def setUp(self):
super(TestIndexField, self).setUp()
self.text = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
{"words": SingleIdTokenIndexer("words")})
def test_sequence_methods(self):
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]], {})
assert len(field) == 5
assert field[1].text == "is"
assert [token.text
for token in field] == ["This", "is", "a", "sentence", "."]
def test_token_padding_lengths_are_computed_correctly(self):
field = TextField(
[Token(t) for t in ["A", "sentence"]],
token_indexers={
"field_with_dict":
DictReturningTokenIndexer(token_min_padding_length=3),
"words":
SingleIdTokenIndexer("words", token_min_padding_length=3),
"characters":
TokenCharacterIndexer("characters",
min_padding_length=1,
token_min_padding_length=3)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
assert padding_lengths == {
'token_ids_length': 5,
'additional_key_length': 3,
'words_length': 3,
'characters_length': 3,
'num_token_characters': 8,
'num_tokens': 5,
}
tensors = field.as_tensor(padding_lengths)
assert tensors['additional_key'].tolist()[-1] == 0
assert tensors['words'].tolist()[-1] == 0
assert tensors['characters'].tolist()[-1] == [0] * 8
def test_token_indexer_returns_dict(self):
field = TextField(
[Token(t) for t in ["A", "sentence"]],
token_indexers={
"field_with_dict":
DictReturningTokenIndexer(),
"words":
SingleIdTokenIndexer("words"),
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
assert padding_lengths == {
'token_ids_length': 5,
'additional_key_length': 2,
'words_length': 2,
'characters_length': 2,
'num_token_characters': 8,
'num_tokens': 5,
}
padding_lengths['token_ids_length'] = 7
padding_lengths['additional_key_length'] = 3
padding_lengths['words_length'] = 4
padding_lengths['characters_length'] = 4
tensors = field.as_tensor(padding_lengths)
assert list(tensors['token_ids'].shape) == [7]
assert list(tensors['additional_key'].shape) == [3]
assert list(tensors['words'].shape) == [4]
assert list(tensors['characters'].shape) == [4, 8]
def test_as_tensor_handles_words_and_characters_with_longer_lengths(self):
field = TextField(
[Token(t) for t in ["a", "sentence", "."]],
token_indexers={
"words":
SingleIdTokenIndexer("words"),
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
padding_lengths["words_length"] = 5
padding_lengths["characters_length"] = 5
padding_lengths["num_token_characters"] = 10
tensor_dict = field.as_tensor(padding_lengths)
numpy.testing.assert_array_almost_equal(
tensor_dict["words"].detach().cpu().numpy(),
numpy.array([1, 2, 1, 0, 0]))
numpy.testing.assert_array_almost_equal(
tensor_dict["characters"].detach().cpu().numpy(),
numpy.array([[1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[3, 4, 5, 6, 4, 5, 7, 4, 0, 0],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]))
def text_to_instance(self,
source_string: str,
target_string: str = None) -> Instance:
tokenized_source = self.source_tokenizer.tokenize(source_string)
if self.source_add_start_token:
tokenized_source.insert(0, Token(START_SYMBOL))
tokenized_source.append(Token(END_SYMBOL))
source_field = TextField(tokenized_source, self.source_token_indexers)
if target_string is not None:
tokenized_target = self.target_tokenizer.tokenize(target_string)
tokenized_target.insert(0, Token(START_SYMBOL))
tokenized_target.append(Token(END_SYMBOL))
target_field = TextField(tokenized_target,
self.target_token_indexers)
return Instance({
"source_tokens": source_field,
"target_tokens": target_field
})
else:
return Instance({"source_tokens": source_field})
def test_as_tensor_handles_words(self):
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={"words": SingleIdTokenIndexer("words")})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
tensor_dict = field.as_tensor(padding_lengths)
numpy.testing.assert_array_almost_equal(
tensor_dict["words"].detach().cpu().numpy(),
numpy.array([1, 1, 1, 2, 1]))
def test_as_tensor_handles_characters_if_empty_field(self):
field = TextField(
[],
token_indexers={
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
tensor_dict = field.as_tensor(padding_lengths)
expected_character_array = numpy.array([])
numpy.testing.assert_array_almost_equal(
tensor_dict["characters"].detach().cpu().numpy(),
expected_character_array)
def test_as_tensor_handles_characters(self):
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
tensor_dict = field.as_tensor(padding_lengths)
expected_character_array = numpy.array([[1, 1, 1, 3, 0, 0, 0, 0],
[1, 3, 0, 0, 0, 0, 0, 0],
[1, 0, 0, 0, 0, 0, 0, 0],
[3, 4, 5, 6, 4, 5, 7, 4],
[1, 0, 0, 0, 0, 0, 0, 0]])
numpy.testing.assert_array_almost_equal(
tensor_dict["characters"].detach().cpu().numpy(),
expected_character_array)
def test_field_counts_vocab_items_correctly(self):
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={"words": SingleIdTokenIndexer("words")})
namespace_token_counts = defaultdict(lambda: defaultdict(int))
field.count_vocab_items(namespace_token_counts)
