def __init__(self, fm_decoder, n_iter=5, test_size=0.2, train_size=None,
              random_state=None):
     self.fm_decoder = fm_decoder
     StratifiedShuffleSplit.__init__(
         self,
         n_iter=n_iter,
         test_size=test_size,
         train_size=train_size,
         random_state=random_state)