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EMNLP
2011

Multi-Source Transfer of Delexicalized Dependency Parsers

9 years 2 months ago
Multi-Source Transfer of Delexicalized Dependency Parsers
We present a simple method for transferring dependency parsers from source languages with labeled training data to target languages without labeled training data. We first demonstrate that delexicalized parsers can be directly transferred between languages, producing significantly higher accuracies than unsupervised parsers. We then use a constraint driven learning algorithm where constraints are drawn from parallel corpora to project the final parser. Unlike previous work on projecting syntactic resources, we show that simple methods for introducing multiple source languages can significantly improve the overall quality of the resulting parsers. The projected parsers from our system result in state-of-theart performance when compared to previously studied unsupervised and projected parsing systems across eight different languages.
Ryan T. McDonald, Slav Petrov, Keith Hall
Added 20 Dec 2011
Updated 20 Dec 2011
Type Journal
Year 2011
Where EMNLP
Authors Ryan T. McDonald, Slav Petrov, Keith Hall
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