private Map<Integer, Integer> getCategoricalFeatureInfo(List<Map<String, Integer>> encodings) {
Map<Integer, Integer> info = new HashMap<Integer, Integer>();
// skip the response variable which is at last
for (int i = 0; i < encodings.size() - 1; i++) {
if (encodings.get(i).size() > 0) {
info.put(i, encodings.get(i).size());
}
}
return info;
}
