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Recently, I found several web site have something like : “Recommended for You”, for example youtube, or facebook, the web site can study my using behavior, and recommend some content for me… …I would like to know how they analysis this information? Is there any Algorithm to do so? Thank you.
Amazon and Netflix (among others) use a technique called Collaborative filtering to suggest things you might like based on the likes/dislikes of others who have made purchases and selections similar to yours.