W3C home > Mailing lists > Public > public-lod@w3.org > August 2010

Re: Linked Data and IRI dereferencing (scale limits?)

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Wed, 11 Aug 2010 19:48:44 +0100
Message-ID: <4C62F08C.2060607@openlinksw.com>
To: Gunnar Aastrand Grimnes <gunnar.grimnes@dfki.de>
CC: Giovanni Tummarello <giovanni.tummarello@deri.org>, Richard Cyganiak <richard@cyganiak.de>, Jörn Hees <j_hees@cs.uni-kl.de>, public-lod <public-lod@w3.org>
Gunnar Aastrand Grimnes wrote:
>
>
>
> On 11/08/10 15:11, Kingsley Idehen wrote:
>> Gunnar Aastrand Grimnes wrote:
>>> Joern's other problem here is that the types used by dbpedia include
>>> things that are not covered by the dbpedia endpoint, i.e. opencyc,
>>> skos, etc.
>>
>> Where did you get the conclusion above from?
>
> Because there are no results here:
>
> http://dbpedia.org/snorql/?query=SELECT+*+WHERE+{%0D%0A%3Fs+rdfs%3Alabel+%22Beach%22%40en+.+%0D%0A%3Fs+rdf%3Atype+%3Ft+.%0D%0A%3Ft+rdfs%3Alabel+%3Ftl+.%0D%0A} 
>
>
> Query:
> SELECT * WHERE {
> ?s rdfs:label "Beach"@en .
> ?s rdf:type ?t .
> ?t rdfs:label ?tl .
> }
>
> The concept "Beach" has several types from opencyc, like:
>
> http://sw.opencyc.org/2008/06/10/concept/Mx4r6-wc8BKxEdeIXwCgydofLQ
>
> The label of these types are not known by the dbpedia sparql endpoint.
>
> I guess from your answer that I've missed something here though?
Gunnar,


See: 
http://dbpedia.org/sparql?default-graph-uri=&should-sponge=&query=SELECT+*+WHERE+%7B%0D%0A%3Fs+rdfs%3Alabel+%22Beach%22%40en+.%0D%0A%3Fs+rdf%3Atype+%3Ft+.%0D%0A%3Ft+rdfs%3Alabel+%3Ftl+.%0D%0A%7D+&format=text%2Fhtml&debug=on&timeout=
>
>> Have you looked at: http://dbepedia.org/fct ? It will give you a more
>> holistic view of this data space. There are linkbases in place via
>> distinct named graphs.
>
> I see feeding the opencyc URL above to the "URI lookup" on that page 
> gives me:
>
> http://dbpedia.org/describe/?url=http%3A%2F%2Fsw.opencyc.org%2F2008%2F06%2F10%2Fconcept%2FMx4r6-wc8BKxEdeIXwCgydofLQ&sid=1283&urilookup=1 
>
>
> Which DOES have the label. But this doesn't help when Joern is relying 
> on sparql to explore the world?

See the SPARQL URL above.

Kingsley
>
> Cheers,
>
> - Gunnar
>
>
>



-- 

Regards,

Kingsley Idehen	      
President & CEO 
OpenLink Software     
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen 
Received on Wednesday, 11 August 2010 18:49:25 UTC

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