DwcTypeVocabulary

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 Work in progress: Please do not edit this page while you see this. Expecting to finish by about when done — BobMorris Last edit of page on: 2009-10-17 

Some comments on DwC RDF modeling of dcterms:type. This is the rdf:Description from http://rs.tdwg.org/dwc/rdf/dwcterms.rdf

 <rdf:Description rdf:about="DwCType">
    <rdfs:label xml:lang="en-US">DwCType</rdfs:label>	
    <rdfs:comment xml:lang="en-US">The set of classes specified by the Darwin Core Type Vocabulary, used to categorize the nature or genre of the resource.</rdfs:comment>
    <rdfs:isDefinedBy rdf:resource="http://rs.tdwg.org/dwc/terms/"/>
    <dcterms:issued>2008-11-19</dcterms:issued>
    <dcterms:modified>2008-11-19</dcterms:modified>
    <rdf:type rdf:resource="http://purl.org/dc/dcam/VocabularyEncodingScheme"/>
    <dcterms:hasVersion rdf:resource="http://rs.tdwg.org/dwc/terms/history/#DwCType-2008-11-19"/>
    <rdfs:replaces rdf:resource="http://rs.tdwg.org/dwc/terms/DwCType-2008-11-19"/>
    <dwcattributes:status>recommended</dwcattributes:status>
    <dwcattributes:abcdEquivalence>RecordBasisEnum/FossileSpecimen</dwcattributes:abcdEquivalence>
 </rdf:Description>

Note that the normative(?) | abstract dwc type-vocabulary specifies that this resource is a Class, the only thing it specifies above is that it is a dc:VocabularyEncodingScheme.

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE rdf:RDF [
   <!ENTITY rdfns 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
   <!ENTITY rdfsns 'http://www.w3.org/2000/01/rdf-schema#'>
   <!ENTITY dcns 'http://purl.org/dc/elements/1.1/'>
   <!ENTITY dctermsns 'http://purl.org/dc/terms/'>
   <!ENTITY dctypens 'http://purl.org/dc/dcmitype/'>
   <!ENTITY dcamns 'http://purl.org/dc/dcam/'>
 ]>
 <rdf:RDF xmlns:dcam="http://purl.org/dc/dcam/"
     xmlns:dcterms="http://purl.org/dc/terms/" 
     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
     xmlns:rdfs="http://www.w3.org/2000/0/rdf-schema#">
    <rdf:Description rdf:about="http://purl.org/dc/dcam/">
        <dcterms:title xml:lang="en-US">DCMI Namespace for metadata terms related to the DCMI Abstract Model</dcterms:title>
        <rdfs:comment>To comment on this schema, please contact dcmifb@dublincore.org.</rdfs:comment>
        <dcterms:publisher xml:lang="en-US">The Dublin Core Metadata Initiative</dcterms:publisher>
        <dcterms:modified>2008-01-14</dcterms:modified>
     </rdf:Description>
     <rdf:Property rdf:about="http://purl.org/dc/dcam/memberOf">
         <rdfs:label xml:lang="en-US">Member Of</rdfs:label>
         <rdfs:comment xml:lang="en-US">A relationship between a resource and a vocabulary encoding scheme which indicates that the resource is a member of a set.</rdfs:comment>
         <rdfs:isDefinedBy rdf:resource="http://purl.org/dc/dcam/"/>
         <dcterms:issued>2008-01-14</dcterms:issued>
         <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
         <dcterms:hasVersion rdf:resource="http://dublincore.org/usage/terms/history/#memberOf-001"/>
         <rdfs:seeAlso rdf:resource="http://dublincore.org/documents/2007/06/04/abstract-model/"/>
     </rdf:Property>
     <rdfs:Class rdf:about="http://purl.org/dc/dcam/VocabularyEncodingScheme">
         <rdfs:label xml:lang="en-US">Vocabulary Encoding Scheme</rdfs:label>
         <rdfs:comment xml:lang="en-US">An enumerated set of resources.</rdfs:comment>
         <rdfs:isDefinedBy rdf:resource="http://purl.org/dc/dcam/"/>
         <dcterms:issued>2008-01-14</dcterms:issued>
         <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
         <dcterms:hasVersion rdf:resource="http://dublincore.org/usage/terms/history/#VocabularyEncodingScheme-001"/>
        <rdfs:seeAlso rdf:resource="http://dublincore.org/documents/2007/06/04/abstract-model/"/>
     </rdfs:Class>
</rdf:RDF>

So we have to look at an example of the putative dwc Classes

<rdf:Description rdf:about="http://rs.tdwg.org/dwc/dwctype/Occurrence">	
   <rdfs:label xml:lang="en-US">Occurrence</rdfs:label>
   <rdfs:comment xml:lang="en-US">A resource describing an occurrence.</rdfs:comment>
   <rdfs:isDefinedBy rdf:resource="http://rs.tdwg.org/dwc/dwctype/"/>
   <dcterms:issued>2008-11-19</dcterms:issued>	
   <dcterms:modified>2008-11-19</dcterms:modified>
   <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
   <dcterms:hasVersion rdf:resource="http://rs.tdwg.org/dwc/dwctype/#Occurrence-2009-04-24"/>
   <dcam:memberOf rdf:resource="http://rs.tdwg.org/dwc/terms/DwCType"/>
   <rdfs:subClassOf rdf:resource="http://purl.org/dc/dcmitype/Event"/>
   <rdfs:replaces rdf:resource="http://rs.tdwg.org/dwc/terms/Occurrence-2009-04-24"/>
   <dwcattributes:status>recommended</dwcattributes:status>
   <dwcattributes:abcdEquivalence>not in ABCD</dwcattributes:abcdEquivalence>
</rdf:Description>