old_contents: Config(
      net=Config(attention_type='hybrid2',
                 shift_predictor_dims=[100],
                 max_left=10,
                 max_right=100),
      initialization=[
          ("/recognizer", "rec_weights_init", "IsotropicGaussian(0.1)"),
          ("/recognizer/generator/att_trans/hybrid_att/loc_att",
           "weights_init", "IsotropicGaussian(0.01)"),
          ("/recognizer/generator/att_trans/hybrid_att/loc_att",
           "biases_init", "IsotropicGaussian(5.0)")],
      data=Config(normalization="norm.pkl"))
  
new_contents: Config(
      net=Config(dec_transition='GatedRecurrent',
                 enc_transition='GatedRecurrent',
                 attention_type='hybrid2',
                 shift_predictor_dims=[100],
                 max_left=10,
                 max_right=100),
      initialization=[
          ("/recognizer", "rec_weights_init", "IsotropicGaussian(0.1)"),
          ("/recognizer/generator/att_trans/hybrid_att/loc_att",
           "weights_init", "IsotropicGaussian(0.001)"),
          ("/recognizer/generator/att_trans/hybrid_att/loc_att",
           "biases_init", "IsotropicGaussian(5.0)")],
      data=Config(normalization="norm.pkl"))
  
subject: Fix hybrid2, but it is still no use