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Re: AAT and SKOS

From: Mark van Assem <mark@few.vu.nl>
Date: Fri, 12 May 2006 16:09:32 +0300
Message-ID: <4464890C.5080509@few.vu.nl>
To: Paul Hermans <paul.hermans@amplexor.com>
CC: public-esw-thes@w3.org, MultimediaN e-Culture <mn-n9c-list@few.vu.nl>

Hi Paul,

The MultimediaN e-culture project that I work in has an RDF version of 
both the AAT as well as the AAT-NED (dutch version). We also have 
versions of ULAN and TGN. The schemas can be found at [1].

It is an initial non-SKOS conversion and I am planning to refine in the 
future. We introduce a separate class HierarchyName for it. However, it
seems that the names are only labels for the top concepts that are 
direct children of facets, see [2] "Facets and Hierarchies in the AAT".

So I think it would be fair to treat them as either Facets or Concepts 
(the exact difference between the two has always escaped me). In the 
SKOS case I think I'd go for concepts with the HierarchyName as its 
skos:prefLabel.

For those interested, have a look at our on-line art search demo [3] 
which utilizes the three Getty thesauri as well as WordNet's in RDF (see 
the latest version at [4]).

Cheers,
Mark.


[1]http://e-culture.multimedian.nl/resources/
[2]http://www.getty.edu/research/conducting_research/vocabularies/aat/about.html
[3]http://e-culture.multimedian.nl/demo/search
[4]http://www.w3.org/2001/sw/BestPractices/WNET/wn-conversion.html

Paul Hermans wrote:
> Dear all,
> 
> I'm trying to map the AAT thesaurus to SKOS.
> 
> In AAT I do find 4 types of records:
> C  Concept: This is the VCS default value when you create a new record. Most terms in the AAT are called "concepts," including all terms that can be used for indexing, that is all terms that are not guide terms, "hierarchy" names, or facets. If the record you are creating is NOT concept, change the Record Type to an appropriate value.
> H  Hierarchy name: Refers to the top of a hierarchy. The hierarchy name is not used for indexing or cataloging.
> G - Guide Term: A Guide Term (also called a node label) is a level used to organize the hierarchy into logical segments. In AAT, Guide Terms are used only with historical hierarchies and candidate hierarchies. Consult with your supervisor before using this designation.
> F  Facet: A facet is a broad division of the hierarchy, generally appearing directly under the Root
> 
> C - Concept maps cleanly to SKOS concept
> G - Guide term, maps to SKOS collection
> F - Facet can be defined as a subclass of concept.
> 
> But I'm not sure what to do with the record of type "Hierarchy name".
> Do I map this also onto a collection, but how to distinguish it then from guide term collections?
> 
> BTW. If someone happens to have AAT already in SKOS format, I surely would be interested in having a look at it.
> 
> 
> Regards,
> 
> Paul
> 

-- 
  Mark F.J. van Assem - Vrije Universiteit Amsterdam
        markREMOVE@cs.vu.nl - http://www.cs.vu.nl/~mark
Received on Friday, 12 May 2006 13:08:38 GMT

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