Ontology with non-taxonomic relations

good morning,

My work's goal is to build modular ontologies with non-taxonomic relations.

I have some troubles in writing them in an owl file (I can't visualize the relations between class and restrictions).

I am new at the ontology domain, so I want to take an exemple on existing ontologies, to see how non-taxonomic rel开发者_StackOverflowations are defined.

However only those I know are MeSH and GENE and they only use taxonomic relations. So, is there, on the web, any known ontology using non-taxonomic ones?

Thank you.

One of the most notable flat (hierarchically) ontologies is the ConceptNet. It is a common sense knowledge base, built by the community. It is one of the projects of the Common Sense Computing Initiatives at the MIT Media Lab.

The following image is a small subset of nodes and links in ConceptNet:

If by non taxonomic, you mean not only subclass relations or some kind of is-a relation, did you look for dbpedia or music ontology

Or what do you mean exactly with "non-taxonomic relations"?

To expand on previous answers/comments... SNOMED CT is heavy with taxonmic relationships. Specifically it uses IS-A relationships to organise the concepts. However there are a lot of other relationships. For example relationships like

Family history of breast cancer 1 gene mutation

• Finding context : Known present
• Associated finding :BRCA1 gene mutation positive
• Temporal context : Current or past Subject
• Relationship context : Person in family of subject

However, not all these defining properties are specified (either not done yet, or not possible) and the taxonomy is important, and actually determined largely by these properties through classification (as with many ontologies)

For example. Consider these statements - "Biped HAS 2 Legs"(defined) & "Person HAS 2 Legs" The classifier will infer an IS-A relationship between the two.

Anyway, you could 'delete' the IS-A relationships, but I don't think you'll have anything of value, and I don't know why you'd want to exclude taxanomic relationships.. They're significant.

BTW, "breast cancer affects women" if your using a closed world assumption this is an invalid statement. Men can also get breast cancer.

And Finally, SNOMED CT isn't 'in' OWL format - but can be transformed into such (e.g. Using Perl).

SNOMED CT heavily uses non-taxonomic relations, and it is written in OWL so you can see exactly how everything is implemented.