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[Fwd: Euracert vocabulary]

From: Shadi Abou-Zahra <shadi@w3.org>
Date: Thu, 03 Jul 2008 08:43:03 +0200
Message-ID: <486C74F7.6000504@w3.org>
To: ERT WG <public-wai-ert@w3.org>
Hi group,

Ref: <http://lists.w3.org/Archives/Public/public-powderwg/2008Jul/0000>

This thread on the POWDER WG mailing list may be interesting. We've had 
a long standing intention of developing such a vocabulary for WCAG 2.0. 
Would be important to start developing one so that the POWDER WG folks 
can work with.


-------- Original Message --------
Subject: Euracert vocabulary
Resent-Date: Wed, 02 Jul 2008 13:07:37 +0000
Resent-From: public-powderwg@w3.org
Date: Wed, 02 Jul 2008 14:06:45 +0100
From: Phil Archer <parcher@icra.org>
Organization: FOSI
To: Public POWDER <public-powderwg@w3.org>

Bcc. Quatro Plus consortium

After a good deal of going back and forth, I'm pleased to be able to
post this to the list - it's the Euracert accessibility vocabulary. Lots
of names here but the basic thing is that Alan's created this on behalf
of Technosite using the UWEM methodology [1] of testing against the W3C
WCAG guidelines!

The vocabulary is quite long but pretty straightforward. For each WCAG
(1.0) checkpoint there's a testing method, defined by UWEM at [2]. Hence
the vocabulary defines a load of properties with a name of the form
cpx.y_compliance. These carry an rdfs:isdefinedBy property linking to
[2] and an rdfs:seeAlso property pointing to the WGAG checkpoint from
which the test is derived.

But... the more usual way of describing a web site or other bunch of
resources as being accessible is using the A, AA and AAA levels and
these are defined as OWL classes, each with a series of property
restrictions - i.e. the list of checkpoints that must have been passed
to reach that level. AAA is a sub class of AA which is a subclass of A.
The vocabulary also includes a load of metadata.

Using the vocabulary as Technosite/Euracert and, (I think/hope) Segala,
will, creates a DR like this:


      <displaytext>The www.aena.es webiste conforms to
       Euracert AA</displaytext>
          src="http://www.euracert.org/images/euracert_logoAA.gif" />

The attached powder.xml file shows how a full POWDER document would
look. I believe Alan will have the vocabulary (and the Technosite FOAF
file) online soon.

Note that this example uses the <is> element within the descriptorset
which is under active discussion within the working group. An
alternative encoding would be

<descriptorset is="http://www.euracert.org/rdfs/vocabularyv01#uwem10_A">
    <displaytext>The www.aena.es webiste conforms to
         Euracert AA</displaytext>
         src="http://www.euracert.org/images/euracert_logoAA.gif" />

Either way, in POWDER-S the IRI set would be a sub class of
http://www.euracert.org/rdfs/vocabularyv01#uwem10_A. Whichever we end up
using will also apply to mobileOK.



[1] http://www.wabcluster.org/uwem1/
[2] http://www.wabcluster.org/uwem/tests/

Shadi Abou-Zahra - http://www.w3.org/People/shadi/ |
   WAI International Program Office Activity Lead   |
  W3C Evaluation & Repair Tools Working Group Chair |

Received on Thursday, 3 July 2008 06:43:43 UTC

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