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相关论文: Counting Hallucinations in Diffusion Models

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Colloquially speaking, image generation models based upon diffusion processes are frequently said to exhibit "hallucinations," samples that could never occur in the training data. But where do such hallucinations come from? In this paper,…

机器学习 · 计算机科学 2024-08-27 Sumukh K Aithal , Pratyush Maini , Zachary C. Lipton , J. Zico Kolter

While Large Language Models (LLMs) have emerged as powerful foundational models to solve a variety of tasks, they have also been shown to be prone to hallucinations, i.e., generating responses that sound confident but are actually incorrect…

计算与语言 · 计算机科学 2026-04-29 Jiawei Li , Akshayaa Magesh , Venugopal V. Veeravalli

Large-scale vision-language models have demonstrated impressive skill in handling tasks that involve both areas. Nevertheless, these models frequently experience significant issues with generating inaccurate information, which is…

计算与语言 · 计算机科学 2024-05-07 Huixuan Zhang , Junzhe Zhang , Xiaojun Wan

Hallucinations are spurious structures not present in the ground truth, posing a critical challenge in medical image reconstruction, especially for data-driven conditional models. We hypothesize that combining an unconditional diffusion…

图像与视频处理 · 电气工程与系统科学 2025-07-25 Seunghoi Kim , Henry F. J. Tregidgo , Matteo Figini , Chen Jin , Sarang Joshi , Daniel C. Alexander

Generative image reconstruction algorithms such as measurement conditioned diffusion models are increasingly popular in the field of medical imaging. These powerful models can transform low signal-to-noise ratio (SNR) inputs into outputs…

医学物理 · 物理学 2024-07-18 Matthew Tivnan , Siyeop Yoon , Zhennong Chen , Xiang Li , Dufan Wu , Quanzheng Li

Generative models are prone to hallucinations: plausible but incorrect structures absent in the ground truth. This issue is problematic in image restoration for safety-critical domains such as medical imaging, industrial inspection, and…

计算机视觉与模式识别 · 计算机科学 2025-12-04 Seunghoi Kim , Henry F. J. Tregidgo , Chen Jin , Matteo Figini , Daniel C. Alexander

Diffusion models, despite their impressive demos, often produce hallucinatory samples with structural inconsistencies that lie outside of the support of the true data distribution. Such hallucinations can be attributed to excessive…

计算机视觉与模式识别 · 计算机科学 2025-10-08 Kostas Triaridis , Alexandros Graikos , Aggelina Chatziagapi , Grigorios G. Chrysos , Dimitris Samaras

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

Text-to-image generation has shown remarkable progress with the emergence of diffusion models. However, these models often generate factually inconsistent images, failing to accurately reflect the factual information and common sense…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Youngsun Lim , Hyunjung Shim

In recent studies, the extensive utilization of large language models has underscored the importance of robust evaluation methodologies for assessing text generation quality and relevance to specific tasks. This has revealed a prevalent…

计算与语言 · 计算机科学 2024-03-20 Patanjali Bhamidipati , Advaith Malladi , Manish Shrivastava , Radhika Mamidi

Score-based diffusion models have achieved incredible performance in generating realistic images, audio, and video data. While these models produce high-quality samples with impressive details, they often introduce unrealistic artifacts,…

机器学习 · 计算机科学 2025-03-06 Rui Lu , Runzhe Wang , Kaifeng Lyu , Xitai Jiang , Gao Huang , Mengdi Wang

Large Language Models (LLMs) are prone to generating plausible yet incorrect responses, known as hallucinations. Effectively detecting hallucinations is therefore crucial for the safe deployment of LLMs. Recent research has linked…

计算与语言 · 计算机科学 2026-03-03 Litian Liu , Reza Pourreza , Sunny Panchal , Apratim Bhattacharyya , Yubing Jian , Yao Qin , Roland Memisevic

While Diffusion Large Language Models (dLLMs) have emerged as a promising non-autoregressive paradigm comparable to autoregressive (AR) models, their faithfulness, specifically regarding hallucination, remains largely underexplored. To…

计算与语言 · 计算机科学 2026-04-14 Zhengnan Guo , Fei Tan

Generative super-resolution (GSR) currently sets the state-of-the-art in terms of perceptual image quality, overcoming the "regression-to-the-mean" blur of prior non-generative models. However, from a human perspective, such models do not…

计算机视觉与模式识别 · 计算机科学 2026-01-12 Weiming Ren , Raghav Goyal , Zhiming Hu , Tristan Ty Aumentado-Armstrong , Iqbal Mohomed , Alex Levinshtein

Diffusion models are prone to generating structural hallucinations - samples that match the statistical properties of the training data yet defy underlying structural rules, resulting in anomalies like hands with more than five fingers.…

计算机视觉与模式识别 · 计算机科学 2026-05-07 Bartlomiej Sobieski , Matthew Tivnan , Dawid Płudowski , Michał Jan Włodarczyk , Pengfei Jin , Przemyslaw Biecek , Quanzheng Li

Visual hallucination (VH) means that a multi-modal LLM (MLLM) imagines incorrect details about an image in visual question answering. Existing studies find VH instances only in existing image datasets, which results in biased understanding…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Wen Huang , Hongbin Liu , Minxin Guo , Neil Zhenqiang Gong

Large Language Models (LLMs) have transformed the Natural Language Processing (NLP) landscape with their remarkable ability to understand and generate human-like text. However, these models are prone to ``hallucinations'' -- outputs that do…

The popularity of automated news headline generation has surged with advancements in pre-trained language models. However, these models often suffer from the ``hallucination'' problem, where the generated headline is not fully supported by…

计算与语言 · 计算机科学 2024-07-24 Jiaming Shen , Tianqi Liu , Jialu Liu , Zhen Qin , Jay Pavagadhi , Simon Baumgartner , Michael Bendersky

With the advent of rich visual representations and pre-trained language models, video captioning has seen continuous improvement over time. Despite the performance improvement, video captioning models are prone to hallucination.…

计算机视觉与模式识别 · 计算机科学 2022-09-29 Nasib Ullah , Partha Pratim Mohanta

Hallucination in a foundation model (FM) refers to the generation of content that strays from factual reality or includes fabricated information. This survey paper provides an extensive overview of recent efforts that aim to identify,…

人工智能 · 计算机科学 2023-09-13 Vipula Rawte , Amit Sheth , Amitava Das
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