def tokenize(self, text_input):
"""Performs basic word tokenization for BERT.
Args:
text_input: A `Tensor` or `RaggedTensor` of untokenized UTF-8 strings.
Returns:
A `RaggedTensor` of tokenized strings from text_input.
"""
# lowercase and strip accents (if option is set)
if self._lower_case:
text_input = case_fold_utf8(text_input)
text_input = normalize_utf8(text_input, "NFD")
text_input = string_ops.regex_replace(text_input, r"\p{Mn}", "")
else:
# utf8 normalization
if self._normalization_form is not None:
text_input = normalize_utf8(text_input, self._normalization_form)
# strip out control characters
text_input = string_ops.regex_replace(text_input, r"\p{Cc}|\p{Cf}", " ")
# For chinese and emoji characters, tokenize by unicode codepoints
unicode_tokenizer = UnicodeScriptTokenizer(
keep_whitespace=self._keep_whitespace)
script_tokenized = unicode_tokenizer.tokenize(text_input)
split_cond = self._should_split(script_tokenized)
unicode_char_split = ragged_string_ops.unicode_split(
script_tokenized, "UTF-8")
unicode_split_tokens = array_ops.where(
array_ops.squeeze(split_cond),
y=array_ops.expand_dims(script_tokenized.values, axis=1),
x=unicode_char_split.values)
final_tokens = script_tokenized.with_flat_values(unicode_split_tokens)
return final_tokens.merge_dims(-2, -1)
class UnicodeScriptTokenizerOpTest(ragged_test_util.RaggedTensorTestCase):
def setUp(self):
super(UnicodeScriptTokenizerOpTest, self).setUp()
self.tokenizer = UnicodeScriptTokenizer()
def testRequireParams(self):
with self.cached_session():
with self.assertRaises(TypeError):
self.tokenizer.tokenize()
def testScalar(self):
test_value = constant_op.constant(b'I love Flume!')
expected_tokens = [b'I', b'love', b'Flume', b'!']
expected_offset_starts = [0, 2, 7, 12]
expected_offset_limits = [1, 6, 12, 13]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testVectorSingleValue(self):
test_value = constant_op.constant([b'I love Flume!'])
expected_tokens = [[b'I', b'love', b'Flume', b'!']]
expected_offset_starts = [[0, 2, 7, 12]]
expected_offset_limits = [[1, 6, 12, 13]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testVector(self):
test_value = constant_op.constant([b'I love Flume!', b'Good day'])
expected_tokens = [[b'I', b'love', b'Flume', b'!'], [b'Good', b'day']]
expected_offset_starts = [[0, 2, 7, 12], [0, 5]]
expected_offset_limits = [[1, 6, 12, 13], [4, 8]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testMatrix(self):
test_value = constant_op.constant([[b'I love Flume!', b'Good day'],
[b'I don\'t want', b'no scrubs']])
expected_tokens = [[[b'I', b'love', b'Flume', b'!'], [b'Good', b'day']],
[[b'I', b'don', b'\'', b't', b'want'],
[b'no', b'scrubs']]]
expected_offset_starts = [[[0, 2, 7, 12], [0, 5]],
[[0, 2, 5, 6, 8], [0, 3]]]
expected_offset_limits = [[[1, 6, 12, 13], [4, 8]],
[[1, 5, 6, 7, 12], [2, 9]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testMatrixRagged(self):
test_value = ragged_factory_ops.constant([[b'I love Flume!'],
[b'I don\'t want', b'no scrubs']])
expected_tokens = [[[b'I', b'love', b'Flume', b'!']],
[[b'I', b'don', b'\'', b't', b'want'],
[b'no', b'scrubs']]]
expected_offset_starts = [[[0, 2, 7, 12]],
[[0, 2, 5, 6, 8], [0, 3]]]
expected_offset_limits = [[[1, 6, 12, 13]],
[[1, 5, 6, 7, 12], [2, 9]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def test3DimMatrix(self):
test_value = constant_op.constant([[[b'I love Flume!', b'Good day'],
[b'I don\'t want', b'no scrubs']],
