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Practical advice on training deep nets
- http://fastml.com/deep-learning-these-days/
- https://www.reddit.com/r/MachineLearning/comments/47p2u8/is_layerwise_pretraining_obsolete/
- https://www.reddit.com/r/MachineLearning/comments/2d868l/pretraining_deep_nets_out_of_fasion/
- Imbalanced classes http://machinelearningmastery.com/tactics-to-combat-imbalanced-classes-in-your-machine-learning-dataset/
- [Scroll for Practical Advice] http://yyue.blogspot.com/2015/01/a-brief-overview-of-deep-learning.html