List<Review> data = dataConn.getReviewsNo(20000);
System.out.println("Datasize " + data.size());
print("Empty Feature");
features.add(new EmptyFeature());
cv.multiValidate(features, trainer, 10, data, null, 0);
print("Statement Count");
features.add(new StatementCountFeature());
cv.multiValidate(features, trainer, 10, data, null, 0);