[[b'I love Zhu!', b'Good night'],
[b'A scrub is', b'a guy']]])
expected_tokens = [[[[b'I', b'love', b'Flume', b'!'], [b'Good', b'day']],
[[b'I', b'don', b'\'', b't', b'want'],
[b'no', b'scrubs']]],
[[[b'I', b'love', b'Zhu', b'!'], [b'Good', b'night']],
[[b'A', b'scrub', b'is'], [b'a', b'guy']]]]
expected_offset_starts = [[[[0, 2, 7, 12], [0, 5]],
[[0, 2, 5, 6, 8], [0, 3]]],
[[[0, 2, 7, 10], [0, 5]],
[[0, 2, 8], [0, 2]]]]
expected_offset_limits = [[[[1, 6, 12, 13], [4, 8]],
[[1, 5, 6, 7, 12], [2, 9]]],
[[[1, 6, 10, 11], [4, 10]],
[[1, 7, 10], [1, 5]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def test3DimMatrixRagged(self):
test_value = ragged_factory_ops.constant([[[b'I love Flume!'],
[b'I don\'t want',
b'no scrubs']],
[[b'I love Zhu!',
b'Good night']]])
expected_tokens = [[[[b'I', b'love', b'Flume', b'!']],
[[b'I', b'don', b'\'', b't', b'want'],
[b'no', b'scrubs']]],
[[[b'I', b'love', b'Zhu', b'!'], [b'Good', b'night']]]]
expected_offset_starts = [[[[0, 2, 7, 12]],
[[0, 2, 5, 6, 8], [0, 3]]],
[[[0, 2, 7, 10], [0, 5]]]]
expected_offset_limits = [[[[1, 6, 12, 13]],
[[1, 5, 6, 7, 12], [2, 9]]],
[[[1, 6, 10, 11], [4, 10]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testInternationalization(self):
test_value = constant_op.constant([u"J'adore la灯".encode('utf8'),
u'¡Escríbeme!'.encode('utf8')])
expected_tokens = [[b'J', b"'", b'adore', b'la', u'灯'.encode('utf8')],
[u'¡'.encode('utf8'), u'Escríbeme'.encode('utf8'), b'!']]
expected_offset_starts = [[0, 1, 2, 8, 10], [0, 2, 12]]
expected_offset_limits = [[1, 2, 7, 10, 13], [2, 12, 13]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testSpaceBoundaries(self):
test_value = constant_op.constant([b' Hook em! ', b' .Ok. Go '])
expected_tokens = [[b'Hook', b'em', b'!'], [b'.', b'Ok', b'.', b'Go']]
expected_offset_starts = [[1, 6, 8], [1, 2, 4, 8]]
expected_offset_limits = [[5, 8, 9], [2, 4, 5, 10]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testKeepWhitespace(self):
test_value = constant_op.constant([
b'\'Black Panther,\' \t \xe2\x80\x98A Star Is Born\xe2\x80\x98 among AFI Awards honorees',
b' .Ok. Go '
])
expected_tokens = [[
b'\'', b'Black', b' ', b'Panther', b',\'', b' \t ', b'\xe2\x80\x98',
b'A', b' ', b'Star', b' ', b'Is', b' ', b'Born', b'\xe2\x80\x98', b' ',
b'among', b' ', b'AFI', b' ', b'Awards', b' ', b'honorees'
], [b' ', b'.', b'Ok', b'.', b' ', b'Go', b' ']]
expected_offset_starts = [
[0, 1, 6, 7, 14, 16, 19, 22, 23, 24, 28, 29, 31, 32, 36, 39, 40,
45, 46, 49, 50, 56, 57],
[0, 1, 2, 4, 5, 8, 10]]
expected_offset_limits = [
[1, 6, 7, 14, 16, 19, 22, 23, 24, 28, 29, 31, 32, 36, 39, 40,
45, 46, 49, 50, 56, 57, 65],
[1, 2, 4, 5, 8, 10, 12]]
self.tokenizer = UnicodeScriptTokenizer(keep_whitespace=True)
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testOnlySpaces(self):
test_value = constant_op.constant([b' ', b' '])
expected_tokens = [[], []]
expected_offset_starts = [[], []]
expected_offset_limits = [[], []]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testWhitespaceCharacters(self):
test_value = constant_op.constant([b'things:\tcarpet\rdesk\nlamp'])
expected_tokens = [[b'things', b':', b'carpet', b'desk', b'lamp']]
expected_offset_starts = [[0, 6, 8, 15, 20]]
expected_offset_limits = [[6, 7, 14, 19, 24]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyStringSingle(self):
test_value = constant_op.constant([b''])
expected_tokens = [[]]
expected_offset_starts = [[]]
