RCQ-GA : RDF chain query optimization using genetic algorithms

A.C. Hogenboom, D.V. Milea, F. Frasincar, U. Kaymak

Research output: Chapter in Book/Report/Conference proceedingChapterAcademic

18 Citations (Scopus)

Abstract

The application of Semantic Web technologies in an Electronic Commerce environment implies a need for good support tools. Fast query engines are needed for efficient querying of large amounts of data, usually represented using RDF. We focus on optimizing a special class of SPARQL queries, the so-called RDF chain queries. For this purpose, we devise a genetic algorithm called RCQ-GA that determines the order in which joins need to be performed for an efficient evaluation of RDF chain queries. The approach is benchmarked against a twophase optimization algorithm, previously proposed in literature. The more complex a query is, the more RCQ-GA outperforms the benchmark in solution quality, execution time needed, and consistency of solution quality. When the algorithms are constrained by a time limit, the overall performance of RCQ-GA compared to the benchmark further improves.
Original languageEnglish
Title of host publicationE-commerce and Web Technologies ( 10th International Conference, EC-WEB 2009, Linz, Austria, September 1-4, 2009, Proceedings)
EditorsT. Noia, Di, F. Buccafurri
Place of PublicationBerlin
PublisherSpringer
Pages181-192
DOIs
Publication statusPublished - 2009

Publication series

NameLecture Notes in Computer Science
Volume5692

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