from tensorflow.contrib.learn.python.learn.estimators import composable_model

    """
    super(_DNNLinearCombinedBaseEstimator, self).__init__(
        model_dir=model_dir, config=config)

    num_ps_replicas = config.num_ps_replicas if config else 0

    self._linear_model = composable_model.LinearComposableModel(
        num_label_columns=target_column.num_label_columns,
        optimizer=linear_optimizer,
        gradient_clip_norm=gradient_clip_norm,
        num_ps_replicas=num_ps_replicas)

