Estado del arte en los sistemas de recomendación

Recommender Systems (RS) are automatic systems which purpose is filtering information. The RS are designed to help users to find items within a specific context, for example: movies, books, research articles, etc. Their main objective is to show users recommendable items those items that RS estimates will be of interest for the user. In other words, the RS estimate the posible interest a user may have on items that have not been considered by the user. Then, with the estimations made, the RS creates a ranking of items end shows the best ranked items to the user. The main purpose of this job is to present the “state of the art” of the RS, exposing different techniques used to tackle the problem of estimating the relevance of items for a certain user.