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Large language models (LLMs) frequently hallucinate and produce factual errors, yet our understanding of why they make these errors remains limited. In this study, we delve into the underlying mechanisms of LLM hallucinations from the…

计算与语言 · 计算机科学 2024-03-13 Shiqi Chen , Miao Xiong , Junteng Liu , Zhengxuan Wu , Teng Xiao , Siyang Gao , Junxian He

Diffusion language models (D-LLMs) offer parallel denoising and bidirectional context, but hallucination detection for D-LLMs remains underexplored. Prior detectors developed for auto-regressive LLMs typically rely on single-pass cues and…

计算与语言 · 计算机科学 2026-02-10 Arshia Hemmat , Philip Torr , Yongqiang Chen , Junchi Yu

Large Language Models (LLMs)-based question answering (QA) systems play a critical role in modern AI, demonstrating strong performance across various tasks. However, LLM-generated responses often suffer from hallucinations, unfaithful…

计算与语言 · 计算机科学 2026-01-29 Yuqing Zhao , Ziyao Liu , Yongsen Zheng , Kwok-Yan Lam

Large language models (LLMs) often fail to synthesize information from their context to generate an accurate response. This renders them unreliable in knowledge intensive settings where reliability of the output is key. A critical component…

计算与语言 · 计算机科学 2024-11-06 Rajkumar Ramamurthy , Meghana Arakkal Rajeev , Oliver Molenschot , James Zou , Nazneen Rajani

This paper primarily focuses on the hallucinations caused due to AI language models(LLMs).LLMs have shown extraordinary Language understanding and generation capabilities .Still it has major a disadvantage hallucinations which give outputs…

计算与语言 · 计算机科学 2026-04-07 Sailesh kiran kurra , Shiek Ruksana , Vishal Borusu

While Large Language Models (LLMs) have emerged as powerful foundational models to solve a variety of tasks, they have also been shown to be prone to hallucinations, i.e., generating responses that sound confident but are actually incorrect…

计算与语言 · 计算机科学 2026-04-29 Jiawei Li , Akshayaa Magesh , Venugopal V. Veeravalli

Large language models (LLMs) have transformed various sectors, including education, finance, and medicine, by enhancing content generation and decision-making processes. However, their integration into the medical field is cautious due to…

信息检索 · 计算机科学 2025-04-15 Yifan Feng , Hao Hu , Xingliang Hou , Shiquan Liu , Shihui Ying , Shaoyi Du , Han Hu , Yue Gao

Recent decoding methods improve the factuality of large language models (LLMs) by refining how the next token is selected during generation. These methods typically operate at the token level, leveraging internal representations to suppress…

计算与语言 · 计算机科学 2025-09-16 Hongxiang Zhang , Hao Chen , Muhao Chen , Tianyi Zhang

Large language models are extensively applied across a wide range of tasks, such as customer support, content creation, educational tutoring, and providing financial guidance. However, a well-known drawback is their predisposition to…

计算与语言 · 计算机科学 2024-07-08 Noa Nonkes , Sergei Agaronian , Evangelos Kanoulas , Roxana Petcu

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

Large Language Models (LLMs) frequently generate hallucinated content, posing significant challenges for applications where factuality is crucial. While existing hallucination detection methods typically operate at the sentence level or…

机器学习 · 计算机科学 2026-02-02 Albert Sawczyn , Jakub Binkowski , Denis Janiak , Bogdan Gabrys , Tomasz Kajdanowicz

Today's advanced driver assistance systems (ADAS), like adaptive cruise control or rear collision warning, are finding broader adoption across vehicle classes. Integrating such advanced, multimodal Large Language Models (LLMs) on board a…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Malsha Ashani Mahawatta Dona , Beatriz Cabrero-Daniel , Yinan Yu , Christian Berger

Abstractive text summarization has garnered increased interest as of late, in part due to the proliferation of large language models (LLMs). One of the most pressing problems related to generation of abstractive summaries is the need to…

计算与语言 · 计算机科学 2023-10-17 Grant C. Forbes , Parth Katlana , Zeydy Ortiz

Large Vision-Language Models (LVLMs) achieve strong performance on many multimodal tasks, but object hallucinations severely undermine their reliability. Most existing studies focus on the text modality, attributing hallucinations to overly…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Jiale Song , Jiaxin Luo , Xue-song Tang , Kuangrong Hao , Mingbo Zhao

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…

计算与语言 · 计算机科学 2025-05-23 Zeyu Wei , Shuo Wang , Xiaohui Rong , Xuemin Liu , He Li

Academic researchers need efficient and reliable methods for collecting high-quality information from trusted sources, but modern tools for AI-assisted research still suffer from the tendency of Large Language Models (LLMs) to produce…

计算与语言 · 计算机科学 2026-05-21 Gábor Recski , Szilveszter Tóth , Nadia Verdha , István Boros , Ádám Kovács

Large Language Models (LLMs) have demonstrated remarkable performance across various tasks. However, they are prone to contextual hallucination, generating information that is either unsubstantiated or contradictory to the given context.…

计算与语言 · 计算机科学 2025-04-29 Siyi Liu , Kishaloy Halder , Zheng Qi , Wei Xiao , Nikolaos Pappas , Phu Mon Htut , Neha Anna John , Yassine Benajiba , Dan Roth

Today's Large Language Models (LLMs) have showcased exemplary capabilities, ranging from simple text generation to advanced image processing. Such models are currently being explored for in-vehicle services such as supporting perception…

计算机视觉与模式识别 · 计算机科学 2024-09-20 Malsha Ashani Mahawatta Dona , Beatriz Cabrero-Daniel , Yinan Yu , Christian Berger

Large language models (LMs) are prone to generate factual errors, which are often called hallucinations. In this paper, we introduce a comprehensive taxonomy of hallucinations and argue that hallucinations manifest in diverse forms, each…

Retriever Augmented Generation (RAG) systems have become pivotal in enhancing the capabilities of language models by incorporating external knowledge retrieval mechanisms. However, a significant challenge in deploying these systems in…

计算与语言 · 计算机科学 2024-06-06 Masha Belyi , Robert Friel , Shuai Shao , Atindriyo Sanyal