Hello everyone,
i'm working on a project tat involves the use of the classes of
dbpedia ontology and YAGO. Analizyng some resources there are examples
that doesn't match to me, so I'm asking for a bit of explanation about
them.
Exmple 1:
http://dbpedia.org/page/Bari
This example has both dbpedia-owl classes and ago classes referenced
by a rdf:type property
rdf:type
dbpedia-owl:Place
dbpedia-owl:Area
dbpedia-owl:Resource
dbpedia-owl:PopulatedPlace
yago-class:AncientGreekCities
yago-class:CitiesAndTownsInApulia
yago-class:CoastalCitiesAndTownsInItaly
yago-class:PortCitiesInItaly
Example 2:
http://dbpedia.org/page/Henri_Caesar
This example has no YAGO class, no rdf:type, but has this property:
dbpprop:type
dbpedia:Pirate
Why it has no rdf:type ? what is this propery (dbpprop:type) used for?
Why his type is not a class in the dbpedia ontology?
Example 3:
http://dbpedia.org/page/Anti_Piracy_Maritime_Security_Solutions
This example has no YAGO class, a rdf:type along with a new dbpedia-
owl:type:
rdf:type
dbpedia-owl:Company
dbpedia-owl:Resource
dbpedia-owl:Organisation
dbpedia-owl:type
dbpedia:Private_security
dbpedia:Pirate
Also, now dbpedia:Pirate is referenzed by a dbpedia-owl property while
before it was referenced by a dbpprop property.
Example 4:
http://dbpedia.org/page/Pirate
this has no rdf:type, no YAGO class, but both dbpedia-owl:type and
dbpprop:type (both inverse)
is dbpedia-owl:type of
dbpedia:Anti_Piracy_Maritime_Security_Solutions
is dbpprop:type of
dbpedia:Blackbeard
dbpedia:Edward_Low
dbpedia:Anne_Bonny
[...]
Example 5:
http://dbpedia.org/page/Vampire
Ths has no rdf:type, no YAGO class, the only "ontology related"
properties in it are:
is dbpedia-owl:genre of
dbpedia:Shadow_Kiss
dbpedia:Blood_Promise_%28novel%29
dbpedia:Frostbite_%28Richelle_Mead_novel%29
dbpedia:Vampire_Academy
is dbpedia-owl:subject of
dbpedia:The_Vampire_Lestat
dbpedia:Interview_with_the_Vampire
dbpedia:Blackwood_Farm
Now can someone please explain why there are so different structures
in those resources? One can't just pick a resource and get his class
in the ontology? Please clear my mind :)
Thank you in advice,
Piero
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