Interacting with 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 [...]
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 [...]
URI design for RDF conversion of CSV-based data
The sharing of comma-separated files is very common, and a common set of problems arise upon the receipt and processing of data within this format. [...]
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 [...]
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 [...]
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 [...]
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 "=" [...]
Desiderata for an authoritative Representation of MeSH in RDF
Although the Semantic Web provides a framework for the integration of resources on the web, datasets are not always made available in RDF by their [...]