unknown1.addEvent(new Event("a", null));
unknown1.addEvent(new Event("little", null));
unknown1.addEvent(new Event("beta", null));
Document unknownDocument = new Document();
unknownDocument.addEventSet(null, unknown1);
//Classify unknown based on the knowns
WEKAMultilayerPerceptron tree = new WEKAMultilayerPerceptron();
List<List<Pair<String, Double>>> t = new ArrayList<List<Pair<String,Double>>>();
tree.train(knowns);