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Hallucinations in Large Vision-Language Models (LVLMs) significantly undermine their reliability, motivating researchers to explore the causes of hallucination. However, most studies primarily focus on the language aspect rather than the…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Zhangqi Jiang , Junkai Chen , Beier Zhu , Tingjin Luo , Yankun Shen , Xu Yang

Retrieval-Augmented Generation (RAG) models frequently encounter hallucination phenomena when integrating external information with internal parametric knowledge. Empirical studies demonstrate that the disequilibrium between external…

计算与语言 · 计算机科学 2025-05-13 Lei Wang

Large Vision Language Models (LVLMs) have shown remarkable capabilities in multimodal tasks like visual question answering or image captioning. However, inconsistencies between the visual information and the generated text, a phenomenon…

计算机视觉与模式识别 · 计算机科学 2025-03-26 Laura Fieback , Jakob Spiegelberg , Hanno Gottschalk

Methods to evaluate Large Language Model (LLM) responses and detect inconsistencies, also known as hallucinations, with respect to the provided knowledge, are becoming increasingly important for LLM applications. Current metrics fall short…

计算与语言 · 计算机科学 2024-07-16 Hannah Sansford , Nicholas Richardson , Hermina Petric Maretic , Juba Nait Saada

Evaluating the importance of different layers in large language models (LLMs) is crucial for optimizing model performance and interpretability. This paper first explores layer importance using the Activation Variance-Sparsity Score (AVSS),…

计算与语言 · 计算机科学 2024-11-18 Zichen Song , Sitan Huang , Yuxin Wu , Zhongfeng Kang

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…

计算与语言 · 计算机科学 2025-11-25 Shuo Zhang , Fabrizio Gotti , Fengran Mo , Jian-Yun Nie

Large Language Models (LLMs) have demonstrated impressive generative capabilities across diverse tasks but remain susceptible to hallucinations, confidently generated yet factually incorrect outputs. We introduce a reference-free,…

计算与语言 · 计算机科学 2025-10-17 Keshav Kumar

Span-level skill extraction from job advertisements underpins candidate-job matching and labor-market analytics, yet generative large language models (LLMs) often yield malformed spans, boundary drift, and hallucinations, especially with…

计算与语言 · 计算机科学 2026-04-24 Guojing Li , Zichuan Fu , Junyi Li , Faxue Liu , Wenxia Zhou , Yejing Wang , Jingtong Gao , Maolin Wang , Rungen Liu , Wenlin Zhang , Xiangyu Zhao

Vision Language Models (VLMs) have achieved impressive progress in multimodal reasoning; yet, they remain vulnerable to hallucinations, where outputs are not grounded in visual evidence. In this paper, we investigate a previously overlooked…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Sifan Li , Hongkai Chen , Yujun Cai , Qingwen Ye , Liyang Chen , Junsong Yuan , Yiwei Wang

Large Language Models (LLMs) and Large Reasoning Models (LRMs) offer transformative potential for high-stakes domains like finance and law, but their tendency to hallucinate, generating factually incorrect or unsupported content, poses a…

人工智能 · 计算机科学 2026-01-16 Ahmad Pesaranghader , Erin Li

Hallucinations pose a significant challenge to the reliability of large language models (LLMs) in critical domains. Recent benchmarks designed to assess LLM hallucinations within conventional NLP tasks, such as knowledge-intensive question…

计算与语言 · 计算机科学 2024-09-17 Zhiying Zhu , Yiming Yang , Zhiqing Sun

Large Language Models (LLMs) have demonstrated remarkable capabilities, revolutionizing the integration of AI in daily life applications. However, they are prone to hallucinations, generating claims that contradict established facts,…

计算与语言 · 计算机科学 2024-06-14 A B M Ashikur Rahman , Saeed Anwar , Muhammad Usman , Ajmal Mian

Large Language Models (LLMs) often generate incorrect or unsupported content, known as hallucinations. Existing detection methods rely on heuristics or simple models over isolated computational traces such as activations, or attention maps.…

机器学习 · 计算机科学 2025-09-30 Fabrizio Frasca , Guy Bar-Shalom , Yftah Ziser , Haggai Maron

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

Hallucination, a phenomenon where large language models (LLMs) produce output that is factually incorrect or unrelated to the input, is a major challenge for LLM applications that require accuracy and dependability. In this paper, we…

计算与语言 · 计算机科学 2025-04-01 Song Wang , Xun Wang , Jie Mei , Yujia Xie , Sean Muarray , Zhang Li , Lingfeng Wu , Si-Qing Chen , Wayne Xiong

Semantic role labeling (SRL) aims to discover the predicateargument structure of a sentence. End-to-end SRL without syntactic input has received great attention. However, most of them focus on either span-based or dependency-based semantic…

计算与语言 · 计算机科学 2019-01-17 Zuchao Li , Shexia He , Hai Zhao , Yiqing Zhang , Zhuosheng Zhang , Xi Zhou , Xiang Zhou

Large Language Models (LLMs) increasingly mediate access to scholarly information, yet their outputs are typically evaluated at the level of individual statements rather than knowledge structure. This paper introduces structural…

社会与信息网络 · 计算机科学 2026-03-03 Moses Boudourides

Retrieval-augmented generation (RAG) aims to mitigate the hallucination of Large Language Models (LLMs) by retrieving and incorporating relevant external knowledge into the generation process. However, the external knowledge may contain…

计算与语言 · 计算机科学 2026-01-12 Yi Sui , Chaozhuo Li , Chen Zhang , Dawei song , Qiuchi Li

Hallucinations in large language models (LLMs) - instances where models generate plausible but factually incorrect information - present a significant challenge for AI. We introduce "Ask a Local", a novel hallucination detection method…

计算与语言 · 计算机科学 2025-06-05 Aldan Creo , Héctor Cerezo-Costas , Pedro Alonso-Doval , Maximiliano Hormazábal-Lagos

We propose semantic entropy probes (SEPs), a cheap and reliable method for uncertainty quantification in Large Language Models (LLMs). Hallucinations, which are plausible-sounding but factually incorrect and arbitrary model generations,…

计算与语言 · 计算机科学 2024-06-25 Jannik Kossen , Jiatong Han , Muhammed Razzak , Lisa Schut , Shreshth Malik , Yarin Gal