def tokens_to_indices(self, tokens: List[str],
vocab: Vocabulary) -> Dict[str, List[int]]:
"""
Takes a list of tokens and converts them to one or more sets of indices.
During the indexing process, each item corresponds to an index in the
vocabulary.
Parameters
----------
vocab : ``Vocabulary``
``vocab`` is used to get the index of each item.
Returns
-------
res : ``Dict[str, List[int]]``
if the token and index list is [w1:5, w2:3, w3:0], the result will
be {'vocab_name' : [5, 3, 0]}
"""
res = {}
for index_name in self.related_vocabs:
index_list = [
vocab.get_token_index(self.transform(tok), index_name)
for tok in tokens
]
res[index_name] = index_list
return res
def test_extend_from_pretrained_vocab(self):
vocab = Vocabulary()
# Test extend a vocabulary from a simple pretained vocab
pretrained_vocabs = {'glove': ['a', 'b', 'c']}
vocab.extend_from_pretrained_vocab(pretrained_vocabs)
assert vocab.get_token_index('a', 'glove') == 2
assert vocab.get_token_index('c', 'glove') == 4
assert vocab.get_token_index('d', 'glove') == 0
# Test extend a vocabulary from a pretained vocabulary,
# and intersect with another vocabulary.
pretrained_vocabs = {'w2v': ['b', 'c', 'd']}
vocab.extend_from_pretrained_vocab(pretrained_vocabs, {'w2v': 'glove'})
assert vocab.get_token_index('b', 'w2v') == 2
assert vocab.get_token_index('d', 'w2v') == 0
assert vocab.get_token_from_index(2, 'w2v') == 'b'
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_from_index(4, 'w2v')
assert excinfo.type == RuntimeError
# Test extend a vocabulary from a no oov pretained vocabulary
pretrained_vocabs = {'glove_nounk': ['a', 'b', 'c']}
vocab.extend_from_pretrained_vocab(pretrained_vocabs,
no_unk_namespace={
'glove_nounk',
})
assert vocab.get_token_index('a', 'glove_nounk') == 1
assert vocab.get_token_index('c', 'glove_nounk') == 3
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('d', 'glove_nounk')
assert excinfo.type == RuntimeError
# Test extend a vocabulary from a no oov and pad pretained vocabulary
pretrained_vocabs = {'glove_nounk_nopad': ['a', 'b', 'c']}
vocab.extend_from_pretrained_vocab(
pretrained_vocabs,
no_unk_namespace={
'glove_nounk_nopad',
},
no_pad_namespace={"glove_nounk_nopad"})
assert vocab.get_token_index('a', 'glove_nounk_nopad') == 0
assert vocab.get_token_index('c', 'glove_nounk_nopad') == 2
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('d', 'glove_nounk_nopad')
assert excinfo.type == RuntimeError
def test_extend_from_counter(self):
vocab = Vocabulary()
# Test extend a vocabulary from a simple counter
counter = {'w': Counter(["This", "is", "a", "test", "sentence", '.'])}
vocab.extend_from_counter(counter)
assert vocab.get_token_index('a', 'w') == 4
assert vocab.get_token_index('.', 'w') == 7
assert vocab.get_token_index('That', 'w') == 0
# Test extend a vocabulary from a counter with min_count
counter = {'w_m': Counter(['This', 'is', 'is'])}
min_count = {'w_m': 2}
vocab.extend_from_counter(counter, min_count)
assert vocab.get_token_index('is', 'w_m') == 2
assert vocab.get_token_index('This', 'w_m') == 0
assert vocab.get_token_index('That', 'w_m') == 0
# Test extend a vocabulary from a counter without oov token
counter = {'w_nounk': Counter(['This', 'is'])}
vocab.extend_from_counter(counter, no_unk_namespace={
'w_nounk',
})
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('That', 'w_nounk')
assert excinfo.type == RuntimeError
assert vocab.get_token_index('This', 'w_nounk') == 1
# Test extend a vocabulary from a counter without pad & unk token
counter = {'w_nounk_nopad': Counter(['This', 'is', 'a'])}
vocab.extend_from_counter(counter,
no_unk_namespace={'w_nounk_nopad'},
no_pad_namespace={'w_nounk_nopad'})
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('That', 'w_nounk_nopad')
assert excinfo.type == RuntimeError
assert vocab.get_token_index('This', 'w_nounk_nopad') == 0
def tokens_to_indices(self, tokens: List[str],
vocab: Vocabulary) -> Dict[str, List[List[int]]]:
"""
Takes a list of tokens and converts them to one or more sets of indices.
