Key Lab of Intell. Info. Process. (CAS), Inst. of Comput. Tech., CAS, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; State Key Lab. of Computer Science, Inst. of Software, CAS, Beijing, China
Li Shen, Shuhui Wang, Gang Sun, Shuqiang Jiang, Qingming Huang
Multi-level Discriminative Dictionary Learning towards Hierarchical Visual Categorization