Advances in Knowledge Discovery and Data Mining: 19th Pacific-Asia Conference, PAKDD 2015, Ho Chi Minh City, Vietnam, May 19-22, 2015, Proceedings, Part I - Cao; Cheung, David; Ho, Tu Bao; Lim, Ee-Peng; Motoda, Hiroshi; Zhou, Zhi-Hua (Springer International Publishing, 2015)