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Despite their success, large language models (LLMs) face the critical challenge of hallucinations, generating plausible but incorrect content. While much research has focused on hallucinations in multiple modalities including images and…

Software Engineering · Computer Science 2024-10-15 Nan Jiang , Qi Li , Lin Tan , Tianyi Zhang

Large language models (LLMs) are increasingly being adopted as the cognitive core of embodied agents. However, inherited hallucinations, which stem from failures to ground user instructions in the observed physical environment, can lead to…

This study addresses the problem of hallucinated span detection in the outputs of large language models. It has received less attention than output-level hallucination detection despite its practical importance. Prior work has shown that…

Computation and Language · Computer Science 2025-09-16 Yuya Ogasa , Yuki Arase

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

Neural sequence models can generate highly fluent sentences, but recent studies have also shown that they are also prone to hallucinate additional content not supported by the input. These variety of fluent but wrong outputs are…

Computation and Language · Computer Science 2021-06-04 Chunting Zhou , Graham Neubig , Jiatao Gu , Mona Diab , Paco Guzman , Luke Zettlemoyer , Marjan Ghazvininejad

The internet is rife with unattributed, deliberately misleading, or otherwise untrustworthy content. Though large language models (LLMs) are often tasked with autonomous web browsing, the extent to which they have learned the simple…

Computation and Language · Computer Science 2025-08-08 Gustaf Ahdritz , Anat Kleiman

Large Language Models have significantly advanced natural language processing tasks, but remain prone to generating incorrect or misleading but plausible arguments. This issue, known as hallucination, is particularly concerning in…

Computation and Language · Computer Science 2025-12-04 Ahmad Aghaebrahimian

Large Audio-Language Models (LALMs) have recently achieved strong performance across various audio-centric tasks. However, hallucination, where models generate responses that are semantically incorrect or acoustically unsupported, remains…

Sound · Computer Science 2026-04-22 Feiyu Zhao , Yiming Chen , Wenhuan Lu , Daipeng Zhang , Xianghu Yue , Jianguo Wei

Large Language Models (LLMs) possess a remarkable capacity to generate persuasive and intelligible language. However, coherence does not equate to truthfulness, as the responses often contain subtle hallucinations. Existing benchmarks are…

Computation and Language · Computer Science 2026-02-24 Alex Robertson , Huizhi Liang , Mahbub Gani , Rohit Kumar , Srijith Rajamohan

Hallucination in large language models (LLMs) is a fundamental challenge, particularly in open-domain question answering. Prior work attempts to detect hallucination with model-internal signals such as token-level entropy or generation…

Computation and Language · Computer Science 2025-11-25 Shuo Zhang , Fabrizio Gotti , Fengran Mo , Jian-Yun Nie

As large language models (LLMs) are increasingly deployed in high-stakes domains, detecting hallucinated content$\unicode{x2013}$text that is not grounded in supporting evidence$\unicode{x2013}$has become a critical challenge. Existing…

Computation and Language · Computer Science 2025-05-02 Deanna Emery , Michael Goitia , Freddie Vargus , Iulia Neagu

In recent years, with the rapid development of the depth and breadth of large language models' capabilities, various corresponding evaluation benchmarks have been emerging in increasing numbers. As a quantitative assessment tool for model…

Computation and Language · Computer Science 2025-08-22 Shiwen Ni , Guhong Chen , Shuaimin Li , Xuanang Chen , Siyi Li , Bingli Wang , Qiyao Wang , Xingjian Wang , Yifan Zhang , Liyang Fan , Chengming Li , Ruifeng Xu , Le Sun , Min Yang

Despite continuously improving performance, contemporary image captioning models are prone to "hallucinating" objects that are not actually in a scene. One problem is that standard metrics only measure similarity to ground truth captions…

Computation and Language · Computer Science 2019-04-02 Anna Rohrbach , Lisa Anne Hendricks , Kaylee Burns , Trevor Darrell , Kate Saenko

Large Language Models (LLMs) are known to hallucinate, whereby they generate plausible but inaccurate text. This phenomenon poses significant risks in critical applications, such as medicine or law, necessitating robust hallucination…

Computation and Language · Computer Science 2024-10-23 Benedict Aaron Tjandra , Muhammed Razzak , Jannik Kossen , Kunal Handa , Yarin Gal

Medical Large Language Models (MLLMs) play a crucial role in ophthalmic diagnosis, holding significant potential to address vision-threatening diseases. However, their accuracy is constrained by hallucinations stemming from limited…

Computation and Language · Computer Science 2025-10-02 Xiaoyu Pan , Yang Bai , Ke Zou , Yang Zhou , Jun Zhou , Huazhu Fu , Yih-Chung Tham , Yong Liu

Large Language Models (LLMs) have advanced machine translation but remain vulnerable to hallucinations. Unfortunately, existing MT benchmarks are not capable of exposing failures in multilingual LLMs. To disclose hallucination in…

Computation and Language · Computer Science 2025-10-29 Xinwei Wu , Heng Liu , Jiang Zhou , Xiaohu Zhao , Linlong Xu , Longyue Wang , Weihua Luo , Kaifu Zhang

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…

Computation and Language · Computer Science 2026-03-03 Litian Liu , Reza Pourreza , Sunny Panchal , Apratim Bhattacharyya , Yubing Jian , Yao Qin , Roland Memisevic

Large language models(LLMs) excel at text generation and knowledge question-answering tasks, but they are prone to generating hallucinated content, severely limiting their application in high-risk domains. Current hallucination detection…

Computation and Language · Computer Science 2025-12-25 Shize Liang , Hongzhi Wang

Since large language models (LLMs) achieve significant success in recent years, the hallucination issue remains a challenge, numerous benchmarks are proposed to detect the hallucination. Nevertheless, some of these benchmarks are not…

Computation and Language · Computer Science 2024-10-11 Kedi Chen , Qin Chen , Jie Zhou , Yishen He , Liang He

Since the introduction of ChatGPT, large language models (LLMs) have demonstrated significant utility in various tasks, such as answering questions through retrieval-augmented generation. Context can be retrieved using a vectorized…

Computation and Language · Computer Science 2025-07-01 Ming Cheung
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