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Related papers: SHROOM-INDElab at SemEval-2024 Task 6: Zero- and F…

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In this paper, we present our team's submissions for SemEval-2024 Task-6 - SHROOM, a Shared-task on Hallucinations and Related Observable Overgeneration Mistakes. The participants were asked to perform binary classification to identify…

Computation and Language · Computer Science 2024-04-15 Natalia Grigoriadou , Maria Lymperaiou , Giorgos Filandrianos , Giorgos Stamou

This paper mainly describes a unified system for hallucination detection of LLMs, which wins the second prize in the model-agnostic track of the SemEval-2024 Task 6, and also achieves considerable results in the model-aware track. This task…

Computation and Language · Computer Science 2024-02-21 Chengcheng Wei , Ze Chen , Songtan Fang , Jiarong He , Max Gao

This paper presents the results of the SHROOM, a shared task focused on detecting hallucinations: outputs from natural language generation (NLG) systems that are fluent, yet inaccurate. Such cases of overgeneration put in jeopardy many NLG…

This paper describes our submission for SemEval-2025 Task 3: Mu-SHROOM, the Multilingual Shared-task on Hallucinations and Related Observable Overgeneration Mistakes. The task involves detecting hallucinated spans in text generated by…

Computation and Language · Computer Science 2025-05-28 Baraa Hikal , Ahmed Nasreldin , Ali Hamdi

Hallucinations pose a significant challenge for large language models when answering knowledge-intensive queries. As LLMs become more widely adopted, it is crucial not only to detect if hallucinations occur but also to pinpoint exactly…

Computation and Language · Computer Science 2025-05-07 Sicong Huang , Jincheng He , Shiyuan Huang , Karthik Raja Anandan , Arkajyoti Chakraborty , Ian Lane

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

The detection of hallucinations in multilingual scientific text generated by Large Language Models (LLMs) presents significant challenges for reliable AI systems. This paper describes our submission to the SHROOM-CAP 2025 shared task on…

Computation and Language · Computer Science 2025-11-25 Harsh Rathva , Pruthwik Mishra , Shrikant Malviya

In this paper, we present our novel systems developed for the SemEval-2024 hallucination detection task. Our investigation spans a range of strategies to compare model predictions with reference standards, encompassing diverse baselines,…

Computation and Language · Computer Science 2024-04-10 Elisei Rykov , Yana Shishkina , Kseniia Petrushina , Kseniia Titova , Sergey Petrakov , Alexander Panchenko

Language models, particularly generative models, are susceptible to hallucinations, generating outputs that contradict factual knowledge or the source text. This study explores methods for detecting hallucinations in three SemEval-2024 Task…

Hallucination detection in text generation remains an ongoing struggle for natural language processing (NLP) systems, frequently resulting in unreliable outputs in applications such as machine translation and definition modeling. Existing…

Computation and Language · Computer Science 2025-01-29 Baraa Hikal , Ahmed Nasreldin , Ali Hamdi , Ammar Mohammed

We present the Mu-SHROOM shared task which is focused on detecting hallucinations and other overgeneration mistakes in the output of instruction-tuned large language models (LLMs). Mu-SHROOM addresses general-purpose LLMs in 14 languages,…

Identification of hallucination spans in black-box language model generated text is essential for applications in the real world. A recent attempt at this direction is SemEval-2025 Task 3, Mu-SHROOM-a Multilingual Shared Task on…

Computation and Language · Computer Science 2025-05-26 Saketh Reddy Vemula , Parameswari Krishnamurthy

In Natural Language Generation (NLG), contemporary Large Language Models (LLMs) face several challenges, such as generating fluent yet inaccurate outputs and reliance on fluency-centric metrics. This often leads to neural networks…

Computation and Language · Computer Science 2025-12-19 Federico Borra , Claudio Savelli , Giacomo Rosso , Alkis Koudounas , Flavio Giobergia

Detecting spans of hallucination in LLM-generated answers is crucial for improving factual consistency. This paper presents a span-level hallucination detection framework for the SemEval-2025 Shared Task, focusing on English and Arabic…

Computation and Language · Computer Science 2025-04-29 Passant Elchafei , Mervet Abu-Elkheir

Hallucinations are one of the major problems of LLMs, hindering their trustworthiness and deployment to wider use cases. However, most of the research on hallucinations focuses on English data, neglecting the multilingual nature of LLMs.…

Computation and Language · Computer Science 2025-07-02 Miriam Anschütz , Ekaterina Gikalo , Niklas Herbster , Georg Groh

Zero-shot learning (ZSL) aims to recognize unseen classes by aligning images with intermediate class semantics, like human-annotated concepts or class definitions. An emerging alternative leverages Large-scale Language Models (LLMs) to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Zihan Ye , Shreyank N Gowda , Shiming Chen , Yaochu Jin , Kaizhu Huang , Xiaobo Jin

This paper presents our findings of the Multilingual Shared Task on Hallucinations and Related Observable Overgeneration Mistakes, MU-SHROOM, which focuses on identifying hallucinations and related overgeneration errors in large language…

This work introduces a novel methodology for the automatic detection of hallucinations generated during large language model (LLM) inference. The proposed approach is based on a systematic taxonomy and controlled reproduction of diverse…

Computation and Language · Computer Science 2025-10-08 Maksym Zavhorodnii , Dmytro Dehtiarov , Anna Konovalenko

We present the system developed by the Central China Normal University (CCNU) team for the Mu-SHROOM shared task, which focuses on identifying hallucinations in question-answering systems across 14 different languages. Our approach…

Computation and Language · Computer Science 2025-05-20 Xu Liu , Guanyi Chen

Despite the many advances of Large Language Models (LLMs) and their unprecedented rapid evolution, their impact and integration into every facet of our daily lives is limited due to various reasons. One critical factor hindering their…

Computation and Language · Computer Science 2024-08-20 Yakir Yehuda , Itzik Malkiel , Oren Barkan , Jonathan Weill , Royi Ronen , Noam Koenigstein
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