Ontologies, vocabularies

• Ontology and vocabulary development is still a complex task

• • but the really difficult task is to understand a specific area of knowledge
  • OWL is, in some ways, only syntax…

• A W3C Working Group has developed some documents:

• • “Best Practice Recipes for Publishing RDF Vocabularies”
  • “Defining N-ary relations”
  • “Representing Classes As Property Values”
  • “Representing "value partitions" and "value sets"”
  • “XML Schema Datatypes in RDF and OWL”

• More work is needed…