1. S. Lazebnik, C. Schmid, J. Ponce, Beyond bags of features: spatial pyramid matching for recognizing natural scene categories, in: CVPR, 2006.
2. L. Liu, L. Wang, X. Liu, In defense of soft-assignment coding, in: ICCV, 2011.
3. J. Yang, K. Yu, Y. Gong, T. Huang, Linear spatial pyramid matching using sparse coding for image classification, in: CVPR, 2009.
4. J. Wang, J. Yang, K. Yu, F. Lv, T. Huang, Y. Gong, Locality-constrained linear coding for image classification, in: CVPR, 2010.
5. J.C. van Gemert, J.M. Geusebroek, C.J. Veenman, A.W. Smeulders, Kernel codebooks for scene categorization, in: ECCV, 2008.