W3C home > Mailing lists > Public > public-vocabs@w3.org > October 2011

Re: URIs for properties at schema.org

From: John Panzer <jpanzer@google.com>
Date: Fri, 14 Oct 2011 12:47:59 -0700
Message-ID: <CAJu8rwXzzxUaF25PYff8MB6T0Wgjb5xv52C1GTxX_m7OcuieQw@mail.gmail.com>
To: Bernard Vatant <bernard.vatant@mondeca.com>
Cc: public-vocabs@w3.org, Michael Hausenblas <michael.hausenblas@deri.org>
On a related note, I've experienced and observed some confusion about the
scope of property definitions as defined in the English spec.  It's clear
from looking at the OWL source [1] that all of the existing schema.org types
that include, e.g., "duration", are really all talking about a common
property "http://schema.org/duration".  But that's not as clear from the web
site text.

I think there's an implied promise that all schema.org properties are in a
single global schema.org namespace now and in the future, and that any
schema.org extensions will honor that [2].  Being able to rely on this would
help me simplify certain schema.org specific code a bit.  Based on this
thread and other discussions I'm going to go ahead and assume this property.
 It would be good to document it officially too.

John Panzer

[1] http://schema.org/docs/schemaorg.owl
[2] Of course non-schema.org microdata entities can exist and won't follow
these rules; I'm just trying to document what comprises a well defined
schema.org extension.

On Mon, Oct 10, 2011 at 7:15 AM, Bernard Vatant
<bernard.vatant@mondeca.com>wrote:

> Hello all
>
> URIs for schema.org properties, based on their labels, are used by both
> "official" OWL version at [1] and rdfs.org version at [2].
> Class URIs such as http://schema.org/Person are dereferencable even if
> they do not (yet) provide a RDFdescription of what they mean ...
> But property URIs such as http://schema.org/about are just 404.
>
> Are there any plan to have at least html minimal description of properties
> at those URIs, like a definition and the list of classes using them?
>
> Bernard
>
> [1] http://schema.org/docs/schemaorg.owl
> [2] http://schema.rdfs.org/all.rdf
>
>
>
> --
> *Bernard Vatant
> *
> Vocabularies & Data Engineering
> Tel :  + 33 (0)9 71 48 84 59
>  Skype : bernard.vatant
>
> --------------------------------------------------------
>
> *Mondeca**          **                   *
> 3 cité Nollez 75018 Paris, France
> www.mondeca.com
> Follow us on Twitter : @mondecanews <http://twitter.com/#%21/mondecanews>
>
>
Received on Friday, 14 October 2011 19:48:46 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 22 May 2012 06:48:56 GMT