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Large language models (LLMs) are susceptible to generating inaccurate or false information, often referred to as "hallucinations" or "confabulations." While several technical advancements have been made to detect hallucinated content by…

Human-Computer Interaction · Computer Science 2025-08-12 Hyo Jin Do , Rachel Ostrand , Werner Geyer , Keerthiram Murugesan , Dennis Wei , Justin Weisz

Before deploying a language model (LM) within a given domain, it is important to measure its tendency to generate factually incorrect information in that domain. Existing methods for factuality evaluation of LLM generation focus on facts…

Computation and Language · Computer Science 2024-02-06 Dor Muhlgay , Ori Ram , Inbal Magar , Yoav Levine , Nir Ratner , Yonatan Belinkov , Omri Abend , Kevin Leyton-Brown , Amnon Shashua , Yoav Shoham

Large language models (LLMs) are known to hallucinate, producing natural language outputs that are not grounded in the input, reference materials, or real-world knowledge. In enterprise applications where AI features support business…

Computation and Language · Computer Science 2025-08-05 Hagyeong Shin , Binoy Robin Dalal , Iwona Bialynicka-Birula , Navjot Matharu , Ryan Muir , Xingwei Yang , Samuel W. K. Wong

Large language models (LLMs) have shown remarkable performance on a variety of NLP tasks, and are being rapidly adopted in a wide range of use cases. It is therefore of vital importance to holistically evaluate the factuality of their…

Computation and Language · Computer Science 2024-04-26 Jiaqing Yuan , Lin Pan , Chung-Wei Hang , Jiang Guo , Jiarong Jiang , Bonan Min , Patrick Ng , Zhiguo Wang

Automatic fact-checking plays a crucial role in combating the spread of misinformation. Large Language Models (LLMs) and Instruction-Following variants, such as InstructGPT and Alpaca, have shown remarkable performance in various natural…

Computation and Language · Computer Science 2023-09-04 Tsun-Hin Cheung , Kin-Man Lam

Large Language Models (LLMs) tend to be unreliable in the factuality of their answers. To address this problem, NLP researchers have proposed a range of techniques to estimate LLM's confidence over facts. However, due to the lack of a…

Computation and Language · Computer Science 2024-11-28 Matéo Mahaut , Laura Aina , Paula Czarnowska , Momchil Hardalov , Thomas Müller , Lluís Màrquez

Guaranteeing the correctness and factuality of language model (LM) outputs is a major open problem. In this work, we propose conformal factuality, a framework that can ensure high probability correctness guarantees for LMs by connecting…

Machine Learning · Computer Science 2024-02-20 Christopher Mohri , Tatsunori Hashimoto

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…

Machine Learning · Computer Science 2026-02-02 Albert Sawczyn , Jakub Binkowski , Denis Janiak , Bogdan Gabrys , Tomasz Kajdanowicz

Visual reasoning is central to human cognition, enabling individuals to interpret and abstractly understand their environment. Although recent Multimodal Large Language Models (MLLMs) have demonstrated impressive performance across language…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Jing Bi , Junjia Guo , Susan Liang , Guangyu Sun , Luchuan Song , Yunlong Tang , Jinxi He , Jiarui Wu , Ali Vosoughi , Chen Chen , Chenliang Xu

Large language models (LLMs), especially when instruction-tuned for chat, have become part of our daily lives, freeing people from the process of searching, extracting, and integrating information from multiple sources by offering a…

Computation and Language · Computer Science 2024-11-01 Yuxia Wang , Minghan Wang , Muhammad Arslan Manzoor , Fei Liu , Georgi Georgiev , Rocktim Jyoti Das , Preslav Nakov

Despite their impressive generative capabilities, LLMs are hindered by fact-conflicting hallucinations in real-world applications. The accurate identification of hallucinations in texts generated by LLMs, especially in complex inferential…

Computation and Language · Computer Science 2024-05-28 Xiang Chen , Duanzheng Song , Honghao Gui , Chenxi Wang , Ningyu Zhang , Yong Jiang , Fei Huang , Chengfei Lv , Dan Zhang , Huajun Chen

Large language models (LLMs) excel at generating long-form responses, but evaluating their factuality remains challenging due to complex inter-sentence dependencies within the generated facts. Prior solutions predominantly follow a…

Computation and Language · Computer Science 2025-09-30 Xin Liu , Lechen Zhang , Sheza Munir , Yiyang Gu , Lu Wang

This survey addresses the crucial issue of factuality in Large Language Models (LLMs). As LLMs find applications across diverse domains, the reliability and accuracy of their outputs become vital. We define the Factuality Issue as the…

Large language models (LLMs), despite their remarkable text generation capabilities, often hallucinate and generate text that is factually incorrect and not grounded in real-world knowledge. This poses serious risks in domains like…

Computation and Language · Computer Science 2025-11-18 Raavi Gupta , Pranav Hari Panicker , Sumit Bhatia , Ganesh Ramakrishnan

Benchmarking modern large language models (LLMs) on complex and realistic tasks is critical to advancing their development. In this work, we evaluate the factual accuracy and citation performance of state-of-the-art LLMs on the task of…

Computation and Language · Computer Science 2024-12-25 Maya Patel , Aditi Anand

Large Language Models (LLMs) have demonstrated remarkable capabilities, revolutionizing the integration of AI in daily life applications. However, they are prone to hallucinations, generating claims that contradict established facts,…

Computation and Language · Computer Science 2024-06-14 A B M Ashikur Rahman , Saeed Anwar , Muhammad Usman , Ajmal Mian

Large Language Models (LLMs) can generate factually inaccurate content even if they have corresponding knowledge, which critically undermines their reliability. Existing approaches attempt to mitigate this by incorporating uncertainty in QA…

Computation and Language · Computer Science 2026-04-14 Xiaoning Dong , Chengyan Wu , Yajie Wen , Yu Chen , Yun Xue , Jing Zhang , Wei Xu , Bolei Ma

Recent research shows that pre-trained language models (PLMs) suffer from "prompt bias" in factual knowledge extraction, i.e., prompts tend to introduce biases toward specific labels. Prompt bias presents a significant challenge in…

Computation and Language · Computer Science 2024-03-27 Ziyang Xu , Keqin Peng , Liang Ding , Dacheng Tao , Xiliang Lu

Despite showing increasingly human-like abilities, large language models (LLMs) often struggle with factual inaccuracies, i.e. "hallucinations", even when they hold relevant knowledge. To address these hallucinations, current approaches…

Computation and Language · Computer Science 2024-06-12 Xiaoying Zhang , Baolin Peng , Ye Tian , Jingyan Zhou , Lifeng Jin , Linfeng Song , Haitao Mi , Helen Meng

With the recent appearance of LLMs in practical settings, having methods that can effectively detect factual inconsistencies is crucial to reduce the propagation of misinformation and improve trust in model outputs. When testing on existing…

Computation and Language · Computer Science 2023-05-25 Philippe Laban , Wojciech Kryściński , Divyansh Agarwal , Alexander R. Fabbri , Caiming Xiong , Shafiq Joty , Chien-Sheng Wu