Learning over Sets using Kernel Principal Angles (Kernel Machines Section)
Lior Wolf and Amnon Shashua

@article{4:38,author={Lior Wolf and Amnon Shashua}, Title={Learning over Sets using Kernel Principal Angles (Kernel Machines Section)},journal={Journal of Machine Learning Research},volume={4}, url={http://www.jmlr.org/papers/volume4/mcallester03a/mcallester03a.pdf}}