Syntax as a Rosetta Stone: Universal Dependencies for In-Context Coptic Translation

Fuente: arXiv
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Autores principales: Purushothama, Abhishek, Thronson, Emma, Guo, Alexia, Zeldes, Amir
Formato: Preprint
Publicado: 2026
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author Purushothama, Abhishek
Thronson, Emma
Guo, Alexia
Zeldes, Amir
author_facet Purushothama, Abhishek
Thronson, Emma
Guo, Alexia
Zeldes, Amir
contents Low-resource machine translation requires methods that differ from those used for high-resource languages. This paper proposes a novel in-context learning approach to support low-resource machine translation of the Coptic language to English, with syntactic augmentation from Universal Dependencies parses of input sentences. Building on existing work using bilingual dictionaries to support inference for vocabulary items, we add several representations of syntactic analyses to our inputs , specifically exploring the inclusion of raw parser outputs, verbalizations of parses in plain English, and targeted instructions of difficult constructions identified in sub-trees and how they can be translated. Our results show that while syntactic information alone is not as useful as dictionary-based glosses, combining retrieved dictionary items with syntactic information achieves significant gains across model sizes, achieving new state-of-the-art translation results for Coptic.
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id arxiv_https___arxiv_org_abs_2604_18758
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publishDate 2026
record_format arxiv
spellingShingle Syntax as a Rosetta Stone: Universal Dependencies for In-Context Coptic Translation
Purushothama, Abhishek
Thronson, Emma
Guo, Alexia
Zeldes, Amir
Computation and Language
Low-resource machine translation requires methods that differ from those used for high-resource languages. This paper proposes a novel in-context learning approach to support low-resource machine translation of the Coptic language to English, with syntactic augmentation from Universal Dependencies parses of input sentences. Building on existing work using bilingual dictionaries to support inference for vocabulary items, we add several representations of syntactic analyses to our inputs , specifically exploring the inclusion of raw parser outputs, verbalizations of parses in plain English, and targeted instructions of difficult constructions identified in sub-trees and how they can be translated. Our results show that while syntactic information alone is not as useful as dictionary-based glosses, combining retrieved dictionary items with syntactic information achieves significant gains across model sizes, achieving new state-of-the-art translation results for Coptic.
title Syntax as a Rosetta Stone: Universal Dependencies for In-Context Coptic Translation
topic Computation and Language
url https://arxiv.org/abs/2604.18758