Uses FILTER to formulates queries that eliminate solutions from a result set.
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 "=" [...]
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 [...]
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 [...]
SPARQL: Using DESCRIBE and CONSTRUCT Tutorial and Quiz
This slide tutorial focuses on using DESCRIBE and CONSTRUCT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the [...]
SPARQL: Using ASK Tutorial and Quiz
This slide tutorial focuses on using ASK in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]
SPARQL: Using SELECT Tutorial and Quiz
This slide tutorial focuses on using SELECT in SPARQL queries, but also includes other basic operators. Several examples are provided which include the RDF data [...]
DBPedia SPARQL Endpoint Exercises
This slide tutorial teaches the user how to form SPARQL queries to answer various questions of interest and retrieve results from DBpedia's SPARQL endpoint. In [...]
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 [...]
Simple SPARQL Tutorial: Using FILTER, NOT EXISTS, MINUS Keywords
Tutorial showing how to modify a query to return instances of data where a specific property does not exist- the FILTER, NOT EXISTS, and MINUS [...]