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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 language models (LLMs) are prone to hallucinations, i.e., statements unsupported by the input or training data, hindering reliable deployment. In parallel, numerous uncertainty estimation (UE) methods have been proposed to quantify…

计算与语言 · 计算机科学 2026-05-27 Yedidia Agnimo , Anna Korba , Annabelle Blangero , Nicolas Chesneau , Karteek Alahari

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…

计算与语言 · 计算机科学 2026-04-10 Chenggong Zhang , Haopeng Wang , Hexi Meng

Hallucinations in large vision-language models (LVLMs) pose significant challenges for real-world applications, as LVLMs may generate responses that appear plausible yet remain inconsistent with the associated visual content. This issue…

计算机视觉与模式识别 · 计算机科学 2025-07-23 Xin Dong , Shichao Dong , Jin Wang , Jing Huang , Li Zhou , Zenghui Sun , Lihua Jing , Jingsong Lan , Xiaoyong Zhu , Bo Zheng

The recent advancements in Large Language Models (LLMs) have garnered widespread acclaim for their remarkable emerging capabilities. However, the issue of hallucination has parallelly emerged as a by-product, posing significant concerns.…

Detecting spans of hallucination in LLM-generated answers is crucial for improving factual consistency. This paper presents a span-level hallucination detection framework for the SemEval-2025 Shared Task, focusing on English and Arabic…

计算与语言 · 计算机科学 2025-04-29 Passant Elchafei , Mervet Abu-Elkheir

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

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

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…

Vision language models (VLMs) perceive the world through a combination of a visual encoder and a large language model (LLM). The visual encoder, pre-trained on large-scale vision-text datasets, provides zero-shot generalization to visual…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Moon Ye-Bin , Nam Hyeon-Woo , Wonseok Choi , Tae-Hyun Oh

Retrieval-Augmented Generation (RAG) has become a primary technique for mitigating hallucinations in large language models (LLMs). However, incomplete knowledge extraction and insufficient understanding can still mislead LLMs to produce…

计算与语言 · 计算机科学 2025-06-30 Haichuan Hu , Congqing He , Xiaochen Xie , Quanjun Zhang

Large vision-language models (LVLMs) have made substantial progress in integrating large language models (LLMs) with visual inputs, enabling advanced multimodal reasoning. Despite their success, a persistent challenge is hallucination-where…

计算与语言 · 计算机科学 2025-06-11 Jinghan He , Kuan Zhu , Haiyun Guo , Junfeng Fang , Zhenglin Hua , Yuheng Jia , Ming Tang , Tat-Seng Chua , Jinqiao Wang

Despite the advanced capabilities of Large Vision-Language Models (LVLMs), they frequently suffer from object hallucination. One reason is that visual features and pretrained textual representations often become intertwined in the deeper…

人工智能 · 计算机科学 2026-05-12 Jialin Wu , Wei Shi , Han Shen , Peigui Qi , Kunsheng Tang , Zhicong Huang , Binghao Wang , Zhou Yang

Multimodal large reasoning models (MLRMs) often suffer from hallucinations that stem not only from insufficient visual grounding but also from imbalanced allocation between perception and reasoning processes. Building upon recent…

人工智能 · 计算机科学 2026-03-10 Haolang Lu , Bolun Chu , WeiYe Fu , Guoshun Nan , Junning Liu , Minghui Pan , Qiankun Li , Yi Yu , Hua Wang , Kun Wang

Hallucination detection has become increasingly important for improving the reliability of large language models (LLMs). Recently, hybrid approaches such as HaMI, which combine semantic consistency with internal model states via Multiple…

计算与语言 · 计算机科学 2026-05-14 Shota Fujikawa , Issei Sato

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 pose a significant challenge to the reliability of large language models (LLMs) in critical domains. Recent benchmarks designed to assess LLM hallucinations within conventional NLP tasks, such as knowledge-intensive question…

计算与语言 · 计算机科学 2024-09-17 Zhiying Zhu , Yiming Yang , Zhiqing Sun

In the age of misinformation, hallucination - the tendency of Large Language Models (LLMs) to generate non-factual or unfaithful responses - represents the main risk for their global utility. Despite LLMs becoming increasingly multilingual,…

计算与语言 · 计算机科学 2026-02-03 Saad Obaid ul Islam , Anne Lauscher , Goran Glavaš

Large language models (LLMs) can be prone to hallucinations - generating unreliable outputs that are unfaithful to their inputs, external facts or internally inconsistent. In this work, we address several challenges for post-hoc…

计算与语言 · 计算机科学 2024-08-12 Simon Valentin , Jinmiao Fu , Gianluca Detommaso , Shaoyuan Xu , Giovanni Zappella , Bryan Wang

Large language models (LLMs) are known to "hallucinate" by generating false or misleading outputs. Hallucinations pose various harms, from erosion of trust to widespread misinformation. Existing hallucination evaluation, however, focuses…

机器学习 · 计算机科学 2026-02-03 Prakhar Ganesh , Reza Shokri , Golnoosh Farnadi