Abstract
Recommender Systems (RSs) have emerged as powerful tools to provide the users with personalized recommendations and to guide them in their decision making process. Among the various recommendation approaches, Collaborative Filtering (CF) is considered as one of the most popular techniques in RSs. CF techniques are categorized into model-based and memory-based. Model-based approaches consist in learning a model from past ratings to perform predictions while memory-based ones predict ratings by selecting the most similar users (user-based) or the most similar items (item-based). In both types, recommendations are fully based on users’ past ratings. However, aside from users’ ratings, exploiting additional information such as items’ features would enhance the accuracy of the provided predictions. Another crucial challenge in the RSs area would be to handle uncertainty arising throughout the prediction process. That is why, in this paper, we propose an item-based Collaborative Filtering under the belief function theory that not only takes advantages of both model- and memory- based CF approaches but also integrates items’ contents in the recommendation process.
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Abdelkhalek, R., Boukhris, I., Elouedi, Z. (2018). An Evidential Collaborative Filtering Approach Based on Items Contents Clustering. In: Destercke, S., Denoeux, T., Cuzzolin, F., Martin, A. (eds) Belief Functions: Theory and Applications. BELIEF 2018. Lecture Notes in Computer Science(), vol 11069. Springer, Cham. https://doi.org/10.1007/978-3-319-99383-6_1
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