... forests. For completeness, we assume an extended formof the transition system where transitions take theform Σ0, Σ1, B, A, p, where p is a flag takingvalues in {0, 1} which equals 0 for ... graph G ∈ G for w, there is a transition sequence (cs(w), c1, . . . , cf) such that g(cf) = G.A transition system that is sound and complete for G is said to be correct for G.Note that, ... Oracles for prac-tical parsers can be obtained by training classifierson treebank data (Nivre et al., 2004).4.2 A Transition System for PlanarStructuresA correct transition system for the...