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Uses the regular expression (regex()) function for string matching.

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 [...]

By |August 13th, 2017|Comments Off on Jena Full Text Search

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 [...]

By |August 13th, 2017|Comments Off on Don’t Use a Hammer to Screw in a Nail: Alternatives to REGEX in SPARQL

SPARQL and Linked Data Homework Exercises

This document contains several "written" and "electronic" homework questions originally from the course "Semantic Web Topics" at LeHigh University. They include: Write a series of [...]

By |January 20th, 2017|Comments Off on SPARQL and Linked Data Homework Exercises

SPARQL: Using Operators Tutorial and Quiz

This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query [...]

By |November 23rd, 2016|Comments Off on SPARQL: Using Operators Tutorial and Quiz

XQuery/SPARQL Tutorial

This page shows how to access a SPARQL endpoint using an interface provided by Talis. Potentially more valuable, it also provides several dozen example queries, [...]

By |January 16th, 2016|Comments Off on XQuery/SPARQL Tutorial

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 [...]

By |August 13th, 2015|0 Comments

Introduction to SPARQL

A simple (yet thorough) introduction to SPARQL query language based on the W3C documentation. Focuses on aspects of the query language present in SPARQL 1.0 [...]

By |August 13th, 2015|0 Comments

SPARQL Tutorial: Filters

This brief tutorial discusses how graph matching allows patterns in a graph to be found. This section describes how the values in a solution can [...]

By |August 13th, 2015|0 Comments