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Hallucinations in large language models (LLMs) - instances where models generate plausible but factually incorrect information - present a significant challenge for AI. We introduce "Ask a Local", a novel hallucination detection method…

计算与语言 · 计算机科学 2025-06-05 Aldan Creo , Héctor Cerezo-Costas , Pedro Alonso-Doval , Maximiliano Hormazábal-Lagos

Large Language Models (LLMs) have succeeded in a variety of natural language processing tasks [Zha+25]. However, they have notable limitations. LLMs tend to generate hallucinations, a seemingly plausible yet factually unsupported output…

计算与语言 · 计算机科学 2025-09-19 Martin Preiß

Despite achieving rapid developments and with widespread applications, Large Vision-Language Models (LVLMs) confront a serious challenge of being prone to generating hallucinations. An over-reliance on linguistic priors has been identified…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Lanyun Zhu , Deyi Ji , Tianrun Chen , Peng Xu , Jieping Ye , Jun Liu

Diffusion models recently have been successfully applied for the visual synthesis of strikingly realistic appearing images. This raises strong concerns about their potential for malicious purposes. In this paper, we propose using the…

计算机视觉与模式识别 · 计算机科学 2023-09-29 Peter Lorenz , Ricard Durall , Janis Keuper

Recently, 3D-LLMs, which combine point-cloud encoders with large models, have been proposed to tackle complex tasks in embodied intelligence and scene understanding. In addition to showing promising results on 3D tasks, we found that they…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Ruiying Peng , Kaiyuan Li , Weichen Zhang , Chen Gao , Xinlei Chen , Yong Li

Large Language Models often generate factually incorrect but plausible outputs, known as hallucinations. We identify a more insidious phenomenon, LLM delusion, defined as high belief hallucinations, incorrect outputs with abnormally high…

计算与语言 · 计算机科学 2025-03-11 Hongshen Xu , Zixv yang , Zichen Zhu , Kunyao Lan , Zihan Wang , Mengyue Wu , Ziwei Ji , Lu Chen , Pascale Fung , Kai Yu

The detection of sophisticated hallucinations in Large Language Models (LLMs) is hampered by a ``Detection Dilemma'': methods probing internal states (Internal State Probing) excel at identifying factual inconsistencies but fail on logical…

计算与语言 · 计算机科学 2026-01-09 Yusheng Song , Lirong Qiu , Xi Zhang , Zhihao Tang

Although Large Vision-Language Models (LVLMs) have made substantial progress, hallucination, where generated text is not grounded in the visual input, remains a challenge. As LVLMs become stronger, previously reported hallucination…

计算机视觉与模式识别 · 计算机科学 2026-03-03 April Fu

Benchmarks measure whether a model is correct. They do not measure whether a model is reliable. This distinction is largely academic for single-shot inference, but becomes critical for agentic AI systems, where a single rephrased prompt can…

机器学习 · 计算机科学 2026-01-13 Aaron R. Flouro , Shawn P. Chadwick

Hallucinations are an inescapable consequence of solving inverse problems with deep neural networks. The expressiveness of recent generative models is the reason why they can yield results far superior to conventional regularizers; it can…

天体物理仪器与方法 · 物理学 2023-06-26 Matt L. Sampson , Peter Melchior

In this paper we address the problem of hallucinating high-resolution facial images from unaligned low-resolution inputs at high magnification factors. We approach the problem with convolutional neural networks (CNNs) and propose a novel…

计算机视觉与模式识别 · 计算机科学 2019-02-12 Klemen Grm , Simon Dobrišek , Walter J. Scheirer , Vitomir Štruc

Large Visual Language Models (LVLMs) integrate visual and linguistic modalities, exhibiting exceptional performance across various multimodal tasks. Nevertheless, LVLMs remain vulnerable to the issue of object hallucinations. Previous…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Chao Wang , Xuancheng Zhou , Weiwei Fu , Yang Zhou

Diffusion models, while increasingly adept at generating realistic images, are notably hindered by hallucinations -- unrealistic or incorrect features inconsistent with the trained data distribution. In this work, we propose Adaptive…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Trevine Oorloff , Yaser Yacoob , Abhinav Shrivastava

We report the first systematic evidence of hallucination in AI models of fluid dynamics, demonstrated in the canonical problem of hydrodynamically unstable transport known as viscous fingering. AI-based modeling of flow with instabilities…

流体动力学 · 物理学 2026-04-23 Ramdhan Wibawa , Birendra Jha

Large Vision-Language Models (VLMs) have achieved remarkable success across diverse multimodal tasks but remain vulnerable to hallucinations rooted in inherent language bias. Despite recent progress, existing hallucination mitigation…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Yilin Yang , Zhenghui Guo , Yuke Wang , Omprakash Gnawali , Sheng Di , Chengming Zhang

Vision Language models (VLMs) often hallucinate non-existent objects. Detecting hallucination is analogous to detecting deception: a single final statement is insufficient, one must examine the underlying reasoning process. Yet existing…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Abin Shoby , Ta Duc Huy , Tuan Dung Nguyen , Minh Khoi Ho , Qi Chen , Anton van den Hengel , Phi Le Nguyen , Johan W. Verjans , Vu Minh Hieu Phan

Large language models (LLMs) frequently hallucinate and produce factual errors, yet our understanding of why they make these errors remains limited. In this study, we delve into the underlying mechanisms of LLM hallucinations from the…

计算与语言 · 计算机科学 2024-03-13 Shiqi Chen , Miao Xiong , Junteng Liu , Zhengxuan Wu , Teng Xiao , Siyang Gao , Junxian He

Multimodal Large Language Models (MLLMs) have demonstrated remarkable capabilities in vision-language understanding tasks. While these models often produce linguistically coherent output, they often suffer from hallucinations, generating…

计算与语言 · 计算机科学 2025-12-09 Sujoy Nath , Arkaprabha Basu , Sharanya Dasgupta , Swagatam Das

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…

计算与语言 · 计算机科学 2025-02-20 Peiran Wang , Yang Liu , Yunfei Lu , Jue Hong , Ye Wu

Large Language Models (LLMs) are increasingly deployed in safety-critical domains, yet remain susceptible to hallucinations. While prior works have proposed confidence representation methods for hallucination detection, most of these…

机器学习 · 计算机科学 2025-11-17 Elyes Hajji , Aymen Bouguerra , Fabio Arnez