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'prefLabel' and 'descriptor'

From: Miles, AJ (Alistair) <A.J.Miles@rl.ac.uk>
Date: Thu, 4 Mar 2004 11:08:59 -0000
Message-ID: <350DC7048372D31197F200902773DF4C04944130@exchange11.rl.ac.uk>
To: 'Leonard Will' <L.Will@willpowerinfo.co.uk>
Cc: "'public-esw-thes@w3.org'" <public-esw-thes@w3.org>

Hi Leonard,

Thanks alot for these comments.

In SKOS-Core 1.0 there will only be a 'prefLabel' property (the 'descriptor'
property has been dropped).

This change originally proposed in response to Stella's comments, in mail
<http://lists.w3.org/Archives/Public/public-esw-thes/2004Jan/0001.html>.

Al.

---
Alistair Miles
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> -----Original Message-----
> From: public-esw-thes-request@w3.org
> [mailto:public-esw-thes-request@w3.org]On Behalf Of Leonard Will
> Sent: 04 March 2004 10:50
> To: public-esw-thes@w3.org
> Subject: Re: Thesaurus FAQ Entry: 'How can I make my 
> thesaurus a part of
> the s emantic web?'
> 
> 
> 
> In message 
> <350DC7048372D31197F200902773DF4C0494412D@exchange11.rl.ac.uk>
>  on Thu, 4 
> Mar 2004, "Miles, AJ (Alistair)" <A.J.Miles@rl.ac.uk> wrote
> >
> >Just blogged this FAQ item, 
> <http://esw.w3.org/mt/esw/archives/000045.html>.
> 
> This looks a useful summary of where we are. Thanks. (A pity 
> though that 
> it is in pale grey type - I had to use the accessibility option to 
> "ignore colors specified on Web pages" to make it easily legible.)
> 
> I haven't followed up all the links, but was a bit puzzled by the 
> distinction between "preferred-label" and "descriptor" in SKOS-Core. 
> They seem to me to be the same thing.
> 
> I take it that any labels that are not "preferred-labels" are 
> by default 
> "non-preferred labels" or "nondescriptors", so that is the reason why 
> these are not explicitly provided for.
> 
> You have
> 
> preferred-label
> Use this property to indicate a literal which is the 
> preferred label for 
> a resource. If a resource has this property, all other rdfs:label 
> properties are considered to be the 'alternative' (i.e. 
> non-preferred) 
> labels.
> 
> and
> 
> descriptor
> A 'descriptor' is a label that uniquely identifies a concept within a 
> conceptual scheme. A descriptor must be unambiguous. Examples of good 
> descriptors are 'Orange (fruit)' and 'Java programming language'. 
> Examples of poor descriptors are 'Orange' and 'Java'.
> 
> Is there any significance in the fact that the first 
> definition refers 
> to "a resource" while the second refers to "a concept"?
> 
> In <http://www.w3c.rl.ac.uk/SWAD/deliverables/8.1.html#2.2> we read:
> 
> (a) The soks:prefLabel property is a sub-property of rdfs:label.
> 
> (b) The soks:descriptor proeprty [sic.] is a sub-property of 
> soks:prefLabel. Therefore a concept cannot have both a 
> descriptor and a 
> prefLabel.
> 
> I can see no place for a preferred label that is not a descriptor.
> 
> If the "Therefore . . ." statement in (b) is a consequence of 
> the first 
> sentence of (b), would there not be a parallel conclusion in (a) : 
> "Therefore a concept cannot have both a prefLabel and a 
> label".  Such a 
> conclusion seems incorrect.
> 
> Leonard
> 
> -- 
> Willpower Information       (Partners: Dr Leonard D Will, 
> Sheena E Will)
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> ---------------- <URL:http://www.willpowerinfo.co.uk/> 
> -----------------
> 
Received on Thursday, 4 March 2004 06:09:32 GMT

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