FlexRecs: Expressing and Combining Flexible Recommendations

Summary: Declarative, parameterized workflows over relational operators to express recommendations; separates definition from execution. FlexRecs adds new operators to generate and merge recommendations on structured data, with a prototype demonstrating cross-paradigm composability and practical performance. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 4223
Venue: SIGMOD
Year: 2009
Pagerank: 7.815276e-05
Overall Rank: 3,048 | 79.09%
DOI: 10.1145/1559845.1559923

Incoming Non-self Citations Over Time

Authors

1. Georgia Koutrika (Stanford University)
2. Benjamin Bercovitz (Stanford University)
3. Hector Garcia-Molina (Stanford University)

BibTeX Citation

@inproceedings{koutrika_sigmod09,
        title = {{FlexRecs: Expressing and Combining Flexible Recommendations}},
        author = {Koutrika, Georgia and Bercovitz, Benjamin and Garcia-Molina, Hector},
        series = {{SIGMOD} '09},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/1559845.1559923},
        url = {https://dl.acm.org/doi/10.1145/1559845.1559923},
        year = {2009}
}

Incoming Citations (Sorted by Pagerank)

Showing 7 of 7 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
3,596	On the Complexity of Query Result Diversification	2013	VLDB	7.2722683e-05
5,544	RecDB in Action: Recommendation Made Easy in Relational Databases	2013	VLDB	6.180013e-05
8,028	On the Complexity of Package Recommendation Problems	2012	PODS	5.504636e-05
12,206	Generating Top-k Packages via Preference Elicitation	2014	VLDB	5.093636e-05
12,406	RecBench: Benchmarks for Evaluating Performance of Recommender System Architectures	2011	VLDB	5.093636e-05
12,419	Multiple Feature Fusion for Social Media Applications	2010	SIGMOD	5.093636e-05
12,542	Goal-Oriented Web-site Navigation for On-line Shoppers	2009	VLDB	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 0 of 0 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank

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