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Autores principales: Sterner, Igor, Teufel, Simone
Formato: Preprint
Publicado: 2025
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Acceso en línea:https://arxiv.org/abs/2506.01840
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author Sterner, Igor
Teufel, Simone
author_facet Sterner, Igor
Teufel, Simone
contents There is a lack of an evaluation methodology that estimates the extent to which large language models (LLMs) use code-switching (CS) in the same way as bilinguals. Existing methods do not have wide language coverage, fail to account for the diverse range of CS phenomena, or do not scale. We propose an intervention based on minimal pairs of CS. Each minimal pair contains one naturally occurring CS sentence and one minimally manipulated variant. We collect up to 1,000 such pairs each for 11 language pairs. Our human experiments show that, for every language pair, bilinguals consistently prefer the naturally occurring CS sentence. Meanwhile our experiments with current LLMs show that the larger the model, the more consistently it assigns higher probability to the naturally occurring CS sentence than to the variant. In accordance with theoretical claims, the largest probability differences arise in those pairs where the manipulated material consisted of closed-class words.
format Preprint
id arxiv_https___arxiv_org_abs_2506_01840
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Minimal Pair-Based Evaluation of Code-Switching
Sterner, Igor
Teufel, Simone
Computation and Language
There is a lack of an evaluation methodology that estimates the extent to which large language models (LLMs) use code-switching (CS) in the same way as bilinguals. Existing methods do not have wide language coverage, fail to account for the diverse range of CS phenomena, or do not scale. We propose an intervention based on minimal pairs of CS. Each minimal pair contains one naturally occurring CS sentence and one minimally manipulated variant. We collect up to 1,000 such pairs each for 11 language pairs. Our human experiments show that, for every language pair, bilinguals consistently prefer the naturally occurring CS sentence. Meanwhile our experiments with current LLMs show that the larger the model, the more consistently it assigns higher probability to the naturally occurring CS sentence than to the variant. In accordance with theoretical claims, the largest probability differences arise in those pairs where the manipulated material consisted of closed-class words.
title Minimal Pair-Based Evaluation of Code-Switching
topic Computation and Language
url https://arxiv.org/abs/2506.01840