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Hallucination in large language models (LLMs) can be detected by assessing the uncertainty of model outputs, typically measured using entropy. Semantic entropy (SE) enhances traditional entropy estimation by quantifying uncertainty at the…

Machine Learning · Computer Science 2025-06-03 Dang Nguyen , Ali Payani , Baharan Mirzasoleiman

Large-scale vision-language models (VLMs), e.g., CLIP, learn broad visual concepts from tedious training data, showing superb generalization ability. Amount of prompt learning methods have been proposed to efficiently adapt the VLMs to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-11 Hongyu Hu , Tiancheng Lin , Jie Wang , Zhenbang Sun , Yi Xu

Large Language Models prompting, such as using in-context demonstrations, is a mainstream technique for invoking LLMs to perform high-performance and solid complex reasoning (e.g., mathematical reasoning, commonsense reasoning), and has the…

Artificial Intelligence · Computer Science 2024-10-08 Zhicheng Yang , Yinya Huang , Jing Xiong , Liang Feng , Xiaodan Liang , Yiwei Wang , Jing Tang

Recent methodologies utilizing synthetic datasets have aimed to address inconsistent hallucinations in large language models (LLMs); however,these approaches are primarily tailored to specific tasks, limiting their generalizability.…

Artificial Intelligence · Computer Science 2025-02-28 Xinxin You , Xien Liu , Qixin Sun , Huan Zhang , Kaiyin Zhou , Shaohui Liu , GuoPing Hu , ShiJin Wang , Si Liu , Ji Wu

Visual hallucinations in Large Language Models (LLMs), where the model generates responses that are inconsistent with the visual input, pose a significant challenge to their reliability, particularly in contexts where precise and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Nokimul Hasan Arif , Shadman Rabby , Md Hefzul Hossain Papon , Sabbir Ahmed

Large language models (LLMs) have revolutionized natural language processing, yet their tendency to hallucinate poses serious challenges for reliable deployment. Despite numerous hallucination detection methods, their evaluations often rely…

Computation and Language · Computer Science 2025-08-15 Denis Janiak , Jakub Binkowski , Albert Sawczyn , Bogdan Gabrys , Ravid Shwartz-Ziv , Tomasz Kajdanowicz

Factual consistency is an important quality in dialogue summarization. Large language model (LLM)-based automatic text summarization models generate more factually consistent summaries compared to those by smaller pretrained language…

Computation and Language · Computer Science 2024-06-24 Rongxin Zhu , Jey Han Lau , Jianzhong Qi

Large language models (LLMs) have recently been shown to deliver impressive performance in various NLP tasks. To tackle multi-step reasoning tasks, few-shot chain-of-thought (CoT) prompting includes a few manually crafted step-by-step…

Computation and Language · Computer Science 2023-05-29 Lei Wang , Wanyu Xu , Yihuai Lan , Zhiqiang Hu , Yunshi Lan , Roy Ka-Wei Lee , Ee-Peng Lim

Large Language Models (LLMs) have gained significant popularity for their impressive performance across diverse fields. However, LLMs are prone to hallucinate untruthful or nonsensical outputs that fail to meet user expectations in many…

Computation and Language · Computer Science 2023-11-23 Tianhang Zhang , Lin Qiu , Qipeng Guo , Cheng Deng , Yue Zhang , Zheng Zhang , Chenghu Zhou , Xinbing Wang , Luoyi Fu

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

Instruction-tuned Large Language Models (LLMs) have exhibited impressive language understanding and the capacity to generate responses that follow specific prompts. However, due to the computational demands associated with training these…

Computation and Language · Computer Science 2024-03-26 Yida Mu , Ben P. Wu , William Thorne , Ambrose Robinson , Nikolaos Aletras , Carolina Scarton , Kalina Bontcheva , Xingyi Song

We introduce a large language model (LLM) based approach to answer complex questions requiring multi-hop numerical reasoning over financial reports. While LLMs have exhibited remarkable performance on various natural language and reasoning…

Computation and Language · Computer Science 2023-11-28 Karmvir Singh Phogat , Chetan Harsha , Sridhar Dasaratha , Shashishekar Ramakrishna , Sai Akhil Puranam

Large Language Models (LLMs) often produce code with subtle implementation-level bugs despite strong benchmark performance. These errors are hard for LLMs to spot and can have large behavioural effects; yet when asked to summarise code,…

Software Engineering · Computer Science 2025-11-25 Lukas Twist

Advancement in large pretrained language models has significantly improved their performance for conditional language generation tasks including summarization albeit with hallucinations. To reduce hallucinations, conventional methods…

Computation and Language · Computer Science 2023-11-15 Arvind Krishna Sridhar , Erik Visser

This article investigates a zero-shot approach to hypernymy prediction using large language models (LLMs). The study employs a method based on text probability calculation, applying it to various generated prompts. The experiments…

Computation and Language · Computer Science 2024-01-10 Mikhail Tikhomirov , Natalia Loukachevitch

Large language models (LLMs) are increasingly utilized in various complex reasoning tasks due to their excellent instruction following capability. However, the model's performance is highly dependent on the open-ended characteristics of the…

Computation and Language · Computer Science 2026-04-28 Zhenzhen Huang , Chaoning Zhang , Fachrina Dewi Puspitasari , Jiaquan Zhang , Yitian Zhou , Shuxu Chen , Yang Yang

Artificial intelligence chatbots driven by large language models (LLMs) have the potential to increase public science literacy and support scientific research, as they can quickly summarize complex scientific information in accessible…

Computation and Language · Computer Science 2025-04-02 Uwe Peters , Benjamin Chin-Yee

Hallucinations -- plausible yet erroneous outputs -- remain a critical barrier to reliable deployment of large language models (LLMs). We present the first systematic study linking hallucination incidence to internal-state drift induced by…

Computation and Language · Computer Science 2025-05-23 Zeyu Wei , Shuo Wang , Xiaohui Rong , Xuemin Liu , He Li

Large Language Models (LLMs) have demonstrated promise in medical knowledge assessments, yet their practical utility in real-world clinical decision-making remains underexplored. In this study, we evaluated the performance of three…

Computation and Language · Computer Science 2025-12-30 Mengdi Chai , Ali R. Zomorrodi

Large language models (LLMs) excel in abstractive summarization tasks, delivering fluent and pertinent summaries. Recent advancements have extended their capabilities to handle long-input contexts, exceeding 100k tokens. However, in…

Computation and Language · Computer Science 2024-11-15 Mathieu Ravaut , Aixin Sun , Nancy F. Chen , Shafiq Joty