- Yes, reasoning over huge ontologies may be a problem
- combination of ontologies may lead to this
- DL systems shown to work for ≈100k concepts already
- albeit with a simple structure
- there are already applications with large ontologies (see later)
- lots of R&D is happening here…
- but it is indeed still a challenge
- But: “a little semantics can take you far” (Jim Hendler)
- i.e., small OWL ontologies may lead to useful applications
- applications may use ontology “islands”, and loosely bind them
- OWL gives you tools for that