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Uses available tools, servers, and endpoints to issue queries against a dataset.

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 [...]

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By |January 20th, 2017|Comments Off on Semantic Web Topics: Term Project

SPARQL Endpoint Probe Service

This is a PHP-based tool for probing statistics about SPARQL endpoints. These include: number of triples stored, number of triples in named graphs, number of [...]

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By |January 16th, 2017|Comments Off on SPARQL Endpoint Probe Service

Putting SPARQL on the Map with Ordnance Survey Linked Data and OS OpenSpace

In this blog post, the author describes how to plot SPARQL query results from the Ordnance Survey dataset, available as Linked Open data (LOD) onto [...]

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By |January 15th, 2017|Comments Off on Putting SPARQL on the Map with Ordnance Survey Linked Data and OS OpenSpace

Ordnance Survey Linked Data: Combining Postcode and Spatial Queries

Building on previous blog posts, the author shows how to query and combine data from two different datasets. Although the datasets were published by the [...]

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By |January 15th, 2017|Comments Off on Ordnance Survey Linked Data: Combining Postcode and Spatial Queries

Ordnance Survey Linked Data: A Simple Postcode Query

This blog post shares give some simple examples of what can be done with the Code-Point(R) Open dataset, available as Linked Open Data (LOD). This [...]

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By |January 15th, 2017|Comments Off on Ordnance Survey Linked Data: A Simple Postcode Query

Ordnance Survey: SPARQL Endpoint

In this blog post, the author draws attention to an interesting feature of some SPARQL endpoints. When a query is entered, the full HTTP GET [...]

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By |January 15th, 2017|Comments Off on Ordnance Survey: SPARQL Endpoint

Ordnance Survey Linked Data: Simple SPARQL Example

This blog post shares how to retrieve several variables of data from the Ordnance Survey dataset, available as Linked Open Data (LOD). Includes SPARQL queries [...]

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By |January 15th, 2017|Comments Off on Ordnance Survey Linked Data: Simple SPARQL Example

Visualising The Location Graph With Gephi and Ordnance Survey Linked Data

Building on a previous post, the author shares another example using a SPARQL endpoint to query Linked Open Data and turn the results into a [...]

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By |January 13th, 2017|Comments Off on Visualising The Location Graph With Gephi and Ordnance Survey Linked Data

Ordnance Survey Linked Data: A Simple Spatial Query

In this blog post, the author discusses the relative lack of spatial indexes for data in RDF triple stores, compared to data stored in GIS [...]

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By |January 10th, 2017|Comments Off on Ordnance Survey Linked Data: A Simple Spatial Query

Simple Protege Tutorial: Running SPARQL Queries on Both Ontologies

Building on the previous videos in the series, this final video shows how to use the Jena Fuseki Server issue SPARQL queries against two different [...]

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By |January 8th, 2017|Comments Off on Simple Protege Tutorial: Running SPARQL Queries on Both Ontologies