C-SPARQL : A Continuous Query Language for RDF Data Streams

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BARBIERI, Davide Francesco, Daniele BRAGA, Stefano CERI, Emanuele DELLA VALLE, Michael GROSSNIKLAUS, 2010. C-SPARQL : A Continuous Query Language for RDF Data Streams. In: International Journal of Semantic Computing. 04(01), pp. 3-25. ISSN 1793-351X. eISSN 1793-7108

@article{Barbieri2010-03C-SPA-33582, title={C-SPARQL : A Continuous Query Language for RDF Data Streams}, year={2010}, doi={10.1142/S1793351X10000936}, number={01}, volume={04}, issn={1793-351X}, journal={International Journal of Semantic Computing}, pages={3--25}, author={Barbieri, Davide Francesco and Braga, Daniele and Ceri, Stefano and Della Valle, Emanuele and Grossniklaus, Michael} }

eng Grossniklaus, Michael Della Valle, Emanuele 2016-04-13T14:47:31Z Della Valle, Emanuele Barbieri, Davide Francesco Braga, Daniele Barbieri, Davide Francesco Ceri, Stefano 2010-03 C-SPARQL : A Continuous Query Language for RDF Data Streams Grossniklaus, Michael Ceri, Stefano 2016-04-13T14:47:31Z This article defines C-SPARQL, an extension of SPARQL whose distinguishing feature is the support of continuous queries, i.e. queries registered over RDF data streams and then continuously executed. Queries consider windows, i.e. the most recent triples of such streams, observed while data is continuously flowing. Supporting streams in RDF format guarantees interoperability and opens up important applications, in which reasoners can deal with evolving knowledge over time.<br /><br />C-SPARQL is presented by means of a full specification of the syntax, a formal semantics, and a comprehensive set of examples, relative to urban computing applications, that systematically cover the SPARQL extensions. The expression of meaningful queries over streaming data is strictly connected to the availability of aggregation primitives, thus C-SPARQL also includes extensions in this respect. Braga, Daniele

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