Querying RDF data
On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes
This paper studies the semantics of SPARQL queries with optional matching features under entailment regimes. It argues that the normative semantics may lead to answers [...]
SPARQL Beyond Subgraph Matching
This paper describes the extension of the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, [...]
Schema-Agnostic Query Rewriting in SPARQL 1.1
SPARQL 1.1 supports the use of ontologies to enrich query results with logical entailments, and OWL 2 provides a dedicated fragment OWL QL for this [...]
Querying Semantic Data
After this tutorial, you should be able to: Build your own basic SPARQL queries, step-by-step; Understand that SPARQL is not just a query language, it [...]
DBpedia: Visualising Linked Data – Graph of Members of Punk Rock Bands
Using DBpedia, Google Refine, R, and Gephi to play with Linked Data. This tutorial uses data from DBpedia with the aforementioned tools to create visualizations [...]
0 to 60 on SPARQL queries in 50 minutes
This links to the PDF version of Ethan Gruber's webinar, which provides an introduction to SPARQL, a query language for RDF. Users will gain hands-on [...]
Querying Linked Data
This slide presentation looks in detail at SPARQL and introduces approaches for querying and updating semantic data. It covers SPARQL algebra and protocol, and also [...]
Simple SPARQL Tutorial: RDF Model – Turtle Format … the data to query
In this video, the presenter lays the groundwork for learning SPARQL by explaining the purpose of RDF triples. He then introduces the viewer to the [...]
Using DBPedia
A brief video on DBPedia and SPARQL. Demonstrates how to query DBPedia for useful/interesting questions. Shows not just how to construct SPARQL queries, but also [...]
Linked Data Tutorial: From Document Web to a Web of Linked Data
This slide presentation explains the "Data Web" vision, including some of the preliminary standards and technologies. It also covers tools and technological building blocks developed [...]