Sheffield's Submission to the AmericasNLP Shared Task on Machine Translation into Indigenous Languages

• URL: http://arxiv.org/abs/2306.09830v1
• Date: Fri, 16 Jun 2023 13:15:26 GMT
• Title: Sheffield's Submission to the AmericasNLP Shared Task on Machine Translation into Indigenous Languages
• Authors: Edward Gow-Smith, Danae S\'anchez Villegas
• Abstract summary: We describe the University of Sheffield's submission to the AmericasNLP 2023 Shared Task on Machine Translation into Indigenous languages. Our approach consists of extending, training, and ensembling different variations of NLLB-200. On the dev set, our best submission outperforms the baseline by 11% average chrF across all languages, with substantial improvements particularly for Aymara, Guarani and Quechua.
• Score: 4.251500966181852
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: In this paper we describe the University of Sheffield's submission to the AmericasNLP 2023 Shared Task on Machine Translation into Indigenous Languages which comprises the translation from Spanish to eleven indigenous languages. Our approach consists of extending, training, and ensembling different variations of NLLB-200. We use data provided by the organizers and data from various other sources such as constitutions, handbooks, news articles, and backtranslations generated from monolingual data. On the dev set, our best submission outperforms the baseline by 11% average chrF across all languages, with substantial improvements particularly for Aymara, Guarani and Quechua. On the test set, we achieve the highest average chrF of all the submissions, we rank first in four of the eleven languages, and at least one of our submissions ranks in the top 3 for all languages.

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