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Large vision-language models (LVLMs) suffer from hallucination a lot, generating responses that apparently contradict to the image content occasionally. The key problem lies in its weak ability to comprehend detailed content in a…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Zhiyang Chen , Yousong Zhu , Yufei Zhan , Zhaowen Li , Chaoyang Zhao , Jinqiao Wang , Ming Tang

Retrieval-Augmented Generation (RAG) models are critically undermined by citation hallucinations, a deceptive failure where a model cites a source that fails to support its claim. While existing work attributes hallucination to a simple…

计算与语言 · 计算机科学 2026-03-31 Maxime Dassen , Rebecca Kotula , Kenton Murray , Andrew Yates , Dawn Lawrie , Efsun Kayi , James Mayfield , Kevin Duh

Large language models (LLMs) have transformed natural language processing (NLP), enabling diverse applications by integrating large-scale pre-trained knowledge. However, their static knowledge limits dynamic reasoning over external…

计算与语言 · 计算机科学 2025-09-26 Harshad Khadilkar , Abhay Gupta

Large Language Models (LLMs) often generate hallucinations, producing outputs that are contextually inaccurate or factually incorrect. We introduce HICD, a novel method designed to induce hallucinations for contrastive decoding to mitigate…

计算与语言 · 计算机科学 2025-05-26 Xinyan Jiang , Hang Ye , Yongxin Zhu , Xiaoying Zheng , Zikang Chen , Jun Gong

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

Large language models (LLMs) are prone to three types of hallucination: Input-Conflicting, Context-Conflicting and Fact-Conflicting hallucinations. The purpose of this study is to mitigate the different types of hallucination by exploiting…

人工智能 · 计算机科学 2025-06-17 Ao Jia , Haiming Wu , Guohui Yao , Dawei Song , Songkun Ji , Yazhou Zhang

Retrieval Augmented Generation faces a trade-off: concatenating documents in a long prompt enables multi-document reasoning but creates prefill bottlenecks, while encoding document KV caches separately offers speed but breaks cross-document…

人工智能 · 计算机科学 2026-01-14 Giulio Corallo , Paolo Papotti

Pre-trained language models (LMs) store knowledge in their parameters and can generate informative responses when used in conversational systems. However, LMs suffer from the problem of "hallucination:" they may generate plausible-looking…

计算与语言 · 计算机科学 2022-12-21 Weiwei Sun , Zhengliang Shi , Shen Gao , Pengjie Ren , Maarten de Rijke , Zhaochun Ren

Retrieval-augmented generation (RAG) relies on retrieved context to guide large language models (LLM), yet treats retrieval as a weak heuristic rather than verifiable evidence -- leading to unsupported answers, hallucinations, and reliance…

计算与语言 · 计算机科学 2026-02-02 Björn Deiseroth , Max Henning Höth , Kristian Kersting , Letitia Parcalabescu

Despite the remarkable ability of large vision-language models (LVLMs) in image comprehension, these models frequently generate plausible yet factually incorrect responses, a phenomenon known as hallucination.Recently, in large language…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Xiaoye Qu , Qiyuan Chen , Wei Wei , Jishuo Sun , Jianfeng Dong

Large language models often expose their brittleness in reasoning tasks, especially while executing long chains of reasoning over context. We propose MemReasoner, a new and simple memory-augmented LLM architecture, in which the memory…

计算与语言 · 计算机科学 2025-03-12 Payel Das , Ching-Yun Ko , Sihui Dai , Georgios Kollias , Subhajit Chaudhury , Aurelie Lozano

Retrieval-augmented generation (RAG) often falls short when retrieved context includes confusing semi-relevant passages, or when answering questions require deep contextual understanding and reasoning. We propose an efficient fine-tuning…

Large language models (LLMs) have significantly advanced natural language processing tasks, yet they are susceptible to generating inaccurate or unreliable responses, a phenomenon known as hallucination. In critical domains such as health…

计算与语言 · 计算机科学 2024-09-20 Sumera Anjum , Hanzhi Zhang , Wenjun Zhou , Eun Jin Paek , Xiaopeng Zhao , Yunhe Feng

Retrieval-Augmented Language Models (RALMs) have significantly improved performance in open-domain question answering (QA) by leveraging external knowledge. However, RALMs still struggle with unanswerable queries, where the retrieved…

计算与语言 · 计算机科学 2024-08-09 Seong-Il Park , Seung-Woo Choi , Na-Hyun Kim , Jay-Yoon Lee

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) exhibit remarkable generative capabilities but often suffer from hallucinations. Retrieval-augmented generation (RAG) offers an effective solution by incorporating external knowledge, but existing methods still…

计算与语言 · 计算机科学 2024-12-17 Xiaoxi Li , Jiajie Jin , Yujia Zhou , Yongkang Wu , Zhonghua Li , Qi Ye , Zhicheng Dou

Ensuring truthfulness in large language models (LLMs) remains a critical challenge for reliable text generation. While supervised fine-tuning and reinforcement learning with human feedback have shown promise, they require a substantial…

机器学习 · 计算机科学 2026-03-17 Manh Nguyen , Sunil Gupta , Hung Le

Retrieval-augmented Generation (RAG) is a prevalent approach for domain-specific LLMs, yet it is often plagued by "Retrieval Hallucinations"--a phenomenon where fine-tuned models fail to recognize and act upon poor-quality retrieved…

人工智能 · 计算机科学 2026-01-21 Letian Zhang , Guanghao Meng , Xudong Ren , Yiming Wang , Shu-Tao Xia

The proliferation of misinformation necessitates robust yet computationally efficient fact verification systems. While current state-of-the-art approaches leverage Large Language Models (LLMs) for generating explanatory rationales, these…

计算与语言 · 计算机科学 2025-11-10 Alamgir Munir Qazi , John P. McCrae , Jamal Abdul Nasir

Retrieval-augmented generation (RAG) enhances large language models (LLMs) by incorporating external knowledge to generate a response within a context with improved accuracy and reduced hallucinations. However, multi-modal RAG systems face…

机器学习 · 计算机科学 2025-01-09 Matin Mortaheb , Mohammad A. Amir Khojastepour , Srimat T. Chakradhar , Sennur Ulukus