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test_poincare.py
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test_poincare.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Author: Jayant Jain <jayantjain1992@gmail.com>
# Copyright (C) 2017 Radim Rehurek <me@radimrehurek.com>
# Licensed under the GNU LGPL v2.1 - http://www.gnu.org/licenses/lgpl.html
"""
Automated tests for checking the poincare module from the models package.
"""
import logging
import os
import tempfile
import unittest
try:
from mock import Mock
except ImportError:
from unittest.mock import Mock
import numpy as np
try:
import autograd # noqa:F401
autograd_installed = True
except ImportError:
autograd_installed = False
from gensim.models.poincare import PoincareRelations, PoincareModel, PoincareKeyedVectors
from gensim.test.utils import datapath
logger = logging.getLogger(__name__)
def testfile():
# temporary data will be stored to this file
return os.path.join(tempfile.gettempdir(), 'gensim_word2vec.tst')
class TestPoincareData(unittest.TestCase):
def test_encoding_handling(self):
"""Tests whether utf8 and non-utf8 data loaded correctly."""
non_utf8_file = datapath('poincare_cp852.tsv')
relations = [relation for relation in PoincareRelations(non_utf8_file, encoding='cp852')]
self.assertEqual(len(relations), 2)
self.assertEqual(relations[0], (u'tímto', u'budeš'))
utf8_file = datapath('poincare_utf8.tsv')
relations = [relation for relation in PoincareRelations(utf8_file)]
self.assertEqual(len(relations), 2)
self.assertEqual(relations[0], (u'tímto', u'budeš'))
class TestPoincareModel(unittest.TestCase):
def setUp(self):
self.data = PoincareRelations(datapath('poincare_hypernyms.tsv'))
self.data_large = PoincareRelations(datapath('poincare_hypernyms_large.tsv'))
def models_equal(self, model_1, model_2):
self.assertEqual(len(model_1.kv.vocab), len(model_2.kv.vocab))
self.assertEqual(set(model_1.kv.vocab.keys()), set(model_2.kv.vocab.keys()))
self.assertTrue(np.allclose(model_1.kv.syn0, model_2.kv.syn0))
def test_data_counts(self):
"""Tests whether data has been loaded correctly and completely."""
model = PoincareModel(self.data)
self.assertEqual(len(model.all_relations), 5)
self.assertEqual(len(model.node_relations[model.kv.vocab['kangaroo.n.01'].index]), 3)
self.assertEqual(len(model.kv.vocab), 7)
self.assertTrue('mammal.n.01' not in model.node_relations)
def test_data_counts_with_bytes(self):
"""Tests whether input bytes data is loaded correctly and completely."""
model = PoincareModel([(b'\x80\x01c', b'\x50\x71a'), (b'node.1', b'node.2')])
self.assertEqual(len(model.all_relations), 2)
self.assertEqual(len(model.node_relations[model.kv.vocab[b'\x80\x01c'].index]), 1)
self.assertEqual(len(model.kv.vocab), 4)
self.assertTrue(b'\x50\x71a' not in model.node_relations)
def test_persistence(self):
"""Tests whether the model is saved and loaded correctly."""
model = PoincareModel(self.data, burn_in=0, negative=3)
model.train(epochs=1)
model.save(testfile())
loaded = PoincareModel.load(testfile())
self.models_equal(model, loaded)
def test_persistence_separate_file(self):
"""Tests whether the model is saved and loaded correctly when the arrays are stored separately."""
model = PoincareModel(self.data, burn_in=0, negative=3)
model.train(epochs=1)
model.save(testfile(), sep_limit=1)
loaded = PoincareModel.load(testfile())
self.models_equal(model, loaded)
def test_train_after_load(self):
"""Tests whether the model can be trained correctly after loading from disk."""
model = PoincareModel(self.data, burn_in=0, negative=3)
model.train(epochs=1)
model.save(testfile())
loaded = PoincareModel.load(testfile())
model.train(epochs=1)
loaded.train(epochs=1)
self.models_equal(model, loaded)
def test_persistence_old_model(self):
"""Tests whether model from older gensim version is loaded correctly."""
loaded = PoincareModel.load(datapath('poincare_test_3.4.0'))
self.assertEqual(loaded.kv.syn0.shape, (239, 2))
self.assertEqual(len(loaded.kv.vocab), 239)
self.assertEqual(loaded.size, 2)
self.assertEqual(len(loaded.all_relations), 200)
def test_train_old_model_after_load(self):
"""Tests whether loaded model from older gensim version can be trained correctly."""
