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79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
from __future__ import unicode_literals
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import os
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import random
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import contextlib
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import shutil
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import pytest
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import tempfile
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from pathlib import Path
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import pathlib
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from ...gold import GoldParse
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from ...pipeline import EntityRecognizer
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from ...language import Language
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try:
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unicode
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except NameError:
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unicode = str
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@pytest.fixture
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def train_data():
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return [
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["hey",[]],
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["howdy",[]],
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["hey there",[]],
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["hello",[]],
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["hi",[]],
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["i'm looking for a place to eat",[]],
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["i'm looking for a place in the north of town",[[31,36,"location"]]],
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["show me chinese restaurants",[[8,15,"cuisine"]]],
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["show me chines restaurants",[[8,14,"cuisine"]]],
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]
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@contextlib.contextmanager
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def temp_save_model(model):
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model_dir = Path(tempfile.mkdtemp())
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model.save_to_directory(model_dir)
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yield model_dir
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shutil.rmtree(model_dir.as_posix())
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def test_issue999(train_data):
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'''Test that adding entities and resuming training works passably OK.
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There are two issues here:
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1) We have to readd labels. This isn't very nice.
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2) There's no way to set the learning rate for the weight update, so we
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end up out-of-scale, causing it to learn too fast.
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'''
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nlp = Language(path=None, entity=False, tagger=False, parser=False)
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nlp.entity = EntityRecognizer(nlp.vocab, features=Language.Defaults.entity_features)
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for _, offsets in train_data:
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for start, end, ent_type in offsets:
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nlp.entity.add_label(ent_type)
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nlp.entity.model.learn_rate = 0.001
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for itn in range(100):
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random.shuffle(train_data)
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for raw_text, entity_offsets in train_data:
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doc = nlp.make_doc(raw_text)
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gold = GoldParse(doc, entities=entity_offsets)
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loss = nlp.entity.update(doc, gold)
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with temp_save_model(nlp) as model_dir:
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nlp2 = Language(path=model_dir)
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for raw_text, entity_offsets in train_data:
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doc = nlp2(raw_text)
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ents = {(ent.start_char, ent.end_char): ent.label_ for ent in doc.ents}
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for start, end, label in entity_offsets:
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if (start, end) in ents:
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assert ents[(start, end)] == label
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break
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else:
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if entity_offsets:
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raise Exception(ents)
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