Information Retrieval Technology 7th Asia Information Retrieval Societies Conference, AIRS 2011, Dubai, United Arab Emirates, December 18-20, 2011. Proceedings - Salem, Mohamed Vall Mohamed; Shaalan, Khaled; Oroumchian, Farhad; Shakery, Azadeh; Khelalfa, Halim (Springer Berlin Heidelberg : Imprint: Springer, 2011)