9Cover T M, Hart P E. Nearest neighbor pattern classification [J]. IEEE Transactions on Information Theory, 1967, IT-13(1) :21 - 27.
10Verbeek J, Triggs B. Region classification with Markov field aspect models [C]//Proceedings of Conference on Computer Vision and Pattern Recognition. Montbonnot, France: INRIA Press, 2007: 1 - 8.