Results 121 to 130 of about 32,178 (242)
Semantic Web, 2015 The need for recursive queries in the Semantic Web setting is becoming more and more apparent with the emergence of datasets where different pieces of information are connected by complicated patterns. This was acknowledged by the W3C committee by the inclusion of property paths in the SPARQL standard.
Reutter, Juan L. +2 more
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Path Index Based Keywords to SPARQL Query Transformation for Semantic Data Federations
The International Journal on Advances in ICT for Emerging Regions, 2016 Semantic web is a highly emerging research domain. Enhancing the ability of keyword query processing on Semantic Web data provides a huge support for familiarizing the usefulness of Semantic Web to the general public.
Thilini Cooray, Gihan Wikramanayake
doaj +1 more source
Semantic Web Approach to Ease Regulation Compliance Checking in Construction Industry
Future Internet, 2012 Regulations in the Building Industry are becoming increasingly complex and involve more than one technical area, covering products, components and project implementations.
Bruno Fies +4 more
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Processing SPARQL queries with regular expressions in RDF databases
BMC Bioinformatics, 2011 Background As the Resource Description Framework (RDF) data model is widely used for modeling and sharing a lot of online bioinformatics resources such as Uniprot (dev.isb-sib.ch/projects/uniprot-rdf) or Bio2RDF (bio2rdf.org), SPARQL - a W3C ...
Cho Hune +6 more
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SPARQL Faceter—Client-side Faceted Search Based on SPARQL
CEUR Workshop Proceedings, 2016 Peer ...
Hyvönen Eero, Koho Mikko, Heino Erkki
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, 2016 SPARQL is the standard query language for RDF data. The distinctive feature of SPARQL is the OPTIONAL operator, which allows for partial answers when complete answers are not available due to lack of information. However, optional matching is computationally expensive - query answering is PSPACE-complete.
Kaminski, Mark, Kostylev, Egor V.
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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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Machine-interpretable dataset and service descriptions for heterogeneous data access and retrieval [PDF]
, 2015 Alexander K. +11 more
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Sparqling: Painlessly drawing SPARQL queries over Graphol ontologies
, 2018 There is a reason why the proverb says “A picture is worth a thousand words”: diagrams or sketches of concepts and of the relationships that exist between them help understand their meaning. In the Semantic Web, the concepts and relationships of the world are modeled through ontologies, but current standards for ontology languages such as OWL 2 don’t ...
Di Bartolomeo, Sara +3 more
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RDF Fusion: An Extensible SPARQL Engine for Hybrid Data Models
IEEE AccessThe Internet of Things (IoT) generates vast streams of sensor data that often require enrichment with background knowledge about the system and domain. Although such data can be represented as graphs, purely graph-based models struggle with the temporal ...
Tobias Schwarzinger +5 more
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