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Evaluating large language models (LLMs) for clinical documentation tasks such as SOAP note generation remains challenging. Unlike standard summarization, these tasks require clinical abstraction, normalization of colloquial language, and…

Artificial Intelligence · Computer Science 2026-04-17 Bhavik Vachhani , Kush Shrisvastava , Pranshu Nema , Sai Chiranthan

Ensuring factual consistency is crucial for natural language generation tasks, particularly in abstractive summarization, where preserving the integrity of information is paramount. Prior works on evaluating factual consistency of…

Computation and Language · Computer Science 2024-10-07 Haoyi Qiu , Kung-Hsiang Huang , Jingnong Qu , Nanyun Peng

Large language models are increasingly being used in patient-facing medical question answering, where hallucinated outputs can vary widely in potential harm. However, existing hallucination standards and evaluation metrics focus primarily…

Computation and Language · Computer Science 2026-03-02 Savan Doshi

Hallucination, where models generate fluent text unsupported by visual evidence, remains a major flaw in vision-language models and is particularly critical in sign language translation (SLT). In SLT, meaning depends on precise grounding in…

Hallucinations in large language model (LLM) outputs severely limit their reliability in knowledge-intensive tasks such as question answering. To address this challenge, we introduce REFIND (Retrieval-augmented Factuality hallucINation…

Computation and Language · Computer Science 2025-04-09 DongGeon Lee , Hwanjo Yu

While large language models (LLMs) have shown remarkable capabilities to generate coherent text, they suffer from the issue of hallucinations -- factually inaccurate statements. Among numerous approaches to tackle hallucinations, especially…

Computation and Language · Computer Science 2025-06-25 Juraj Vladika , Ihsan Soydemir , Florian Matthes

Despite the success achieved in neural abstractive summarization based on pre-trained language models, one unresolved issue is that the generated summaries are not always faithful to the input document. There are two possible causes of the…

Computation and Language · Computer Science 2022-10-06 Xiuying Chen , Mingzhe Li , Xin Gao , Xiangliang Zhang

Multimodal hallucination in multimodal large language models (MLLMs) restricts the correctness of MLLMs. However, multimodal hallucinations are multi-sourced and arise from diverse causes. Existing benchmarks fail to adequately distinguish…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Bowen Dong , Minheng Ni , Zitong Huang , Guanglei Yang , Wangmeng Zuo , Lei Zhang

Factual inconsistencies in generated summaries severely limit the practical applications of abstractive dialogue summarization. Although significant progress has been achieved by using pre-trained models, substantial amounts of hallucinated…

Computation and Language · Computer Science 2023-05-10 Xiangru Tang , Arjun Nair , Borui Wang , Bingyao Wang , Jai Desai , Aaron Wade , Haoran Li , Asli Celikyilmaz , Yashar Mehdad , Dragomir Radev

As we all know, hallucinations prevail in Large Language Models (LLMs), where the generated content is coherent but factually incorrect, which inflicts a heavy blow on the widespread application of LLMs. Previous studies have shown that…

Computation and Language · Computer Science 2024-10-15 Xinping Zhao , Jindi Yu , Zhenyu Liu , Jifang Wang , Dongfang Li , Yibin Chen , Baotian Hu , Min Zhang

This research paper focuses on the challenges posed by hallucinations in large language models (LLMs), particularly in the context of the medical domain. Hallucination, wherein these models generate plausible yet unverified or incorrect…

Computation and Language · Computer Science 2023-10-17 Ankit Pal , Logesh Kumar Umapathi , Malaikannan Sankarasubbu

Hallucination, or the generation of incorrect or fabricated information, remains a critical challenge in large language models (LLMs), particularly in high-stake domains such as legal question answering (QA). In order to mitigate the…

Computation and Language · Computer Science 2025-01-14 Yinghao Hu , Leilei Gan , Wenyi Xiao , Kun Kuang , Fei Wu

Large language models (LLMs) have become pervasive in our everyday life. Yet, a fundamental obstacle prevents their use in many critical applications: their propensity to generate fluent, human-quality content that is not grounded in…

Computation and Language · Computer Science 2025-10-30 Kensuke Mitsuzawa , Damien Garreau

Despite the remarkable performance of generative large language models (LLMs) on abstractive summarization, they face two significant challenges: their considerable size and tendency to hallucinate. Hallucinations are concerning because…

Computation and Language · Computer Science 2024-10-28 George Chrysostomou , Zhixue Zhao , Miles Williams , Nikolaos Aletras

Large language models (LLMs) have demonstrated remarkable performance on various natural language processing tasks. However, they are prone to generating fluent yet untruthful responses, known as "hallucinations". Hallucinations can lead to…

Computation and Language · Computer Science 2024-06-18 Minda Hu , Bowei He , Yufei Wang , Liangyou Li , Chen Ma , Irwin King

Large language models are prone to hallucinating factually incorrect statements. A key source of these errors is exposure to new factual information through supervised fine-tuning (SFT), which can increase hallucinations w.r.t. knowledge…

Computation and Language · Computer Science 2026-04-20 Guy Kaplan , Zorik Gekhman , Zhen Zhu , Lotem Rozner , Yuval Reif , Swabha Swayamdipta , Derek Hoiem , Roy Schwartz

Query-focused summarization (QFS) aims to provide a summary of a single document/multi documents that can satisfy the information needs of a given query. It is useful for various real-world applications, such as abstractive snippet…

Computation and Language · Computer Science 2026-01-06 Zhichao Xu

Discharge summaries require extracting critical information from lengthy electronic health records (EHRs), a process that is labor-intensive when performed manually. Large language models (LLMs) can improve generation efficiency; however,…

Computation and Language · Computer Science 2026-05-06 Severin Ye , Xiao Kong , Xiaopeng He , Guangsu Yan , Dongsuk Oh

This paper aims to address the challenge of hallucinations in Multimodal Large Language Models (MLLMs) particularly for dense image captioning tasks. To tackle the challenge, we identify the current lack of a metric that finely measures the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Cong Chen , Mingyu Liu , Chenchen Jing , Yizhou Zhou , Fengyun Rao , Hao Chen , Bo Zhang , Chunhua Shen

Although many studies have investigated and reduced hallucinations in large language models (LLMs) for single-document tasks, research on hallucination in multi-document summarization (MDS) tasks remains largely unexplored. Specifically, it…

Computation and Language · Computer Science 2025-04-29 Catarina G. Belem , Pouya Pezeshkpour , Hayate Iso , Seiji Maekawa , Nikita Bhutani , Estevam Hruschka