Multidimensional Recommender Systems: A Data Warehousing Approach

  • Adomavicius G
  • Tuzhilin A
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Abstract

In this paper, we present a new data-warehousing-based approach to recommender systems. In particular, we propose to extend traditional two-dimensional user/item recommender systems to support multiple dimensions, as well as comprehensive profiling and hierarchical aggregation (OLAP) capabilities. We also introduce a new recommendation query language RQL that can express complex recommendations taking into account the proposed extensions. We describe how these extensions are integrated into a framework that facilitates more flexible and comprehensive user interactions with recommender systems.

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Authors

  • Gediminas Adomavicius

  • Alexander Tuzhilin

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