Answer by htl for Pandas replace rare values in a pipeline
You could use scikit-learn's TransformerMixin which provides an implementation of fit_transform for you (its implementation is available here for interest).I'd consider renaming...
View ArticlePandas replace rare values in a pipeline
A common preprocessing in machine learning consists in replacing rare values in the data by a label stating "rare". So that subsequent learning algorithms will not try to generalize a value with few...
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