Improved Translation with Source Syntax Labels

Hieu Hoang, Philipp Koehn

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present a new translation model that include undecorated hierarchical-style phrase rules, decorated source-syntax rules, and partially decorated rules.

Results show an increase in translation performance of up to 0.8% BLEU for German--English translation when trained on the news-commentary corpus, using syntactic annotation from a source language parser. We also experimented with annotation from shallow taggers and found this increased performance by 0.5% BLEU.
Original languageEnglish
Title of host publicationProceedings of the Joint Fifth Workshop on Statistical Machine Translation and MetricsMATR
Place of PublicationStroudsburg, PA, USA
PublisherAssociation for Computational Linguistics
Number of pages9
Publication statusPublished - 2010


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