Elimination of Spurious Ambiguity in Transition-Based Dependency Parsing
  We present a novel technique to remove spurious ambiguity from transition systems for dependency parsing. Our technique chooses a canonical sequence of transition operations (computation) for a given dependency tree. Our technique can be applied to a large class of bottom-up transition systems, including for instance Nivre (2004) and Attardi (2006). 
Shay B. Cohen, Carlos G\'omez-Rodr\'iguez, Giorgio Satta
cs.CL cs.AI