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ISSUE-149: Last Call Comment: Asymmetric associations

From: Alistair Miles <alistair.miles@zoo.ox.ac.uk>
Date: Thu, 6 Nov 2008 09:27:23 +0000
To: Erik Hennum <ehennum@us.ibm.com>
Cc: public-swd-wg@w3.org
Message-ID: <20081106092722.GK12933@skiathos>

Dear Erik, 

Many thanks for your support and you helpful comments. In response to
your comment below:

On Wed, Oct 01, 2008 at 09:17:15PM +0000, SWD Issue Tracker wrote:
> ISSUE-149: Last Call Comment: Asymmetric associations 
> http://www.w3.org/2006/07/SWD/track/issues/149
> Raised by: Alistair Miles
> On product: SKOS
> Raised by Erik Hennum in [1]:
> """
> In our experience, while we've had no need for symmetric associations,
> we've had considerable need for directional, non-hierarchical associations.
> For instance, our target audience perceives a directional association
> between a hardware platform and the operating systems that run on the
> platform and again between an operating system and the software
> applications that run on the operating system.
> In Section 8.6.3. Symmetry of skos:related, the draft makes a point of
> providing examples of asymmetric subproperties of skos:related, suggesting
> that our experience may not be unusual.
> Is this requirement sufficiently common that it makes sense to provide an
> asymmetric subproperty of skos:related as part of the standard rather than
> have many adopters solve the same problem in different ways?  Effectively,
> this subproperty would be a broader / narrower relationships that does
> _not_ entail or imply the weak transitive associations that construct the
> hierarchy.
> """

While we are sympathetic to these requirements, at the current time we
propose to postpone development of a standard solution and leave it
for future working groups or for third party extensions developed
within the community of practice. Both the SKOS Reference (section
8.6.3) and the SKOS Primer (section 4.7) currently provide examples of
how to develop third party extensions to SKOS semantic relations. Can
you live with this?

Kind regards,


[1] http://lists.w3.org/Archives/Public/public-swd-wg/2008Jun/0103.html

Alistair Miles
Senior Computing Officer
Image Bioinformatics Research Group
Department of Zoology
The Tinbergen Building
University of Oxford
South Parks Road
United Kingdom
Web: http://purl.org/net/aliman
Email: alistair.miles@zoo.ox.ac.uk
Tel: +44 (0)1865 281993
Received on Thursday, 6 November 2008 09:28:30 UTC

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