Computer Science > Computation and Language
[Submitted on 15 Sep 2021 (v1), last revised 19 May 2022 (this version, v2)]
Title:Cross-lingual Transfer of Monolingual Models
View PDFAbstract:Recent studies in zero-shot cross-lingual learning using multilingual models have falsified the previous hypothesis that shared vocabulary and joint pre-training are the keys to cross-lingual generalization. Inspired by this advancement, we introduce a cross-lingual transfer method for monolingual models based on domain adaptation. We study the effects of such transfer from four different languages to English. Our experimental results on GLUE show that the transferred models outperform the native English model independently of the source language. After probing the English linguistic knowledge encoded in the representations before and after transfer, we find that semantic information is retained from the source language, while syntactic information is learned during transfer. Additionally, the results of evaluating the transferred models in source language tasks reveal that their performance in the source domain deteriorates after transfer.
Submission history
From: Evangelia Gogoulou [view email][v1] Wed, 15 Sep 2021 15:00:53 UTC (580 KB)
[v2] Thu, 19 May 2022 15:02:20 UTC (879 KB)
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