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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

In text generation, hallucinations refer to the generation of seemingly coherent text that contradicts established knowledge. One compelling hypothesis is that hallucinations occur when a language model is given a generation task outside…

Computation and Language · Computer Science 2024-08-21 Ameya Godbole , Nicholas Monath , Seungyeon Kim , Ankit Singh Rawat , Andrew McCallum , Manzil Zaheer

Large Language Models (LLMs) excel in language comprehension and generation but are prone to hallucinations, producing factually incorrect or unsupported outputs. Retrieval Augmented Generation (RAG) systems address this issue by grounding…

Information Retrieval · Computer Science 2025-04-09 Chandana Sree Mala , Gizem Gezici , Fosca Giannotti

The emergence of large language models (LLMs) has significantly advanced the development of natural language processing (NLP), especially in text generation tasks like question answering. However, model hallucinations remain a major…

Computation and Language · Computer Science 2025-12-01 Zhongxin Liu , Zhiwei Wang , Jun Niu , Ying Li , Hongyu Sun , Meng Xu , He Wang , Gaofei Wu , Yuqing Zhang

Tree-search-based reasoning methods have significantly enhanced the reasoning capability of large language models (LLMs) by facilitating the exploration of multiple intermediate reasoning steps, i.e., thoughts. However, these methods suffer…

Computation and Language · Computer Science 2025-05-27 Zhihai Wang , Jie Wang , Jilai Pan , Xilin Xia , Huiling Zhen , Mingxuan Yuan , Jianye Hao , Feng Wu

Large Language Models (LLMs) have demonstrated remarkable human-level natural language generation capabilities. However, their potential to generate misinformation, often called the hallucination problem, poses a significant risk to their…

Computation and Language · Computer Science 2023-10-16 Sehyun Choi , Tianqing Fang , Zhaowei Wang , Yangqiu Song

MLLMs often generate outputs that are inconsistent with the visual content, a challenge known as hallucination. Previous methods focus on determining whether a generated output is hallucinated, without identifying which image region leads…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Zheng Lin , Zhenxing Niu , Zhibin Wang , Yinghui Xu

With the rapid development of large models in the field of artificial intelligence, how to enhance their application capabilities in handling complex problems in the field of scientific research remains a challenging problem to be solved.…

Artificial Intelligence · Computer Science 2025-01-27 Zhihua Duan , Jialin Wang

In this paper, we present HalluSearch, a multilingual pipeline designed to detect fabricated text spans in Large Language Model (LLM) outputs. Developed as part of Mu-SHROOM, the Multilingual Shared-task on Hallucinations and Related…

Computation and Language · Computer Science 2025-04-15 Mohamed A. Abdallah , Samhaa R. El-Beltagy

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

Large Language Models (LLMs) have become increasingly important in natural language processing, enabling advanced data analytics through natural language queries. However, these models often generate "hallucinations"-inaccurate or…

Computation and Language · Computer Science 2024-10-29 Mikhail Rumiantsau , Aliaksei Vertsel , Ilya Hrytsuk , Isaiah Ballah

Recently developed large language models have achieved remarkable success in generating fluent and coherent text. However, these models often tend to 'hallucinate' which critically hampers their reliability. In this work, we address this…

Computation and Language · Computer Science 2023-08-15 Neeraj Varshney , Wenlin Yao , Hongming Zhang , Jianshu Chen , Dong Yu

There emerges a promising trend of using large language models (LLMs) to generate code-like plans for complex inference tasks such as visual reasoning. This paradigm, known as LLM-based planning, provides flexibility in problem solving and…

Computation and Language · Computer Science 2023-08-22 Pengbo Hu , Ji Qi , Xingyu Li , Hong Li , Xinqi Wang , Bing Quan , Ruiyu Wang , Yi Zhou

Addressing the issue of hallucinations in large language models (LLMs) is a critical challenge. As the cognitive mechanisms of hallucination have been related to memory, here we explore hallucination for LLM that is enabled with explicit…

Computation and Language · Computer Science 2024-07-25 Georgios Kollias , Payel Das , Subhajit Chaudhury

Despite their outstanding capabilities, large language models (LLMs) are prone to hallucination and producing factually incorrect information. This challenge has spurred efforts in attributed text generation, which prompts LLMs to generate…

Computation and Language · Computer Science 2025-06-23 Junyi Li , Hwee Tou Ng

Large Language Models (LLMs) driven by In-Context Learning (ICL) have significantly improved the performance of text-to-SQL. Previous methods generally employ a two-stage reasoning framework, namely 1) schema linking and 2) logical…

Computation and Language · Computer Science 2024-05-27 Ge Qu , Jinyang Li , Bowen Li , Bowen Qin , Nan Huo , Chenhao Ma , Reynold Cheng

This project develops a self correcting framework for large language models (LLMs) that detects and mitigates hallucinations during multi-step reasoning. Rather than relying solely on final answer correctness, our approach leverages fine…

Artificial Intelligence · Computer Science 2025-11-21 Chelsea Zou , Yiheng Yao , Basant Khalil

Hallucinations in large language models (LLMs), defined as fluent yet incorrect or incoherent outputs, pose a significant challenge to the automatic generation of educational multiple-choice questions (MCQs). We identified four key…

Computation and Language · Computer Science 2026-01-22 Nicholas X. Wang , Aggelos K. Katsaggelos

Large Language Models (LLMs) have shown propensity to generate hallucinated outputs, i.e., texts that are factually incorrect or unsupported. Existing methods for alleviating hallucinations typically require costly human annotations to…

Computation and Language · Computer Science 2024-04-03 Yu Xia , Xu Liu , Tong Yu , Sungchul Kim , Ryan A. Rossi , Anup Rao , Tung Mai , Shuai Li

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
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