Dependency-based empty category detection via phrase structure trees

@inproceedings{Xue2013DependencybasedEC,
  title={Dependency-based empty category detection via phrase structure trees},
  author={Nianwen Xue and Yaqin Yang},
  booktitle={NAACL 2013},
  year={2013}
}
We describe a novel approach to detecting empty categories (EC) as represented in dependency trees as well as a new metric for measuring EC detection accuracy. The new metric takes into account not only the position and type of an EC, but also the head it is a dependent of in a dependency tree. We also introduce a variety of new features that are more suited for this approach. Tested on a subset of the Chinese Treebank, our system improved significantly over the best previously reported results… CONTINUE READING

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