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Retrieval-augmented generation (RAG) has emerged as a leading approach to reducing hallucinations in large language models (LLMs). Current RAG evaluation benchmarks primarily focus on what we call local RAG: retrieving relevant chunks from…

Computation and Language · Computer Science 2025-11-05 Qi Luo , Xiaonan Li , Tingshuo Fan , Xinchi Chen , Xipeng Qiu

Document retrieval systems have experienced a revitalized interest with the advent of retrieval-augmented generation (RAG). RAG architecture offers a lower hallucination rate than LLM-only applications. However, the accuracy of the…

Information Retrieval · Computer Science 2024-08-21 Kavsar Huseynova , Jafar Isbarov

Retrieval-augmented generation (RAG) is a paradigm that augments large language models (LLMs) with external knowledge to tackle knowledge-intensive question answering. While several benchmarks evaluate Multimodal LLMs (MLLMs) under…

Computation and Language · Computer Science 2025-08-18 Yin Wu , Quanyu Long , Jing Li , Jianfei Yu , Wenya Wang

Retrieval-augmented generation (RAG) with large language models (LLMs) plays a crucial role in question answering, as LLMs possess limited knowledge and are not updated with continuously growing information. Most recent work on RAG has…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Shichao Kan , Yuhai Deng , Jiale Fu , Lihui Cen , Zhe Qu , Linna Zhang , Yixiong Liang , Yigang Cen

Medical question-answering (QA) systems can benefit from advances in large language models (LLMs), but directly applying LLMs to the clinical domain poses challenges such as maintaining factual accuracy and avoiding hallucinations. In this…

Computation and Language · Computer Science 2025-12-08 Tasnimul Hassan , Md Faisal Karim , Haziq Jeelani , Elham Behnam , Robert Green , Fayeq Jeelani Syed

Vision Language Models (VLMs) exhibit persistent hallucinations in counting tasks, with accuracy substantially lower than other visual reasoning tasks (excluding sentiment). This phenomenon persists even in state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Boyuan Chen , Minghao Shao , Siddharth Garg , Ramesh Karri , Muhammad Shafique

Multimodal large language models (MLLMs), such as GPT-4o, Gemini, LLaVA, and Flamingo, have made significant progress in integrating visual and textual modalities, excelling in tasks like visual question answering (VQA), image captioning,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Junxiao Xue , Quan Deng , Fei Yu , Yanhao Wang , Jun Wang , Yuehua Li

Visual retrieval-augmented generation (VRAG) augments vision-language models (VLMs) with external visual knowledge to ground reasoning and reduce hallucinations. Yet current VRAG systems often fail to reliably perceive and integrate…

Computation and Language · Computer Science 2025-10-14 Yubo Sun , Chunyi Peng , Yukun Yan , Shi Yu , Zhenghao Liu , Chi Chen , Zhiyuan Liu , Maosong Sun

This research analyzed and compared the multi-modal approach in the Vision Transformer(EVA-ViT) based image encoder with the LlaMA or ChatGPT LLM to reduce the hallucination problem and detect diseases in chest x-ray images. In this…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Alexander Shim , Khalil Saieh , Samuel Clarke

Vision-language retrieval-augmented generation (RAG) has become an effective approach for tackling Knowledge-Based Visual Question Answering (KB-VQA), which requires external knowledge beyond the visual content presented in images. The…

Information Retrieval · Computer Science 2025-09-15 Wei Yang , Jingjing Fu , Rui Wang , Jinyu Wang , Lei Song , Jiang Bian

Retrieval-augmented generation (RAG) is a framework enabling large language models (LLMs) to enhance their accuracy and reduce hallucinations by integrating external knowledge bases. In this paper, we introduce a hybrid RAG system enhanced…

Computation and Language · Computer Science 2024-09-04 Ye Yuan , Chengwu Liu , Jingyang Yuan , Gongbo Sun , Siqi Li , Ming Zhang

Accurate and reliable knowledge retrieval is vital for financial question-answering, where continually updated data sources and complex, high-stakes contexts demand precision. Traditional retrieval systems rely on a single database and…

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

Vision-Language Models (VLMs) excel at visual reasoning but still struggle with integrating external knowledge. Retrieval-Augmented Generation (RAG) is a promising solution, but current methods remain inefficient and often fail to maintain…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Gen Li , Peiyu Liu

Retrieval-augmented generation (RAG) improves large language models (LLMs) by using external knowledge to guide response generation, reducing hallucinations. However, RAG, particularly multi-modal RAG, can introduce new hallucination…

Machine Learning · Computer Science 2025-01-08 Matin Mortaheb , Mohammad A. Amir Khojastepour , Srimat T. Chakradhar , Sennur Ulukus

Vision-language models (VLMs) frequently generate hallucinated content plausible but incorrect claims about image content. We propose a training-free self-correction framework enabling VLMs to iteratively refine responses through…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Kassoum Sanogo , Renzo Ardiccioni

Retrieval-Augmented Generation (RAG) mitigates hallucination in Large Language Models (LLMs) by incorporating external data, with Knowledge Graphs (KGs) offering crucial information for question answering. Traditional Knowledge Graph…

Computation and Language · Computer Science 2025-09-08 Yushi Sun , Kai Sun , Yifan Ethan Xu , Xiao Yang , Xin Luna Dong , Nan Tang , Lei Chen

Large language models (LLMs) have shown impressive abilities in answering questions across various domains, but they often encounter hallucination issues on questions that require professional and up-to-date knowledge. To address this…

Computation and Language · Computer Science 2025-03-03 Hansi Yang , Qi Zhang , Wei Jiang , Jianguo Li

We proposed an end-to-end system design towards utilizing Retrieval Augmented Generation (RAG) to improve the factual accuracy of Large Language Models (LLMs) for domain-specific and time-sensitive queries related to private…

Computation and Language · Computer Science 2024-03-18 Jiarui Li , Ye Yuan , Zehua Zhang

Manual annotation of high-quality visual question answering with grounding (VQA-G) datasets, which pair visual questions with evidential grounding, is crucial for advancing vision-language models (VLMs), but remains unscalable. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Rongsheng Hu , Runwei Guan , Yicheng Di , Jiayu Bao , Yuan Liu