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Large language models (LLMs) have shown substantial capacity for generating fluent, contextually appropriate responses. However, they can produce hallucinated outputs, especially when a user query includes one or more false premises-claims…

计算与语言 · 计算机科学 2026-02-18 Yuehan Qin , Shawn Li , Yi Nian , Xinyan Velocity Yu , Yue Zhao , Xuezhe Ma

Hallucinations in Large Language Models (LLMs) pose a significant challenge, generating misleading or unverifiable content that undermines trust and reliability. Existing evaluation methods, such as KnowHalu, employ multi-stage verification…

计算与语言 · 计算机科学 2026-04-10 Chenggong Zhang , Haopeng Wang , Hexi Meng

Large language models (LLMs) exhibit strong generative capabilities but remain vulnerable to confabulations, fluent yet unreliable outputs that vary arbitrarily even under identical prompts. Leveraging a quantum tensor network based…

计算与语言 · 计算机科学 2026-02-03 Pragatheeswaran Vipulanandan , Kamal Premaratne , Dilip Sarkar

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…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Yaqi Sun , Kyohei Atarashi , Koh Takeuchi , Hisashi Kashima

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…

计算与语言 · 计算机科学 2025-09-16 Yuya Ogasa , Yuki Arase

Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG) systems are increasingly deployed in industry applications, yet their reliability remains hampered by challenges in detecting hallucinations. While supervised…

计算与语言 · 计算机科学 2025-05-30 Julia Belikova , Konstantin Polev , Rauf Parchiev , Dmitry Simakov

Large language models (LLMs) can be prone to hallucinations - generating unreliable outputs that are unfaithful to their inputs, external facts or internally inconsistent. In this work, we address several challenges for post-hoc…

计算与语言 · 计算机科学 2024-08-12 Simon Valentin , Jinmiao Fu , Gianluca Detommaso , Shaoyuan Xu , Giovanni Zappella , Bryan Wang

Detecting hallucinations in large language models (LLMs) remains a fundamental challenge for their trustworthy deployment. Going beyond basic uncertainty-driven hallucination detection frameworks, we propose a simple yet powerful method…

人工智能 · 计算机科学 2025-10-10 Rui Wang , Zeming Wei , Guanzhang Yue , Meng Sun

Detecting hallucinations in large language models (LLMs) is critical for their safety in many applications. Without proper detection, these systems often provide harmful, unreliable answers. In recent years, LLMs have been actively used in…

计算与语言 · 计算机科学 2026-02-26 Rodion Oblovatny , Alexandra Kuleshova , Konstantin Polev , Alexey Zaytsev

Large pretrained generative models like GPT-3 often suffer from hallucinating non-existent or incorrect content, which undermines their potential merits in real applications. Existing work usually attempts to detect these hallucinations…

计算与语言 · 计算机科学 2022-04-05 Tianyu Liu , Yizhe Zhang , Chris Brockett , Yi Mao , Zhifang Sui , Weizhu Chen , Bill Dolan

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…

计算与语言 · 计算机科学 2024-08-26 Mengya Hu , Rui Xu , Deren Lei , Yaxi Li , Mingyu Wang , Emily Ching , Eslam Kamal , Alex Deng

Large Language Models (LLMs) are adept at text manipulation -- tasks such as machine translation and text summarization. However, these models can also be prone to hallucination, which can be detrimental to the faithfulness of any answers…

计算与语言 · 计算机科学 2024-04-04 Priyesh Vakharia , Devavrat Joshi , Meenal Chavan , Dhananjay Sonawane , Bhrigu Garg , Parsa Mazaheri

The surge in applications of large language models (LLMs) has prompted concerns about the generation of misleading or fabricated information, known as hallucinations. Therefore, detecting hallucinations has become critical to maintaining…

机器学习 · 计算机科学 2024-09-27 Xuefeng Du , Chaowei Xiao , Yixuan Li

Large Language Models (LLMs) hallucinate, and detecting these cases is key to ensuring trust. While many approaches address hallucination detection at the response or span level, recent work explores token-level detection, enabling more…

机器学习 · 计算机科学 2025-10-07 Jakob Snel , Seong Joon Oh

We design probes trained on the internal representations of a transformer language model to predict its hallucinatory behavior on three grounded generation tasks. To train the probes, we annotate for span-level hallucination on both sampled…

计算与语言 · 计算机科学 2024-06-11 Sky CH-Wang , Benjamin Van Durme , Jason Eisner , Chris Kedzie

This work introduces a novel methodology for the automatic detection of hallucinations generated during large language model (LLM) inference. The proposed approach is based on a systematic taxonomy and controlled reproduction of diverse…

计算与语言 · 计算机科学 2025-10-08 Maksym Zavhorodnii , Dmytro Dehtiarov , Anna Konovalenko

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…

计算与语言 · 计算机科学 2024-08-20 Yakir Yehuda , Itzik Malkiel , Oren Barkan , Jonathan Weill , Royi Ronen , Noam Koenigstein

The Retrieval-augmented generation (RAG) system based on Large language model (LLM) has made significant progress. It can effectively reduce factuality hallucinations, but faithfulness hallucinations still exist. Previous methods for…

计算与语言 · 计算机科学 2026-01-07 Jianpeng Hu , Yanzeng Li , Jialun Zhong , Wenfa Qi , Lei Zou

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…

计算与语言 · 计算机科学 2026-03-03 Litian Liu , Reza Pourreza , Sunny Panchal , Apratim Bhattacharyya , Yubing Jian , Yao Qin , Roland Memisevic

When asked to summarize articles or answer questions given a passage, large language models (LLMs) can hallucinate details and respond with unsubstantiated answers that are inaccurate with respect to the input context. This paper describes…

计算与语言 · 计算机科学 2024-10-04 Yung-Sung Chuang , Linlu Qiu , Cheng-Yu Hsieh , Ranjay Krishna , Yoon Kim , James Glass