See also

• Good introduction to different two excellent open-source packages for hyperparameter optimization, Hyperopt and scikit-optimize: https://roamanalytics.com/2016/09/15/optimizing-the-hyperparameter-of-which-hyperparameter-optimizer-to-use/
• Another one on Hyperopt: http://fastml.com/optimizing-hyperparams-with-hyperopt/
• A detailed paper by Bengio and others on various algorithms for hyperparameter optimization:https://papers.nips.cc/paper/4443-algorithms-for-hyper-parameter-optimization.pdf