loaded = PoincareModel.load(datapath('poincare_test_3.4.0'))
old_vectors = np.copy(loaded.kv.syn0)
loaded.train(epochs=2)
self.assertFalse(np.allclose(old_vectors, loaded.kv.syn0))
def test_invalid_data_raises_error(self):
"""Tests that error is raised on invalid input data."""
with self.assertRaises(ValueError):
PoincareModel([("a", "b", "c")])
with self.assertRaises(ValueError):
PoincareModel(["a", "b", "c"])
with self.assertRaises(ValueError):
PoincareModel("ab")
def test_vector_shape(self):
"""Tests whether vectors are initialized with the correct size."""
model = PoincareModel(self.data, size=20)
self.assertEqual(model.kv.syn0.shape, (7, 20))
def test_vector_dtype(self):
"""Tests whether vectors have the correct dtype before and after training."""
model = PoincareModel(self.data_large, dtype=np.float32, burn_in=0, negative=3)
self.assertEqual(model.kv.syn0.dtype, np.float32)
model.train(epochs=1)
self.assertEqual(model.kv.syn0.dtype, np.float32)
def test_training(self):
"""Tests that vectors are different before and after training."""
model = PoincareModel(self.data_large, burn_in=0, negative=3)
old_vectors = np.copy(model.kv.syn0)
model.train(epochs=2)
self.assertFalse(np.allclose(old_vectors, model.kv.syn0))
def test_training_multiple(self):
"""Tests that calling train multiple times results in different vectors."""
model = PoincareModel(self.data_large, burn_in=0, negative=3)
model.train(epochs=2)
old_vectors = np.copy(model.kv.syn0)
model.train(epochs=1)
self.assertFalse(np.allclose(old_vectors, model.kv.syn0))
old_vectors = np.copy(model.kv.syn0)
model.train(epochs=0)
self.assertTrue(np.allclose(old_vectors, model.kv.syn0))
def test_gradients_check(self):
"""Tests that the model is trained successfully with gradients check enabled."""
model = PoincareModel(self.data, negative=3)
try:
model.train(epochs=1, batch_size=1, check_gradients_every=1)
except Exception as e:
self.fail('Exception %s raised unexpectedly while training with gradient checking' % repr(e))
@unittest.skipIf(not autograd_installed, 'autograd needs to be installed for this test')
def test_wrong_gradients_raises_assertion(self):
"""Tests that discrepancy in gradients raises an error."""
model = PoincareModel(self.data, negative=3)
model._loss_grad = Mock(return_value=np.zeros((2 + model.negative, model.size)))
with self.assertRaises(AssertionError):
model.train(epochs=1, batch_size=1, check_gradients_every=1)
def test_reproducible(self):
"""Tests that vectors are same for two independent models trained with the same seed."""
model_1 = PoincareModel(self.data_large, seed=1, negative=3, burn_in=1)
model_1.train(epochs=2)
model_2 = PoincareModel(self.data_large, seed=1, negative=3, burn_in=1)
model_2.train(epochs=2)
self.assertTrue(np.allclose(model_1.kv.syn0, model_2.kv.syn0))
def test_burn_in(self):
"""Tests that vectors are different after burn-in."""
model = PoincareModel(self.data, burn_in=1, negative=3)
original_vectors = np.copy(model.kv.syn0)
model.train(epochs=0)
self.assertFalse(np.allclose(model.kv.syn0, original_vectors))
def test_burn_in_only_done_once(self):
"""Tests that burn-in does not happen when train is called a second time."""
model = PoincareModel(self.data, negative=3, burn_in=1)
model.train(epochs=0)
original_vectors = np.copy(model.kv.syn0)
model.train(epochs=0)
self.assertTrue(np.allclose(model.kv.syn0, original_vectors))
def test_negatives(self):
"""Tests that correct number of negatives are sampled."""
model = PoincareModel(self.data, negative=5)
self.assertEqual(len(model._get_candidate_negatives()), 5)
def test_error_if_negative_more_than_population(self):
"""Tests error is rased if number of negatives to sample is more than remaining nodes."""
