FW: NEW issue 6 - defining semantic relationships

Cheers Dave.

-----Original Message-----
From: Dave Reynolds [mailto:der@hplb.hpl.hp.com]
Sent: 17 November 2003 15:52
To: Miles, AJ (Alistair) 
Subject: Re: NEW issue 6 - defining semantic relationships


This seems amenable to subProperty relationships.

You could have a base property "thesaurusRelationship", subProperties for 
broader/narrower, subProperties of those for specific usages like strict 
isa, partof etc. In that way some could use a strict partOf relation and a 
thesaurus tool that only understood BT would be able to treat it as a 
broaderTerm.

Dave

Miles, AJ (Alistair) wrote:

> I've added this issue to the RDF Thesaurus ESW Wiki.
> 
> http://esw.w3.org/topic/RdfThesaurus?action=show
> 
> Short summary:
> 
> Issue 6 - Defining semantic relationships
> 
> Description: A thesaurus consists of concepts, labels for concepts, and
> semantic relationships between concepts. A semantic relationship is a
> relationship of meaning. Most thesauri use a similar set of semantic
> relationships, which they label 'broader' 'narrower' and 'related'. 
> 
> Problem 1: 'broader/narrower' means different things in different
thesauri.
> In some thesauri it means strictly class-subsumption. In other thesauri it
> can mean either is-a, instance-of, or part-of. Also 'related' is not
> consistently used. For example some thesauri model part-of relations with
> 'related', others use 'broader/narrower' 
> 
> => We must invent some mechanism for providing clear definitions of
semantic
> relationships, and for removing any scope for ambiguity. 
> 
> Problem 2: some thesauri have semantic relations other than
> 'broader/narrower' and 'related'. Some overcome the 'broader/narrower'
> fuzziness by using 'BTI', 'BTG' and 'BTP', which stand for
> 'broader-term-instantive' 'broader-term-generic' and
> 'broader-term-partitive' respectively. In others there are custom
> relationships like 'related-broader'. 
> 
> => We must provide some mechanism by which users can extend the given
> relationship set and define their own semantic relations. 
> 
> .....
> 
> 
> Alistair Miles
> 
> CCLRC - Rutherford Appleton Laboratory
> Building R1 Room 1.60
> Fermi Avenue
> Chilton
> Didcot
> Oxfordshire OX11 0QX
> United Kingdom
> 
> Email:        a.j.miles@rl.ac.uk
> Telephone: +44 (0)1235 445440
> 
>

Received on Tuesday, 18 November 2003 08:11:04 UTC