Avoid duplicate RDFS ontologies by …

Context

Due to a bug in OWL2, we've got two URLs claiming to be ontologies:

• http://www.w3.org/2000/01/rdf-schema
• http://www.w3.org/2000/01/rdf-schema#

Also

A similar predicament exists for OWL ontology itself. We've got two URLs: with and without the sign.

What alternatives do we have?

• Filter owl:Ontology instance list by rdfs:isDefinedBy links

  ---

  Only show ontologies which define at least one term.

  This does not solve the OWL problem.

• Rewrite URLs while loading them

  ---

  Replace …owl with …owl#.

Decision

Rewrite URLs.

Consequences

➕ Should resolve both problems at once.