Knowledge Graph and Semantic Computing: Knowledge Computing and Language Understanding 4th China Conference, CCKS 2019, Hangzhou, China, August 24-27, 2019, Revised Selected Papers - Zhu, Xiaoyan; Zhu, Xiaoyan; Qin, Bing; Qin, Bing; Zhu, Xiaodan; Zhu, Xiaodan; Liu, Ming; Liu, Ming; Qian, Longhua; Qian, Longhua (Springer Singapore : Imprint: Springer, 2019)