arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.12501cs.CL
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音译是否有助于多语言语言建模?

Does Transliteration Help Multilingual Language Modeling?

Pennsylvania State University(宾夕法尼亚州立大学);North South University(北南大学)

Ibraheem Muhammad Moosa, Mahmud Elahi Akhter, Ashfia Binte Habib

AI总结:

该研究实证评估了音译对多语言语言模型的影响,发现将不同书写系统的密切相关语言音译为通用系统可提升低资源语言的下游任务表现,并增强跨语言表示相似度。

摘要:

书写系统的多样性通过减少密切相关语言之间的词汇重叠,对多语言语言模型(MLLM)构成了挑战。因此,将使用不同书写系统的密切相关语言音译为通用书写系统,可能会提升MLLM的下游任务表现。我们在该背景下实证测量了音译对MLLM的影响。我们特别关注世界上书写系统多样性最高的印度语系语言,并在IndicGLUE基准上评估了我们的模型。我们执行Mann-Whitney U检验,以严格验证音译的影响是否显著。我们发现,音译使低资源语言受益,同时不会对相对高资源的语言产生负面影响。我们还利用FLORES-101数据集中的平行句子,通过中心核对齐测量了模型的跨语言表示相似度。我们发现,对于不同语言的平行句子,基于音译的模型学习到的句子表示更为相似。

英文摘要:

Script diversity presents a challenge to Multilingual Language Models (MLLM) by reducing lexical overlap among closely related languages. Therefore, transliterating closely related languages that use different writing scripts to a common script may improve the downstream task performance of MLLMs. We empirically measure the effect of transliteration on MLLMs in this context. We specifically focus on the Indic languages, which have the highest script diversity in the world, and we evaluate our models on the IndicGLUE benchmark. We perform the Mann-Whitney U test to rigorously verify whether the effect of transliteration is significant or not. We find that transliteration benefits the low-resource languages without negatively affecting the comparatively high-resource languages. We also measure the cross-lingual representation similarity of the models using centered kernel alignment on parallel sentences from the FLORES-101 dataset. We find that for parallel sentences across different languages, the transliteration-based model learns sentence representations that are more similar.

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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