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arXiv · 2502.03188

EuskañolDS: A Naturally Sourced Corpus for Basque-Spanish Code-Switching

Maite Heredia·Jeremy Barnes·Aitor Soroa
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Abstract

Code-switching (CS) remains a significant challenge in Natural Language Processing (NLP), mainly due a lack of relevant data. In the context of the contact between the Basque and Spanish languages in the north of the Iberian Peninsula, CS frequently occurs in both formal and informal spontaneous interactions. However, resources to analyse this phenomenon and support the development and evaluation of models capable of understanding and generating code-switched language for this language pair are almost non-existent. We introduce a first approach to develop a naturally sourced corpus for Basque-Spanish code-switching. Our methodology consists of identifying CS texts from previously available corpora using language identification models, which are then manually validated to obtain a reliable subset of CS instances. We present the properties of our corpus and make it available under the name EuskañolDS.

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Maite Heredia, Jeremy Barnes, Aitor Soroa. 2025-02-05. EuskañolDS: A Naturally Sourced Corpus for Basque-Spanish Code-Switching. https://arxiv.org/abs/2502.03188

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