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Computer Science > Computation and Language

arXiv:1801.03615 (cs)
[Submitted on 11 Jan 2018]

Title:Improved English to Russian Translation by Neural Suffix Prediction

Authors:Kai Song, Yue Zhang, Min Zhang, Weihua Luo
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Abstract:Neural machine translation (NMT) suffers a performance deficiency when a limited vocabulary fails to cover the source or target side adequately, which happens frequently when dealing with morphologically rich languages. To address this problem, previous work focused on adjusting translation granularity or expanding the vocabulary size. However, morphological information is relatively under-considered in NMT architectures, which may further improve translation quality. We propose a novel method, which can not only reduce data sparsity but also model morphology through a simple but effective mechanism. By predicting the stem and suffix separately during decoding, our system achieves an improvement of up to 1.98 BLEU compared with previous work on English to Russian translation. Our method is orthogonal to different NMT architectures and stably gains improvements on various domains.
Comments: 8 pages, 3 figures, 5 tables
Subjects: Computation and Language (cs.CL)
Cite as: arXiv:1801.03615 [cs.CL]
  (or arXiv:1801.03615v1 [cs.CL] for this version)
  https://doi.org/10.48550/arXiv.1801.03615

Submission history

From: Kai Song [view email]
[v1] Thu, 11 Jan 2018 02:18:06 UTC (1,228 KB)
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