• To: Danny Ayers <danny666@v...>, xml-dev <xml-dev@l...>
• Subject: Re: OWL for the XML layer
• From: Lyndon J B Nixon <nixon@f...>
• Date: Fri, 22 Nov 2002 13:38:43 +0100
• References: <EBEPLGMHCDOJJJPCFHEFCEBAIJAA.danny666@v...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.0) Gecko/20020530

Danny Ayers wrote:

>>NB One sentence summary: I can assert myrdf:ZipCode owl:samePropertyAs 
>>yourrdf:PostCode
>>but why can't I also assert  myxml:ZipCode owl:sameDatatypeAs 
>>yourxml:PostCode.
>>    
>>
>
>You can assert it, but what does it mean?
>
that the element ZipCode in my XML Schema has the same semantic meaning 
as the element PostCode in your XML Schema.
If I understand correctly, OWL only allows this to be done if ZipCode 
and PostCode are RDF properties. However
the differentiation that XML/XMLS is purely syntactical and RDF/RDFS 
semantic is false; XML vocabulary authors
associate human-understandable meaning to their schemas (most humans 
will understand what is meant when an address contains a XML element 
called ZipCode or PostCode). But how to extend this semantic meaning to be
machine processable, if the Web ontology languages won't permit it?

lyndon

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