精选优质文档-倾情为你奉上外文：Introduction to Recommender SystemApproaches of Collaborative Filtering: Nearest Neighborhood and Matrix Factorization“We are leaving the age of information and entering the age of recommendation.”Like many machine learning techniques, a recommender system makes prediction based on users historical behaviors. Specifically, its to predict user preference for a set of items based on past experience. To build a recommender system, the most two popular approaches are
