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FlexRecs: Expressing and Combining Flexible Recommendations

Koutrika, Georgia and Bercovitz, Benjamin and Garcia-Molina, Hector (2009) FlexRecs: Expressing and Combining Flexible Recommendations. In: SIGMOD 2009, June 29th to July 2, 2009, Providence, Rhode Island.


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Recommendation systems have become very popular but most recommendation methods are ‘hard-wired’ into the system making experimentation with and implementation of new recommendation paradigms cumbersome. In this paper, we propose FlexRecs, a framework that decouples the definition of a recommendation process from its execution and supports flexible recommendations over structured data. In FlexRecs, a recommendation approach can be defined declaratively as a high-level parameterized workflow comprising traditional relational operators and new operators that generate or combine recommendations. We describe a prototype flexible recommendation engine that realizes the proposed framework and we present example workflows and experimental results that show its potential for capturing multiple, existing or novel, recommendations easily and having a flexible recommendation system that combines extensibility with reasonable performance.

Item Type:Conference or Workshop Item (Paper)
ID Code:907
Deposited By:Georgia Koutrika
Deposited On:11 Mar 2009 08:35
Last Modified:04 Aug 2009 17:18

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