On 10/22/2013 09:46 PM, ChungHung Liu wrote: > I read following links > > > http://scikit-learn.org/stable/modules/preprocessing.html#encoding-categorical-features > > http://scikit-learn.org/stable/modules/generated/sklearn.feature_extraction.DictVectorizer.html > > It seems that I should use DictVectorizer, but > You could just use ".toarray()" to create a dense matrix (if it is small enough to fit into memory). If the resulting dense matrix does not fit into memory, you currently can't use RandomForests.
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