title: Random forest does not seem to handle more than 32 categories of factors. What do I do to include these factors in training my model?
body: <p>I am trying to train Random forest on my training data which has predictors like 'names', 'city'. These two predictors have more than 32 categories. What do I do to include them? </p>
  
  <p>Even some other algorithms does not seem to handle larger categories like SVM or gbm. </p>