Following the announcement of Dimitris Kontokostas about migration to 
WebProtege,
I thought I'd share some observations about the ontology itself.
I can add more details if there's interest.

I see these main problems with the ontology:
1. many classes and properties need better description
2. some properties are redundant or ambiguous.
  This is exacerbated by the lack of descriptions, e.g. it takes data 
examination to figure out that "event" means the same as "sportDiscipline" and 
should be eliminated.
3. a few "syntax errors" re classes and capitalization of properties, I think I 
wrote about those (DID I?)
  E.g. firstAccentYear rdfs:domain Peak,Volcano is not properly parsed (nor are 
multiple domains a good idea).
4. Mapping to external ontologies, esp. schema.org is not good.
  I also consider statements about owl:Thing to be useless.
  I'll write separately about this, but what's the chance the DBpedia 
maintainers will agree to emit separately:
- the ontology mapping statements (filtering by namespace). I have a simple 
example.
- data triples mapped to external ontologies
5. Specific properties (e.g. Person/height
6. Since domain/range are not taken into account by the mapped extractor, I 
think it's better to emit them as
  schema:domainIncludes, schema:rangeIncludes rather than rdfs:domain, 
rdfs:range (which have strict uncompromising  semantics)
7. "topical pages" should use foaf:focus not skos:subject, I wrote about this

The migration to WebProtege should take care of 3. 

> the ontology in the wiki will be in read mode and a bot will keep it in sync 
> with WebProtege.

I've played with WebProtege once but haven't used it.
I hope it has as good collaboration features as MediaWiki, in particular 
subscribing to a class or discussions about it.
If not: maybe we can have discussions in the Class/Property Discussion 
namespaces (which currently nobody uses), even though the definitions are in 
WebProtege.

Cheers!



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