Querying RDF data
0 to 60 on SPARQL Queries in 50 Minutes
This webinar provides an introduction to SPARQL, a query language for RDF. Users will gain hands on experience crafting queries, starting simply, but evolving in [...]
Tarql: SPARQL for Tables
Tarql is a command-line tool for converting CSV files to RDF using SPARQL 1.1 syntax. In short, a CSV file’s contents are input into a [...]
Using the Convert CSV to RDF ingest tool
This guide will walk through the use of the Convert CSV to RDF tool, a semi-automated method of converting comma separated or tab separated text [...]
Eurostat Linked Data
his is a Linked Data version of the Eurostat data with the goal to provide 5 star Linked Open Data on the European level, in [...]
Linked Statistical Data Analysis
Linked Data design principles are increasingly employed to publish and consume high-fidelity, heterogeneous statistical datasets in a distributed fashion. While vast amounts of linked statistics [...]
Jena Full Text Search
This documentation explains how to configure and use the Full Text extension to Apache Jena's ARQ (the module is included in Fuseki). The extension combines [...]
Equality and Inequality in SPARQL
This brief blog post discusses issues surrounding expression semantics in SPARQL. Practices that people are used to from other languages (like the use of "=" [...]
Don’t Use a Hammer to Screw in a Nail: Alternatives to REGEX in SPARQL
This brief blog post explains that regular expressions are expensive to evaluate regardless of what language you are using them in. The author suggests that [...]
MeSH RDF SPARQL Endpoint Query Editor
This interface allows users to query the RDF representation of Medical Subject Headings, a biomedical vocabulary produced by the National Library of Medicine. Available outputs: [...]
Semantic Web Topics: Term Project
This document outlines a final project originally from the course "Semantic Web Topics" at LeHigh University. Students are asked to extend, create, or apply one [...]