Trends and Applications in Knowledge Discovery and Data Mining PAKDD 2019 Workshops, BDM, DLKT, LDRC, PAISI, WeL, Macau, China, April 14-17, 2019, Revised Selected Papers - U., Leong Hou; U., Leong Hou; Lauw, Hady W.; Lauw, Hady W. (Springer International Publishing : Imprint: Springer, 2019)