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Re: [vcard] OWL or RDF for vCard?

From: David Powell <djpowell@djpowell.net>
Date: Mon, 2 Apr 2007 14:12:05 +0100
Message-ID: <1359759738.20070402141205@djpowell.net>
To: 'Semantic Web' <semantic-web@w3.org>

A late reply:

Is it possible for a schema to be both an OWL schema and an RDFS
schema at the same time? I don't see why not - monotonicity and all
that should mean that the extra triples don't do any harm.

I tried this for my Atom/RDF schema - it is RDFS augmented with OWL
and last time I looked it was both RDFS and OWL-Lite without any
inferencing being required on the schema.

I personally am only interested in RDFS, but I won't complain if the
schema has some extra OWL gunk in it :)

I think what is more important is what expectations are going to be
made of typical implementations.  I don't want implementations to have
to do any kind of inference (RDFS or OWL) in order to use the data,
because that raises the complexity enormously.

So, I'm not keen on properties like v:tel, that to support custom
telephone x-types would require the consumer to understand
sub-properties, know that the property is a sub-property of v:tel, and
know how to serialise the rdf property uri into a vcard x-token.

I'd prefer to see some indirection via a bnode, which I think is
necessary anyway to support PREF on the relation between the vCard and
the number (rather than globally marking the telephone 'prefered' for
every vcard that references it).

Received on Monday, 2 April 2007 13:13:07 UTC

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