it seems that some authority template instances existed before the latest
DBpedia release (e.g. [1])
so these properties were extracted from the infoboxExtractor.
Infobox extractor extracts greedily and usually it has very low quality,
but in this case viaf is a number so the quality is actually very good.
The mapToClass definition is obligatory for now. About the "new nodes"
behaviour you can read the entries in the wiki
http://mappings.dbpedia.org/index.php/How_to_edit_DBpedia_Mappings#Template_Mapping
http://mappings.dbpedia.org/index.php/Template:TemplateMapping
or the complete manual (sec 5.2 mostly)
http://dbpedia.hg.sourceforge.net/hgweb/dbpedia/extraction_framework/raw-file/02b0b7b41624/core/doc/mapping_language/DBpedia_Mapping_Language.pdf
Best,
Dimitris
[1]
http://en.wikipedia.org/w/index.php?title=Marcel_Reich-Ranicki&action=edit&oldid=488376111&editintro=Template:BLP_editintro
On Fri, Jan 18, 2013 at 12:58 AM, Ben Companjen <[email protected]>wrote:
> Hi Dimitris,
>
> Thanks for interrupting ;)
> It's a good thing then, that I was held back by the definition of the
> LCCN property (domain WrittenWork). I'll let the mapping rest for now.
>
> Based on my understanding of the "How to create a mapping" pages, I
> was going to use only PropertyMappings, as the template does not
> "define" a person like an infobox; it is included with other templates
> (I presume). Would they have created new nodes?
> And what do you mean by "[handling this info] is not supported by the
> framework yet"? Is it too much data?
>
> You mention dbprop:viaf, but not how it came into being. I can now
> answer my previous question: after another look at the wiki [2], I
> think "viaf" and "lccn" must have been properties in an infobox
> template before the Authority control template was introduced. Or are
> these raw properties still being created from any template property?
>
> I've been editing and answering some DBpedia-tagged questions on
> StackOverflow, but can always learn more. :)
>
> Ben
>
> [2] http://wiki.dbpedia.org/Datasets#h18-11
>
> On 17 January 2013 23:45, Dimitris Kontokostas <[email protected]> wrote:
> > Hi Ben, Roland
> >
> > I've been following this for a while and according to OCLC there should
> be
> > ~250000 ;)
> > http://www.oclc.org/research/news/2012/12-07a.html
> >
> > I already tried to see how we can handle this info but unfortunatelly it
> is
> > not supported by the framework yet
> > so. please do not make any mappings to it for now, they will probably
> > produce a duplicate (blank) node if there is another mapping for the page
> > and will make things worse
> >
> > I already suggested a solution a few days ago in similar thread
> > You should create something like a "noMapToClass" directive in the
> mappings
> > but this needs some work.
> > Until then i think that dbprop:viaf can do the work [1]
> >
> > Best, Dimitris
> >
> > [1]
> >
> http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=select+%3Fs+%3Fo+where+{%3Fs+%3Chttp%3A%2F%2Fdbpedia.org%2Fproperty%2Fviaf%3E+%3Fo}+LIMIT+100&format=text%2Fhtml&timeout=0&debug=on
> >
> >
> >
> >
> > On Thu, Jan 17, 2013 at 11:24 PM, Roland Cornelissen
> > <[email protected]> wrote:
> >>
> >> Hi Ben,
> >> You have rights now to edit mappings: Happy Mapping to you!
> >> It will be great if you add these kind of authority data mappings.
> There
> >> is some nice info in there for linking data.
> >>
> >> Cheers,
> >> Roland
> >>
> >>
> >>
> >> On 01/17/2013 11:07 PM, Ben Companjen wrote:
> >>
> >> Hi all,
> >>
> >> I was wondering where the identifiers for VIAF (Virtual International
> >> Authority File) came from. They (and e.g. LCCNs) are usually input in
> >> Authority control templates, but there is no mapping for that template
> >> [1]. (Can I make that? I just registered as Bencomp.)
> >> Somehow they were mapped to dbpprop:viaf, for which there is no
> definition
> >> [2].
> >>
> >> There are about 6500 links-to-outside readily available, waiting to be
> >> mapped :)
> >>
> >> Regards,
> >>
> >> Ben
> >>
> >> [1]
> >>
> http://mappings.dbpedia.org/server/templatestatistics/en/?template=Authority_control
> >> [2] http://dbpedia.org/property/viaf
> >>
> >>
> >>
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> >>
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> > --
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>
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