Hi, this is one example of the limits in producing an ontology without
considering the full range of data that it has to provide a schema for.
See e.g. [1] for an approach of deriving "ontology patterns" from data, in
order to optimize the semantics of the ontology.
In DBpedia, one may want to establish one or more thresholds (even contextual
or dynamic) for including alternative types in the domain/range of properties.
Vishal's example spots the optimism of mapping dbpprop:allegiance directly to
dbpedia-owl:country, while dbpprop:allegiance can range on the following types:
http://schema.org/Place 8797
http://schema.org/Organization 665
http://schema.org/Person 182
http://schema.org/Event 8
http://dbpedia.org/ontology/EthnicGroup 8
i.e. about 855 out of 9660 (almost 9%) are not places (let alone countries,
which are 8336, i.e. 86%). That would make a 14% error rate on the declared
range, quite a lot.
The approach described in [1] would lead to a different mapping:
dbpedia-owl:allegiance:
domain: dbpedia-owl:Agent
range: dbpedia-owl:Agent owl:union dbpedia-owl:EthnicGroup owl:union
dbpedia-owl:Event owl:union dbpedia-owl:Place
Best
Aldo
[1] Presutti V., Aroyo L., Adamou A., Schopman B., Gangemi A., Schreiber G.
Extracting Core Knowledge from Linked Data. Proceedings of the Second Workshop
on Consuming Linked Data, COLD2011, Workshop in conjunction with the 10th
International Semantic Web Conference 2011 (ISWC 2011),
http://ceur-ws.org/Vol-781/, 2011.
On Feb 11, 2013, at 7:16:14 PM , Jona Christopher Sahnwaldt
<jcsahnwa...@gmail.com> wrote:
>
> On Feb 11, 2013 1:34 PM, "Mariano Rico" <mariano.r...@gmail.com> wrote:
> >
> > Hi Vishal,
> >
> > it is not a matter of mappings, it is a matter of wikipedia.
> > If you edit the wikipedia page "Marcos Escobedo" you will see in the
> > infobox:
> > |allegiance=[[Miguel Hidalgo]]
> >
> > this means a link to the wikipedia page "Miguel Hidalgo", which is a
> > desambiguation page
> > (http://en.wikipedia.org/w/index.php?title=Miguel_Hidalgo&redirect=no )
> > with a UNIQUE value: "Miguel Hidalgo y Costilla".
> >
> > A solution could be to change the link to the "State" Miguel Hidalgo
> > (http://en.wikipedia.org/wiki/Hidalgo_(state)) instead of the "Person"
> > Miguel Hidalgo.
>
> That would be incorrect. According to
> http://en.wikipedia.org/wiki/Marcos_Escobedo , he "...put himself at the
> service of independence leader Miguel Hidalgo".
>
> JC
>
> > Best regards,
> >
> > Saludos cordiales,
> >
> > -Mariano
> >
> >
> > On Mon, Feb 11, 2013 at 12:01 PM, Vishal Sinha <vishal.sinha...@yahoo.com>
> > wrote:
> >>
> >> Hi,
> >>
> >> The following resource in DBPedia:
> >> <http://dbpedia.org/resource/Marcos_Escobedo> is a Person.
> >>
> >> which has a country:
> >> <http://dbpedia.org/resource/Miguel_Hidalgo_y_Costilla> , but in fact that
> >> is also a Person.
> >>
> >> How is this possible?
> >>
> >>
> >>
> >>
> >>
> >>
> >> ------------------------------------------------------------------------------
> >> Free Next-Gen Firewall Hardware Offer
> >> Buy your Sophos next-gen firewall before the end March 2013
> >> and get the hardware for free! Learn more.
> >> http://p.sf.net/sfu/sophos-d2d-feb
> >> _______________________________________________
> >> Dbpedia-discussion mailing list
> >> Dbpedia-discussion@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
> >>
> >
> >
> > ------------------------------------------------------------------------------
> > Free Next-Gen Firewall Hardware Offer
> > Buy your Sophos next-gen firewall before the end March 2013
> > and get the hardware for free! Learn more.
> > http://p.sf.net/sfu/sophos-d2d-feb
> > _______________________________________________
> > Dbpedia-discussion mailing list
> > Dbpedia-discussion@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
> >
>
------------------------------------------------------------------------------
Free Next-Gen Firewall Hardware Offer
Buy your Sophos next-gen firewall before the end March 2013
and get the hardware for free! Learn more.
http://p.sf.net/sfu/sophos-d2d-feb
_______________________________________________
Dbpedia-discussion mailing list
Dbpedia-discussion@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
