Dependency Parser

action name	depParse
resources required	Tratz-Hovy format grammar
properties	DepParser.model.fileName DepParser.transformations
annotations required	tagger (Penn part-of-speech tags)
annotations added	none: dependency relations stored in relations property of a Document

This Jet action provides an interface to the Tratz-Hovy USC/ISI dependency parser, which uses the easy-first parsing algorithm developed by Yoav Goldberg. The resulting dependency relations are stored in the relations property of a Jet Document.

If DepParser.transformations is not null, 3 transformations of the tree are performed after the parse:

verb chains are reversed so the main (final) verb is on top
passives are converted to active clauses
prepositions are incorporated into prep arc labels