Recommender systems, also known as recommendation engines, are algorithms and software tools that make personalized user recommendations. These recommendations can consider the preferences and interests of each user, as well as the behavior and feedback of other users. Recommender systems are commonly used in online platforms and services. Examples, are e-commerce websites, media streaming platforms, and social networks. Recommenders enable these services to help users discover new products, content, or relevant connections.
There are many different types of recommender systems. Some common types include:
Content-based recommenders: these systems recommend items based on their content, such as their keywords, tags, or categories. They use the user’s past preferences and ratings to identify similar things that the user may be interested in.
Collaborative filtering recommenders: these systems recommend items based on the preferences and ratings of similar users. They use k-nearest neighbors or matrix factorization algorithms to identify other users with similar interests and recommend items that are popular among these users.
Hybrid recommenders: these systems combine different types of recommenders, such as content-based and collaborative filtering, to generate more accurate and personalized recommendations.
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