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Re: [SKOS] Proposed Resolution for ISSUE 26: RelationshipBetweenLabels

From: Jon Phipps <jphipps@madcreek.com>
Date: Tue, 27 Feb 2007 09:52:10 -0500
Message-ID: <34b5049c0702270652o26dbf3b8ud0ca28f0c4108899@mail.gmail.com>
To: "Guus Schreiber" <schreiber@cs.vu.nl>
Cc: "SWD WG" <public-swd-wg@w3.org>

Hi Guus,
Response inline, below...

--Jon

On 2/27/07, Guus Schreiber <schreiber@cs.vu.nl> wrote:
>

> Thanks for the remark. I intended indeed, as
> Antoine pointed out,  to make the
> contextualization explicit. So, I should have
> added something like the following to my proposal:
>
>    - a property skos:hasLabelRelation (domain =
> skos:Concept, range = skos:LabelRelation) which is
> an InverseFunctionalProperty (each LabelRelation
> uniquely identifies a Concept as its context).

Excellent. That definitely helps.

>
> My proposal is based on the assumption that the
> vast majority of thesauri will not have label
> relations, and therefore I wish not to have the
> burden of terms as classes on them. But I'm happy
> to be convinced my assumption is wrong.

Given the use cases and motivation cited in [2], most of the
relationships defined in the motivation seem to represent
relationships between concepts rather than between labels, so in that
case I'm inclined to agree.

The one area where I think label relationships will very frequently be
required will be multilingual relationships between labels other than
prefLabel (assuming we let prefLabel keep its singularity). There
isn't a good way to declare relationships between multiple
translations of any label-related statement, but especially altLabels,
whose object is a literal. This might unfortunately also be true of
notes as well, but probably less of less importance.

One other possible solution might be to recommend (not require) that
in the sole case of a need to maintain multilingual versions of a
concept and all of its literal properties, that concept schemes be
considered single language and provide for this purpose an
isTranslationOf relationship (or some other form of typed equivalence)
between concepts?

I'm also thinking here of my daughter, the soon-to-graduate Spanish
major, who tells me that there are concepts in Spanish that can't be
expressed in English but for which there are English equivalents that
are considered to be effective translations.

Anyway, just a thought.

--Jon

[2]
http://www.w3.org/2006/07/SWD/wiki/SkosDesign/RelationshipsBetweenLabels


--Jon

> > On 2/27/07, Guus Schreiber <schreiber@cs.vu.nl> wrote:
> >>
> >> ISSUE-26 [1]
> >> RelationshipsBetweenLabels
> >>
> >> Considering that:
> >> - representing lexical labels as classes would
> >> lead to an undesirable complication of SKOS in
> >> straightforward use cases for the application of SKOS,
> >> - representing relationships between labels is
> >> required in some use cases, and therefore an
> >> escape mechanism should preferably be available
> >> for such thesauri,
> >>
> >> I propose the WG opts for an amended version of
> >> the second solution proposed in [2]:
> >>
> >> RESOLUTION
> >>
> >> The WG resolves to add the following classes and
> >> properties to the SKOS specification [3]:
> >>
> >> - the class skos:LabelRelation
> >> - the properties skos:labelRelationSubject and
> >> skos:labelRelationObject with domain LabelRelation
> >> and range rdfs:literal
> >>
> >> In addition, the SKOS Guide should describe
> >> guidelines for SKOS users to define their label
> >> relations as specializations of LabelRelation and
> >> gives examples of its intended usage. The SKOS
> >> specification refrains for now to predefine
> >> specializations of LabelRelation.
> >>
> >> Contrary to the proposal in [2] the class
> >> LabelRelation is not defined as a subclass of
> >> skos:Annotation (which is in any case not yet part
> >> of the spec), as it is not an "annotation", but a
> >> lexical relationship.
> >>
> >>
> >> [1] http://www.w3.org/2006/07/SWD/track/issues/26
> >> [2]
> >> http://www.w3.org/2006/07/SWD/wiki/SkosDesign/RelationshipsBetweenLabels
> >> [3] http://www.w3.org/TR/swbp-skos-core-spec/
> >>
> >> --
> >> Vrije Universiteit Amsterdam, Computer Science
> >> De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
> >> T: +31 20 598 7739/7718; F: +31 84 712 1446
> >> Home page: http://www.cs.vu.nl/~guus/
> >>
> >>
> >
>
> --
> Vrije Universiteit Amsterdam, Computer Science
> De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
> T: +31 20 598 7739/7718; F: +31 84 712 1446
> Home page: http://www.cs.vu.nl/~guus/
>
Received on Tuesday, 27 February 2007 14:52:24 GMT

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