by Dan Carey | Feb 7, 2017 | Knowledge Graphs & Ontologies
Domain and range for ontological properties are not about data integrity, but logical necessity. Misusing them leads to an inelegant (and unnecessary) proliferation of properties. Logical Necessity Meets Elegance Screwdrivers generally have only a small set of head...
by Michael Uschold | Apr 22, 2016 | Knowledge Graphs & Ontologies
We take a deep dive into the pragmatic issues regarding the use of inverse properties when creating OWL ontologies. Property Inverses and Perspectives It is important to understand that logically, both perspectives always exist; they are joined at the hip. If Michael...
by Dave McComb | Jun 6, 2015 | Knowledge Graphs & Ontologies
This applies to URIs that a system needs to generate when it finds it needs to mint a new resource. I’ve been thinking a lot about automated URI assignment lately. In particular the scheme we’ve been using (relying on the database to maintain a “next...
by Dave McComb | Jun 5, 2015 | Knowledge Graphs & Ontologies
Outlining three and a half ways that applications can have their schemas derived from enterprise ontologies. Many people (ok, a few people) have asked us: “what is the relationship between an ontology and an application?” We usually say, “That’s an excellent question”...
by Dave McComb | Jun 5, 2015 | Knowledge Graphs & Ontologies
Encarta defines veracity as “the truth, accuracy or precision of something” and that seems like a pretty good place to start. Our systems don’t model uncertainty very well, and yet that is exactly what we deal with on a day-to-day basis. This paper examines one aspect...
