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arXiv 2505.02463cs.CL
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低资源语言中基于回译的数据增强:以英语与卢干达语为例

Data Augmentation With Back translation for Low Resource languages: A case of English and Luganda

Mbarara University of Science and Technology, Dept. of Information Technology(马拉拉大学科学与技术学院);Handong Global University, Dept. of Computer Science and Electrical Engineering(汉东全球大学计算机科学与电气工程学院)

Richard Kimera, Dongnyeong Heo, Daniela N. Rim, Heeyoul Choi

AI总结:

本文以英语-卢干达语为例,研究利用回译生成合成数据缓解低资源语言双语数据稀缺问题,通过迭代与增量回译技术提升神经机器翻译性能,超过先前基准10个以上BLEU分数。

摘要:

在本文中,我们探索了回译(Back Translation, BT)作为一种半监督技术的应用,以增强英语-卢干达语语言对的神经机器翻译(Neural Machine Translation, NMT)模型,专门应对低资源语言所面临的挑战。本研究旨在展示BT如何通过从单语语料库生成合成数据来缓解双语数据稀缺的问题。我们的方法包括利用公开可用数据和网络爬取数据开发定制NMT模型,并应用迭代回译和增量回译技术。我们策略性地在多个小规模数据集上选择用于增量回译的数据集,这是本方法的一个新颖之处。研究结果表明翻译性能有显著提升,英语-卢干达语语言对在所有翻译方向上的表现超过先前基准超过10个BLEU分数单位。此外,我们的评估纳入了SacreBLEU、ChrF2和TER等综合评估指标,从而对翻译质量提供了细致入微的理解。我们的研究结论证实了在策略性筛选数据集的情况下BT的有效性,建立了新的性能基准,并展示了BT在增强低资源语言NMT模型方面的潜力。

英文摘要:

In this paper,we explore the application of Back translation (BT) as a semi-supervised technique to enhance Neural Machine Translation(NMT) models for the English-Luganda language pair, specifically addressing the challenges faced by low-resource languages. The purpose of our study is to demonstrate how BT can mitigate the scarcity of bilingual data by generating synthetic data from monolingual corpora. Our methodology involves developing custom NMT models using both publicly available and web-crawled data, and applying Iterative and Incremental Back translation techniques. We strategically select datasets for incremental back translation across multiple small datasets, which is a novel element of our approach. The results of our study show significant improvements, with translation performance for the English-Luganda pair exceeding previous benchmarks by more than 10 BLEU score units across all translation directions. Additionally, our evaluation incorporates comprehensive assessment metrics such as SacreBLEU, ChrF2, and TER, providing a nuanced understanding of translation quality. The conclusion drawn from our research confirms the efficacy of BT when strategically curated datasets are utilized, establishing new performance benchmarks and demonstrating the potential of BT in enhancing NMT models for low-resource languages.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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