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Large language models (LLMs) have transformed various sectors, including education, finance, and medicine, by enhancing content generation and decision-making processes. However, their integration into the medical field is cautious due to…

Information Retrieval · Computer Science 2025-04-15 Yifan Feng , Hao Hu , Xingliang Hou , Shiquan Liu , Shihui Ying , Shaoyi Du , Han Hu , Yue Gao

In this work, we propose sequence-level certainty as a common theme over hallucination in Knowledge Grounded Dialogue Generation (KGDG). We explore the correlation between the level of hallucination in model responses and two types of…

Computation and Language · Computer Science 2024-04-16 Yixin Wan , Fanyou Wu , Weijie Xu , Srinivasan H. Sengamedu

Retrieval-Augmented Generation (RAG) significantly improves the factuality of Large Language Models (LLMs), yet standard pipelines often lack mechanisms to verify inter- mediate reasoning, leaving them vulnerable to hallucinations in…

Computation and Language · Computer Science 2026-03-12 Eeham Khan , Luis Rodriguez , Marc Queudot

Retrieval-augmented generation (RAG) frameworks enable large language models (LLMs) to retrieve relevant information from a knowledge base and incorporate it into the context for generating responses. This mitigates hallucinations and…

Computation and Language · Computer Science 2024-04-09 Pouria Rouzrokh , Shahriar Faghani , Cooper U. Gamble , Moein Shariatnia , Bradley J. Erickson

Retrieval-augmented generation (RAG) has shown impressive capabilities in mitigating hallucinations in large language models (LLMs). However, LLMs struggle to maintain consistent reasoning when exposed to misleading or conflicting evidence,…

Artificial Intelligence · Computer Science 2026-01-21 Linda Zeng , Rithwik Gupta , Divij Motwani , Yi Zhang , Diji Yang

Discharge summaries require extracting critical information from lengthy electronic health records (EHRs), a process that is labor-intensive when performed manually. Large language models (LLMs) can improve generation efficiency; however,…

Computation and Language · Computer Science 2026-05-06 Severin Ye , Xiao Kong , Xiaopeng He , Guangsu Yan , Dongsuk Oh

Hallucinations are a common issue that undermine the reliability of large language models (LLMs). Recent studies have identified a specific subset of hallucinations, known as confabulations, which arise due to predictive uncertainty of…

Machine Learning · Computer Science 2025-10-24 Mykyta Ielanskyi , Kajetan Schweighofer , Lukas Aichberger , Sepp Hochreiter

Retrieval-augmented generation (RAG) appears as a promising method to alleviate the "hallucination" problem in large language models (LLMs), since it can incorporate external traceable resources for response generation. The essence of RAG…

Computation and Language · Computer Science 2024-10-16 Haosheng Qian , Yixing Fan , Ruqing Zhang , Jiafeng Guo

We present UncertaintyRAG, a novel approach for long-context Retrieval-Augmented Generation (RAG) that utilizes Signal-to-Noise Ratio (SNR)-based span uncertainty to estimate similarity between text chunks. This span uncertainty enhances…

Computation and Language · Computer Science 2024-10-04 Zixuan Li , Jing Xiong , Fanghua Ye , Chuanyang Zheng , Xun Wu , Jianqiao Lu , Zhongwei Wan , Xiaodan Liang , Chengming Li , Zhenan Sun , Lingpeng Kong , Ngai Wong

Vision-Language Models (VLMs) have significantly advanced automated Radiology Report Generation (RRG). However, existing methods implicitly assume high-quality inputs, overlooking the noise and artifacts prevalent in real-world clinical…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Hongze Zhu , Chen Hu , Jiaxuan Jiang , Hong Liu , Yawen Huang , Ming Hu , Tianyu Wang , Zhijian Wu , Yefeng Zheng

Radiology Report Generation (RRG) draws attention as a vision-and-language interaction of biomedical fields. Previous works inherited the ideology of traditional language generation tasks, aiming to generate paragraphs with high readability…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Xiao Song , Jiafan Liu , Yun Li , Yan Liu , Wenbin Lei , Ruxin Wang

Recently, Knowledge Graphs (KGs) have been successfully coupled with Large Language Models (LLMs) to mitigate their hallucinations and enhance their reasoning capability, such as in KG-based retrieval-augmented frameworks. However, current…

Artificial Intelligence · Computer Science 2024-10-22 Bo Ni , Yu Wang , Lu Cheng , Erik Blasch , Tyler Derr

Retrieval-Augmented Generation (RAG) systems remain susceptible to hallucinations despite grounding in retrieved evidence. While current detection methods leverage embedding similarity and natural language inference (NLI), their reliability…

Machine Learning · Computer Science 2025-12-22 Debu Sinha

Retrieval-Augmented Generation (RAG) has been proposed to mitigate hallucinations in large language models (LLMs), where generated outputs may be factually incorrect. However, existing RAG approaches predominantly rely on vector similarity…

Information Retrieval · Computer Science 2026-04-28 Miao Xie , Xiao Zhang , Yi Li , Chunli Lv

The world faces a shortage of radiologists, leading to longer treatment times and increased stress, negatively impacting patient safety and workforce morale. Integrating artificial intelligence to interpret radiographic images and generate…

Image and Video Processing · Electrical Eng. & Systems 2024-06-19 Marijn Borghouts

Generating accurate radiology reports from medical images is a clinically important but challenging task. While current Vision Language Models (VLMs) show promise, they are prone to generating hallucinations, potentially compromising…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Serena Zhang , Sraavya Sambara , Oishi Banerjee , Julian Acosta , L. John Fahrner , Pranav Rajpurkar

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

Large Language Models (LLMs) are widely used in critical fields such as healthcare, education, and finance due to their remarkable proficiency in various language-related tasks. However, LLMs are prone to generating factually incorrect…

Computation and Language · Computer Science 2023-11-27 Muneeswaran I , Shreya Saxena , Siva Prasad , M V Sai Prakash , Advaith Shankar , Varun V , Vishal Vaddina , Saisubramaniam Gopalakrishnan

Hallucinations, defined as instances where Large Language Models (LLMs) generate false or misleading content, pose a significant challenge that impacts the safety and trust of downstream applications. We introduce UQLM, a Python package for…

Computation and Language · Computer Science 2026-03-05 Dylan Bouchard , Mohit Singh Chauhan , David Skarbrevik , Ho-Kyeong Ra , Viren Bajaj , Zeya Ahmad

Retrieval-Augmented Generation (RAG) has emerged as a crucial approach for enhancing the responses of large language models (LLMs) with external knowledge sources. Despite the impressive performance in complex question-answering tasks, RAG…

Information Retrieval · Computer Science 2025-10-14 Haosheng Qian , Yixing Fan , Jiafeng Guo , Ruqing Zhang , Qi Chen , Dawei Yin , Xueqi Cheng