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RE: [SKOS] ISSUE-44 (was: Suggestion for SKOS FAQ)

From: Johan De Smedt <johan.de-smedt@tenforce.com>
Date: Thu, 29 May 2008 13:07:21 +0200
To: "'Antoine Isaac'" <aisaac@few.vu.nl>, "'Alistair Miles'" <alistair.miles@zoo.ox.ac.uk>
Cc: <public-esw-thes@w3.org>, "'SWD WG'" <public-swd-wg@w3.org>
Message-ID: <005701c8c17c$2ade3410$6973a8c0@TFJOHAN>

Hi Alisair

Thanks a lot for the notification.
I do feel uncomfortable because a mapping implicitly entails a hierarchy
(still have to check what this will mean for exactMatch - can I somewhere
find the new statements in a comprehensive draft version ?)
But maybe that is just my thinking pattern that needs to adapt.
Within that pattern, the application I handle considers the mapped (matched)
concepts to belong to 2 different concept-schema.
So there is no hierarchy intended, just a matching.

kr, Johan De Smedt. 
-----Original Message-----
From: public-esw-thes-request@w3.org [mailto:public-esw-thes-request@w3.org]
On Behalf Of Antoine Isaac
Sent: Thursday, 29 May, 2008 10:41
To: Alistair Miles
Cc: public-esw-thes@w3.org; 'SWD WG'
Subject: Re: [SKOS] ISSUE-44 (was: Suggestion for SKOS FAQ)

Alistair Miles a écrit :
> Hi all,
> The current SKOS Reference Working Draft [1] takes the following position.
> The property skos:broader is, by convention, used to assert a "direct"
> hierarchical link between two concepts. 

Note that this 'link' also include 'hierarchical mapping links' since
skos:broadMatch is made a suproperty of skos:broader (which means that every
assertion of skos:broadMatch entails one assertion of skos:broader).
Somehow I feel like your text also fits the situation, even when the
interpretation of 'hierarchical link' is made a bit different from what it
But I wanted to flag the issue to people of the SKOS mailing list which
might not have noticed this new resolution, eventually to get feedback from



> The property skos:broaderTransitive is used to infer the transitive 
> closure of hierarchical links, i.e. all "direct" and "indirect" 
> hierarchical links between concepts.
> A software application can use skos:broader to query for direct 
> hierarchical links, and can use skos:broaderTransitive to query for 
> all (direct and
> indirect) hierarchical links.
> This is a pragmatic position, supporting software applications that 
> need to access both direct and indirect hierarchical links.
> Note that many thesaurus software applications have this need, 
> regardless of your philosophical position on whether the thesaurus 
> hierarchical relationship is transitive or not.
> Cheers,
> Alistair.
> [1] http://www.w3.org/TR/2008/WD-skos-reference-20080125/
> --
> Alistair Miles
> Senior Computing Officer
> Image Bioinformatics Research Group
> Department of Zoology
> The Tinbergen Building
> University of Oxford
> South Parks Road
> Oxford
> OX1 3PS
> United Kingdom
> Web: http://purl.org/net/aliman
> Email: alistair.miles@zoo.ox.ac.uk
> Tel: +44 (0)1865 281993
Received on Thursday, 29 May 2008 11:08:24 UTC

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