I am currently looking for a decent comprehensive study on them. So far I have found this slide deck from netflix to be pretty good [1]. Do you have any suggest

I am currently looking for a decent comprehensive study on them. So far I have found this slide deck from netflix to be pretty good [1]. Do you have any suggestions? [1] http://www.slideshare.net/xamat/recommender-systems-machine-learning-summer-school-2014-cmu http://www.slideshare.net/xamat/recommender-systems-machine-...