public static DecisionTree getStumpFor(DataSet ds, String attributeName, String attributeValue, String returnValueIfMatched, List<String> unmatchedValues, String returnValueIfUnmatched) { DecisionTree dt = new DecisionTree(attributeName); dt.addLeaf(attributeValue, returnValueIfMatched); foreach (String unmatchedValue in unmatchedValues) { dt.addLeaf(unmatchedValue, returnValueIfUnmatched); } return dt; }