Federating queries in SPARQL 1.1: syntax, semantics and evaluation

Buil-Aranda, C. and Arenas, M. and Corcho, Oscar and Polleres, Axel (2013). Federating queries in SPARQL 1.1: syntax, semantics and evaluation. "Journal of Web Semantics", v. 18 (n. 1); pp. 1-17. ISSN 1570-8268. https://doi.org/10.1016/j.websem.2012.10.001.

Description

Title: Federating queries in SPARQL 1.1: syntax, semantics and evaluation
Author/s:
  • Buil-Aranda, C.
  • Arenas, M.
  • Corcho, Oscar
  • Polleres, Axel
Item Type: Article
Título de Revista/Publicación: Journal of Web Semantics
Date: 2013
Volume: 18
Subjects:
Freetext Keywords: SPARQL 1.1 - Distributed Data Management - Distributed Query Processing - RDF
Faculty: Facultad de Informática (UPM)
Department: Inteligencia Artificial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Given the sustained growth that we are experiencing in the number of SPARQL endpoints available, the need to be able to send federated SPARQL queries across these has also grown. To address this use case, the W3C SPARQL working group is defining a federation extension for SPARQL 1.1 which allows for combining graph patterns that can be evaluated over several endpoints within a single query. In this paper, we describe the syntax of that extension and formalize its semantics. Additionally, we describe how a query evaluation system can be implemented for that federation extension, describing some static optimization techniques and reusing a query engine used for data-intensive science, so as to deal with large amounts of intermediate and final results. Finally we carry out a series of experiments that show that our optimizations speed up the federated query evaluation process.

More information

Item ID: 29168
DC Identifier: http://oa.upm.es/29168/
OAI Identifier: oai:oa.upm.es:29168
DOI: 10.1016/j.websem.2012.10.001
Official URL: http://www.journals.elsevier.com/journal-of-web-semantics/
Deposited by: Memoria Investigacion
Deposited on: 12 Jun 2014 13:16
Last Modified: 23 Nov 2017 10:33
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