A bag of words transform represents taking a list of words and converting it to a vector where that vector is of length number of vocab words.
A gazeteer is a work lookup table based on a word list.
A multi NLP transform takes in 1 or more bag of words transforms as a pipeline and runs them in sequence.
This transform takes in a list of words and outputs a single vector where that vector is of size number of words in the vocab.
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