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Re: schema.org weekend reading: Actions/Activities; Audience draft, and Class/Property.

From: Ivan Herman <ivan@w3.org>
Date: Fri, 30 Nov 2012 15:21:47 -0500
Cc: W3C Web Schemas Task Force <public-vocabs@w3.org>, Gregg Kellogg <gregg@greggkellogg.net>
Message-Id: <31E7A9F2-E5DD-4C0B-B6C0-B9619D9F499A@w3.org>
To: Dan Brickley <danbri@google.com>
Dan,

a very specific additional step:

[snip]
> 
> 
> 3. Class/Property
> 
> There are several cases (including the above-mentioned Actions draft)
> where it is useful within schema.org to have a first class type
> representing the notion of 'Class', and of 'Property'. This is rather
> meta and while it is not something designed for mainstream webmasters
> to encounter, it will help with structuring and documenting the
> vocabulary.
> 
> I have written up a proposal for adding these (and aliasing them to
> rdfs:Class, rdf:Property) at
> http://www.w3.org/wiki/WebSchemas/SchemaDotOrgMetaSchema  ...alongside
> a proposal to use schema.org/domainIncludes and
> schema.org/rangeIncludes in our RDFa representation of the schema.
> 

What this also means is that the registry (see also [1,2]) used for the microdata->RDF conversion at

http://www.w3.org/ns/md

should be extended for schema.org with:

'Class'    : { subPropertyOf: http://www.w3.org/2000/01/rdf-schema#Class }
'Property' : { subPropertyOf: http://www.w3.org/1999/02/22-rdf-syntax-ns#Property }

Correct? If so, I will add those.

Ivan



[1] http://www.w3.org/TR/2012/NOTE-microdata-rdf-20121009/#vocabulary-registry
[2] http://www.w3.org/TR/2012/NOTE-microdata-rdf-20121009/#vocabulary-expansion


----
Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Friday, 30 November 2012 20:22:14 GMT

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