System.out.print("Loading model...\n");
knn =KNNClassifier.loadFrom(knnModelFile);
System.out.print("..Loading model compelte!\n");
System.out.println("Testing Knn...\n");
int count=0;
fs.fS_CS(tf, 0.1f);
knn.setFs(fs);
for(int i=0;i<testset.size();i++){
Instance data = testset.getInstance(i);
Integer gold = (Integer) data.getTarget();
Predict<String> pres=(Predict<String>) knn.classify(data, Type.STRING, 3);