Information retrieval technology 13th Asia Information Retrieval Societies Conference, AIRS 2017, Jeju Island, South Korea, November 22-24, 2017, proceedings - Sŏng, Wŏn-gyŏng; Jung, Hanmin; Xu, Shuo; Chinnasarn, Krisana; Sumiya, Kazutoshi; Lee, Jeonghoon; Dou, Zhicheng; Yang, Grace Hui; Ha, Young-Guk; Lee, Seungbock (Lecture Notes in Computer Science, 2017)