Information Retrieval Technology 11th Asia Information Retrieval Societies Conference, AIRS 2015, Brisbane, QLD, Australia, December 2-4, 2015. Proceedings - Zuccon, Guido; Geva, Shlomo; Joho, Hideo; Scholer, Falk; Sun, Aixin; Zhang, Peng (Springer International Publishing : Imprint: Springer, 2015)