January 2020
Beginner to intermediate
372 pages
10h
English
Content preview from Python Feature Engineering Cookbook
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We can add missing indicators using scikit-learn's SimpleImputer() by setting the add_indicator argument to True. For example, imputer = SimpleImputer(strategy=’mean’, add_indicator=True) will return a NumPy array with missing indicators, plus the missing values in the original variables were replaced by the mean after using the fit() and transform() methods.
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