mirror of https://github.com/explosion/spaCy.git
224 lines
7.6 KiB
Python
224 lines
7.6 KiB
Python
import pytest
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from spacy.lang.en import English
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from ..util import get_doc, apply_transition_sequence, make_tempdir
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from ... import util
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from ...gold import Example
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TRAIN_DATA = [
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(
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"They trade mortgage-backed securities.",
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{
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"heads": [1, 1, 4, 4, 5, 1, 1],
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"deps": ["nsubj", "ROOT", "compound", "punct", "nmod", "dobj", "punct"],
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},
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),
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(
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"I like London and Berlin.",
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{
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"heads": [1, 1, 1, 2, 2, 1],
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"deps": ["nsubj", "ROOT", "dobj", "cc", "conj", "punct"],
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},
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),
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]
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def test_parser_root(en_tokenizer):
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text = "i don't have other assistance"
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heads = [3, 2, 1, 0, 1, -2]
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deps = ["nsubj", "aux", "neg", "ROOT", "amod", "dobj"]
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tokens = en_tokenizer(text)
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doc = get_doc(tokens.vocab, words=[t.text for t in tokens], heads=heads, deps=deps)
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for t in doc:
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assert t.dep != 0, t.text
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@pytest.mark.skip(
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reason="The step_through API was removed (but should be brought back)"
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)
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@pytest.mark.parametrize("text", ["Hello"])
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def test_parser_parse_one_word_sentence(en_tokenizer, en_parser, text):
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tokens = en_tokenizer(text)
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doc = get_doc(
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tokens.vocab, words=[t.text for t in tokens], heads=[0], deps=["ROOT"]
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)
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assert len(doc) == 1
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with en_parser.step_through(doc) as _: # noqa: F841
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pass
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assert doc[0].dep != 0
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@pytest.mark.skip(
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reason="The step_through API was removed (but should be brought back)"
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)
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def test_parser_initial(en_tokenizer, en_parser):
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text = "I ate the pizza with anchovies."
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# heads = [1, 0, 1, -2, -3, -1, -5]
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transition = ["L-nsubj", "S", "L-det"]
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tokens = en_tokenizer(text)
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apply_transition_sequence(en_parser, tokens, transition)
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assert tokens[0].head.i == 1
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assert tokens[1].head.i == 1
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assert tokens[2].head.i == 3
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assert tokens[3].head.i == 3
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def test_parser_parse_subtrees(en_tokenizer, en_parser):
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text = "The four wheels on the bus turned quickly"
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heads = [2, 1, 4, -1, 1, -2, 0, -1]
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tokens = en_tokenizer(text)
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doc = get_doc(tokens.vocab, words=[t.text for t in tokens], heads=heads)
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assert len(list(doc[2].lefts)) == 2
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assert len(list(doc[2].rights)) == 1
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assert len(list(doc[2].children)) == 3
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assert len(list(doc[5].lefts)) == 1
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assert len(list(doc[5].rights)) == 0
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assert len(list(doc[5].children)) == 1
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assert len(list(doc[2].subtree)) == 6
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def test_parser_merge_pp(en_tokenizer):
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text = "A phrase with another phrase occurs"
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heads = [1, 4, -1, 1, -2, 0]
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deps = ["det", "nsubj", "prep", "det", "pobj", "ROOT"]
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tags = ["DT", "NN", "IN", "DT", "NN", "VBZ"]
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tokens = en_tokenizer(text)
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doc = get_doc(
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tokens.vocab, words=[t.text for t in tokens], deps=deps, heads=heads, tags=tags
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)
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with doc.retokenize() as retokenizer:
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for np in doc.noun_chunks:
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retokenizer.merge(np, attrs={"lemma": np.lemma_})
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assert doc[0].text == "A phrase"
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assert doc[1].text == "with"
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assert doc[2].text == "another phrase"
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assert doc[3].text == "occurs"
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@pytest.mark.skip(
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reason="The step_through API was removed (but should be brought back)"
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)
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def test_parser_arc_eager_finalize_state(en_tokenizer, en_parser):
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text = "a b c d e"
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# right branching
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transition = ["R-nsubj", "D", "R-nsubj", "R-nsubj", "D", "R-ROOT"]
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tokens = en_tokenizer(text)
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apply_transition_sequence(en_parser, tokens, transition)
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assert tokens[0].n_lefts == 0
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assert tokens[0].n_rights == 2
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assert tokens[0].left_edge.i == 0
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assert tokens[0].right_edge.i == 4
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assert tokens[0].head.i == 0
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assert tokens[1].n_lefts == 0
