youtube.com/user/WekaMOOC
http://pages.cs.wisc.edu/~bolo/shipyard/neural/local.html
https://www.cse.unr.edu/~bebis/MathMethods/NNs/lecture.pdf
http://www.dhtusa.com/media/NeuralNetworkIntro.pdf
back-propagation: http://www.cse.unsw.edu.au/~cs9417ml/MLP2/
https://www.youtube.com/watch?v=aVId8KMsdUU
Data Mining Concept and Technique
Hadoop: https://people.cs.kuleuven.be/~joost.vennekens/DN/bigdata.pdf