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* Fix code for bag-of-words feature extraction The _ml.py module had a redundant copy of a function to extract unigram bag-of-words features, except one had a bug that set values to 0. Another function allowed extraction of bigram features. Replace all three with a new function that supports arbitrary ngram sizes and also allows control of which attribute is used (e.g. ORTH, LOWER, etc). * Support 'bow' architecture for TextCategorizer This allows efficient ngram bag-of-words models, which are better when the classifier needs to run quickly, especially when the texts are long. Pass architecture="bow" to use it. The extra arguments ngram_size and attr are also available, e.g. ngram_size=2 means unigram and bigram features will be extracted. * Fix size limits in train_textcat example * Explain architectures better in docs |
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| styleguide.md | ||