Interpolated Backoff for Factored Translation Models

Philipp Koehn, Barry Haddow


Abstract
We propose interpolated backoff methods to strike the balance between traditional surface form translation models and factored models that decompose translation into lemma and morphological feature mapping steps. We show that this approach improves translation quality by 0.5 BLEU (German–English) over phrase-based models, due to the better translation of rare nouns and adjectives.
Anthology ID:
2012.amta-papers.9
Volume:
Proceedings of the 10th Conference of the Association for Machine Translation in the Americas: Research Papers
Month:
October 28-November 1
Year:
2012
Address:
San Diego, California, USA
Venue:
AMTA
SIG:
Publisher:
Association for Machine Translation in the Americas
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URL:
https://aclanthology.org/2012.amta-papers.9
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Cite (ACL):
Philipp Koehn and Barry Haddow. 2012. Interpolated Backoff for Factored Translation Models. In Proceedings of the 10th Conference of the Association for Machine Translation in the Americas: Research Papers, San Diego, California, USA. Association for Machine Translation in the Americas.
Cite (Informal):
Interpolated Backoff for Factored Translation Models (Koehn & Haddow, AMTA 2012)
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PDF:
https://preview.aclanthology.org/update-css-js/2012.amta-papers.9.pdf