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

From: Dan Brickley <danbri@google.com>
Date: Fri, 30 Nov 2012 19:23:36 +0000
Message-ID: <CAK-qy=6-j=+tBep7eFZ2davDD02vNy+zMXFz_5kbnthWCpL2wg@mail.gmail.com>
To: public-vocabs@w3.org
Hi folks

A few things on the schema.org front:

1. Back in April there was some discussion towards an improved model
for Actions/Activities. I have just uploaded a new work-in-progress
document giving a first minimal version of a new approach, based on
discussion amongst the schema.org partners. It is still in rough form
but there should be enough to give a good impression of the thinking
behind it. The draft describes some vocabulary structures that allow
description of potential/possible future actions, as well as
actions/activities that have occurred. While this touches on themes
addressed by a variety of other efforts (including but not limited to
RSS/Atom/ActivityStreams for past-tense 'activities'; Good Relations
for commerce-related action opportunities; WebIntents, ...), we have
focussed for now on describing a basic core structure that balances
simplicity and expressiveness.

A fairly short PDF document
http://www.w3.org/wiki/images/7/79/Schema.orgActionsMinimaldraft.pdf
is linked from http://www.w3.org/wiki/WebSchemas/ActivityActions


2. The Audience proposal; based on the RDFa schema in
https://bitbucket.org/elderos/schemaorg/src I've built a test version
of the schema.org site that includes the Audience proposal (see
http://www.w3.org/wiki/WebSchemas/Audience ). The draft site is at
http://sdo99a.appspot.com e.g. see http://sdo99a.appspot.com/Audience

This is the second use of the HTML+RDFa+RDFS extension machinery I
mentioned recently
(http://lists.w3.org/Archives/Public/public-lod/2012Nov/0011.html).
More should follow - there are quite a few proposals pretty much
ready, so I'll first put them up as individual test sites for review.


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.


Comments on any / all of the above are welcomed; ideally in the
WebSchemas area of the W3C wiki or here on public-vocabs. If you reply
by mail please adjust the Subject line to match your topic...

cheers,

Dan
Received on Friday, 30 November 2012 19:24:07 GMT

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