Paper: Rediscovering Annotation Projection for Cross-Lingual Parser Induction

ACL ID C14-1175
Title Rediscovering Annotation Projection for Cross-Lingual Parser Induction
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2014
Authors

Previous research on annotation projection for parser induction across languages showed only limited success and often required substantial language-specific post-processing to fix inconsis- tencies and to lift the performance onto a useful level. Model transfer was introduced as another quite successful alternative and much research has been devoted to this paradigm recently. In this paper, we revisit annotation projection and show that the previously reported results are mainly spoiled by the flaws of evaluation with incompatible annotation schemes. Lexicalized parsers created on projected data are especially harmed by such discrepancies. However, recently de- veloped cross-lingually harmonized annotation schemes remove this obstacle and restore the abilities of syntactic annotation proj...