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Large language models (large LMs) are susceptible to producing text that contains hallucinated content. An important instance of this problem is self-contradiction, where the LM generates two contradictory sentences within the same context.…

Computation and Language · Computer Science 2024-03-19 Niels Mündler , Jingxuan He , Slobodan Jenko , Martin Vechev

Large Language Models (LLMs) currently respond to every prompt. However, they can produce incorrect answers when they lack knowledge or capability -- a problem known as hallucination. We instead propose post-training an LLM to generate…

Computation and Language · Computer Science 2026-02-17 Tim Franzmeyer , Archie Sravankumar , Lijuan Liu , Yuning Mao , Rui Hou , Sinong Wang , Jakob N. Foerster , Luke Zettlemoyer , Madian Khabsa

When asked to summarize articles or answer questions given a passage, large language models (LLMs) can hallucinate details and respond with unsubstantiated answers that are inaccurate with respect to the input context. This paper describes…

Computation and Language · Computer Science 2024-10-04 Yung-Sung Chuang , Linlu Qiu , Cheng-Yu Hsieh , Ranjay Krishna , Yoon Kim , James Glass

Recent advancements in Multimodal Large Language Models (MLLMs) have extended their capabilities to video understanding. Yet, these models are often plagued by "hallucinations", where irrelevant or nonsensical content is generated,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Yuxuan Wang , Yueqian Wang , Dongyan Zhao , Cihang Xie , Zilong Zheng

Large Language Models (LLMs) have transformed natural language processing (NLP) tasks, but they suffer from hallucination, generating plausible yet factually incorrect content. This issue extends to Video-Language Models (VideoLLMs), where…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Ahmad Khalil , Mahmoud Khalil , Alioune Ngom

Large language models (LLMs) have gained broad applications across various domains but still struggle with hallucinations. Currently, hallucinations occur frequently in the generation of factual content and pose a great challenge to…

Computation and Language · Computer Science 2025-12-01 Zouying Cao , Yifei Yang , XiaoJing Li , Hai Zhao

Language models, particularly generative models, are susceptible to hallucinations, generating outputs that contradict factual knowledge or the source text. This study explores methods for detecting hallucinations in three SemEval-2024 Task…

Large Vision-Language Models (LVLMs) integrate image encoders with Large Language Models (LLMs) to process multi-modal inputs and perform complex visual tasks. However, they often generate hallucinations by describing non-existent objects…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Yaqi Sun , Kyohei Atarashi , Koh Takeuchi , Hisashi Kashima

Large vision-language models (LVLMs) achieve strong performance on visual reasoning tasks but remain highly susceptible to hallucination. Existing detection methods predominantly rely on coarse, whole-image measures of how an object token…

Large language models (LLMs) have revolutionized the field of natural language processing with their impressive reasoning and question-answering capabilities. However, these models are sometimes prone to generating credible-sounding but…

Computation and Language · Computer Science 2026-04-21 Ranganath Krishnan , Piyush Khanna , Omesh Tickoo

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,…

Artificial Intelligence · Computer Science 2023-09-13 Vipula Rawte , Amit Sheth , Amitava Das

As LLM-powered chatbots are increasingly deployed in mental health services, detecting hallucinations and omissions has become critical for user safety. However, state-of-the-art LLM-as-a-judge methods often fail in high-risk healthcare…

Computation and Language · Computer Science 2026-04-09 Khizar Hussain , Bradley A. Malin , Zhijun Yin , Susannah Leigh Rose , Murat Kantarcioglu

This study explores the ability of Large Language Model (LLM) agents to detect and correct hallucinations in AI-generated content. A primary agent was tasked with creating a blog about a fictional Danish artist named Flipfloppidy, which was…

Cryptography and Security · Computer Science 2024-10-28 Ted Kwartler , Matthew Berman , Alan Aqrawi

The Retrieval-augmented generation (RAG) system based on Large language model (LLM) has made significant progress. It can effectively reduce factuality hallucinations, but faithfulness hallucinations still exist. Previous methods for…

Computation and Language · Computer Science 2026-01-07 Jianpeng Hu , Yanzeng Li , Jialun Zhong , Wenfa Qi , Lei Zou

Large Language Models (LLMs) excel in language comprehension and generation but are prone to hallucinations, producing factually incorrect or unsupported outputs. Retrieval Augmented Generation (RAG) systems address this issue by grounding…

Information Retrieval · Computer Science 2025-04-09 Chandana Sree Mala , Gizem Gezici , Fosca Giannotti

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

Large Language Model (LLM) hallucinations are usually treated as defects of the model or its decoding strategy. Drawing on classical linguistics, we argue that a query's form can also shape a listener's (and model's) response. We…

Computation and Language · Computer Science 2026-02-25 William Watson , Nicole Cho , Sumitra Ganesh , Manuela Veloso

Large language models (LLMs) are highly capable but face latency challenges in real-time applications, such as conducting online hallucination detection. To overcome this issue, we propose a novel framework that leverages a small language…

Computation and Language · Computer Science 2024-08-26 Mengya Hu , Rui Xu , Deren Lei , Yaxi Li , Mingyu Wang , Emily Ching , Eslam Kamal , Alex Deng

Recent research on query generation has focused on using Large Language Models (LLMs), which despite bringing state-of-the-art performance, also introduce issues with hallucinations in the generated queries. In this work, we introduce…

Computation and Language · Computer Science 2024-10-16 Zhongxiang Sun , Zihua Si , Xiaoxue Zang , Kai Zheng , Yang Song , Xiao Zhang , Jun Xu

Large language models (LLMs) can generate executable code from natural language descriptions, but the resulting programs frequently contain bugs due to hallucinations. In the absence of formal specifications, existing approaches attempt to…

Software Engineering · Computer Science 2026-03-31 Yihan Dai , Sijie Liang , Haotian Xu , Peichu Xie , Sergey Mechtaev
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