Before revision: A recommender system, or a recommendation system (sometimes replacing "system " with terms such as "platform", "engine", or "algorithm" ), is a subclass of information filtering system that provides suggestions for items that are most pertinent to a particular user.
After revision: A recommender system, or a recommendation system (sometimes replacing system with terms such as platform, engine, or algorithm ), is a subclass of information filtering system that provides suggestions for items that are most pertinent to a particular user.