Hi Kristina,
Currently StringIndexer is a requirement step before training DecisionTree,
RandomForest and GBT related models.
Though it does not necessary by other models such as LogisticRegression and
NaiveBayes, it also strongly recommend to make this preprocessing step
otherwise it may lead
Hi,
I'm trying out the ml.classification.RandomForestClassifer() on a simple
dataframe and it returns an exception that number of classes has not been
set in my dataframe. However, I cannot find a function that would set
number of classes, or pass it as an argument anywhere. In mllib, numClasses
