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Retrieval-Augmented Generation (RAG) has become a widely adopted approach to enhance Large Language Models (LLMs) by incorporating external knowledge and reducing hallucinations. However, noisy or irrelevant documents are often introduced…

Computation and Language · Computer Science 2026-01-07 Jingyu Liu , Jiaen Lin , Yong Liu

Large Language Models (LLMs) showcase impressive capabilities but encounter challenges like hallucination, outdated knowledge, and non-transparent, untraceable reasoning processes. Retrieval-Augmented Generation (RAG) has emerged as a…

Computation and Language · Computer Science 2024-03-28 Yunfan Gao , Yun Xiong , Xinyu Gao , Kangxiang Jia , Jinliu Pan , Yuxi Bi , Yi Dai , Jiawei Sun , Meng Wang , Haofen Wang

Hallucinations in large language models (LLMs) refer to the phenomenon of LLMs producing responses that are coherent yet factually inaccurate. This issue undermines the effectiveness of LLMs in practical applications, necessitating research…

Computation and Language · Computer Science 2024-06-11 Weihang Su , Changyue Wang , Qingyao Ai , Yiran HU , Zhijing Wu , Yujia Zhou , Yiqun Liu

Recent advancements in massively multilingual machine translation systems have significantly enhanced translation accuracy; however, even the best performing systems still generate hallucinations, severely impacting user trust. Detecting…

Computation and Language · Computer Science 2024-10-22 Kenza Benkirane , Laura Gongas , Shahar Pelles , Naomi Fuchs , Joshua Darmon , Pontus Stenetorp , David Ifeoluwa Adelani , Eduardo Sánchez

Retrieval-augmented generation (RAG) is increasingly recognized as an effective approach to mitigating the hallucination of large language models (LLMs) through the integration of external knowledge. While numerous efforts, most studies…

Computation and Language · Computer Science 2025-10-10 Shuo Yu , Mingyue Cheng , Qi Liu , Daoyu Wang , Jiqian Yang , Jie Ouyang , Yucong Luo , Chenyi Lei , Enhong Chen

The reliability of Large Language Models (LLMs) in high-stakes domains such as healthcare, law, and scientific discovery is often compromised by hallucinations. These failures typically stem from two sources: data-driven hallucinations and…

Machine Learning · Computer Science 2026-03-03 Xinyue Zeng , Junhong Lin , Yujun Yan , Feng Guo , Liang Shi , Jun Wu , Dawei Zhou

Hallucinations in large language models (LLMs) have recently become a significant problem. A recent effort in this direction is a shared task at Semeval 2024 Task 6, SHROOM, a Shared-task on Hallucinations and Related Observable…

Computation and Language · Computer Science 2024-04-12 Rahul Mehta , Andrew Hoblitzell , Jack O'Keefe , Hyeju Jang , Vasudeva Varma

Hallucination is a key roadblock for applications of Large Language Models (LLMs), particularly for enterprise applications that are sensitive to information accuracy. To address this issue, two general approaches have been explored:…

Computation and Language · Computer Science 2024-10-15 Xinxi Chen , Li Wang , Wei Wu , Qi Tang , Yiyao Liu

Can Large Language Models (LLMs) be trained to avoid hallucinating factual statements, and can Retrieval-Augmented Generation (RAG) be triggered only when necessary to reduce retrieval and computation costs? In this work, we address both…

Large Language Models (LLMs) have gained significant popularity for their impressive performance across diverse fields. However, LLMs are prone to hallucinate untruthful or nonsensical outputs that fail to meet user expectations in many…

Computation and Language · Computer Science 2023-11-23 Tianhang Zhang , Lin Qiu , Qipeng Guo , Cheng Deng , Yue Zhang , Zheng Zhang , Chenghu Zhou , Xinbing Wang , Luoyi Fu

Large Language Models (LLMs) are increasingly used in various contexts, yet remain prone to generating non-factual content, commonly referred to as "hallucinations". The literature categorizes hallucinations into several types, including…

Computation and Language · Computer Science 2025-03-12 Samir Abdaljalil , Hasan Kurban , Erchin Serpedin

Large language models (LLMs) have achieved impressive performance across a wide range of natural language processing tasks, yet they often produce hallucinated content that undermines factual reliability. To address this challenge, we…

Computation and Language · Computer Science 2026-03-23 Yaxin Zhao , Yu Zhang

Large language models (LLMs) offer transformative potential for clinical decision support in spine surgery but pose significant risks through hallucinations, which are factually inconsistent or contextually misaligned outputs that may…

Machine Learning · Computer Science 2025-11-21 Dong Chen , Yanzhe Wei , Zonglin He , Guan-Ming Kuang , Canhua Ye , Meiru An , Huili Peng , Yong Hu , Huiren Tao , Kenneth MC Cheung

Large Language Models (LLMs) exhibit remarkable capabilities but are prone to generating inaccurate or hallucinatory responses. This limitation stems from their reliance on vast pretraining datasets, making them susceptible to errors in…

Computation and Language · Computer Science 2024-04-02 Chi-Min Chan , Chunpu Xu , Ruibin Yuan , Hongyin Luo , Wei Xue , Yike Guo , Jie Fu

Detecting hallucinations in large language models (LLMs) is critical for enhancing their reliability and trustworthiness. Most research focuses on hallucinations as deviations from information seen during training. However, the opaque…

Computation and Language · Computer Science 2025-03-26 Fabian Ridder , Malte Schilling

Hallucination remains a critical challenge in large language models (LLMs), hindering the development of reliable multimodal LLMs (MLLMs). Existing solutions often rely on human intervention or underutilize the agent's ability to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Zhongyu Yang , Yingfang Yuan , Xuanming Jiang , Baoyi An , Wei Pang

As large language models (LLMs) evolve from conversational assistants into agents capable of handling complex tasks, they are increasingly deployed in high-risk domains. However, existing benchmarks largely rely on mixed queries and…

Computation and Language · Computer Science 2026-04-28 Yuhe Wu , Guangyu Wang , Yuran Chen , Jiatong Zhang , Yutong Zhang , Yujie Chen , Jiaming Shang , Guang Zhang , Zhuang Liu

Detecting hallucinations in large language model (LLM) outputs is pivotal, yet traditional fine-tuning for this classification task is impeded by the expensive and quickly outdated annotation process, especially across numerous vertical…

Artificial Intelligence · Computer Science 2024-07-09 Dongxu Zhang , Varun Gangal , Barrett Martin Lattimer , Yi Yang

Large Reasoning Models (LRMs) extend large language models with explicit, multi-step reasoning traces to enhance transparency and performance on complex tasks. However, these reasoning traces can be redundant or logically inconsistent,…

Computation and Language · Computer Science 2025-11-18 Changyue Wang , Weihang Su , Qingyao Ai , Yiqun Liu

As organizations increasingly integrate AI-powered question-answering systems into financial information systems for compliance, risk assessment, and decision support, ensuring the factual accuracy of AI-generated outputs becomes a critical…

Computation and Language · Computer Science 2026-03-24 Mahesh Kumar , Bhaskarjit Sarmah , Stefano Pasquali