expected_offset_limits = [[]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyString(self):
test_value = constant_op.constant(
[b'', b'I love Flume!', b'', b'O hai', b''])
expected_tokens = [[], [b'I', b'love', b'Flume', b'!'], [], [b'O', b'hai'],
[]]
expected_offset_starts = [[], [0, 2, 7, 12], [], [0, 2], []]
expected_offset_limits = [[], [1, 6, 12, 13], [], [1, 5], []]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyDimensions(self):
test_value = ragged_factory_ops.constant(
[[[b'I love Flume!', b'Good day. . .'], []], [],
[[b'I love Zhu!', b'Good night'], [b'A scrub is', b'a guy']]])
expected_tokens = [[[[b'I', b'love', b'Flume', b'!'],
[b'Good', b'day', b'...']], []], [],
[[[b'I', b'love', b'Zhu', b'!'], [b'Good', b'night']],
[[b'A', b'scrub', b'is'], [b'a', b'guy']]]]
expected_offset_starts = [[[[0, 2, 7, 12], [0, 5, 8]],
[]],
[],
[[[0, 2, 7, 10], [0, 5]],
[[0, 2, 8], [0, 2]]]]
expected_offset_limits = [[[[1, 6, 12, 13], [4, 8, 13]],
[]],
[],
[[[1, 6, 10, 11], [4, 10]],
[[1, 7, 10], [1, 5]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts, limits) = (
self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
class UnicodeScriptTokenizerOpTest(ragged_test_util.RaggedTensorTestCase):
def setUp(self):
self.tokenizer = UnicodeScriptTokenizer()
def testRequireParams(self):
with self.cached_session():
with self.assertRaises(TypeError):
self.tokenizer.tokenize()
def testScalar(self):
with self.cached_session():
with self.assertRaises(ValueError):
self.tokenizer.tokenize('I love Flume!')
def testVectorSingleValue(self):
test_value = constant_op.constant(['I love Flume!'])
expected_tokens = [['I', 'love', 'Flume', '!']]
expected_offset_starts = [[0, 2, 7, 12]]
expected_offset_limits = [[1, 6, 12, 13]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testVector(self):
test_value = constant_op.constant(['I love Flume!', 'Good day'])
expected_tokens = [['I', 'love', 'Flume', '!'], ['Good', 'day']]
expected_offset_starts = [[0, 2, 7, 12], [0, 5]]
expected_offset_limits = [[1, 6, 12, 13], [4, 8]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testMatrix(self):
test_value = constant_op.constant([['I love Flume!', 'Good day'],
['I don\'t want', 'no scrubs']])
expected_tokens = [[['I', 'love', 'Flume', '!'], ['Good', 'day']],
[['I', 'don', '\'', 't', 'want'], ['no', 'scrubs']]]
expected_offset_starts = [[[0, 2, 7, 12], [0, 5]],
[[0, 2, 5, 6, 8], [0, 3]]]
expected_offset_limits = [[[1, 6, 12, 13], [4, 8]],
[[1, 5, 6, 7, 12], [2, 9]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testMatrixRagged(self):
test_value = ragged_factory_ops.constant(
[['I love Flume!'], ['I don\'t want', 'no scrubs']])
expected_tokens = [[['I', 'love', 'Flume', '!']],
[['I', 'don', '\'', 't', 'want'], ['no', 'scrubs']]]
expected_offset_starts = [[[0, 2, 7, 12]], [[0, 2, 5, 6, 8], [0, 3]]]
expected_offset_limits = [[[1, 6, 12, 13]], [[1, 5, 6, 7, 12], [2, 9]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def test3DimMatrix(self):
test_value = constant_op.constant([[['I love Flume!', 'Good day'],
['I don\'t want', 'no scrubs']],
[['I love Zhu!', 'Good night'],
['A scrub is', 'a guy']]])
expected_tokens = [[[['I', 'love', 'Flume', '!'], ['Good', 'day']],
[['I', 'don', '\'', 't', 'want'], ['no',
'scrubs']]],
[[['I', 'love', 'Zhu', '!'], ['Good', 'night']],
[['A', 'scrub', 'is'], ['a', 'guy']]]]
expected_offset_starts = [[[[0, 2, 7, 12], [0, 5]],
[[0, 2, 5, 6, 8], [0, 3]]],
[[[0, 2, 7, 10], [0, 5]], [[0, 2, 8], [0,
2]]]]
