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Re: Wikidata export in RDF

From: Peter F. Patel-Schneider <pfpschneider@gmail.com>
Date: Mon, 06 Aug 2012 08:01:18 -0400
Message-ID: <501FB20E.1080308@gmail.com>
To: Denny Vrandečić <denny.vrandecic@wikimedia.de>
CC: Semantic Web mailing list <semantic-web@w3.org>

The general approach appears to be acceptable.

I would like to have some use of the base relationship in the encoding.   As 
it stands right now, there is no relationship between p:Population and 
anything in the encoding, meaning that users cannot reliably infer the 
relationship between the encoding and the base relationship.  Of course, human 
users can make guesses (perhaps by looking inside the IRIs), but this does not 
work for systems.

It looks as if rdf:label is a tyop for rdfs:label.  However, I don't think 
that rdfs:label should be used here.  I think that it would be even better to 
use some other property here.  Note, in particular, that adding provenance 
should change an rdfs:label property constructed in this way.

I would suggest using a <=0 restriction instead of an all restriction to the 
empty class for the no value SNAK, even though they have the same semantics.

I suggest not using the RDF encoding for OWL restrictions.


PS:  I believe that the xsd:date format is YYYY-MM-DD, not DD-MM-YYY.

On 08/06/2012 06:03 AM, Denny Vrandečić wrote:
> Hi all,
> we have created the first draft of the Wikidata export in RDF.
> <http://meta.wikimedia.org/wiki/Wikidata/Development/RDF>
> I am inviting the Semantic Web and Linked Data community to a
> discussion about it.
> Cheers,
> Denny
Received on Monday, 6 August 2012 12:01:54 UTC

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