Web and Big Data Second International Joint Conference, APWeb-WAIM 2018, Macau, China, July 23-25, 2018, Proceedings, Part II - Cai, Yi; Cai, Yi; Ishikawa, Yoshiharu; Ishikawa, Yoshiharu; Xu, Jianliang; Xu, Jianliang (Springer International Publishing : Imprint: Springer, 2018)