Just an add-on about what I did not understand.

Asking for the resource of Park Güell in DBpedia I have to use the URI-encoded 
URL:
curl -L -H "Accept: text/turtle; q=1.0, application/x-turtle; q=0.9, text/n3; 
q=0.8, application/rdf+xml; q=0.5, text/plain; q=0.1" 
http://dbpedia.org/resource/Park_G%C3%BCell

The IRI-encoded URL does not return any result:
curl -L -H "Accept: text/turtle; q=1.0, application/x-turtle; q=0.9, text/n3; 
q=0.8, application/rdf+xml; q=0.5, text/plain; q=0.1" 
http://dbpedia.org/resource/Park_Güell

Why that, it should at least return the owl:sameAs dbpedia:Park_G%C3%BCell, 
right?

Though for German DBpedia both URLs (IRI and URI) return exactly the same:
curl -L -H "Accept: text/turtle; q=1.0, application/x-turtle; q=0.9, text/n3; 
q=0.8, application/rdf+xml; q=0.5, text/plain; q=0.1" 
http://de.dbpedia.org/resource/Park_Güell
curl -L -H "Accept: text/turtle; q=1.0, application/x-turtle; q=0.9, text/n3; 
q=0.8, application/rdf+xml; q=0.5, text/plain; q=0.1" 
http://de.dbpedia.org/resource/Park_G%C3%BCell

Thing is that the German DBpedia points to owl:sameAs dbpedia:Park_Güell and 
most other language chapters do that.

I totally understand the problem of breaking legacy links from external 
datasets. But we should somehow discuss how a transformation can be achieved, 
because as said the problem gets not solved by postponing it year after year. 
We also should consider that quite a bunch of external datasets are already 
broken, due to changes in the URI structures (e.g. usage of unescaped comma and 
brackets) or resources that disappeared over time.
One solutions could be redirects for dereferencing. But also accessing DBpedia 
via SPARQL should be considered.

Finally, as I understood now (it is not mentioned on 
[http://wiki.dbpedia.org/DatasetsLoaded2014] properly) the .nt (URI) and not 
the .ttl (IRI) datasets have been imported!?

If you like, we could start a group discussion, collecting all possible issues 
and effects related to that, and looking for viable solutions.

Thanks,
Magnus

-- 
Magnus Knuth

Hasso-Plattner-Institut für Softwaresystemtechnik GmbH
Prof.-Dr.-Helmert-Str. 2-3
14482 Potsdam

Amtsgericht Potsdam, HRB 12184
Geschäftsführung: Prof. Dr. Christoph Meinel

tel:     +49 331 5509 547
email:   [email protected]
web:     http://www.hpi.de/
webID:   http://magnus.13mm.de/


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