from __future__ import unicode_literals import pytest from ...vocab import Vocab from ...syntax.ner import BiluoPushDown from ...gold import GoldParse from ...tokens import Doc @pytest.fixture def vocab(): return Vocab() @pytest.fixture def doc(vocab): return Doc(vocab, words=['Casey', 'went', 'to', 'New', 'York', '.']) @pytest.fixture def entity_annots(doc): casey = doc[0:1] ny = doc[3:5] return [(casey.start_char, casey.end_char, 'PERSON'), (ny.start_char, ny.end_char, 'GPE')] @pytest.fixture def entity_types(entity_annots): return sorted(set([label for (s, e, label) in entity_annots])) @pytest.fixture def tsys(vocab, entity_types): actions = BiluoPushDown.get_actions(entity_types=entity_types) return BiluoPushDown(vocab.strings, actions) def test_get_oracle_moves(tsys, doc, entity_annots): gold = GoldParse(doc, entities=entity_annots) tsys.preprocess_gold(gold) act_classes = tsys.get_oracle_sequence(doc, gold) names = [tsys.get_class_name(act) for act in act_classes] assert names == ['U-PERSON', 'O', 'O', 'B-GPE', 'L-GPE', 'O'] def test_get_oracle_moves_negative_entities(tsys, doc, entity_annots): entity_annots = [(s, e, '!' + label) for s, e, label in entity_annots] gold = GoldParse(doc, entities=entity_annots) for i, tag in enumerate(gold.ner): if tag == 'L-!GPE': gold.ner[i] = '-' tsys.preprocess_gold(gold) act_classes = tsys.get_oracle_sequence(doc, gold) names = [tsys.get_class_name(act) for act in act_classes] def test_get_oracle_moves_negative_entities2(tsys, vocab): doc = Doc(vocab, words=['A', 'B', 'C', 'D']) gold = GoldParse(doc, entities=[]) gold.ner = ['B-!PERSON', 'L-!PERSON', 'B-!PERSON', 'L-!PERSON'] tsys.preprocess_gold(gold) act_classes = tsys.get_oracle_sequence(doc, gold) names = [tsys.get_class_name(act) for act in act_classes] def test_get_oracle_moves_negative_O(tsys, vocab): doc = Doc(vocab, words=['A', 'B', 'C', 'D']) gold = GoldParse(doc, entities=[]) gold.ner = ['O', '!O', 'O', '!O'] tsys.preprocess_gold(gold) act_classes = tsys.get_oracle_sequence(doc, gold) names = [tsys.get_class_name(act) for act in act_classes]