Querying RDF data
SPARQL in 11 minutes
This video serves as an introduction to the W3C query language for RDF, SPARQL. Before explaining SPARQL queries themselves, a brief discussion of Linked Data [...]
Probing the SPARQL endpoint of data.gov.uk
In this blog post, the authors use a series of SPARQL queries to probe the content in the UK's data.gov. The techniques demonstrated can be [...]
Installing Virtuoso
Detailed instructions for installing Virtuoso, which the W3C describes as "a SQL-ORDBMS and Web Application Server hybrid (aka Universal Sever) that provides SQL, XML, and [...]
Querying Datasets on the Web with High Availability
As the Web of Data is growing at an ever increasing speed, the lack of reliable query solutions for live public data becomes apparent. SPARQL [...]
Toward the Web of Functions: Interoperable High-Order Functions in SPARQL
This video addresses the problem needing to know the specific URI of any third-party custom SPARQL function in order for the computation to be executed [...]
On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes
This presentation covers the semantics of SPARQL queries with optional matching features under entailment regimes. It argues that normative semantics may lead to answers that [...]
Answering SPARQL Queries over Databases under OWL 2 QL Entailment Regime
This video presents an extension of the ontology-based data access platform Ontop that supports answering SPARQL queries under the OWL 2 QL direct semantics entailment [...]
SPARQL Examples for the DCMI/ASIS&T Webinar
These gits were created to demonstrate the SPARQL examples used in the DCMI/ASIS&T webinar, "From 0 to 60 on SPARQL queries in 50 minutes". Each [...]
[email protected] Mail Archives
A public mailing list dedicated to discussing development of and with SPARQL: "Discussion of SPARQL software: building it, using it, etc.". Archived discussions about building [...]
Watch this: Probe the Semantic Web with SPARQL
One thing that is immediately obvious from the triple pattern of SPARQL queries is that harvesting information from the Semantic Web is more complex than [...]