code: def _to_channel_first_bias(b):
      
      channel_size = int(b.shape[0])
      new_shape = (channel_size, 1, 1)
      # new_shape = [-1, 1, 1]  # doesn't work with tensorRT
      return tf.reshape(b, new_shape)
docs: Reshape [c] to [c, 1, 1].