assert namespace_token_counts["words"]["This"] == 1
assert namespace_token_counts["words"]["is"] == 1
assert namespace_token_counts["words"]["a"] == 1
assert namespace_token_counts["words"]["sentence"] == 1
assert namespace_token_counts["words"]["."] == 1
assert list(namespace_token_counts.keys()) == ["words"]
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
namespace_token_counts = defaultdict(lambda: defaultdict(int))
field.count_vocab_items(namespace_token_counts)
assert namespace_token_counts["characters"]["T"] == 1
assert namespace_token_counts["characters"]["h"] == 1
assert namespace_token_counts["characters"]["i"] == 2
assert namespace_token_counts["characters"]["s"] == 3
assert namespace_token_counts["characters"]["a"] == 1
assert namespace_token_counts["characters"]["e"] == 3
assert namespace_token_counts["characters"]["n"] == 2
assert namespace_token_counts["characters"]["t"] == 1
assert namespace_token_counts["characters"]["c"] == 1
assert namespace_token_counts["characters"]["."] == 1
assert list(namespace_token_counts.keys()) == ["characters"]
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={
"words":
SingleIdTokenIndexer("words"),
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
namespace_token_counts = defaultdict(lambda: defaultdict(int))
field.count_vocab_items(namespace_token_counts)
assert namespace_token_counts["characters"]["T"] == 1
assert namespace_token_counts["characters"]["h"] == 1
assert namespace_token_counts["characters"]["i"] == 2
assert namespace_token_counts["characters"]["s"] == 3
assert namespace_token_counts["characters"]["a"] == 1
assert namespace_token_counts["characters"]["e"] == 3
assert namespace_token_counts["characters"]["n"] == 2
assert namespace_token_counts["characters"]["t"] == 1
assert namespace_token_counts["characters"]["c"] == 1
assert namespace_token_counts["characters"]["."] == 1
assert namespace_token_counts["words"]["This"] == 1
assert namespace_token_counts["words"]["is"] == 1
assert namespace_token_counts["words"]["a"] == 1
assert namespace_token_counts["words"]["sentence"] == 1
assert namespace_token_counts["words"]["."] == 1
assert set(namespace_token_counts.keys()) == {"words", "characters"}
def test_printing_doesnt_crash(self):
field = TextField([Token(t) for t in ["A", "sentence"]],
{"words": SingleIdTokenIndexer(namespace="words")})
print(field)
def test_padding_lengths_are_computed_correctly(self):
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={"words": SingleIdTokenIndexer("words")})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
assert padding_lengths == {"words_length": 5, "num_tokens": 5}
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={
"characters":
TokenCharacterIndexer("characters", min_padding_length=1)
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
assert padding_lengths == {
"num_tokens": 5,
"characters_length": 5,
"num_token_characters": 8
}
field = TextField(
[Token(t) for t in ["This", "is", "a", "sentence", "."]],
token_indexers={
"characters":
TokenCharacterIndexer("characters", min_padding_length=1),
"words":
SingleIdTokenIndexer("words")
})
field.index(self.vocab)
padding_lengths = field.get_padding_lengths()
assert padding_lengths == {
"num_tokens": 5,
"characters_length": 5,
"words_length": 5,
"num_token_characters": 8
}
def test_index_converts_field_correctly(self):
vocab = Dictionary()
sentence_index = vocab.add_token_to_namespace("sentence",
namespace='words')
capital_a_index = vocab.add_token_to_namespace("A", namespace='words')
capital_a_char_index = vocab.add_token_to_namespace(
"A", namespace='characters')
s_index = vocab.add_token_to_namespace("s", namespace='characters')
e_index = vocab.add_token_to_namespace("e", namespace='characters')
n_index = vocab.add_token_to_namespace("n", namespace='characters')
t_index = vocab.add_token_to_namespace("t", namespace='characters')
c_index = vocab.add_token_to_namespace("c", namespace='characters')
field = TextField([Token(t) for t in ["A", "sentence"]],
{"words": SingleIdTokenIndexer(namespace="words")})
field.index(vocab)
# pylint: disable=protected-access
assert field._indexed_tokens["words"] == [
capital_a_index, sentence_index
]
field1 = TextField(
[Token(t) for t in ["A", "sentence"]], {
"characters":
TokenCharacterIndexer(namespace="characters",
min_padding_length=1)
})
field1.index(vocab)
assert field1._indexed_tokens["characters"] == [[capital_a_char_index],
[
s_index, e_index,
n_index, t_index,
e_index, n_index,
c_index, e_index
]]
field2 = TextField(
[Token(t) for t in ["A", "sentence"]],
token_indexers={
"words":
SingleIdTokenIndexer(namespace="words"),
"characters":
TokenCharacterIndexer(namespace="characters",
min_padding_length=1)
})
field2.index(vocab)
assert field2._indexed_tokens["words"] == [
capital_a_index, sentence_index
]
assert field2._indexed_tokens["characters"] == [[capital_a_char_index],
[
s_index, e_index,
n_index, t_index,
e_index, n_index,
c_index, e_index
]]