import tensorflow as tf

    eval_config.batch_size = 1
    eval_config.num_steps = 1

    train_graph = tf.Graph()
    eval_graph = tf.Graph()
    infer_graph = tf.Graph()
    with train_graph.as_default():
        initializer = tf.random_uniform_initializer(-config.init_scale,
                                                    config.init_scale)

