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RE: [SKOS] Standalone definitions in natural language; previous links in headers

From: Sini, Margherita (KCEW) <Margherita.Sini@fao.org>
Date: Tue, 25 Mar 2008 16:00:36 +0100
To: Thomas Baker <baker@sub.uni-goettingen.de>, Alistair Miles <alistair.miles@zoo.ox.ac.uk>
Cc: public-swd-wg@w3.org, "Booth, David (HP Software - Boston)" <dbooth@hp.com>
Message-id: <BA453B6B6B217B4D95AF12DBA0BFB669037A043F@hqgiex01.fao.org>

what about the idea we mention of having more clear name for relationships
such as 

 - skos:hasBroader
 - skos:hasNarrower
 - skos:hasRelated


-----Original Message-----
From: public-swd-wg-request@w3.org [mailto:public-swd-wg-request@w3.org] On
Behalf Of Thomas Baker
Sent: 25 March 2008 15:14
To: Alistair Miles
Cc: Thomas Baker; public-swd-wg@w3.org; Booth, David (HP Software - Boston)
Subject: [SKOS] Standalone definitions in natural language; previous links in


On Tue, Mar 18, 2008 at 02:56:54PM +0000, Alistair Miles wrote:
> >>I imagine the directionality is somewhere stated, but in searching
> >>throught the SKOS Reference for several minutes I was unable to find it 
> >>in the obvious places, such as the section on skos:broader:
> >>http://www.w3.org/TR/2008/WD-skos-reference-20080125/#broader
> >>or in Section 7 on its semantics:
> >>http://www.w3.org/TR/2008/WD-skos-reference-20080125/#L2055
> >>or even in the examples:
> >>http://www.w3.org/TR/2008/WD-skos-reference-20080125/#L2157
> >>
> >>I think a statement needs to be added somewhere, even if it is 
> >>merely in
> >>the example, saying something like:
> >>[[
> >>        :a skos:broader :b .
> >>
> >>indicates that :b is a broader concept than :a.
> >>]]

> >I assume the entries in Section 13 of SKOS Reference [1] will need to 
> >show Definitions, as in the 2005 spec [2] (and, as in 200, perhaps a 
> >clickable index of Classes and Properties in the upper right corner).
> I had no intention to add definitions to these tables. I think the
> sections of the main body of the document itself serve perfectly well as 
> definitions, there is no need to create standalone definitions for each 
> class or property.
> I'm reluctant to work on separate definitions because agreeing on 
> short
> standalone definitions can be very hard, and could take time we don't 
> necessarily have to spend.

I see that the RDF vocabularies [8,9] use natural-language definitions but
the OWL vocabulary [10] does not.

In the case of SKOS, not using natural-language definitions would mean not
creating definitions for new properties, such as skos:seeLabelRelation, but
it would also mean throwing out definitions used in the 2005 specification

Definitions would provide a ready-reference answer to David's original
question (see above), who wanted to know what is broader than what with

I know from experience with Dublin Core how much work it can
be to agree on short standalone definitions but wonder if it
is a good idea simply to dispense with them, and whether it sets the right
precedent for other such vocabularies, especially given the broad audience
that SKOS is intended to reach.

> >David's observation makes me notice that the current SKOS Reference 
> >[3] lacks a Previous version: link.  As the Latest
> >Version: link of the older SWBP draft [4] now redirects to [3], need 
> >there not be an unbroken chain of Previous version: links from [5] to 
> >[6]?  (Or is it the link from [4] to [3] that is in error?)
> There is a note about superseding the older draft (with a link) in the
> SOTD section.

Other Working Drafts, such as RDFa Syntax [7], have Previous version: links
in the headers.  Previous version: links are used in the example page [12] I
generated using the pubrules filter [11] - maybe Ralph can say if these links
are actually required?


> >[1] http://www.w3.org/TR/2008/WD-skos-reference-20080125/#broader
> >[2] 
> >http://www.w3.org/TR/2005/WD-swbp-skos-core-spec-20051102/#broader
> >[3] http://www.w3.org/TR/skos-reference/
> >[4] http://www.w3.org/TR/swbp-skos-core-spec
> >[5] http://www.w3.org/TR/2008/WD-skos-reference-20080125/
> >[6] http://www.w3.org/TR/2005/WD-swbp-skos-core-spec-20051102/

[7] http://www.w3.org/TR/2008/WD-rdfa-syntax-20080221/
[8] http://www.w3.org/1999/02/22-rdf-syntax-ns#
[9] http://www.w3.org/2000/01/rdf-schema#
[10] http://www.w3.org/2002/07/owl#
[11] http://www.w3.org/2005/07/pubrules

Tom Baker - tbaker@tbaker.de - baker@sub.uni-goettingen.de
Received on Tuesday, 25 March 2008 15:01:22 UTC

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