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Multiverse recommendation: n-dimensional tensor factorization for context-aware collaborative filtering

Karatzoglou, Alexandros, Amatriain, Xavier, Baltrunas, Linas, Oliver, Nuria·2010·Proceedings of the fourth ACM conference on Recommender systems

Abstract

Context has been recognized as an important factor to consider in personalized Recommender Systems. However, most model-based Collaborative Filtering approaches such as Matrix Factorization do not provide a straightforward way of integrating context information into the model. In this work, we introduce a Collaborative Filtering method based on Tensor Factorization, a generalization of Matrix Factorization that allows for a flexible and generic integration of contextual information by modeling the data as a User-Item-Context N-dimensional tensor instead of the traditional 2D User-Item matrix. In the proposed model, called Multiverse Recommendation, different types of context are considered as additional dimensions in the representation of the data as a tensor. The factorization of this tensor leads to a compact model of the data which can be used to provide context-aware recommendations.

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Metadata

Authors
Karatzoglou, A., Amatriain, X., Baltrunas, L., & Oliver, N.
Venue
Proceedings of the fourth ACM conference on Recommender systems
Publisher
ACM
Published
2010-09-26
Pages
79-86
OpenAlex
W2102937240
Cited by
721
References
18
FWCI
16.87
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Multiverse recommendation: n-dimensional tensor factorization for context-aware collaborative filtering. https://app.cochat.ai/papers/10.1145/1864708.1864727
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Karatzoglou, A., Amatriain, X., Baltrunas, L., & Oliver, N. (2010). Multiverse recommendation: n-dimensional tensor factorization for context-aware collaborative filtering. Proceedings of the fourth ACM conference on Recommender systems. https://doi.org/10.1145/1864708.1864727

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