def METHOD_NAME(self, is_infer=False):
    '''
    user_input = [
        paddle.static.data(
            name="item_" + str(i + 1), shape=[None, 1], dtype="int64")
        for i in range(self.item_nums)
    ]
    '''
    user_input = paddle.static.data(
        name="item_id",
        shape=[None, self.x_bert_embed_size],
        dtype="float32")
    item = paddle.static.data(
        name="unit_id", shape=[None, 1], dtype="int64")
    label = paddle.static.data(
        name="label", shape=[None, 1], dtype="int64")
    feed_list = [user_input, item, label]
    return feed_list