arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.06202cs.CL
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一种面向中间资源语言的上下文化词嵌入的单语方法

A Monolingual Approach to Contextualized Word Embeddings for Mid-Resource Languages

Inria(法国国家信息与自动化研究所);Sorbonne Université(索邦大学)

Pedro Javier Ortiz Suárez, Laurent Romary, Benoît Sagot

摘要:

我们使用的多语言OSCAR语料库,通过语言分类,过滤和清洗,从公共爬行提取,训练单语上下文词嵌入(ELMo)的五个中间资源语言。然后,我们比较了基于OSCAR和基于维基百科的ELMo嵌入这些语言的词性标记和解析任务的性能。我们发现,尽管在基于Common-Crawl的OSCAR数据中存在噪声,但在OSCAR上训练的嵌入比在维基百科上训练的单语嵌入表现得更好。它们实际上等于或改进了所有五种语言的标记和解析的当前技术水平。特别是,它们还改进了基于多语言维基百科的上下文嵌入(多语言BERT),这几乎总是构成了以前的最新技术水平,从而表明更大,更多样化的语料库的好处超过了多语言嵌入架构的跨语言好处。

英文摘要:

We use the multilingual OSCAR corpus, extracted from Common Crawl via language classification, filtering and cleaning, to train monolingual contextualized word embeddings (ELMo) for five mid-resource languages. We then compare the performance of OSCAR-based and Wikipedia-based ELMo embeddings for these languages on the part-of-speech tagging and parsing tasks. We show that, despite the noise in the Common-Crawl-based OSCAR data, embeddings trained on OSCAR perform much better than monolingual embeddings trained on Wikipedia. They actually equal or improve the current state of the art in tagging and parsing for all five languages. In particular, they also improve over multilingual Wikipedia-based contextual embeddings (multilingual BERT), which almost always constitutes the previous state of the art, thereby showing that the benefit of a larger, more diverse corpus surpasses the cross-lingual benefit of multilingual embedding architectures.

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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