Advances in Knowledge Discovery and Data Mining 23rd Pacific-Asia Conference, PAKDD 2019, Macau, China, April 14-17, 2019, Proceedings, Part I - Yang, Qiang; Yang, Qiang; Zhou, Zhi-Hua; Zhou, Zhi-Hua; Gong, Zhiguo; Gong, Zhiguo; Zhang, Min-Ling; Zhang, Min-Ling; Huang, Sheng-Jun; Huang, Sheng-Jun (Springer International Publishing : Imprint: Springer, 2019)