Data Science 5th International Conference of Pioneering Computer Scientists, Engineers and Educators, ICPCSEE 2019, Guilin, China, September 20-23, 2019, Proceedings, Part II - Mao, Rui; Mao, Rui; Wang, Hongzhi; Wang, Hongzhi; Xie, Xiaolan; Xie, Xiaolan; Lu, Zeguang; Lu, Zeguang (Springer Singapore : Imprint: Springer, 2019)