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Re: Comment: ISSUE-70

From: Sean Bechhofer <sean.bechhofer@manchester.ac.uk>
Date: Tue, 12 Feb 2008 17:08:30 +0000
Message-Id: <7728477E-2627-4254-AA7E-AA21DB96CF05@manchester.ac.uk>
Cc: <public-swd-wg@w3.org>
To: "Deridder, Jody L" <rde2@utk.edu>


On 12 Feb 2008, at 16:45, Deridder, Jody L wrote:

>
>
> Hi Sean!
>     You're correct:  if each is a subset of the other, they are
> identical.
>
>   So, if skos:broader is supposed to represent something more general
> than a set or subset, could you please give examples to support what
> that could be, to which this subset reasoning would not apply?


The SKOS Reference [1] Section 7.1 says:

[[
The Simple Knowledge Organization System distinguishes between two  
basic categories of semantic relation: hierarchical and associative.  
A hierarchical link between two conceptual resources indicates that  
one is in some way more general ("broader") than the other ("narrower").
]]

skos:broader might be used to represent part-whole or instance  
relationships, which aren't strictly sub/super set, e.g. from [2]:

fairy tales
   Cinderella
   Rumpelstiltskin

nervous system
   central nervous system
     brain

armies
   divisions (military)
     battalions
       regiments

Cheers,

	Sean

[1] http://www.w3.org/TR/2008/WD-skos-reference-20080125/
[2] http://www.slis.kent.edu/~mzeng/Z3919/43hierarchy.htm

--
Sean Bechhofer
School of Computer Science
University of Manchester
sean.bechhofer@manchester.ac.uk
http://www.cs.manchester.ac.uk/people/bechhofer
Received on Tuesday, 12 February 2008 17:12:19 UTC

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