 load benchmarks.mat diabetis
  TRAIN = diabetis.x(diabetis.train(K,:),:)';
  TRAIN_CL = diabetis.t( diabetis.train(K,:));
  TEST  =diabetis.x( diabetis.test(K,:),:)';
  TEST_CL  =  diabetis.t( diabetis.test(K,:));
