def METHOD_NAME(self, users, pos_items, neg_items):
    users_emb = self.embedding_user.weight
    items_emb = self.embedding_item.weight
    all_users, all_items = self.ngcf(self.Graph, users_emb, items_emb)
    users_emb = paddle.index_select(all_users, users)
    pos_emb = paddle.index_select(all_items, pos_items)
    neg_emb = paddle.index_select(all_items, neg_items)
    return users_emb, pos_emb, neg_emb