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Unknown Script: Impact of Script on Cross-Lingual Transfer

Cross-lingual transfer has become an effective way of transferring knowledge between languages. In this paper, we explore an often overlooked aspect in this domain: the influence of the source language of a language model on language transfer performance. We consider a case where the target language...

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Bibliographic Details
Published in:arXiv.org 2024-05
Main Authors: Wondimagegnhue Tsegaye Tufa, Markov, Ilia, Vossen, Piek
Format: Article
Language:English
Online Access:Get full text
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Summary:Cross-lingual transfer has become an effective way of transferring knowledge between languages. In this paper, we explore an often overlooked aspect in this domain: the influence of the source language of a language model on language transfer performance. We consider a case where the target language and its script are not part of the pre-trained model. We conduct a series of experiments on monolingual and multilingual models that are pre-trained on different tokenization methods to determine factors that affect cross-lingual transfer to a new language with a unique script. Our findings reveal the importance of the tokenizer as a stronger factor than the shared script, language similarity, and model size.
ISSN:2331-8422