Category "ontology"

Creating an instance in OWLready2 creates a completely new class instead of asigning it to the existing class

I'm trying to create a simple ontology, following the tutorial on the official website. The code runs smoothly and everything seems fine when running this code:

Object property restriction based on Data property

I'm using Protégé to define an ontology and I'm having trouble defining constraints. Let's say I have a class "Node" and the Node can be related t

SWRL Rules in Protege 5.5.0

I have 2 Classes(Agent and Penalty). Also, I have hasPoint(Penalty) and hasWeight(Agent) data properties. When I write this SWRL Rule, I got an error: Agent(?a)

Wikidata ontology to Produce a larger subgraph by extracting the subgraphs of some relevant books, birthplace, education institutions, etc

I want to load the wikidata ontology in stardog studio to produce a larger subgraph by extracting the subgraphs of some relevant books, birthplace, education in