* слайды доклада по рекомендационной системе нетфликса
[Recommender Systems (Machine Learning Summer School 2014 @ CMU)](http://www.slideshare.net/xamat/recommender-systems-machine-learning-summer-school-2014-cmu)
+* [An Interactive Tutorial on Numerical Optimization] (http://www.benfrederickson.com/numerical-optimization/)