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assert tokens[1].n_rights == 0
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assert tokens[1].left_edge.i == 1
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assert tokens[1].right_edge.i == 1
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assert tokens[1].head.i == 0
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assert tokens[2].n_lefts == 0
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assert tokens[2].n_rights == 2
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assert tokens[2].left_edge.i == 2
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assert tokens[2].right_edge.i == 4
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assert tokens[2].head.i == 0
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assert tokens[3].n_lefts == 0
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assert tokens[3].n_rights == 0
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assert tokens[3].left_edge.i == 3
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assert tokens[3].right_edge.i == 3
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assert tokens[3].head.i == 2
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assert tokens[4].n_lefts == 0
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assert tokens[4].n_rights == 0
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assert tokens[4].left_edge.i == 4
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assert tokens[4].right_edge.i == 4
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assert tokens[4].head.i == 2
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# left branching
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transition = ["S", "S", "S", "L-nsubj", "L-nsubj", "L-nsubj", "L-nsubj"]
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tokens = en_tokenizer(text)
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apply_transition_sequence(en_parser, tokens, transition)
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assert tokens[0].n_lefts == 0
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assert tokens[0].n_rights == 0
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assert tokens[0].left_edge.i == 0
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assert tokens[0].right_edge.i == 0
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assert tokens[0].head.i == 4
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assert tokens[1].n_lefts == 0
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assert tokens[1].n_rights == 0
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assert tokens[1].left_edge.i == 1
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assert tokens[1].right_edge.i == 1
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assert tokens[1].head.i == 4
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assert tokens[2].n_lefts == 0
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assert tokens[2].n_rights == 0
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assert tokens[2].left_edge.i == 2
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assert tokens[2].right_edge.i == 2
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assert tokens[2].head.i == 4
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assert tokens[3].n_lefts == 0
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assert tokens[3].n_rights == 0
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assert tokens[3].left_edge.i == 3
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assert tokens[3].right_edge.i == 3
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assert tokens[3].head.i == 4
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assert tokens[4].n_lefts == 4
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assert tokens[4].n_rights == 0
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assert tokens[4].left_edge.i == 0
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assert tokens[4].right_edge.i == 4
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assert tokens[4].head.i == 4
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def test_parser_set_sent_starts(en_vocab):
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# fmt: off
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words = ['Ein', 'Satz', '.', 'Außerdem', 'ist', 'Zimmer', 'davon', 'überzeugt', ',', 'dass', 'auch', 'epige-', '\n', 'netische', 'Mechanismen', 'eine', 'Rolle', 'spielen', ',', 'also', 'Vorgänge', ',', 'die', '\n', 'sich', 'darauf', 'auswirken', ',', 'welche', 'Gene', 'abgelesen', 'werden', 'und', '\n', 'welche', 'nicht', '.', '\n']
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heads = [1, 0, -1, 27, 0, -1, 1, -3, -1, 8, 4, 3, -1, 1, 3, 1, 1, -11, -1, 1, -9, -1, 4, -1, 2, 1, -6, -1, 1, 2, 1, -6, -1, -1, -17, -31, -32, -1]
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deps = ['nk', 'ROOT', 'punct', 'mo', 'ROOT', 'sb', 'op', 'pd', 'punct', 'cp', 'mo', 'nk', '', 'nk', 'sb', 'nk', 'oa', 're', 'punct', 'mo', 'app', 'punct', 'sb', '', 'oa', 'op', 'rc', 'punct', 'nk', 'sb', 'oc', 're', 'cd', '', 'oa', 'ng', 'punct', '']
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# fmt: on
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doc = get_doc(en_vocab, words=words, deps=deps, heads=heads)
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for i in range(len(words)):
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if i == 0 or i == 3:
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assert doc[i].is_sent_start is True
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else:
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assert doc[i].is_sent_start is None
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for sent in doc.sents:
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for token in sent:
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assert token.head in sent
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def test_overfitting_IO():
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# Simple test to try and quickly overfit the dependency parser - ensuring the ML models work correctly
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nlp = English()
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parser = nlp.add_pipe("parser")
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train_examples = []
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for text, annotations in TRAIN_DATA:
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train_examples.append(Example.from_dict(nlp.make_doc(text), annotations))
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for dep in annotations.get("deps", []):
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parser.add_label(dep)
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optimizer = nlp.begin_training()
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for i in range(100):
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losses = {}
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nlp.update(train_examples, sgd=optimizer, losses=losses)
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assert losses["parser"] < 0.0001
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# test the trained model
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test_text = "I like securities."
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doc = nlp(test_text)
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assert doc[0].dep_ is "nsubj"
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assert doc[2].dep_ is "dobj"
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assert doc[3].dep_ is "punct"
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# Also test the results are still the same after IO
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with make_tempdir() as tmp_dir:
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nlp.to_disk(tmp_dir)
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nlp2 = util.load_model_from_path(tmp_dir)
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doc2 = nlp2(test_text)
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assert doc2[0].dep_ is "nsubj"
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assert doc2[2].dep_ is "dobj"
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assert doc2[3].dep_ is "punct"
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