def _oracle(self, forest):
sc, parseval, tr, edgelist = forest_oracle(forest, forest.goldtree)
forest.oracle_tree = tr
forest.oracle_fvector = Hyperedge.deriv2fvector(edgelist)
if Decoder.MAX_NUM_BRACKETS < 0:
forest.oracle_size_ratio = 1
else:
forest.oracle_size_ratio = len(tr.all_label_spans()) / Decoder.MAX_NUM_BRACKETS
def recover_oracle(self):
'''oracle is already stored implicitly in the forest
returns best_score, best_parseval, best_tree, edgelist
'''
edgelist = self.root.get_oracle_edgelist()
fv = Hyperedge.deriv2fvector(edgelist)
tr = Hyperedge.deriv2tree(edgelist)
bleu_p1 = self.bleu.rescore(tr)
return bleu_p1, tr, fv, edgelist
def extract_oracle(forest):
"""oracle is already stored implicitly in the forest
returns best_score, best_parseval, best_tree, edgelist
"""
global implicit_oracle
implicit_oracle = True
edgelist = get_edgelist(forest.root)
fv = Hyperedge.deriv2fvector(edgelist)
tr = Hyperedge.deriv2tree(edgelist)
return fv[0], Parseval(), tr, edgelist