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Unifying Colloborative and Content-Based Filtering.
Collaborative and content-based filtering are two paradigms that have been applied in the context of recommender systems and user preference prediction. This paper proposes a novel, unified approach that systematically integrates all available training information such as past user-item ratings as well as attributes of items or users to learn a prediction function. The key ingredient of our method is the design of a suitable kernel or similarity function between user-item pairs that allows simultaneous generalization across the user and item dimensions. We propose an on-line algorithm (JRank) that generalizes perceptron learning. Experimental results on the EachMovie data set show significant improvements over standard approaches.
@inproceedings{2739, title = {Unifying Colloborative and Content-Based Filtering.}, journal = {Proceedings of the 21st International Conference on Machine Learning}, booktitle = {ACM International Conference Proceeding Series}, abstract = {Collaborative and content-based filtering are two paradigms that have been applied in the context of recommender systems and user preference prediction. This paper proposes a novel, unified approach that systematically integrates all available training information such as past user-item ratings as well as attributes of items or users to learn a prediction function. The key ingredient of our method is the design of a suitable kernel or similarity function between user-item pairs that allows simultaneous generalization across the user and item dimensions. We propose an on-line algorithm (JRank) that generalizes perceptron learning. Experimental results on the EachMovie data set show significant improvements over standard approaches.}, pages = {65 }, editors = {Greiner, R. , D. Schuurmans}, publisher = {ACM Press}, organization = {Max-Planck-Gesellschaft}, institution = {Max-Planck for biological Cybernetics, Tübingen, Germany}, school = {Biologische Kybernetik}, address = {New York, USA}, year = {2004}, slug = {2739}, author = {Basilico, J. and Hofmann, T.} }