(another) proposal for EARL Assertor class

Hi,

Thanks to some inspiring discussions with EricP, I think I finally got it. Here another proposal for the EARL Assertor class which should work quite well. Comments and feedback welcome.

APPROACH:
 * Assertor is either a single person or tool, or it is a compound of more than one of these.
 * Compound assertors have properties to express the relationships between the sub-assertors (as opposed to just a collection of assertors in the previous proposal).
 * Relationships are "mainAssertor" and "helpAssertor" to differentiate between assertors that actually make a decision, and ones that help make a decision (eg. "person using tool", "tool using person" etc).
 * helpAssertor is optional. For example, to represent a group of equally contributing assertors (eg. team of expert reviewers etc), each assertor is a mainAssertor and there are no helpAssertor properties.

SCHEMA:
  <rdfs:Class rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#Assertor">
    <rdfs:label xml:lang="en">Assertor Class</rdfs:label>
    <rdfs:comment xml:lang="en">Persons or evaluation tools that claims assertion</rdfs:comment>
    <owl:oneOf rdf:parseType="Collection">
      <owl:Thing rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#singleAssertor"/>
      <owl:Thing rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#compundAssertor"/>
    </owl:oneOf>
  </rdfs:Class>

  <rdfs:Class rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#singleAssertor">
    <rdfs:label xml:lang="en">Single Assertor Class</rdfs:label>
    <rdfs:comment xml:lang="en">One person or evaluation tool that claims assertions</rdfs:comment>
    <owl:oneOf rdf:parseType="Collection">
      <owl:Thing rdf:type="http://xmlns.com/foaf/0.1/Person">
        <rdfs:subClassOf rdf:parseType="Collection">
          <owl:Restriction>
            <owl:onProperty rdf:resource="http://xmlns.com/foaf/0.1/name"/>
            <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
              </owl:minCardinality>
          </owl:Restriction>
          <owl:Restriction>
            <owl:onProperty rdf:resource="http://xmlns.com/foaf/0.1/mbox"/>
            <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
              </owl:minCardinality>
          </owl:Restriction>
          <owl:Restriction>
            <owl:onProperty rdf:resource="http://xmlns.com/foaf/0.1/mbox_sha1sum"/>
            <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
              </owl:minCardinality>
          </owl:Restriction>
        </rdfs:subClassOf>
      </owl:Thing>
      <owl:Thing rdf:type="http://www.w3.org/WAI/ER/EARL/nmg-strawman#Software"/>
    </rdfs:oneOf>
  </rdfs:Class>

  <rdfs:Class rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#compoundAssertor">
    <rdfs:label xml:lang="en">Compound Assertor Class</rdfs:label>
    <rdfs:comment xml:lang="en">Group of persons or evaluation tools that claim assertions</rdfs:comment>
    <rdfs:subClassOf rdf:parseType="Collection">
      <owl:Restriction>
        <owl:onProperty rdf:resource="http://purl.org/dc/elements/1.1/title"/>
        <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
          </owl:minCardinality>
      </owl:Restriction>
      <owl:Restriction>
        <owl:onProperty rdf:resource="http://purl.org/dc/elements/1.1/description"/>
        <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
          </owl:minCardinality>
      </owl:Restriction>
      <owl:Restriction>
        <owl:onProperty rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#mainAssertor"/>
        <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">1
          </owl:minCardinality>
      </owl:Restriction>
      <owl:Restriction>
        <owl:onProperty rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#helpAssertor"/>
        <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">0
          </owl:minCardinality>
      </owl:Restriction>
    </rdfs:subClassOf>
  </rdfs:Class>

  <rdf:Property rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#mainAssertor">
    <rdfs:label xml:lang="en">Main Assertor</rdfs:label>
    <rdfs:comment xml:lang="en">Assertor mainly responsible for determining assertion result</rdfs:comment>
    <rdfs:subClassOf rdf:resource="http://purl.org/dc/terms/hasPart"/>
    <rdfs:domain rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#compoundAssertor"/>
    <rdfs:range rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#Assertor"/>
  </rdf:Property>

  <rdf:Property rdf:about="http://www.w3.org/WAI/ER/EARL/nmg-strawman#helpAssertor">
    <rdfs:label xml:lang="en">Help Assertor</rdfs:label>
    <rdfs:comment xml:lang="en">Assertor assisting to determine assertion result</rdfs:comment>
    <rdfs:subClassOf rdf:resource="http://purl.org/dc/terms/hasPart"/>
    <rdfs:domain rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#compoundAssertor"/>
    <rdfs:range rdf:resource="http://www.w3.org/WAI/ER/EARL/nmg-strawman#Assertor"/>
  </rdf:Property>


Regards,
  Shadi


-- 
Shadi Abou-Zahra,     Web Accessibility Specialist for Europe 
Chair and Team Contact for the Evaluation and Repair Tools WG 
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Received on Sunday, 28 August 2005 10:16:33 UTC