Information Retrieval Technology 12th Asia Information Retrieval Societies Conference, AIRS 2016, Beijing, China, November 30 – December 2, 2016, Proceedings - Ma, Shaoping; Wen, Ji-Rong; Liu, Yiqun; Dou, Zhicheng; Zhang, Min; Chang, Yi; Zhao, Xin (Springer International Publishing : Imprint: Springer, 2016)