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Large language models (LLMs) have revolutionized natural language processing, yet their propensity for hallucination, generating plausible but factually incorrect or fabricated content, remains a critical challenge. This report provides a…

Computation and Language · Computer Science 2025-08-05 Manuel Cossio

Hallucination remains a critical bottleneck for large language models (LLMs), undermining their reliability in real-world applications, especially in Retrieval-Augmented Generation (RAG) systems. While existing hallucination detection…

Computation and Language · Computer Science 2026-03-26 Zhuo Li , Yupeng Zhang , Pengyu Cheng , Jiajun Song , Mengyu Zhou , Hao Li , Shujie Hu , Yu Qin , Erchao Zhao , Xiaoxi Jiang , Guanjun Jiang

Hallucination detection is critical for ensuring the reliability of large language models (LLMs) in context-based generation. Prior work has explored intrinsic signals available during generation, among which attention offers a direct view…

Computation and Language · Computer Science 2026-02-23 Siya Qi , Yudong Chen , Runcong Zhao , Qinglin Zhu , Zhanghao Hu , Wei Liu , Yulan He , Zheng Yuan , Lin Gui

The Large Visual Language Models (LVLMs) enhances user interaction and enriches user experience by integrating visual modality on the basis of the Large Language Models (LLMs). It has demonstrated their powerful information processing and…

Artificial Intelligence · Computer Science 2024-10-22 Wei Lan , Wenyi Chen , Qingfeng Chen , Shirui Pan , Huiyu Zhou , Yi Pan

While large language models (LLMs) have taken great strides towards helping humans with a plethora of tasks, hallucinations remain a major impediment towards gaining user trust. The fluency and coherence of model generations even when…

Computation and Language · Computer Science 2024-08-23 Ben Snyder , Marius Moisescu , Muhammad Bilal Zafar

With the rapid advancement of Large Language Models (LLMs), LLM-based approaches have demonstrated strong problem-solving capabilities across various domains. However, in automatic programming, a single LLM is typically limited to…

Software Engineering · Computer Science 2025-04-22 Zixiao Zhao , Jing Sun , Zhe Hou , Zhiyuan Wei , Cheng-Hao Cai , Miao Qiao , Jin Song Dong

Large language models (LLMs), despite their remarkable text generation capabilities, often hallucinate and generate text that is factually incorrect and not grounded in real-world knowledge. This poses serious risks in domains like…

Computation and Language · Computer Science 2025-11-18 Raavi Gupta , Pranav Hari Panicker , Sumit Bhatia , Ganesh Ramakrishnan

Hallucination in Large Language Models (LLMs) refers to the generation of content that is not faithful to the input or the real-world facts. This paper provides a rigorous treatment of hallucination in LLMs, including formal definitions and…

Computation and Language · Computer Science 2025-08-01 Esmail Gumaan

Hallucinations in Large Language Models (LLMs), defined as the generation of content inconsistent with facts or context, represent a core obstacle to their reliable deployment in critical domains. Current research primarily focuses on…

Computation and Language · Computer Science 2026-03-20 Yanyi Liu , Qingwen Yang , Tiezheng Guo , Feiyu Qu , Jun Liu , Yingyou Wen

This project develops a self correcting framework for large language models (LLMs) that detects and mitigates hallucinations during multi-step reasoning. Rather than relying solely on final answer correctness, our approach leverages fine…

Artificial Intelligence · Computer Science 2025-11-21 Chelsea Zou , Yiheng Yao , Basant Khalil

The integration of Large Language Models (LLMs) with optimization modeling offers a promising avenue for advancing decision-making in operations research (OR). Traditional optimization methods,such as linear programming, mixed integer…

Computation and Language · Computer Science 2025-10-24 Guoyun Zhang

Empowered by large language models (LLMs), intelligent agents have become a popular paradigm for interacting with open environments to facilitate AI deployment. However, hallucinations generated by LLMs-where outputs are inconsistent with…

Machine Learning · Computer Science 2025-07-23 Siyuan Liu , Wenjing Liu , Zhiwei Xu , Xin Wang , Bo Chen , Tao Li

Large Language Models (LLMs) are increasingly deployed in safety-critical domains, yet remain susceptible to hallucinations. While prior works have proposed confidence representation methods for hallucination detection, most of these…

Machine Learning · Computer Science 2025-11-17 Elyes Hajji , Aymen Bouguerra , Fabio Arnez

Large Language Models (LLMs) are known to hallucinate and generate non-factual outputs which can undermine user trust. Traditional methods to directly mitigate hallucinations, such as representation editing and contrastive decoding, often…

Machine Learning · Computer Science 2025-03-11 Prasenjit Dey , Srujana Merugu , Sivaramakrishnan Kaveri

Large Language Models (LLMs) suffer from hallucination problems, which hinder their reliability in sensitive applications. In the black-box setting, several self-consistency-based techniques have been proposed for hallucination detection.…

Computation and Language · Computer Science 2025-02-25 Yihao Xue , Kristjan Greenewald , Youssef Mroueh , Baharan Mirzasoleiman

Large audio-language models (LALMs) enhance traditional large language models by integrating audio perception capabilities, allowing them to tackle audio-related tasks. Previous research has primarily focused on assessing the performance of…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-13 Chun-Yi Kuan , Wei-Ping Huang , Hung-yi Lee

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

Large language models (LLMs) produce systematically misleading outputs, from hallucinated citations to strategic deception of evaluators, yet these phenomena are studied by separate communities with incompatible terminology. We propose a…

Computers and Society · Computer Science 2026-04-07 Jerick Shi , Terry Jingcheng Zhang , Zhijing Jin , Vincent Conitzer

This study introduces a LLMs powered multiagent ensemble method to address challenges in hallucination and data labeling, particularly in large-scale EHR datasets. Manual labeling of such datasets requires domain expertise and is…

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