Homework 5: Social networking and recommendation systems

Background

Recommendation systems

Facebook suggests people you may be (or might want to be) friends with. Netflix suggests movies you might like. Amazon suggests products to buy. How do they do that? In this assignment, you will learn one simple way to make such suggestions, called collaborative filtering. The actual algorithms used by these companies are closely-guarded trade secrets.

A computer system that makes suggestions is called a recommender system. As background, there are two general approaches: collaborative filtering and content-based filtering.

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