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AW: [Dbpedia-discussion] Using DBpedia resources as skos:Concepts?

From: Neubert Joachim <J.Neubert@zbw.eu>
Date: Wed, 4 Nov 2009 14:59:42 +0100
Message-ID: <3A59BB6451C972429019B12996F92DAD02B18A54@frodo.zbw-nett.zbw-kiel.de>
To: "Richard Cyganiak" <richard@cyganiak.de>, <dbpedia-discussion@lists.sourceforge.net>, "SKOS" <public-esw-thes@w3.org>
Cc: "Pat Hayes" <phayes@ihmc.us>
Hi Richard,
In my eyes, it's completely ok to use skos:exactMatch or skos:closeMatch in a situation like this (I did it myself for the STW Thesaurus for Economics mapping to dbpedia).
Thesauri and classifications are not restricted to abstract concepts. Some thesauri deal explicitly with individual things, e.g. the widely used Getty "Thesaurus of Geographic Names" or "Union List of Artist Names". Other thesauri (like STW) have sections (or facets, as Leonard put it) on geografic names along with others containing "pure" concepts. SKOS, as I understand it, is intended to cover all this and to be used beyond strict class hierarchies or class/individual dichotomies.
By the way, some of the SKOS properties (especially the prefLabel/altLabel/hiddenLabel semantics) can be useful in a broad range of applications. Eg. dbpedia itself could be used as a great source for synonym candidates by mapping the resources to skos:Concept and the labels for dbpedia:redirect resources to skos:altLabel. 
Cheers, Joachim


Von: Richard Cyganiak [mailto:richard@cyganiak.de]
Gesendet: Mi 04.11.2009 01:56
An: dbpedia-discussion@lists.sourceforge.net; SKOS
Cc: Pat Hayes
Betreff: [Dbpedia-discussion] Using DBpedia resources as skos:Concepts?


I want to get some broader feedback and opinion on this question.

There is a use case where an external dataset is modelled in SKOS, and 
we want to map it to DBpedia. Something like:

     a skos:Concept;
     owl:sameAs <http://dbpedia.org/resource/Michelle_Obama>;

I've used owl:sameAs here. Now the problem is that my:433256 is a 
skos:Concept, while dbp:Michelle_Obama is a foaf:Person. I wonder 
wether that's a problem. I can't see any immediate contradiction 
arising from that, but I'm uncertain.

Another option would be to use skos:closeMatch or skos:exactMatch, but 
these are intended for use between skos:Concepts, while I'm trying to 
connect a skos:Concept to a foaf:Person.

The main question, I guess, is wether people in the DBpedia project 
would consider the assertion

     <http://dbpedia.org/resource/Michelle_Obama> a skos:Concept .

to be acceptable or erroneous, or wether SKOS folks tell me that 
skos:Concept is obviously disjoint from foaf:Person.

I know that this is a complex issue, so I'm not really looking for a 
"right" or "wrong" answer. I'm more interested in getting all the pros 
and cons and pitfalls and caveats on the table, so please, if you have 
any opinion on the issue, I want to hear it.

I'm cc'ing Pat Hayes, because he said he's interested in that kind of 

All the best and thanks for your time,

Linked Data Technologist * Linked Data Research Centre
Digital Enterprise Research Institute (DERI), NUI Galway, Ireland

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