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Euracert vocabulary

From: Phil Archer <parcher@icra.org>
Date: Wed, 02 Jul 2008 14:06:45 +0100
Message-ID: <486B7D65.8010107@icra.org>
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:

<dr>
   <iriset>
     <includehosts>example.com</includehosts>
   </iriset>

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

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>
   <displayicon
        src="http://www.euracert.org/images/euracert_logoAA.gif" />
</descriptorset>

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.

Cheers

Phil.


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


Received on Wednesday, 2 July 2008 13:07:36 GMT

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