Choice-based recommender system

Paula Saavedra, Pablo Barreiro, Roi Durán, Rosa Crujeiras, María Loureiro and Eduardo Sánchez Vila 

Choice-based models are proposed to overcome some of the limitations found in traditional rating-based strategies. The new approach is grounded on decision-making paradigms, such as choice and utility theories. Specifically, random utility models were applied in a recommendation problem. Prediction accuracy was compared with state-of-art rating-based algorithms in a gastronomy dataset. The results show the superior performance of choice-based models, which may suggest that real choices could bring more predictive power than ratings.

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