown strong capabilities in document re-ranking, a key component in modern Information Retrieval (IR) systems. However, existing LLM-based approaches face notable limitations, including ranking…

Information Retrieval · Computer Science 2025-10-03 Pinhuan Wang , Zhiqiu Xia , Chunhua Liao , Feiyi Wang , Hang Liu

Large language models (LLMs) are essential tools that users employ across various scenarios, so evaluating their performance and guiding users in selecting the suitable service is important. Although many benchmarks exist, they mainly focus…

Computation and Language · Computer Science 2024-09-23 Jiayin Wang , Fengran Mo , Weizhi Ma , Peijie Sun , Min Zhang , Jian-Yun Nie

Large Language Models (LLMs) often struggle with dynamically changing knowledge and handling unknown static information. Retrieval-Augmented Generation (RAG) is employed to tackle these challenges and has a significant impact on improving…

Computation and Language · Computer Science 2025-09-18 Zhen Zhang , Xinyu Wang , Yong Jiang , Zile Qiao , Zhuo Chen , Guangyu Li , Feiteng Mu , Mengting Hu , Pengjun Xie , Fei Huang

Large language models (LLMs) have the remarkable ability to solve new tasks with just a few examples, but they need access to the right tools. Retrieval Augmented Generation (RAG) addresses this problem by retrieving a list of relevant…

Information Retrieval · Computer Science 2023-12-12 Raviteja Anantha , Tharun Bethi , Danil Vodianik , Srinivas Chappidi

Domain-specific intelligence demands specialized knowledge and sophisticated reasoning for problem-solving, posing significant challenges for large language models (LLMs) that struggle with knowledge hallucination and inadequate reasoning…

Computation and Language · Computer Science 2025-05-20 Zhengren Wang , Jiayang Yu , Dongsheng Ma , Zhe Chen , Yu Wang , Zhiyu Li , Feiyu Xiong , Yanfeng Wang , Weinan E , Linpeng Tang , Wentao Zhang

Although Retrieval-Augmented Large Language Models (RALMs) demonstrate their superiority in terms of factuality, they do not consistently outperform the original retrieval-free Language Models (LMs). Our experiments reveal that this…

Artificial Intelligence · Computer Science 2025-03-07 Mingda Li , Xinyu Li , Yifan Chen , Wenfeng Xuan , Weinan Zhang

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) by pulling in external material, document, code, manuals, from vast and ever-growing corpora, to effectively answer user queries. The effectiveness of RAG depends…

Information Retrieval · Computer Science 2025-11-20 Yifan Xu , Vipul Gupta , Rohit Aggarwal , Varsha Mahadevan , Bhaskar Krishnamachari

Retrieval-augmented generation (RAG) enhances large language models (LLMs) with external knowledge to answer questions more accurately. However, research on evaluating RAG systems-particularly the retriever component-remains limited, as…

Information Retrieval · Computer Science 2026-04-21 Lorenz Brehme , Thomas Ströhle , Ruth Breu

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

As retrieval-augmented generation (RAG) becomes more widespread, the role of retrieval is shifting from retrieving information for human browsing to retrieving context for AI reasoning. This shift creates more complex search environments,…

Computation and Language · Computer Science 2026-01-05 Jiawei Zhou , Lei Chen

Retrieval-augmented generation (RAG) with large language models (LLMs) has demonstrated strong performance in multilingual question-answering (QA) tasks by leveraging relevant passages retrieved from corpora. In multilingual RAG (mRAG), the…

Computation and Language · Computer Science 2025-12-12 Jirui Qi , Raquel Fernández , Arianna Bisazza

The emergence of Large Language Models (LLMs) has significantly advanced natural language processing, but these models often generate factually incorrect information, known as "hallucination". Initial retrieval-augmented generation (RAG)…

Computation and Language · Computer Science 2024-11-12 Yujia Zhou , Zheng Liu , Zhicheng Dou

The integration of Retrieval-Augmented Generation (RAG) with Multimodal Large Language Models (MLLMs) has revolutionized information retrieval and expanded the practical applications of AI. However, current systems struggle in accurately…

Computation and Language · Computer Science 2025-03-24 Dongyoung Go , Taesun Whang , Chanhee Lee , Hwa-Yeon Kim , Sunghoon Park , Seunghwan Ji , Jinho Kim , Dongchan Kim , Young-Bum Kim

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) has emerged as a powerful paradigm to enhance large language models (LLMs) by conditioning generation on external evidence retrieved at inference time. While RAG addresses critical limitations of…

Information Retrieval · Computer Science 2025-06-03 Chaitanya Sharma

Automatic evaluation of retrieval augmented generation (RAG) systems relies on fine-grained dimensions like faithfulness and relevance, as judged by expert human annotators. Meta-evaluation benchmarks support the development of automatic…

Computation and Language · Computer Science 2025-07-22 María Andrea Cruz Blandón , Jayasimha Talur , Bruno Charron , Dong Liu , Saab Mansour , Marcello Federico

Large Language Models (LLMs) have enabled a wide range of applications through their powerful capabilities in language understanding and generation. However, as LLMs are trained on static corpora, they face difficulties in addressing…

Computation and Language · Computer Science 2025-10-13 Yongjie Wang , Yue Yu , Kaisong Song , Jun Lin , Zhiqi Shen