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Different types of recommender systems
Content-based uses the content information of the items for building the recommendation model .
Collaborative filtering : is a technique used to make automatic predictions about the preference of a user derived by analyzing the preferences of other users that have similar interests
Hybrid methods: this recommendation is built by integrating many recommender systems for greater reliability
For example, Collaborative filtering, which fails when new things don't have ratings, can be used with content-based systems, which provide feature information.
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