This might be a dumb question, but here goes...
In generic databases there are some very broad categories that are
useful, in particular, the kind of high level categories that are in
the dbpedia ontology such as
* Person
* Place
* Creative Work, etc.
* Organization
What are these categories (as a group) called?
I see these as important because they cut across subjects:
"Physics", "Baseball" or "Feminist Movement" are going to contain
instances of all of the above.
Note that the Dbpedia ontology is focused on things that are
relatively concrete. A number of wikipedia articles reference
"Concepts", "Inventions" or other things that are harder to pin down
than the above concrete categories, for instance,
http://en.wikipedia.org/wiki/Holographic_principle
or
http://en.wikipedia.org/wiki/Phase-locked_loop
If more of wikipedia were to be categorized, the dbpedia ontology
would need to be extended to deal with this sort of thing. What do we
call the set of high-level categories that includes the current dbpedia
ontology types + more abstract things?
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