model = PoincareModel(self.data, negative=5)
with self.assertRaises(ValueError):
model.train(epochs=1)
def test_no_duplicates_and_positives_in_negative_sample(self):
"""Tests that no duplicates or positively related nodes are present in negative samples."""
model = PoincareModel(self.data_large, negative=3)
positive_nodes = model.node_relations[0] # Positive nodes for node 0
num_samples = 100 # Repeat experiment multiple times
for i in range(num_samples):
negatives = model._sample_negatives(0)
self.assertFalse(positive_nodes & set(negatives))
self.assertEqual(len(negatives), len(set(negatives)))
def test_handle_duplicates(self):
"""Tests that correct number of negatives are used."""
vector_updates = np.array([[0.5, 0.5], [0.1, 0.2], [0.3, -0.2]])
node_indices = [0, 1, 0]
PoincareModel._handle_duplicates(vector_updates, node_indices)
vector_updates_expected = np.array([[0.0, 0.0], [0.1, 0.2], [0.8, 0.3]])
self.assertTrue((vector_updates == vector_updates_expected).all())
@classmethod
def tearDownClass(cls):
try:
os.unlink(testfile())
except OSError:
pass
class TestPoincareKeyedVectors(unittest.TestCase):
def setUp(self):
self.vectors = PoincareKeyedVectors.load_word2vec_format(datapath('poincare_vectors.bin'), binary=True)
def test_most_similar(self):
"""Test most_similar returns expected results."""
expected = [
'canine.n.02',
'hunting_dog.n.01',
'carnivore.n.01',
'placental.n.01',
'mammal.n.01'
]
predicted = [result[0] for result in self.vectors.most_similar('dog.n.01', topn=5)]
self.assertEqual(expected, predicted)
def test_most_similar_topn(self):
"""Test most_similar returns correct results when `topn` is specified."""
self.assertEqual(len(self.vectors.most_similar('dog.n.01', topn=5)), 5)
self.assertEqual(len(self.vectors.most_similar('dog.n.01', topn=10)), 10)
predicted = self.vectors.most_similar('dog.n.01', topn=None)
self.assertEqual(len(predicted), len(self.vectors.vocab) - 1)
self.assertEqual(predicted[-1][0], 'gallant_fox.n.01')
def test_most_similar_raises_keyerror(self):
"""Test most_similar raises KeyError when input is out of vocab."""
with self.assertRaises(KeyError):
self.vectors.most_similar('not_in_vocab')
def test_most_similar_restrict_vocab(self):
"""Test most_similar returns handles restrict_vocab correctly."""
expected = set(self.vectors.index2word[:5])
predicted = set(result[0] for result in self.vectors.most_similar('dog.n.01', topn=5, restrict_vocab=5))
self.assertEqual(expected, predicted)
def test_most_similar_to_given(self):
"""Test most_similar_to_given returns correct results."""
predicted = self.vectors.most_similar_to_given('dog.n.01', ['carnivore.n.01', 'placental.n.01', 'mammal.n.01'])
self.assertEqual(predicted, 'carnivore.n.01')
def test_most_similar_with_vector_input(self):
"""Test most_similar returns expected results with an input vector instead of an input word."""
expected = [
'dog.n.01',
'canine.n.02',
'hunting_dog.n.01',
'carnivore.n.01',
'placental.n.01',
]
input_vector = self.vectors['dog.n.01']
predicted = [result[0] for result in self.vectors.most_similar([input_vector], topn=5)]
self.assertEqual(expected, predicted)
def test_distance(self):
"""Test that distance returns expected values."""
self.assertTrue(np.allclose(self.vectors.distance('dog.n.01', 'mammal.n.01'), 4.5278745))
self.assertEqual(self.vectors.distance('dog.n.01', 'dog.n.01'), 0)
def test_distances(self):
"""Test that distances between one word and multiple other words have expected values."""
distances = self.vectors.distances('dog.n.01', ['mammal.n.01', 'dog.n.01'])
self.assertTrue(np.allclose(distances, [4.5278745, 0]))
distances = self.vectors.distances('dog.n.01')
self.assertEqual(len(distances), len(self.vectors.vocab))
self.assertTrue(np.allclose(distances[-1], 10.04756))
def test_distances_with_vector_input(self):
"""Test that distances between input vector and a list of words have expected values."""
