OnlineTrainer trainer = new OnlineTrainer(msolver, update, loss, af.size(), round,
c);
Linear classify = trainer.train(train, test);
String modelFile = path+".m.gz";
classify.saveTo(modelFile);
long end = System.currentTimeMillis();
System.out.println("Total Time: " + (end - start));
System.out.println("End!");
(new File(modelFile)).deleteOnExit();