Chapter 4
[4:1] Unsupervised Learning, P. Dayan - The MIT Encyclopedia of the Cognitive Sciences, Wilson & Kiel editors 1998 - http://www.gatsby.ucl.ac.uk/~dayan/papers/dun99b.pdf
[4:2] Learning Vector Quantization (LVQ): Introduction to Neural Computation, J. Bullinaria – 2007 - http://www.cs.bham.ac.uk/~pxt/NC/lvq_jb.pdf
[4:3] The Elements of Statistical Learning: Data Mining, Inference and Prediction §14.3 Cluster Analysis, T. Hastie, R. Tibshirani, J. Friedman - Springer 2001
[4:4] Efficient and Fast Initialization Algorithm for K-means Clustering, International Journal of Intelligent Systems and Applications – M. Agha, W. Ashour - Islamic University of Gaza 2012 - http://www.mecs-press.org/ijisa/ijisa-v4-n1/IJISA-V4-N1-3.pdf
[4:5] A Comparative Study of Efficient Initialization Methods for the K-Means Clustering Algorithms, M E. Celebi, H. Kingravi, P Vela – 2012 - http://arxiv.org/pdf/1209.1960v1.pdf
[4:6] Machine Learning: A Probabilistic Perspective...