import tensorflow as tf

    """
    label_smoothing = 0.

    def inputs(self):
        return [tf.TensorSpec([None, self.image_shape, self.image_shape, 3], self.image_dtype, 'input'),
                tf.TensorSpec([None], tf.int32, 'label')]

    def build_graph(self, image, label):
        image = self.image_preprocess(image)
        assert self.data_format in ['NCHW', 'NHWC']
