mirror of https://github.com/explosion/spaCy.git
58 lines
1.8 KiB
Python
58 lines
1.8 KiB
Python
|
# coding: utf8
|
||
|
|
from __future__ import unicode_literals
|
||
|
|
|
||
|
|
import spacy
|
||
|
|
from spacy.util import minibatch, compounding
|
||
|
|
|
||
|
|
|
||
|
|
def test_issue4030():
|
||
|
|
""" Test whether textcat works fine with empty doc """
|
||
|
|
unique_classes = ["offensive", "inoffensive"]
|
||
|
|
x_train = [
|
||
|
|
"This is an offensive text",
|
||
|
|
"This is the second offensive text",
|
||
|
|
"inoff",
|
||
|
|
]
|
||
|
|
y_train = ["offensive", "offensive", "inoffensive"]
|
||
|
|
|
||
|
|
# preparing the data
|
||
|
|
pos_cats = list()
|
||
|
|
for train_instance in y_train:
|
||
|
|
pos_cats.append({label: label == train_instance for label in unique_classes})
|
||
|
|
train_data = list(zip(x_train, [{"cats": cats} for cats in pos_cats]))
|
||
|
|
|
||
|
|
# set up the spacy model with a text categorizer component
|
||
|
|
nlp = spacy.blank("en")
|
||
|
|
|
||
|
|
textcat = nlp.create_pipe(
|
||
|
|
"textcat",
|
||
|
|
config={"exclusive_classes": True, "architecture": "bow", "ngram_size": 2},
|
||
|
|
)
|
||
|
|
|
||
|
|
for label in unique_classes:
|
||
|
|
textcat.add_label(label)
|
||
|
|
nlp.add_pipe(textcat, last=True)
|
||
|
|
|
||
|
|
# training the network
|
||
|
|
other_pipes = [pipe for pipe in nlp.pipe_names if pipe != "textcat"]
|
||
|
|
with nlp.disable_pipes(*other_pipes):
|
||
|
|
optimizer = nlp.begin_training()
|
||
|
|
for i in range(3):
|
||
|
|
losses = {}
|
||
|
|
batches = minibatch(train_data, size=compounding(4.0, 32.0, 1.001))
|
||
|
|
|
||
|
|
for batch in batches:
|
||
|
|
texts, annotations = zip(*batch)
|
||
|
|
nlp.update(
|
||
|
|
docs=texts,
|
||
|
|
golds=annotations,
|
||
|
|
sgd=optimizer,
|
||
|
|
drop=0.1,
|
||
|
|
losses=losses,
|
||
|
|
)
|
||
|
|
|
||
|
|
# processing of an empty doc should result in 0.0 for all categories
|
||
|
|
doc = nlp("")
|
||
|
|
assert doc.cats["offensive"] == 0.0
|
||
|
|
assert doc.cats["inoffensive"] == 0.0
|