Background readings:
C. Dance, J. Willamowski, L. Fan, C. Bray, and G. Csurka, "Visual categorization with bags of keypoints," in ECCV International Workshop on Statistical Learning in Computer Vision, 2004. http://www.cs.cmu.edu/~efros/courses/LBMV07/Papers/csurka-eccv-04.pdf
K. Grauman and T. Darrell, "The pyramid match kernel: discriminative classification with sets of image features," ICCV, vol. 2, 2005, pp. 1458-1465 Vol. 2. http://dx.doi.org/10.1109/ICCV.2005.239
S. Lazebnik, C. Schmid, and J. Ponce, "Beyond bags of features: Spatial pyramid matching for recognizing natural scene categories," CVPR, vol. 2, 2006, pp. 2169-2178. http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1641019
Contemporary readings:
S. Maji and A. C. Berg, "Max-margin additive classifiers for detection", ICCV 2009, http://dx.doi.org/10.1109/ICCV.2009.5459203
A. Vedaldi and A. Zisserman, "Efficient Additive Kernels via Explicit Feature Maps", CVPR 2010, http://dx.doi.org/10.1109/CVPR.2010.5539949
A. Kovashka and K. Grauman, "Learning a hierarchy of discriminative space-time neighborhood features for human action recognition", CVPR 2010, http://dx.doi.org/10.1109/CVPR.2010.5539881