Results 21 to 30 of about 50 (50)
SPARQL Query Recommendations by Example [PDF]
, 2016 In this demo paper, a SPARQL Query Recommendation Tool (called SQUIRE) based on query reformulation is presented. Based on three steps, Generalization, Specialization and Evaluation, SQUIRE implements the logic of reformulating a SPARQL query that is satisfiable w.r.t a source RDF dataset, into others that are satisfiable w.r.t a target RDF dataset. In
Allocca, Carlo +3 more
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Operational Semantics for SPARQL Update [PDF]
, 2012 Concurrent fine grained updates are essential for using RDF stores in dynamic modern Web applications, where users increasingly contribute content as often as they read content. SPARQL Update is a language proposed by the W3C for fine grained updates for RDF stores.
Horne, Ross +2 more
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SPARQL playground: A block programming tool to experiment with SPARQL [PDF]
, 2015 SPARQL is a powerful query language for Semantic Web data sources but one which is quite complex to master. As the block programming paradigm has been succesfully used to teach programming skills, we propose a tool that allows users to build and run SPARQL queries on an endpoint without previous knowledge of the syntax of SPARQL and the model of the ...
BOTTONI, Paolo Gaspare +1 more
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Using SPARQL – The Practitioners’ Viewpoint [PDF]
, 2018 A number of studies have analyzed SPARQL log data to draw conclusions about how SPARQL is being used. To complement this work, a survey of SPARQL users has been undertaken. Whilst confirming some of the conclusions of the previous studies, the current work is able to provide additional insight into how users create SPARQL queries, the difficulties they
Warren, Paul, Mulholland, Paul
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SPARQL beyond Subgraph Matching [PDF]
, 2010 We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, RDFS, and OWL. The proposed extensions are part of the SPARQL 1.1 Entailment Regimes working draft which is currently being developed as part of the W3C standardization process of SPARQL 1.1.
Glimm, B, Krötzsch, M
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, 2009 SPARQL is today the standard access language for Semantic Web data. In the recent years XML databases have also acquired industrial importance due to the widespread applicability of XML in the Web. In this paper we present a framework that bridges the heterogeneity gap and creates an interoperable environment where SPARQL queries are used to access XML
Χριστοδουλακης Σταυρος(http://users.isc.tuc.gr/~schristodoulakis) +4 more
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, 2015 SPARQL has become the most popular language for querying RDF datasets, the standard data model for representing information in the Web. This query language has received a good deal of attention in the last few years: two versions of W3C standards have been issued, several SPARQL query engines have been deployed, and important theoretical foundations ...
Kostylev, Egor V. +2 more
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dlvhex-sparql: A SPARQL-compliant query engine based on dlvhex
, 2007 This paper describes the dlvhex SPARQL plugin, a query processor for the upcoming Semantic Web query language standard by W3C. We report on the implementation of this languages using dlvhex, a flexible plugin system on top of the DLV solver. This work advances our earlier translation based on the semantics by Perez et al.
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, 2017 The ability of the RDF data model to link data from heterogeneous domains has led to an explosive growth of RDF data. So, evaluating SPARQL queries over large RDF data has been crucial for the semantic web community. However, due to the graph nature of RDF data, evaluating SPARQL queries in relational databases and common data-parallel systems needs a ...
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SPARQL Extensions for processing alignments
IEEE Intelligent Systems, 2008 No abstract available.
Euzenat, Jérôme +2 more
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