[1] Iris Flower Dataset:
https://en.wikipedia.org/wiki/Iris_flower_data_set
[2] MNIST Digit Data Set:
http://yann.lecun.com/exdb/mnist/
[3] 20 NG Dataset:
http://qwone.com/~jason/20Newsgroups/
[4] Clustering and Classification Notebook:
https://github.com/bhargavvader/personal/blob/master/notebooks/clustering_classing.ipynb
[5] Principal Component Analysis:
https://en.wikipedia.org/wiki/Principal_component_analysis
[6] K-Means Clustering:
https://en.wikipedia.org/wiki/K-means_clustering
[7] scikit-learn k-means:
http://scikit-learn.org/stable/modules/clustering.html#k-means
[8] scikit-learn clustering:
http://scikit-learn.org/stable/modules/clustering.html
[9] Ward's Method:
https://en.wikipedia.org/wiki/Ward's_method
[10] Dendrogram:
https://en.wikipedia.org/wiki/Dendrogram#Clustering_example
[11] Document Clustering:
http://brandonrose.org/clustering...
