Artificial Intelligence and Mobile Services – AIMS 2020: 9th International Conference, Held as Part of the Services Conference Federation, SCF 2020, Honolulu, HI, USA, September 18–20, 2020, Proceedings - Xu; Bai, Yongsheng; De, Wang; Tian, Ling; Zhang, Liang-Jie; Zhong, Wei (Springer International Publishing, 2020)