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 [...]
On Beyond OWL: Challenges for Ontologies on the Web
In this slide presentation, the author argues that "the need for ontologies in the real world is manifest and increasing". This talk explores some of [...]
Vocabularies for Licenses
This blog post describes existing vocabularies used for expressing licenses when publishing Linked Data. Describes several ways for specifying a license within the data, or [...]
Moving from RDBMS to Graphs
This webinar discusses why companies are shifting away from RDBMS towards graph databases to unlock the business value in their data relationships. The speaker stresses [...]
Using RDFAlchemy Together With RDFLib’s SPARQLStore to Query DBPedia and Process Resources in an Object-Oriented Way
The author of this blog posts shares his work towards manipulating RDF graphs with Python to create an application that can handle Linked Datar esources [...]
Protege: How To Add Individuals
This video is about adding individuals to an ontology which was previously created using Protégé, a free, open-source ontology editor and framework. Although the video [...]
Protege: How To Define Classes as Property Restrictions
This video is about defining new classes by leveraging the property restrictions of existing classes. This is demonstrated with Protégé, a free, open-source ontology editor [...]
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 [...]
From a Wikipedia Page to the Corresponding DBpedia Page in One Click
This blog post contains a "scriplet" (i.e., a little bit of JavaScript code embedded in a link) which, if placed in a Web browser's "bookmarks" [...]
Databases: Graph vs. Relational
This video describes the differences between graph database models (such as RDF) and relational models (RDBMS). The narrator gives examples of when it would be [...]