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Re: Links from Myspace to Musicbrainz

From: Yves Raimond <yves.raimond@gmail.com>
Date: Thu, 16 Jul 2009 10:32:44 +0100
Message-ID: <82593ac00907160232r14ec67bfg128e25861b19594@mail.gmail.com>
To: Leigh Dodds <leigh.dodds@talis.com>
Cc: Kurt J <kurtjx@gmail.com>, Simon Reinhardt <simon.reinhardt@koeln.de>, public-lod@w3.org, music-ontology-specification-group@googlegroups.com
Hello Leigh!

>
> Can you provide some examples of the data? I was looking for myspace
> links in the MusicBrainz data set earlier in the week but couldn't
> find any.
>
> This query:
>
> PREFIX mo: <http://purl.org/ontology/mo/>
> SELECT ?myspace WHERE {
>  ?x mo:myspace ?myspace.
> }
> LIMIT 10
>
> Returns no results from the musicbrainz SPARQL endpoint linked from
> [1] and eventually times out with a Proxy error from [2]. I also tried
> some variants using foaf:isPrimaryTopicOf. I'm probably missing
> something here.

The links to myspace are using owl:sameAs. The mo:myspace property
points to a document (the myspace page), whereas we're asserting
sameAs links between the same artists in Musicbrainz and Myspace. Try
something like:

PREFIX mo: <http://purl.org/ontology/mo/>
SELECT ?myspace WHERE {
 ?x a mo:MusicArtist;
   owl:sameAs ?myspace.
FILTER ( REGEX(str(?myspace), "^http://dbtune.org") )
}
LIMIT 10

Cheers!
y
Received on Thursday, 16 July 2009 09:33:25 UTC

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