@inproceedings{perez-lares-2025-shouth,
    title = "Shouth {NLP} at {S}em{E}val-2025 Task 7: Multilingual Fact-Checking Retrieval Using Contrastive Learning",
    author = "P{\'e}rez, Juan  and
      Lares, Santiago",
    editor = "Rosenthal, Sara  and
      Ros{\'a}, Aiala  and
      Ghosh, Debanjan  and
      Zampieri, Marcos",
    booktitle = "Proceedings of the 19th International Workshop on Semantic Evaluation (SemEval-2025)",
    month = jul,
    year = "2025",
    address = "Vienna, Austria",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/corrections-2025-08/2025.semeval-1.295/",
    pages = "2265--2269",
    ISBN = "979-8-89176-273-2",
    abstract = "We present a multilingual fact-checking re-trieval system for the SemEval-2025 task ofmatching social media posts with relevant factchecks. Our approach utilizes a contrastivelearning framework built on the multilingual E5model architecture, fine-tuned on the provideddataset. The system achieves a Success@10score of 0.867 on the official test set, with per-formance variations between languages. Wedemonstrate that input prefixes and language-specific corpus filtering significantly improveretrieval performance. Our analysis reveals in-teresting patterns in cross-lingual transfer, withspecifically strong results on Malaysian andThai languages. We make our code public forfurther research and development."
}