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The increased use of large language models (LLMs) across a variety of real-world applications calls for automatic tools to check the factual accuracy of their outputs, as LLMs often hallucinate. This is difficult as it requires assessing…

Computation and Language · Computer Science 2025-10-30 Hasan Iqbal , Yuxia Wang , Minghan Wang , Georgi Georgiev , Jiahui Geng , Iryna Gurevych , Preslav Nakov

In healthcare, it is essential for any LLM-generated output to be reliable and accurate, particularly in cases involving decision-making and patient safety. However, the outputs are often unreliable in such critical areas due to the risk of…

Large language models (LLMs) excel in generating fluent utterances but can lack reliable grounding in verified information. At the same time, knowledge-graph-based fact-checkers deliver precise and interpretable evidence, yet suffer from…

Computation and Language · Computer Science 2025-11-06 Shaghayegh Kolli , Richard Rosenbaum , Timo Cavelius , Lasse Strothe , Andrii Lata , Jana Diesner

Large language models (LLMs) are increasingly used to generate scientific reports, but they can produce references that appear plausible while containing corrupted metadata or pointing to papers that do not exist. We introduce CiteCheck, a…

Digital Libraries · Computer Science 2026-05-28 Khashayar Khajavi , Shaghayegh Sadeghi , Rise Adhikari , Alexander Tessier

Hallucinations in large language models (LLMs) during summarization of patient-clinician dialogues pose significant risks to patient care and clinical decision-making. However, the phenomenon remains understudied in the clinical domain,…

Large language models (LLMs) have achieved impressive performance across a wide range of natural language processing tasks, yet they often produce hallucinated content that undermines factual reliability. To address this challenge, we…

Computation and Language · Computer Science 2026-03-23 Yaxin Zhao , Yu Zhang

Assessing factuality of text generated by large language models (LLMs) is an emerging yet crucial research area, aimed at alerting users to potential errors and guiding the development of more reliable LLMs. Nonetheless, the evaluators…

Computation and Language · Computer Science 2023-11-29 Shiqi Chen , Yiran Zhao , Jinghan Zhang , I-Chun Chern , Siyang Gao , Pengfei Liu , Junxian He

Claim verification can be a challenging task. In this paper, we present a method to enhance the robustness and reasoning capabilities of automated claim verification through the extraction of short facts from evidence. Our novel approach,…

Computation and Language · Computer Science 2024-07-29 Nazanin Jafari , James Allan

Hallucination, the generation of factually incorrect information, remains a significant challenge for large language models (LLMs), especially in open-domain long-form generation. Existing approaches for detecting hallucination in long-form…

Large language models (LLMs) often fabricate a hallucinatory text. Several methods have been developed to detect such text by semantically comparing it with the multiple versions probabilistically regenerated. However, a significant issue…

Computation and Language · Computer Science 2024-09-27 Satoshi Munakata , Taku Fukui , Takao Mohri

Large language models (LLMs) are widely used, but they often generate subtle factual errors, especially in long-form text. These errors are fatal in some specialized domains such as medicine. Existing fact-checking with grounding documents…

Computation and Language · Computer Science 2025-05-29 Yingjian Chen , Haoran Liu , Yinhong Liu , Jinxiang Xie , Rui Yang , Han Yuan , Yanran Fu , Peng Yuan Zhou , Qingyu Chen , James Caverlee , Irene Li

Despite the great advancement of Language modeling in recent days, Large Language Models (LLMs) such as GPT3 are notorious for generating non-factual responses, so-called "hallucination" problems. Existing methods for detecting and…

Computation and Language · Computer Science 2025-09-29 Seongho Joo , Kyungmin Min , Jahyun Koo , Kyomin Jung

Fake news detection methods based on writing style have achieved remarkable progress. However, as adversaries increasingly imitate the style of authentic news, the effectiveness of such approaches is gradually diminishing. Recent research…

Artificial Intelligence · Computer Science 2025-11-14 Jing He , Han Zhang , Yuanhui Xiao , Wei Guo , Shaowen Yao , Renyang Liu

The use of large language models (LLMs) has significantly increased since the introduction of ChatGPT in 2022, demonstrating their value across various applications. However, a major challenge for enterprise and commercial adoption of LLMs…

Computation and Language · Computer Science 2024-08-28 N. E. Kriman

Large Language Models (LLMs) hold significant potential for advancing fact-checking by leveraging their capabilities in reasoning, evidence retrieval, and explanation generation. However, existing benchmarks fail to comprehensively evaluate…

Computation and Language · Computer Science 2025-06-17 Shuo Yang , Yuqin Dai , Guoqing Wang , Xinran Zheng , Jinfeng Xu , Jinze Li , Zhenzhe Ying , Weiqiang Wang , Edith C. H. Ngai

Large Language Models (LLMs) frequently generate plausible but non-factual content, a phenomenon known as hallucination. While existing detection methods typically rely on computationally expensive sampling-based consistency checks or…

Machine Learning · Computer Science 2026-05-07 Dan Wilson , Mohamed Akrout

Reasoning Large Language Models (R-LLMs) have significantly advanced complex reasoning tasks but often struggle with factuality, generating substantially more hallucinations than their non-reasoning counterparts on long-form factuality…

Computation and Language · Computer Science 2025-08-08 Xilun Chen , Ilia Kulikov , Vincent-Pierre Berges , Barlas Oğuz , Rulin Shao , Gargi Ghosh , Jason Weston , Wen-tau Yih

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 Language Models (LLMs) have shown impressive capabilities but also a concerning tendency to hallucinate. This paper presents RefChecker, a framework that introduces claim-triplets to represent claims in LLM responses, aiming to detect…

Computation and Language · Computer Science 2024-05-24 Xiangkun Hu , Dongyu Ru , Lin Qiu , Qipeng Guo , Tianhang Zhang , Yang Xu , Yun Luo , Pengfei Liu , Yue Zhang , Zheng Zhang

Artificial Intelligence (AI), particularly Large Language Models (LLMs), is transforming scientific discovery, enabling rapid knowledge generation and hypothesis formulation. However, a critical challenge is hallucination, where LLMs…

Artificial Intelligence · Computer Science 2025-12-30 Bhanu Prakash Vangala , Sajid Mahmud , Pawan Neupane , Joel Selvaraj , Jianlin Cheng