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Improving the performance of querying multidimensional RDF data using aggregates

Ravat, Franck and Song, Jiefu and Teste, Olivier and Trojahn dos Santos, Cassia Improving the performance of querying multidimensional RDF data using aggregates. (2019) In: 34th ACM/SIGAPP Symposium on Applied Computing (SAC 2019), 8 April 2019 - 12 April 2019 (Limassol, Cyprus).

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Official URL: https://doi.org/10.1145/3297280.3297506

Abstract

In this paper, we propose a novel approach to tackle the problem of querying large volume of statistical RDF cubes. Our approach relies on combining pre-aggregation strategies and the performance of NoSQL engines to represent and manage statistical RDF data. Specifically, we define a conceptual modeling solution to represent original RDF data with aggregates in a multidimensional structure. We complete the conceptual modeling with a logical design process based on well-known multidimensional RDF graph and property-graph representations. We implement our proposed model in RDF triple stores and a property-graph NoSQL database, and we compare the querying performance, with and without aggregates. Experimental results, on real-world datasets containing 81.92 million triplets, show that pre-aggregation allows reducing query runtime in both RDF triple stores and property-graph NoSQL databases. Neo4j NoSQL database with aggregates outperforms RDF Jena TDB2 and Virtuoso triple stores, speeding up to 99% query runtime.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to ACM. The definitive version is available at http://dl.acm.org This papers appears in SAC '19 ISBN:978-1-4503-5933-7 The original PDF is available at: https://dl.acm.org/doi/10.1145/3297280.3297506
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited On:02 Mar 2020 12:30

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