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Effective Amazon Machine Learning by Alexis Perrier

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Using simple transformations

The lowercase transformation takes a text variable as input and returns the text in lowercase: Amazon ML is great for Predictive Analytics is returned as amazon ml is great for predictive analytics. Syntax for lowercase transformation is lowercase(text_variable) or lowercase(group_of_text_variables).

The remove punctuation transformation also takes a text variable as input and removes all punctuation signs, with the exception of hyphens within words (seat-belts will remain as seat-belts). It is not possible to define your own set of punctuation signs. Syntax for the remove punctuation transformation is no_punct(text_variable) or no_punct(group_of_text_variables).

The normalization transformation normalizes numeric ...

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