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

From: Miles, AJ \(Alistair\) <A.J.Miles@rl.ac.uk>
Date: Mon, 19 Mar 2007 17:42:13 -0000
Message-ID: <677CE4DD24B12C4B9FA138534E29FB1D0285A20B@exchange11.fed.cclrc.ac.uk>
To: "Guus Schreiber" <schreiber@cs.vu.nl>, "SWD WG" <public-swd-wg@w3.org>
Cc: <public-esw-thes@w3.org>

I would like to offer an alternative proposal. This proposal is similar
to Guus' original proposal [1] with the modification given in [2].
However, it it slightly more flexible, making less commitment than
[1]+[2].

 - Vocabulary

skos:Annotation skos:annotation skos:annotatesLiteral

 - Axiomatic Triples

skos:annotation rdfs:range skos:Annotation.
skos:annotatesLiteral rdfs:domain skos:Annotation.
skos:annotatesLiteral rdfs:range rdfs:Literal.

 - Additional Semantic Conditions:

None.

 - Consistent Examples:

--- Begin Turtle ---

@prefix ex: <http://www.example.com/example#>.
# skos: rdfs: rdf: conventional namespace prefixes

# first extend proposed vocabulary

ex:AbbreviationRelation rdfs:subClassOf skos:Annotation.

ex:abbreviatedForm rdfs:subPropertyOf skos:annotatesLiteral;
  rdfs:domain ex:AbbreviationRelation.

ex:fullForm rdfs:subPropertyOf skos:annotatesLiteral;
  rdfs:domain ex:AbbreviationRelation.

# now apply extended vocab

ex:A a skos:Concept;
  skos:prefLabel "Corporation"@en;
  skos:altLabel "Corp."@en;
  skos:annotation [
    a ex:AbbreviationRelation;
    ex:abbreviatedForm "Corp."@en;
    ex:fullForm "Corporation"@en;
  ].

--- End Turtle ---

 - Inconsistent Examples: 

None possible.

 - Entailment Rules

None.

 - Justification

This proposal provides a general, extendable, framework for asserting
n-ary relationsips between zero or more literals and zero or more
concepts. The commitment is minimal, whilst still retaining consistent
expectations with respect to the domains and ranges of properties
involved.

Cheers,

Alistair. 


[1] http://lists.w3.org/Archives/Public/public-swd-wg/2007Feb/0181
[2] http://lists.w3.org/Archives/Public/public-swd-wg/2007Feb/0195.html

--
Alistair Miles
Research Associate
CCLRC - Rutherford Appleton Laboratory
Building R1 Room 1.60
Fermi Avenue
Chilton
Didcot
Oxfordshire OX11 0QX
United Kingdom
Web: http://purl.org/net/aliman
Email: a.j.miles@rl.ac.uk
Tel: +44 (0)1235 445440  

> -----Original Message-----
> From: public-swd-wg-request@w3.org 
> [mailto:public-swd-wg-request@w3.org] On Behalf Of Guus Schreiber
> Sent: 27 February 2007 11:43
> To: SWD WG
> Subject: [SKOS] Proposed Resolution for ISSUE 26: 
> RelationshipBetweenLabels
> 
> 
> 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/RelationshipsBet
> weenLabels
> [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/
> 
> 
Received on Monday, 19 March 2007 17:43:07 GMT

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