Reads and understands high-level descriptions of the classes and properties of a dataset in order to write queries.
Wikidata and Authority Control
This video discuss Wikidata's pivotal role in bolstering authority control in Wikipedia through automated interactions with VIAF and other international authority files. Also includes a [...]
An Introduction to Wikidata
Describes Wikidata, a "free and open knowledge base" which houses the data formerly located at Google's Freebase. Discusses how Wikidata is well-placed to solve data [...]
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 [...]
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 [...]
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 [...]
Wikidata SPARQL Query Tutorial
This video presentation demonstrates how to construct SPARQL queries simply and easily using the Wikidata Query Service. It works through an example of searching for [...]
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 [...]
Querying the Linked Archives Hub data using SPARQL
This blog post provides a few sample SPARQL queries that can be used as a starting point for exploring an unfamiliar dataset. The queries are [...]
Watch this: Probe the Semantic Web with SPARQL
One thing that is immediately obvious from the triple pattern of SPARQL queries is that harvesting information from the Semantic Web is more complex than [...]
Linked Data and SPARQL Queries Tutorial
This tutorial goes through some basic SPARQL queries in order to give the user a sense of how to discover and query different Linked Data [...]