Clustering Words by Syntactic Similarity Improves Dependency Parsing of Predicate-Argument Structures (bibtex)
by Sagae, Kenji and Gordon, Andrew S.
Abstract:
We present an approach for deriving syntactic word clusters from parsed text, grouping words according to their unlexicalized syntactic contexts. We then explore the use of these syntactic clusters in leveraging a large corpus of trees generated by a high-accuracy parser to improve the accuracy of another parser based on a different formalism for representing a different level of sentence structure. In our experiments, we use phrase-structure trees to produce syntactic word clusters that are used by a predicate-argument dependency parser, significantly improving its accuracy.
Reference:
Clustering Words by Syntactic Similarity Improves Dependency Parsing of Predicate-Argument Structures (Sagae, Kenji and Gordon, Andrew S.), In International Conference on Parsing Technologies (IWPT-09), 2009.
Bibtex Entry:
@inproceedings{sagae_clustering_2009,
	address = {Paris, France},
	title = {Clustering {Words} by {Syntactic} {Similarity} {Improves} {Dependency} {Parsing} of {Predicate}-{Argument} {Structures}},
	url = {http://ict.usc.edu/pubs/Clustering%20Words%20by%20Syntactic%20Similarity%20Improves%20Dependency%20Parsing%20of%20Predicate-Argument%20Structures.pdf},
	abstract = {We present an approach for deriving syntactic word clusters from parsed text, grouping words according to their unlexicalized syntactic contexts. We then explore the use of these syntactic clusters in leveraging a large corpus of trees generated by a high-accuracy parser to improve the accuracy of another parser based on a different formalism for representing a different level of sentence structure. In our experiments, we use phrase-structure trees to produce syntactic word clusters that are used by a predicate-argument dependency parser, significantly improving its accuracy.},
	booktitle = {International {Conference} on {Parsing} {Technologies} ({IWPT}-09)},
	author = {Sagae, Kenji and Gordon, Andrew S.},
	month = oct,
	year = {2009},
	keywords = {The Narrative Group, Virtual Humans}
}
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