Paper referenced in lesson: Fernandez-Delgado, Manuel, Eva Cernadas, Senen Barro and Dinani Amorim, "Do We Need Hundreds of Classifiers to Solve Real World Classification Problems?" -- Journal of Machine Learning Research 15 (2014) http://jmlr.csail.mit.edu/papers/volume15/delgado14a/delgado14a.pdf