Convert a ontology to a graph

Question

How to convert an ontology (.owl or .rdf) in a graph or an adjacency matrix? Is there any tool?

Answer 1

it is possibile to extract nodes and edges by using OWL API (Java API) available here. morever, you can use GraphX spark's API that takes nodes and edges to produce a property graph (directed multigraph) as explained at this link.

Answer 2

It largely depends what you want to do. For example, RFD - Gravity, by Salzburg Research, provides a nice visualisation for both OWL and RDF files; and Protégé, by Stanford University, is a very popular Ontology editor. Both of them are written in Java and free of charge, and Protégé is open source.

You can fnid more Semantic Web tools in this URL: http://www.w3.org/wiki/SemanticWebTools.