def test_stems_and_filters_correctly(self):
word_processor = WordTokenizer.from_params(
Params({
'word_stemmer': {
'type': 'porter'
},
'word_filter': {
'type': 'stopwords'
}
}))
sentence = "this (sentence) has 'crazy' \"punctuation\"."
expected_tokens = ["sentenc", "ha", "crazi", "punctuat"]
tokens = word_processor.tokenize(sentence)
assert tokens == expected_tokens
def from_params(cls, params: Params) -> 'NgramWordsIndexer':
"""
Parameters
----------
namespace : ``str``, optional (default=``shared_words_vocab``)
We will use this namespace in the :class:`Vocabulary` to map the words in each token
to indices.
word_tokenizer : `WordTokenizer`, optional (default=`WordTokenizer(word_splitter=JustSpacesWordSplitter())`)
Defines the way we split ngram to words. Default is just to split by space.
"""
namespace = params.pop('namespace', 'shared_words_vocab')
word_tokenizer_params = params.pop('word_tokenizer', {})
word_tokenizer = WordTokenizer.from_params(word_tokenizer_params)
params.assert_empty(cls.__name__)
return cls(namespace=namespace, word_tokenizer=word_tokenizer)
