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[SKOS] Possible issue: Uniqueness of skos:prefLabel [was Re: [SKOS] inconsistency between Guide and Specification

From: Guus Schreiber <schreiber@cs.vu.nl>
Date: Tue, 27 Feb 2007 13:01:23 +0100
Message-ID: <45E41D93.9060506@cs.vu.nl>
CC: SWD WG <public-swd-wg@w3.org>

Guus Schreiber wrote:
> While trying to write down a resolution for the relationship between 
> labels I found:
> in the Core Guide, section on Multilingual La belling [1]
> [[
>   It is recommended that no two concepts in the same concept scheme be 
> given the same
>   preferred lexical label in any given language.
> ]]
> in the Core Specification, table of prefLabel [2]
> [[
>   No two concepts in the same concept scheme may have the same value for 
> skos:prefLabel
>   in a given language.
> ]]

I see no need for placing a constraint on the 
uniqueness of skos:prefLabel. While some/many 
vocabularies will actually abide to this, the URI 
of the concept the label is related already 
ensures uniqueness of the concept being identified 
(which I assume was the reason for including this 
constraint in the ISO spec). I also suggest that 
there is no need to place cardinality constraints 
on skos:prefLabel.

The underlying rationale is that we should refrain 
from overcommiting the SKOS specification when 
there is no clear need.

I want to raise this as an issue and propose the 
above as a resolution.

> The weaker constraint in the Guide makes sense to me. I will most likely 
> propose an even weaker version in my resolution.
> Guus
> [1] http://www.w3.org/TR/2005/WD-swbp-skos-core-guide-20051102/#secmulti
> [2] http://www.w3.org/TR/swbp-skos-core-spec/#prefLabel

Vrije Universiteit Amsterdam, Computer Science
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Home page: http://www.cs.vu.nl/~guus/
Received on Tuesday, 27 February 2007 12:01:42 UTC

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