Shiliang Zhang Qingming Huang Gang Hua Shuqiang Jiang Wen Gao Qi Tian Building contextual visual vocabulary for large-scale image applications. 501-510 2010 ACM Multimedia http://doi.acm.org/10.1145/1873951.1874018 conf/mm/2010 db/conf/mm/mm2010.html#ZhangHHJGT10