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Retrieval-augmented generation (RAG) improves large language model reliability by grounding generated responses in external evidence. However, RAG performance depends on the relevance of retrieved passages, the quality of evidence ranking,…

Information Retrieval · Computer Science 2026-05-05 Fariba Afrin Irany , Sampson Akwafuo

Retrieval-Augmented Generation (RAG) effectively enhances Large Language Models (LLMs) by incorporating retrieved external knowledge into the generation process. Reasoning models improve LLM performance in multi-hop QA tasks, which require…

Computation and Language · Computer Science 2026-01-21 Guo Chen , Junjie Huang , Huaijin Xie , Fei Sun , Tao Jia

Evaluating Retrieval-Augmented Generation (RAG) systems remains a challenging task: existing metrics often collapse heterogeneous behaviors into single scores and provide little insight into whether errors arise from retrieval,reasoning, or…

Computation and Language · Computer Science 2026-01-09 Keerthana Murugaraj , Salima Lamsiyah , Martin Theobald

Retrieval-Augmented Generation (RAG) aims to generate more reliable and accurate responses, by augmenting large language models (LLMs) with the external vast and dynamic knowledge. Most previous work focuses on using RAG for single-round…

Artificial Intelligence · Computer Science 2024-03-28 Linhao Ye , Zhikai Lei , Jianghao Yin , Qin Chen , Jie Zhou , Liang He

Retrieval-augmented generation (RAG) grounds large language models with external evidence, but under a limited context budget, the key challenge is deciding which retrieved passages should be injected. We show that retrieval relevance…

Computation and Language · Computer Science 2026-01-27 Zhipeng Song , Yizhi Zhou , Xiangyu Kong , Jiulong Jiao , Xinrui Bao , Xu You , Xueqing Shi , Yuhang Zhou , Heng Qi

Retrieval-Augmented Generation (RAG) systems remain brittle under realistic retrieval noise, even when the required evidence appears in the top-K results. A key reason is that retrievers and rerankers optimize solely for relevance, often…

Retrieval-Augmented Generation (RAG) has advanced open-domain question answering by incorporating external information into model reasoning. However, effectively leveraging external information to enhance reasoning presents the following…

Most conventional Retrieval-Augmented Generation (RAG) pipelines rely on relevance-based retrieval, which often misaligns with utility -- that is, whether the retrieved passages actually improve the quality of the generated text specific to…

Information Retrieval · Computer Science 2026-01-28 Manish Chandra , Debasis Ganguly , Iadh Ounis

Retrieval Augmented Generation (RAG) works as a backbone for interacting with an enterprise's own data via Conversational Question Answering (ConvQA). In a RAG system, a retriever fetches passages from a collection in response to a…

Computation and Language · Computer Science 2024-12-24 Rishiraj Saha Roy , Joel Schlotthauer , Chris Hinze , Andreas Foltyn , Luzian Hahn , Fabian Kuech

Retriever-augmented generation (RAG) has become a widely adopted approach for enhancing the factual accuracy of large language models (LLMs). While current benchmarks evaluate the performance of RAG methods from various perspectives, they…

Information Retrieval · Computer Science 2025-04-08 Kepu Zhang , Zhongxiang Sun , Weijie Yu , Xiaoxue Zang , Kai Zheng , Yang Song , Han Li , Jun Xu

Retrieval-Augmented Generation (RAG) extends large language models (LLMs) beyond parametric knowledge, yet it is unclear when iterative retrieval-reasoning loops meaningfully outperform static RAG, particularly in scientific domains with…

Computation and Language · Computer Science 2026-05-05 Mahdi Astaraki , Mohammad Arshi Saloot , Ali Shiraee Kasmaee , Hamidreza Mahyar , Soheila Samiee

Retrieval-augmented generation (RAG) has emerged as a pivotal method for expanding the knowledge of large language models. To handle complex queries more effectively, researchers developed Adaptive-RAG (A-RAG) to enhance the generated…

Artificial Intelligence · Computer Science 2025-05-27 Jie Ou , Jinyu Guo , Shuaihong Jiang , Zhaokun Wang , Libo Qin , Shunyu Yao , Wenhong Tian

Retrieval-Augmented Generation (RAG) grounds language models in factual evidence but introduces critical challenges regarding knowledge conflicts between internalized parameters and retrieved information. However, existing reliability…

Information Retrieval · Computer Science 2026-04-24 Sunguk Shin , Meeyoung Cha , Byung-Jun Lee , Sungwon Park

Iterative Retrieval-Augmented Generation (iRAG) has emerged as a powerful paradigm for answering complex multi-hop questions by progressively retrieving and reasoning over external documents. However, current systems predominantly operate…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Peiyang Liu , Ziqiang Cui , Xi Wang , Di Liang , Wei Ye

Retrieval-augmented generation (RAG) enhances large language models by incorporating context retrieved from external knowledge sources. While the effectiveness of the retrieval module is typically evaluated with relevance-based ranking…

Information Retrieval · Computer Science 2026-01-13 Jia-Huei Ju , Suzan Verberne , Maarten de Rijke , Andrew Yates

Retrieval-augmented generation (RAG) remains brittle on multi-step questions and heterogeneous evidence sources, trading accuracy against latency and token/tool budgets. This paper introduces RELOOP, a structure aware framework using…

Computation and Language · Computer Science 2026-04-24 Ruiyi Yang , Hao Xue , Imran Razzak , Hakim Hacid , Flora D. Salim

Retrieval-augmented reasoning (RAR) is a recent evolution of retrieval-augmented generation (RAG) that employs multiple reasoning steps for retrieval and generation. While effective for some complex queries, RAR remains vulnerable to errors…

Information Retrieval · Computer Science 2026-05-28 Heydar Soudani , Hamed Zamani , Faegheh Hasibi

Retrieval-Augmented Generation (RAG) grounds Large Language Models (LLMs) in external knowledge but often suffers from flat context representations and stateless retrieval, leading to unstable performance. We propose Stateful…

Computation and Language · Computer Science 2026-04-17 Qi Dong , Ziheng Lin , Ning Ding

In factual question answering, many errors are not failures of access but failures of commitment: the system retrieves relevant evidence, yet still settles on the wrong answer. We present CounterRefine, a lightweight repair layer for…

Computation and Language · Computer Science 2026-05-19 Tianyi Huang , Ying Kai Deng

Retrieval-Augmented Generation (RAG) has emerged as a foundational paradigm for grounding large language models in external knowledge. While adaptive retrieval mechanisms have improved retrieval efficiency, existing approaches treat…

Computation and Language · Computer Science 2026-04-20 Kai Wei , Raymond Li , Xi Zhu , Zhaoqian Xue , Jiaojiao Han , Jingcheng Niu , Fan Yang