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In modern dialogue systems, the use of Large Language Models (LLMs) has grown exponentially due to their capacity to generate diverse, relevant, and creative responses. Despite their strengths, striking a balance between the LLMs'…

Computation and Language · Computer Science 2023-08-01 Chen Zhang

Large Language Models (LLMs) are frequently utilized as sources of knowledge for question-answering. While it is known that LLMs may lack access to real-time data or newer data produced after the model's cutoff date, it is less clear how…

Computation and Language · Computer Science 2025-07-30 Agam Shah , Liqin Ye , Sebastian Jaskowski , Wei Xu , Sudheer Chava

The rapidly developing Large Vision Language Models (LVLMs) have shown notable capabilities on a range of multi-modal tasks, but still face the hallucination phenomena where the generated texts do not align with the given contexts,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Wenyi Xiao , Ziwei Huang , Leilei Gan , Wanggui He , Haoyuan Li , Zhelun Yu , Fangxun Shu , Hao Jiang , Linchao Zhu

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

Reliability of LLMs is questionable even as they get better at more tasks. A wider adoption of LLMs is contingent on whether they are usably factual. And if they are not, on whether they can properly calibrate their confidence in their…

Computation and Language · Computer Science 2025-04-01 Sharad Duwal

Hallucinations in large vision-language models (LVLMs) pose significant challenges for real-world applications, as LVLMs may generate responses that appear plausible yet remain inconsistent with the associated visual content. This issue…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Xin Dong , Shichao Dong , Jin Wang , Jing Huang , Li Zhou , Zenghui Sun , Lihua Jing , Jingsong Lan , Xiaoyong Zhu , Bo Zheng

Recent advancements in multimodal large language models (MLLMs) have shown unprecedented capabilities in advancing various vision-language tasks. However, MLLMs face significant challenges with hallucinations, and misleading outputs that do…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Shengqiong Wu , Hao Fei , Liangming Pan , William Yang Wang , Shuicheng Yan , Tat-Seng Chua

Large language models often necessitate grounding on external knowledge to generate faithful and reliable answers. Yet even with the correct groundings in the reference, they can ignore them and rely on wrong groundings or their inherent…

Computation and Language · Computer Science 2024-06-14 Shuo Zhang , Liangming Pan , Junzhou Zhao , William Yang Wang

Large Language Models (LLMs) have exhibited impressive generation capabilities, but they suffer from hallucinations when solely relying on their internal knowledge, especially when answering questions that require less commonly known…

Computation and Language · Computer Science 2023-11-01 Wenting Zhao , Ye Liu , Tong Niu , Yao Wan , Philip S. Yu , Shafiq Joty , Yingbo Zhou , Semih Yavuz

Knowledge is fundamental to the overall capabilities of Large Language Models (LLMs). The knowledge paradigm of a model, which dictates how it encodes and utilizes knowledge, significantly affects its performance. Despite the continuous…

Computation and Language · Computer Science 2025-04-10 Xiaotian Ye , Mengqi Zhang , Shu Wu

Large language models (LLMs) demonstrate remarkable capabilities but face challenges from hallucinations, which typically arise from insufficient knowledge or context. While instructing LLMs to acknowledge knowledge limitations by…

Computation and Language · Computer Science 2025-08-08 Jiaqi Li , Yixuan Tang , Yi Yang

The hallucination problem of Large Language Models (LLMs) significantly limits their reliability and trustworthiness. Humans have a self-awareness process that allows us to recognize what we don't know when faced with queries. Inspired by…

Computation and Language · Computer Science 2024-10-01 Ziwei Ji , Delong Chen , Etsuko Ishii , Samuel Cahyawijaya , Yejin Bang , Bryan Wilie , Pascale Fung

The unprecedented performance of large language models (LLMs) necessitates improvements in evaluations. Rather than merely exploring the breadth of LLM abilities, we believe meticulous and thoughtful designs are essential to thorough,…

Retrieval-augmented generation (RAG) is a key technique for leveraging external knowledge and reducing hallucinations in large language models (LLMs). However, RAG still struggles to fully prevent hallucinated responses. To address this, it…

Computation and Language · Computer Science 2025-02-14 Xuzhao Geng , Haozhao Wang , Jun Wang , Wei Liu , Ruixuan Li

Hallucinations in large language models (LLMs) are outputs that are syntactically coherent but factually incorrect or contextually inconsistent. They are persistent obstacles in high-stakes industrial settings such as engineering design,…

Software Engineering · Computer Science 2026-04-07 Brian Freeman , Adam Kicklighter , Matt Erdman , Zach Gordon

Large language models (LLMs) exhibit excellent performance in natural language processing (NLP), but remain highly sensitive to the quality of input queries, especially when these queries contain misleading or inaccurate information.…

Computation and Language · Computer Science 2025-06-02 Guocong Li , Weize Liu , Yihang Wu , Ping Wang , Shuaihan Huang , Hongxia Xu , Jian Wu

Large language models (LLMs) have achieved remarkable success across a wide range of applications especially when augmented by external knowledge through retrieval-augmented generation (RAG). Despite their widespread adoption, recent…

Computation and Language · Computer Science 2026-04-14 Tianzhe Zhao , Jiaoyan Chen , Shuxiu Zhang , Haiping Zhu , Qika Lin , Jun Liu

Hallucination is often viewed as a direct consequence of missing knowledge: a model answers incorrectly when the correct answer is absent from its generation-time distribution, and correctly when it is present. We test this assumption by…

Computation and Language · Computer Science 2026-05-22 Jewon Yeom , Jaewon Sok , Heejun Kim , Seonghyeon Park , Jeongjae Park , Taesup Kim

Autoregressive large language models (LLMs) pre-trained by next token prediction are inherently proficient in generative tasks. However, their performance on knowledge-driven tasks such as factual knowledge querying remains unsatisfactory.…

Computation and Language · Computer Science 2026-01-14 Peng Yu , Cheng Deng , Beiya Dai , Xinbing Wang , Ying Wen

To address hallucination issues in large language models (LLMs), this paper proposes a method for mitigating prompt-induced hallucinations. Building on a knowledge distillation chain-style model, we introduce a code module to guide…

Computation and Language · Computer Science 2026-01-07 Jinbo Hao , Kai Yang , Qingzhen Su , Yang Chen , Yifan Li , Chao Jiang