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Large Vision-Language Models (LVLMs) have recently achieved remarkable success. However, LVLMs are still plagued by the hallucination problem, which limits the practicality in many scenarios. Hallucination refers to the information of…

Machine Learning · Computer Science 2023-10-11 Junyang Wang , Yiyang Zhou , Guohai Xu , Pengcheng Shi , Chenlin Zhao , Haiyang Xu , Qinghao Ye , Ming Yan , Ji Zhang , Jihua Zhu , Jitao Sang , Haoyu Tang

Hallucinations in large language models (LLMs) pose significant safety concerns that impede their broader deployment. Recent research in hallucination detection has demonstrated that LLMs' internal representations contain truthfulness…

Machine Learning · Computer Science 2025-11-11 Mengjia Niu , Hamed Haddadi , Guansong Pang

A common approach to hallucination detection casts it as a natural language inference (NLI) task, often using LLMs to classify whether the generated text is entailed by corresponding reference texts. Since entailment classification is a…

Computation and Language · Computer Science 2025-06-06 Ron Eliav , Arie Cattan , Eran Hirsch , Shahaf Bassan , Elias Stengel-Eskin , Mohit Bansal , Ido Dagan

Large Vision-Language Models (LVLMs) have achieved impressive progress in multimodal reasoning, yet they remain prone to object hallucinations, generating descriptions of objects that are not present in the input image. Recent approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Sohyeon Kim , Sang Yeon Yoon , Kyeongbo Kong

Large Vision-Language Models (LVLMs) have achieved impressive performance in multimodal tasks, but they still suffer from hallucinations, i.e., generating content that is grammatically accurate but inconsistent with visual inputs. In this…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Chenxi Li , Yichen Guo , Benfang Qian , Jinhao You , Kai Tang , Yaosong Du , Zonghao Zhang , Xiande Huang

Large Language Models (LLMs) often hallucinate, generating nonsensical or false information that can be especially harmful in sensitive fields such as medicine or law. To study this phenomenon systematically, we introduce FalseCite, a…

Computation and Language · Computer Science 2026-02-13 Nathan Mao , Varun Kaushik , Shreya Shivkumar , Parham Sharafoleslami , Kevin Zhu , Sunishchal Dev

With the large-scale adoption of Large Language Models (LLMs) in various applications, there is a growing reliability concern due to their tendency to generate inaccurate text, i.e. hallucinations. In this work, we propose Cross-Layer…

Computation and Language · Computer Science 2025-09-15 Malavika Suresh , Rahaf Aljundi , Ikechukwu Nkisi-Orji , Nirmalie Wiratunga

Large Language Models (LLMs) demonstrate impressive capabilities in natural language processing but suffer from inaccuracies and logical inconsistencies known as hallucinations. This compromises their reliability, especially in domains…

Artificial Intelligence · Computer Science 2025-12-08 Ruslan Idelfonso Magana Vsevolodovna , Marco Monti

Large Language Models (LLMs) and Large Reasoning Models (LRMs) offer transformative potential for high-stakes domains like finance and law, but their tendency to hallucinate, generating factually incorrect or unsupported content, poses a…

Artificial Intelligence · Computer Science 2026-01-16 Ahmad Pesaranghader , Erin Li

Hallucinations in Large Language Models (LLMs) pose a significant challenge, generating misleading or unverifiable content that undermines trust and reliability. Existing evaluation methods, such as KnowHalu, employ multi-stage verification…

Computation and Language · Computer Science 2026-04-10 Chenggong Zhang , Haopeng Wang , Hexi Meng

Large language models(LLMs) excel at text generation and knowledge question-answering tasks, but they are prone to generating hallucinated content, severely limiting their application in high-risk domains. Current hallucination detection…

Computation and Language · Computer Science 2025-12-25 Shize Liang , Hongzhi Wang

Large Language Models (LLMs) have shown their ability to collaborate effectively with humans in real-world scenarios. However, LLMs are apt to generate hallucinations, i.e., makeup incorrect text and unverified information, which can cause…

Computation and Language · Computer Science 2023-10-25 Shiping Yang , Renliang Sun , Xiaojun Wan

Large Language Models (LLMs) suffer from hallucination problems, which hinder their reliability in sensitive applications. In the black-box setting, several self-consistency-based techniques have been proposed for hallucination detection.…

Computation and Language · Computer Science 2025-02-25 Yihao Xue , Kristjan Greenewald , Youssef Mroueh , Baharan Mirzasoleiman

Hallucination, posed as a pervasive challenge of multi-modal large language models (MLLMs), has significantly impeded their real-world usage that demands precise judgment. Existing methods mitigate this issue with either training with…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Qidong Huang , Xiaoyi Dong , Pan Zhang , Bin Wang , Conghui He , Jiaqi Wang , Dahua Lin , Weiming Zhang , Nenghai Yu

Large language model (LLM) systems suffer from the models' unstable ability to generate valid and factual content, resulting in hallucination generation. Current hallucination detection methods heavily rely on out-of-model information…

Computation and Language · Computer Science 2025-02-20 Peiran Wang , Yang Liu , Yunfei Lu , Jue Hong , Ye Wu

Existing Large Vision-Language Models (LVLMs) primarily align image features of vision encoder with Large Language Models (LLMs) to leverage their superior text generation capabilities. However, the scale disparity between vision encoder…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Shi Liu , Kecheng Zheng , Wei Chen

Recent advancements in massively multilingual machine translation systems have significantly enhanced translation accuracy; however, even the best performing systems still generate hallucinations, severely impacting user trust. Detecting…

Computation and Language · Computer Science 2024-10-22 Kenza Benkirane , Laura Gongas , Shahar Pelles , Naomi Fuchs , Joshua Darmon , Pontus Stenetorp , David Ifeoluwa Adelani , Eduardo Sánchez

The performance of deep learning-based natural language processing systems is based on large amounts of labeled training data which, in the clinical domain, are not easily available or affordable. Weak supervision and in-context learning…

Computation and Language · Computer Science 2025-04-02 Enshuo Hsu , Kirk Roberts

Large Language Models (LLMs) are known to hallucinate, whereby they generate plausible but inaccurate text. This phenomenon poses significant risks in critical applications, such as medicine or law, necessitating robust hallucination…

Computation and Language · Computer Science 2024-10-23 Benedict Aaron Tjandra , Muhammed Razzak , Jannik Kossen , Kunal Handa , Yarin Gal

Large Language Models have demonstrated remarkable capabilities across diverse tasks, yet they frequently generate hallucinations outputs that are fluent but factually incorrect or unsupported. We propose Counterfactual Probing, a novel…

Computation and Language · Computer Science 2025-08-05 Yijun Feng