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Despite the recent advancements in abstractive summarization systems leveraged from large-scale datasets and pre-trained language models, the factual correctness of the summary is still insufficient. One line of trials to mitigate this…

Computation and Language · Computer Science 2022-04-19 Hwanhee Lee , Cheoneum Park , Seunghyun Yoon , Trung Bui , Franck Dernoncourt , Juae Kim , Kyomin Jung

Large language models (LLMs) have transformed natural language processing, achieving remarkable performance across diverse tasks. However, their impressive fluency often comes at the cost of producing false or fabricated information, a…

Computation and Language · Computer Science 2026-03-20 Aisha Alansari , Hamzah Luqman

Large language models (LLMs) exhibit extensive medical knowledge but are prone to hallucinations and inaccurate citations, which pose a challenge to their clinical adoption and regulatory compliance. Current methods, such as Retrieval…

Counterfactual reasoning, a hallmark of intelligence, consists of three steps: inferring latent variables from observations (abduction), constructing alternatives (interventions), and predicting their outcomes (prediction). This skill is…

Machine Learning · Computer Science 2025-10-03 Aniket Vashishtha , Qirun Dai , Hongyuan Mei , Amit Sharma , Chenhao Tan , Hao Peng

SemEval-2025 Task 3 (Mu-SHROOM) focuses on detecting hallucinations in content generated by various large language models (LLMs) across multiple languages. This task involves not only identifying the presence of hallucinations but also…

Computation and Language · Computer Science 2025-05-13 Jiaying Hong , Thanet Markchom , Jianfei Xu , Tong Wu , Huizhi Liang

Recently, there has been increased interest in Small Language Models (SLMs), which are fast, show good performance, and have lower hardware demands than large language models (LLMs). However, SLMs hallucinate more frequently than LLMs,…

Computation and Language · Computer Science 2026-05-28 Saptarshi Sengupta , Suhang Wang

Despite their impressive capabilities, large language models (LLMs) have been observed to generate responses that include inaccurate or fabricated information, a phenomenon commonly known as ``hallucination''. In this work, we propose a…

Computation and Language · Computer Science 2024-03-12 Yue Zhang , Leyang Cui , Wei Bi , Shuming Shi

Language Models (LMs) have shown impressive performance in various natural language tasks. However, when it comes to natural language reasoning, LMs still face challenges such as hallucination, generating incorrect intermediate reasoning…

Computation and Language · Computer Science 2023-10-20 Deepak Nathani , David Wang , Liangming Pan , William Yang Wang

Retrieve-augmented generation (RAG) frameworks have emerged as a promising solution to multi-hop question answering(QA) tasks since it enables large language models (LLMs) to incorporate external knowledge and mitigate their inherent…

Computation and Language · Computer Science 2024-12-20 Xiangsen Chen , Xuming Hu , Nan Tang

Large Language Models (LLMs) currently respond to every prompt. However, they can produce incorrect answers when they lack knowledge or capability -- a problem known as hallucination. We instead propose post-training an LLM to generate…

Computation and Language · Computer Science 2026-02-17 Tim Franzmeyer , Archie Sravankumar , Lijuan Liu , Yuning Mao , Rui Hou , Sinong Wang , Jakob N. Foerster , Luke Zettlemoyer , Madian Khabsa

Hallucinations in Large Language Models (LLMs) pose a significant challenge, generating misleading or unverifiable content that undermines trust and reliability. Existing evaluation methods, such as KnowHalu, employ multi-stage verification…

Computation and Language · Computer Science 2026-04-10 Chenggong Zhang , Haopeng Wang , Hexi Meng

Factual error correction (FEC) aims to revise factual errors in false claims with minimal editing, making them faithful to the provided evidence. This task is crucial for alleviating the hallucination problem encountered by large language…

Computation and Language · Computer Science 2023-12-13 Xingwei He , Qianru Zhang , A-Long Jin , Jun Ma , Yuan Yuan , Siu Ming Yiu

Factual hallucinations are a major challenge for Large Language Models (LLMs). They undermine reliability and user trust by generating inaccurate or fabricated content. Recent studies suggest that when generating false statements, the…

Computation and Language · Computer Science 2025-06-02 Giovanni Servedio , Alessandro De Bellis , Dario Di Palma , Vito Walter Anelli , Tommaso Di Noia

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) 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…

Computation and Language · Computer Science 2024-12-17 Xiaoxi Li , Jiajie Jin , Yujia Zhou , Yongkang Wu , Zhonghua Li , Qi Ye , Zhicheng Dou

Retrieval Augmented Generation (RAG) techniques aim to mitigate hallucinations in Large Language Models (LLMs). However, LLMs can still produce information that is unsupported or contradictory to the retrieved contexts. We introduce LYNX, a…

Artificial Intelligence · Computer Science 2024-07-24 Selvan Sunitha Ravi , Bartosz Mielczarek , Anand Kannappan , Douwe Kiela , Rebecca Qian

Despite the dramatic progress in Large Language Model (LLM) development, LLMs often provide seemingly plausible but not factual information, often referred to as hallucinations. Retrieval-augmented LLMs provide a non-parametric approach to…

Computation and Language · Computer Science 2023-11-09 Sai Munikoti , Anurag Acharya , Sridevi Wagle , Sameera Horawalavithana

We propose a new paradigm to help Large Language Models (LLMs) generate more accurate factual knowledge without retrieving from an external corpus, called RECITation-augmented gEneration (RECITE). Different from retrieval-augmented language…

Computation and Language · Computer Science 2023-02-17 Zhiqing Sun , Xuezhi Wang , Yi Tay , Yiming Yang , Denny Zhou

Large language models (LLMs) have significantly improved their reasoning and decision-making capabilities, as seen in methods like ReAct. However, despite its effectiveness in tackling complex tasks, ReAct faces two main challenges: losing…

Artificial Intelligence · Computer Science 2024-10-15 Shuoqiu Li , Han Xu , Haipeng Chen

Large Language Models (LLMs) are often asked to explain their outputs to enhance accuracy and transparency. However, evidence suggests that these explanations can misrepresent the models' true reasoning processes. One effective way to…

Computation and Language · Computer Science 2025-03-13 Danielle Villa , Maria Chang , Keerthiram Murugesan , Rosario Uceda-Sosa , Karthikeyan Natesan Ramamurthy