Algorithmic Aspects in Information and Management 13th International Conference, AAIM 2019, Beijing, China, August 6-8, 2019, Proceedings - Du, Ding-Zhu; Du, Ding-Zhu; Li, Lian; Li, Lian; Sun, Xiaoming; Sun, Xiaoming; Zhang, Jialin; Zhang, Jialin (Springer International Publishing : Imprint: Springer, 2019)