by Irene Polikoff | Jul 9, 2021 | Ontology Modeling, Best Practices, Blog
Relationships in RDF graphs have a direction. Frequently, direction is clear from the name of the relationship. For example, John receives Employee of the Year 2020 Award. It is clear from the name of the relationship receives that the direction is from John to the...
by Irene Polikoff | Jun 1, 2021 | Ontology Modeling, Blog
This is the second blog on what modeling language we recommend to use when creating ontologies. In the previous blog, I talked about what I do not use and why. In this blog I will talk about what I do use. The idea for these two blogs came from a question asked by a...
by Irene Polikoff | May 30, 2021 | Uncategorized, Ontology Modeling, Best Practices, Blog
Classonomy is a word I heard recently from a colleague. It is not real word, but a made up term that resonated with me because it describes well a specific type of ontologies I come across frequently – especially, but not limited to, in the Life Sciences domain....
by Irene Polikoff | May 23, 2021 | Ontology Modeling, Blog
The idea for this blog came from a question asked by a customer. They said: “When do you use OWL and when do you use SHACL? Isn’t OWL about semantics and SHACL about data validation? And what about RDFS?” My answer was that I no longer used RDFS/OWL....
by Irene Polikoff | May 21, 2021 | Ontology Modeling, Best Practices, Blog
In the previous blog we discussed what is reification and how you could implement it when working with knowledge graphs. In this blog, we will focus on one approach, RDF-star, and its support in TopBraid EDG. As mentioned before, RDF-star is a proposed extension to...
by Irene Polikoff | May 20, 2021 | Ontology Modeling, Best Practices, Blog
What is Reification? While the name may sound complex, the concept is easy to understand. Reification is a technical term used in talking about possible approaches to making statements about facts captured in a graph. Let’s look at a simple example: Consider a...