expected_offset_limits = [[[[1, 6, 12, 13], [4, 8]],
[[1, 5, 6, 7, 12], [2, 9]]],
[[[1, 6, 10, 11], [4, 10]],
[[1, 7, 10], [1, 5]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def test3DimMatrixRagged(self):
test_value = ragged_factory_ops.constant(
[[['I love Flume!'], ['I don\'t want', 'no scrubs']],
[['I love Zhu!', 'Good night']]])
expected_tokens = [[[['I', 'love', 'Flume', '!']],
[['I', 'don', '\'', 't', 'want'], ['no',
'scrubs']]],
[[['I', 'love', 'Zhu', '!'], ['Good', 'night']]]]
expected_offset_starts = [[[[0, 2, 7, 12]], [[0, 2, 5, 6, 8], [0, 3]]],
[[[0, 2, 7, 10], [0, 5]]]]
expected_offset_limits = [[[[1, 6, 12, 13]], [[1, 5, 6, 7, 12], [2,
9]]],
[[[1, 6, 10, 11], [4, 10]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testInternationalization(self):
test_value = constant_op.constant(
[u"J'adore la灯".encode('utf8'), u'¡Escríbeme!'.encode('utf8')])
expected_tokens = [['J', "'", 'adore', 'la', u'灯'.encode('utf8')],
[
u'¡'.encode('utf8'),
u'Escríbeme'.encode('utf8'), '!'
]]
expected_offset_starts = [[0, 1, 2, 8, 10], [0, 2, 12]]
expected_offset_limits = [[1, 2, 7, 10, 13], [2, 12, 13]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testSpaceBoundaries(self):
test_value = constant_op.constant([' Hook em! ', ' .Ok. Go '])
expected_tokens = [['Hook', 'em', '!'], ['.', 'Ok', '.', 'Go']]
expected_offset_starts = [[1, 6, 8], [1, 2, 4, 8]]
expected_offset_limits = [[5, 8, 9], [2, 4, 5, 10]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testOnlySpaces(self):
test_value = constant_op.constant([' ', ' '])
expected_tokens = [[], []]
expected_offset_starts = [[], []]
expected_offset_limits = [[], []]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testWhitespaceCharacters(self):
test_value = constant_op.constant(['things:\tcarpet\rdesk\nlamp'])
expected_tokens = [['things', ':', 'carpet', 'desk', 'lamp']]
expected_offset_starts = [[0, 6, 8, 15, 20]]
expected_offset_limits = [[6, 7, 14, 19, 24]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyStringSingle(self):
test_value = constant_op.constant([''])
expected_tokens = [[]]
expected_offset_starts = [[]]
expected_offset_limits = [[]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyString(self):
test_value = constant_op.constant(
['', 'I love Flume!', '', 'O hai', ''])
expected_tokens = [[], ['I', 'love', 'Flume', '!'], [], ['O', 'hai'],
[]]
expected_offset_starts = [[], [0, 2, 7, 12], [], [0, 2], []]
expected_offset_limits = [[], [1, 6, 12, 13], [], [1, 5], []]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)
def testEmptyDimensions(self):
test_value = ragged_factory_ops.constant(
[[['I love Flume!', 'Good day. . .'], []], [],
[['I love Zhu!', 'Good night'], ['A scrub is', 'a guy']]])
expected_tokens = [[[['I', 'love', 'Flume', '!'],
['Good', 'day', '...']], []], [],
[[['I', 'love', 'Zhu', '!'], ['Good', 'night']],
[['A', 'scrub', 'is'], ['a', 'guy']]]]
expected_offset_starts = [[[[0, 2, 7, 12], [0, 5, 8]], []], [],
[[[0, 2, 7, 10], [0, 5]], [[0, 2, 8], [0,
2]]]]
expected_offset_limits = [[[[1, 6, 12, 13], [4, 8, 13]], []], [],
[[[1, 6, 10, 11], [4, 10]],
[[1, 7, 10], [1, 5]]]]
tokens = self.tokenizer.tokenize(test_value)
self.assertRaggedEqual(tokens, expected_tokens)
(tokens, starts,
limits) = (self.tokenizer.tokenize_with_offsets(test_value))
self.assertRaggedEqual(tokens, expected_tokens)
self.assertRaggedEqual(starts, expected_offset_starts)
self.assertRaggedEqual(limits, expected_offset_limits)