Exploring More Realistic Evaluation Measures for Collaborative Filtering

Giuseppe Carenini and Rita Sharma

Collaborative filtering is a popular technique for recommending items to people. Several methods for collaborative filtering have been proposed in the literature and the quality of their predictions compared in empirical studies. In this paper, we argue that the measures of quality used in these studies are based on rather simple assumptions. We propose and apply additional measures for comparing the effectiveness of collaborative filtering methods which are grounded in decision-theory.


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