input_vector = self.vectors['dog.n.01']
distances = self.vectors.distances(input_vector, ['mammal.n.01', 'dog.n.01'])
self.assertTrue(np.allclose(distances, [4.5278745, 0]))
distances = self.vectors.distances(input_vector)
self.assertEqual(len(distances), len(self.vectors.vocab))
self.assertTrue(np.allclose(distances[-1], 10.04756))
def test_poincare_distances_batch(self):
"""Test that poincare_distance_batch returns correct distances."""
vector_1 = self.vectors['dog.n.01']
vectors_2 = self.vectors[['mammal.n.01', 'dog.n.01']]
distances = self.vectors.vector_distance_batch(vector_1, vectors_2)
self.assertTrue(np.allclose(distances, [4.5278745, 0]))
def test_poincare_distance(self):
"""Test that poincare_distance returns correct distance between two input vectors."""
vector_1 = self.vectors['dog.n.01']
vector_2 = self.vectors['mammal.n.01']
distance = self.vectors.vector_distance(vector_1, vector_2)
self.assertTrue(np.allclose(distance, 4.5278745))
distance = self.vectors.vector_distance(vector_1, vector_1)
self.assertTrue(np.allclose(distance, 0))
def test_closest_child(self):
"""Test closest_child returns expected value and returns None for lowest node in hierarchy."""
self.assertEqual(self.vectors.closest_child('dog.n.01'), 'terrier.n.01')
self.assertEqual(self.vectors.closest_child('harbor_porpoise.n.01'), None)
def test_closest_parent(self):
"""Test closest_parent returns expected value and returns None for highest node in hierarchy."""
self.assertEqual(self.vectors.closest_parent('dog.n.01'), 'canine.n.02')
self.assertEqual(self.vectors.closest_parent('mammal.n.01'), None)
def test_ancestors(self):
"""Test ancestors returns expected list and returns empty list for highest node in hierarchy."""
expected = ['canine.n.02', 'carnivore.n.01', 'placental.n.01', 'mammal.n.01']
self.assertEqual(self.vectors.ancestors('dog.n.01'), expected)
expected = []
self.assertEqual(self.vectors.ancestors('mammal.n.01'), expected)
def test_descendants(self):
"""Test descendants returns expected list and returns empty list for lowest node in hierarchy."""
expected = [
'terrier.n.01', 'sporting_dog.n.01', 'spaniel.n.01', 'water_spaniel.n.01', 'irish_water_spaniel.n.01'
]
self.assertEqual(self.vectors.descendants('dog.n.01'), expected)
self.assertEqual(self.vectors.descendants('dog.n.01', max_depth=3), expected[:3])
def test_similarity(self):
"""Test similarity returns expected value for two nodes, and for identical nodes."""
self.assertTrue(np.allclose(self.vectors.similarity('dog.n.01', 'dog.n.01'), 1))
self.assertTrue(np.allclose(self.vectors.similarity('dog.n.01', 'mammal.n.01'), 0.180901358))
def norm(self):
"""Test norm returns expected value."""
self.assertTrue(np.allclose(self.vectors.norm('dog.n.01'), 0.97757602))
self.assertTrue(np.allclose(self.vectors.norm('mammal.n.01'), 0.03914723))
def test_difference_in_hierarchy(self):
"""Test difference_in_hierarchy returns expected value for two nodes, and for identical nodes."""
self.assertTrue(np.allclose(self.vectors.difference_in_hierarchy('dog.n.01', 'dog.n.01'), 0))
self.assertTrue(np.allclose(self.vectors.difference_in_hierarchy('mammal.n.01', 'dog.n.01'), 0.9384287))
self.assertTrue(np.allclose(self.vectors.difference_in_hierarchy('dog.n.01', 'mammal.n.01'), -0.9384287))
def test_words_closer_than(self):
"""Test words_closer_than returns expected value for distinct and identical nodes."""
self.assertEqual(self.vectors.words_closer_than('dog.n.01', 'dog.n.01'), [])
expected = set(['canine.n.02', 'hunting_dog.n.01'])
self.assertEqual(set(self.vectors.words_closer_than('dog.n.01', 'carnivore.n.01')), expected)
def test_rank(self):
"""Test rank returns expected value for distinct and identical nodes."""
self.assertEqual(self.vectors.rank('dog.n.01', 'dog.n.01'), 1)
self.assertEqual(self.vectors.rank('dog.n.01', 'carnivore.n.01'), 3)
if __name__ == '__main__':
logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.DEBUG)
unittest.main()