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Re: What is RDF Schema? [proposed closed]

From: pat hayes <phayes@ihmc.us>
Date: Fri, 1 Aug 2003 14:35:17 -0500
Message-Id: <p06001a01bb506f1ab678@[10.0.100.23]>
To: Frank Manola <fmanola@mitre.org>, Dan Brickley <danbri@w3.org>
Cc: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>, www-rdf-comments@w3.org

>I believe there may be a problem with the word "core".  It seems to 
>me we have an "rdf" vocabulary and an "rdfs" vocabulary, but not an 
>"rdf core" vocabulary (think "RDF core vocabulary" has now been 
>expunged from Concepts).

Ah, this may be my fault. I needed a word to refer to the 
subvocabulary of the RDF namespace to which the rdf semantic 
conditions apply, and I invented the name 'core RDF vocabulary'. 
Maybe that was a bad choice of terminology.

Would it be better is I used a different term, say "central RDF vocabulary" ?

There is now a version of the document at

http://www.ihmc.us/users/phayes/RDF_Semant_Edit_Central.html

which has this name change made (2 places plus change log). In all 
other respects it is identical to

http://www.ihmc.us/users/phayes/RDF_Semant_Edit_Weak.html

Pat

PS. the reason for 'central' is that it allows me to keep the 
abbreviation 'crdfV'

>--Frank
>
>Dan Brickley wrote:
>
>>* Peter F. Patel-Schneider <pfps@research.bell-labs.com> 
>>[2003-08-01 09:42-0400]
>>
>>>Looks good.
>>>
>>>I notice however, that the first sentence of Appendix A is incorrect.  The
>>>description is really an RDFS description.  I do not believe that there is
>>>an ``RDF Core vocabulary'' and if there were, this would not be it.
>>>
>>
>>currently we have:
>>"An RDF description of the RDF Core vocabulary is given here in RDF/XML
>>serialization syntax."
>>
>>I'd accept that "An RDFS description of ..." would be more appropriate.
>>
>>Then the question of what we're describing. Currently we _do_ describe
>>both the RDF namespaces owned/managed by RDF Core, ie. 
>>http://www.w3.org/2000/01/rdf-schema# but also the older 
>>http://www.w3.org/1999/02/22-rdf-syntax-ns# so our RDF/XML appendix 
>>includes claims such as:
>>
>>[[
>><rdfs:Class
>>rdf:about="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property">
>>   <rdfs:isDefinedBy
>>  rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#"/>
>><rdfs:label>Property</rdfs:label>
>><rdfs:comment>The class of RDF properties.</rdfs:comment>
>><rdfs:subClassOf 
>>rdf:resource="http://www.w3.org/2000/01/rdf-schema#Resource"/>
>></rdfs:Class>
>>]]
>>
>>I believe it is useful to present an integrated RDFS description of 
>>both sets of classes and properties, since people can never 
>>remember which lives where, and the rest of the RDFS spec also 
>>describes both.
>>
>>So question is how to describe this in Appendix A. How about this:
>>
>>"An RDF description of the RDF Core vocabulary is given here in RDF/XML
>>serialization syntax."
>>->
>>"An RDFS description of the http://www.w3.org/1999/02/22-rdf-syntax-ns#
>>and http://www.w3.org/2000/01/rdf-schema# vocabularies is given 
>>here in RDF/XML syntax."
>>
>>Kinda ugly, but perhaps less contentious?
>>
>>Dan
>>
>>
>
>
>--
>Frank Manola                   The MITRE Corporation
>202 Burlington Road, MS A345   Bedford, MA 01730-1420
>mailto:fmanola@mitre.org       voice: 781-271-8147   FAX: 781-271-875


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Received on Friday, 1 August 2003 15:35:25 GMT

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