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Hallucinations are a persistent problem with Large Language Models (LLMs). As these models become increasingly used in high-stakes domains, such as healthcare and finance, the need for effective hallucination detection is crucial. To this…

Computation and Language · Computer Science 2026-01-29 Dylan Bouchard , Mohit Singh Chauhan

Large Vision-Language Models (LVLMs) suffer from hallucination issues, wherein the models generate plausible-sounding but factually incorrect outputs, undermining their reliability. A comprehensive quantitative evaluation is necessary to…

Computation and Language · Computer Science 2024-10-07 Haoyi Qiu , Wenbo Hu , Zi-Yi Dou , Nanyun Peng

Medical Large Language Models (MLLMs) play a crucial role in ophthalmic diagnosis, holding significant potential to address vision-threatening diseases. However, their accuracy is constrained by hallucinations stemming from limited…

Computation and Language · Computer Science 2025-10-02 Xiaoyu Pan , Yang Bai , Ke Zou , Yang Zhou , Jun Zhou , Huazhu Fu , Yih-Chung Tham , Yong Liu

Hallucination plagues even frontier LLMs--but how bad is it really for summarizing academic papers? We evaluate Factored Verification, a simple automated method for detecting hallucinations in abstractive summaries. This method sets a new…

Computation and Language · Computer Science 2023-10-17 Charlie George , Andreas Stuhlmüller

While Large Language Models have transformed how we interact with AI systems, they suffer from a critical flaw: they confidently generate false information that sounds entirely plausible. This hallucination problem has become a major…

Artificial Intelligence · Computer Science 2025-10-28 Piyushkumar Patel

Large language models (LLMs) have achieved expert-level performance on standardized examinations, yet multiple-choice accuracy poorly reflects real-world clinical utility and safety. As patients and clinicians increasingly use LLMs for…

Large language models (LLMs) have achieved significant success in interacting with human. However, recent studies have revealed that these models often suffer from hallucinations, leading to overly confident but incorrect judgments. This…

Computation and Language · Computer Science 2023-09-06 Yusheng Liao , Yutong Meng , Hongcheng Liu , Yanfeng Wang , Yu Wang

In the era of large language models (LLMs), hallucination (i.e., the tendency to generate factually incorrect content) poses great challenge to trustworthy and reliable deployment of LLMs in real-world applications. To tackle the LLM…

Computation and Language · Computer Science 2024-01-09 Junyi Li , Jie Chen , Ruiyang Ren , Xiaoxue Cheng , Wayne Xin Zhao , Jian-Yun Nie , Ji-Rong Wen

Hallucinations pose a significant challenge for large language models when answering knowledge-intensive queries. As LLMs become more widely adopted, it is crucial not only to detect if hallucinations occur but also to pinpoint exactly…

Computation and Language · Computer Science 2025-05-07 Sicong Huang , Jincheng He , Shiyuan Huang , Karthik Raja Anandan , Arkajyoti Chakraborty , Ian Lane

Automating the classification of negative treatment in legal precedent is a critical yet nuanced NLP task where misclassification carries significant risk. To address the shortcomings of standard accuracy, this paper introduces a more…

Computation and Language · Computer Science 2026-05-19 M. Mikail Demir , M. Abdullah Canbaz

As large language models (LLMs) are increasingly deployed in multi-turn dialogue and other sustained interactive scenarios, it is essential to understand how extended context affects their performance. Popular benchmarks, focusing primarily…

Computation and Language · Computer Science 2025-06-03 Robert Hankache , Kingsley Nketia Acheampong , Liang Song , Marek Brynda , Raad Khraishi , Greig A. Cowan

Retrieval-augmented generation (RAG) has become a main technique for alleviating hallucinations in large language models (LLMs). Despite the integration of RAG, LLMs may still present unsupported or contradictory claims to the retrieved…

Computation and Language · Computer Science 2024-05-20 Cheng Niu , Yuanhao Wu , Juno Zhu , Siliang Xu , Kashun Shum , Randy Zhong , Juntong Song , Tong Zhang

Recent work has demonstrated state-of-the-art results in large language model (LLM) hallucination detection and mitigation through consistency-based approaches which involve aggregating multiple responses sampled from a single LLM for a…

Machine Learning · Computer Science 2025-10-24 Demian Till , John Smeaton , Peter Haubrick , Gouse Saheb , Florian Graef , David Berman

Large Language Models (LLMs) are being rapidly adopted in agricultural imaging applications, ranging from crop interpretation to synthetic field image generation. However, these models frequently exhibit hallucinations outputs that appear…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Partho Ghose , Al Bashir , Prem Raj , Azlan Zahid

The rapidly developing Large Vision Language Models (LVLMs) have shown notable capabilities on a range of multi-modal tasks, but still face the hallucination phenomena where the generated texts do not align with the given contexts,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Wenyi Xiao , Ziwei Huang , Leilei Gan , Wanggui He , Haoyuan Li , Zhelun Yu , Fangxun Shu , Hao Jiang , Linchao Zhu

Large language models (LLMs) are increasingly being adopted as the cognitive core of embodied agents. However, inherited hallucinations, which stem from failures to ground user instructions in the observed physical environment, can lead to…

We introduce HallusionBench, a comprehensive benchmark designed for the evaluation of image-context reasoning. This benchmark presents significant challenges to advanced large visual-language models (LVLMs), such as GPT-4V(Vision), Gemini…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Tianrui Guan , Fuxiao Liu , Xiyang Wu , Ruiqi Xian , Zongxia Li , Xiaoyu Liu , Xijun Wang , Lichang Chen , Furong Huang , Yaser Yacoob , Dinesh Manocha , Tianyi Zhou

Large language models (LLMs) show promise in healthcare, but hallucinations remain a major barrier to clinical use. We present CHECK, a continuous-learning framework that integrates structured clinical databases with a classifier grounded…

Benchmarks underpin how progress in large language models (LLMs) is measured and trusted. Yet our analyses reveal that apparent convergence in benchmark accuracy can conceal deep epistemic divergence. Using two major reasoning benchmarks -…

Computation and Language · Computer Science 2026-02-13 Eddie Yang , Dashun Wang

Hallucinations are outputs by Large Language Models (LLMs) that are factually incorrect yet appear plausible [1]. This paper investigates how such hallucinations influence users' trust in LLMs and users' interaction with LLMs. To explore…

Artificial Intelligence · Computer Science 2025-12-11 Adrian Ryser , Florian Allwein , Tim Schlippe