During the indexing process, each token item corresponds to a list of
index in the vocabulary.
Parameters
----------
vocab : ``Vocabulary``
``vocab`` is used to get the index of each item.
"""
res = {}
for vocab_name in self.related_vocabs:
index_list = []
for token in tokens:
index_list.append([
vocab.get_token_index(self.transform(ch), vocab_name)
for ch in token
])
res[vocab_name] = index_list
return res
def test_vocabulary(self):
pretrained_vocabs = {
'glove': ['a', 'b', 'c'],
'w2v': ['b', 'c', 'd'],
'glove_nounk': ['a', 'b', 'c'],
'glove_nounk_nopad': ['a', 'b', 'c']
}
counters = {
'w': Counter(["This", "is", "a", "test", "sentence", '.']),
'w_m': Counter(['This', 'is', 'is']),
'w_nounk': Counter(['This', 'is']),
'w_nounk_nopad': Counter(['This', 'is', 'a'])
}
vocab = Vocabulary(
counters=counters,
min_count={'w_m': 2},
pretrained_vocab=pretrained_vocabs,
intersection_vocab={'w2v': 'glove'},
no_pad_namespace={'glove_nounk_nopad', 'w_nounk_nopad'},
no_unk_namespace={
'glove_nounk', 'w_nounk', 'glove_nounk_nopad', 'w_nounk_nopad'
})
# Test glove
print(vocab.get_vocab_size('glove'))
assert vocab.get_token_index('a', 'glove') == 2
assert vocab.get_token_index('c', 'glove') == 4
assert vocab.get_token_index('d', 'glove') == 0
# Test w2v
assert vocab.get_token_index('b', 'w2v') == 2
assert vocab.get_token_index('d', 'w2v') == 0
assert vocab.get_token_from_index(2, 'w2v') == 'b'
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_from_index(4, 'w2v')
assert excinfo.type == RuntimeError
# Test glove_nounk
assert vocab.get_token_index('a', 'glove_nounk') == 1
assert vocab.get_token_index('c', 'glove_nounk') == 3
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('d', 'glove_nounk')
assert excinfo.type == RuntimeError
# Test glove_nounk_nopad
assert vocab.get_token_index('a', 'glove_nounk_nopad') == 0
assert vocab.get_token_index('c', 'glove_nounk_nopad') == 2
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('d', 'glove_nounk_nopad')
assert excinfo.type == RuntimeError
# Test w
assert vocab.get_token_index('a', 'w') == 4
assert vocab.get_token_index('.', 'w') == 7
assert vocab.get_token_index('That', 'w') == 0
# Test w_m
assert vocab.get_token_index('is', 'w_m') == 2
assert vocab.get_token_index('This', 'w_m') == 0
assert vocab.get_token_index('That', 'w_m') == 0
# Test w_nounk
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('That', 'w_nounk')
assert excinfo.type == RuntimeError
assert vocab.get_token_index('This', 'w_nounk') == 1
# Test w_nounk_nopad
with pytest.raises(RuntimeError) as excinfo:
vocab.get_token_index('That', 'w_nounk_nopad')
assert excinfo.type == RuntimeError
assert vocab.get_token_index('This', 'w_nounk_nopad') == 0