Web and Big Data Third International Joint Conference, APWeb-WAIM 2019, Chengdu, China, August 1-3, 2019, Proceedings, Part II - Shao, Jie; Shao, Jie; Yiu, Man Lung; Yiu, Man Lung; Toyoda, Masashi; Toyoda, Masashi; Zhang, Dongxiang; Zhang, Dongxiang; Wang, Wei; Wang, Wei; Cui, Bin; Cui, Bin (Springer International Publishing : Imprint: Springer, 2019)