A Taxonomy of Collaborative-based Recommender Systems

The explosive growth in the amount of information available in the WWW and the emergence of e-commerce in recent years has demanded new ways to deliver personalized content. Recommender systems [51] have emerged in this context as a solution based on collective intelligence to either predict whether a particular user will like a particular item or identify the collection of items that will be of interest to a certain user. Recommender systems have an excellent ability to characterize and recommend items within huge collections of data, what makes them a computerized alternative to human recommendations. Since useful personalized recommendations can add value to the user experience, some of the largest e-commerce web sites include recommender engines. Three well known examples are Amazon.com [1], LastFM [4] and Netflix [6].

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