Using Categorial Grammar to Label Translation Rules

Jonathan Weese, Chris Callison-Burch, Adam Lopez

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


Adding syntactic labels to synchronous context-free translation rules can improve performance, but labeling with phrase structure constituents, as in GHKM (Galley et al., 2004), excludes potentially useful translation rules. SAMT (Zollmann and Venugopal, 2006) introduces heuristics to create new non-constituent labels, but these heuristics introduce many complex labels and tend to add rarely-applicable rules to the translation grammar. We introduce a labeling scheme based on categorial grammar, which allows syntactic labeling of many rules with a minimal, well-motivated label set. We show that our labeling scheme performs comparably to SAMT on an Urdu–English translation task, yet the label set is an order of magnitude smaller, and translation is twice as fast.
Original languageEnglish
Title of host publicationProceedings of the Seventh Workshop on Statistical Machine Translation
Place of PublicationMontréal, Canada
PublisherAssociation for Computational Linguistics
Number of pages10
Publication statusPublished - 1 Jun 2012

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