Obtaining the Ontology Files

The reserved ontology IRI is www.geoscienceontology.org/svo.

The upper ontology IRI is www.geoscienceontology.org/svo/svu.

The lower ontology IRI is www.geoscienceontology.org/svo/svl.

The lower ontology is split up into categorical ontologies by class and can be found in the respective namespace of the lower ontology IRI. For example, the abstraction ontology can be found at www.geoscienceontology.org/svo/svl/abstraction.

Currently, two RDF files are provided at each IRI: a Turtle format file (extension .ttl) and an RDF/XML format file (extension .rdf). The general curl command to obtain one of these files from the desired IRI is:

 >> curl -sH "accept:text/turtle" -L http://www.geoscienceontology.org/svo/svu [> svo-upper.ttl]
 >> curl -sH "accept:application/rdf+xml" -L http://www.geoscienceontology.org/svo/svu [> svo-upper.rdf]

The example above shows how to obtain the upper ontology file. Optional elements are shown in [].

Browsers are set to redirect to the documentation for each ontology (in HTML format), which are currently placeholder files but which will be updated soon. However, you can access the files directly through a browser by typing in the file name desired. File names have the following template: svo-lower-XXX.ext, where ext is the extension and XXX is the respective ontology namespace, such as abstraction or phenomenon. The upper ontology file names have the form svo-upper.ext. For example, you may download the upper ontology file in RDF/XML form by going to the following link: www.geoscienceontology.org/svo/svu/1.0.0/svo-upper.rdf. To get the files for a specific version of the ontology, the term /X.Y.Z indicating the version number must be added to the end of the path. The most current version of the ontology is 1.0.0. In general, RDF/XML files will lead to a download, while TTL files dipsplay in the browser directly.

The ontology files may also be loaded into Protégé using the URIs provided.

In addition to the ontology RDF files, the ontology also comprises a set of rules used in combination with an inference engine to generate additional relationships between entities. If you are interested in running the ontology locally on your machine, some information and relevant configuration files are provided in this GitHub repo.