Nikolaos Spanos
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2025
AILS-NTUA at SemEval-2025 Task 3: Leveraging Large Language Models and Translation Strategies for Multilingual Hallucination Detection
Dimitra Karkani
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Maria Lymperaiou
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George Filandrianos
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Nikolaos Spanos
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Athanasios Voulodimos
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Giorgos Stamou
Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025)
Multilingual hallucination detection stands as an underexplored challenge, which the Mu-SHROOM shared task seeks to address. In this work, we propose an efficient, training-free LLM prompting strategy that enhances detection by translating multilingual text spans into English. Our approach achieves competitive rankings across multiple languages, securing two first positions in low-resource languages. The consistency of our results highlights the effectiveness of our translation strategy for hallucination detection, demonstrating its applicability regardless of the source language.