Recommendation systems on my mind

Source: http://info.cunyba.gc.cuny.edu/blog/bid/296342/10-Tips-for-Requesting-an-Academic-Letter-of-Recommendation

I've got recommendation systems on the brain today. Here are links to the sources I've been finding most helpful.

• You probably shouldn't build a recommendation system at all, actually.

• If you insist, here's chapter 9 from Mining Massive Datasets
• Actually, Jeff Ullman has some pretty awesome stuff up in general.

• A good lit review on collaborative filtering algorithms