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Large Language Models (LLMs) are powerful linguistic engines but remain susceptible to hallucinations: plausible-sounding outputs that are factually incorrect or unsupported. In this work, we present a mathematically grounded framework to…

Computation and Language · Computer Science 2025-11-20 Moses Kiprono

As Large Language Models (LLMs) continue to advance in their ability to write human-like text, a key challenge remains around their tendency to hallucinate generating content that appears factual but is ungrounded. This issue of…

Computation and Language · Computer Science 2024-01-09 S. M Towhidul Islam Tonmoy , S M Mehedi Zaman , Vinija Jain , Anku Rani , Vipula Rawte , Aman Chadha , Amitava Das

The widespread adoption of large language and vision models in real-world applications has made urgent the need to address hallucinations -- instances where models produce incorrect or nonsensical outputs. These errors can propagate…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Zhengyi Ho , Siyuan Liang , Dacheng Tao

Despite impressive advances in Natural Language Generation (NLG) and Large Language Models (LLMs), researchers are still unclear about important aspects of NLG evaluation. To substantiate this claim, I examine current classifications of…

Computation and Language · Computer Science 2024-01-17 Kees van Deemter

AI applications driven by multimodal large language models (MLLMs) are prone to hallucinations and pose considerable risks to human users. Crucially, such hallucinations are not equally problematic: some hallucination contents could be…

Artificial Intelligence · Computer Science 2026-04-09 Jianhong Pang , Ruoxi Cheng , Ziyi Ye , Xingjun Ma , Zuxuan Wu , Xuanjing Huang , Yu-Gang Jiang

Large Language Models (LLMs) have demonstrated remarkable proficiency in generating text that closely resemble human writing. However, they often generate factually incorrect statements, a problem typically referred to as 'hallucination'.…

Hallucinations pose a significant challenge to the reliability of large vision-language models, making their detection essential for ensuring accuracy in critical applications. Current detection methods often rely on computationally…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Eunkyu Park , Minyeong Kim , Gunhee Kim

Hallucination remains a persistent challenge in Large Language Models (LLMs), particularly in context-grounded settings such as RAG and agentic AI systems. This study focuses on contextual hallucination detection in summarization tasks. We…

Computation and Language · Computer Science 2026-05-12 I. F. Atasoy , B. Mutlu , E. A. Sezer , A. Wahdan

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…

Recent research has shown that hallucinations, omissions, and biases are prevalent in everyday use-cases of LLMs. However, chatbots used in medical contexts must provide consistent advice in situations where non-medical factors are…

Computation and Language · Computer Science 2025-11-05 Jonathan Liu , Haoling Qiu , Jonathan Lasko , Damianos Karakos , Mahsa Yarmohammadi , Mark Dredze

Hallucination is a well-known phenomenon in text generated by large language models (LLMs). The existence of hallucinatory responses is found in almost all application scenarios e.g., summarization, question-answering (QA) etc. For…

Computation and Language · Computer Science 2023-12-11 Mobashir Sadat , Zhengyu Zhou , Lukas Lange , Jun Araki , Arsalan Gundroo , Bingqing Wang , Rakesh R Menon , Md Rizwan Parvez , Zhe Feng

Large Language Models (LLMs) have demonstrated remarkable capabilities across diverse natural language processing tasks, yet they remain susceptible to hallucinations -- generating content that is factually incorrect, unfaithful to provided…

Computation and Language · Computer Science 2026-05-25 Ahmed Cherif

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

Recent advancements in large vision-language models (LVLMs) have demonstrated impressive capability in visual information understanding with human language. Despite these advances, LVLMs still face challenges with multimodal hallucination,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-16 Zongbo Han , Zechen Bai , Haiyang Mei , Qianli Xu , Changqing Zhang , Mike Zheng Shou

The troubling rise of hallucination presents perhaps the most significant impediment to the advancement of responsible AI. In recent times, considerable research has focused on detecting and mitigating hallucination in Large Language Models…

Artificial Intelligence · Computer Science 2024-04-02 Anku Rani , Vipula Rawte , Harshad Sharma , Neeraj Anand , Krishnav Rajbangshi , Amit Sheth , Amitava Das

Concerns regarding the propensity of Large Language Models (LLMs) to produce inaccurate outputs, also known as hallucinations, have escalated. Detecting them is vital for ensuring the reliability of applications relying on LLM-generated…

Computation and Language · Computer Science 2024-05-31 Ernesto Quevedo , Jorge Yero , Rachel Koerner , Pablo Rivas , Tomas Cerny

Despite the many advances of Large Language Models (LLMs) and their unprecedented rapid evolution, their impact and integration into every facet of our daily lives is limited due to various reasons. One critical factor hindering their…

Computation and Language · Computer Science 2024-08-20 Yakir Yehuda , Itzik Malkiel , Oren Barkan , Jonathan Weill , Royi Ronen , Noam Koenigstein

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…

Computation and Language · Computer Science 2025-12-09 Sujoy Nath , Arkaprabha Basu , Sharanya Dasgupta , Swagatam Das

Large language models (LLMs) exhibit hallucinations in long-form question-answering tasks across various domains and wide applications. Current hallucination detection and mitigation datasets are limited in domains and sizes, which struggle…

Computation and Language · Computer Science 2024-12-20 Yuzhe Gu , Ziwei Ji , Wenwei Zhang , Chengqi Lyu , Dahua Lin , Kai Chen

Large language models (LLMs), including ChatGPT, Bard, and Llama, have achieved remarkable successes over the last two years in a range of different applications. In spite of these successes, there exist concerns that limit the wide…

Computation and Language · Computer Science 2024-01-17 Junliang Luo , Tianyu Li , Di Wu , Michael Jenkin , Steve Liu , Gregory Dudek