RE: Doubts about domains and microthesauri in Thesaurus to SKOS conversion

Hi Giancarlo,

Bernard Vatant and myself have developed the EUROVOC schema in attachment for the EU/OPOCE.
The schema and the documentation are copyright of the EU as mentioned in the owl and html file.

This schema models a thesaurus (EUROVOC) which has a top-level structure of domains/micro-thesauri further specialized in a concept hierarchy.
All micro-thesauri and the complete thesaurus are modeled as skos:ConceptScheme.
The domains that are regrouping micro-thesauri were modeled as a complementary class with dedicated properties between Domain and Micro-thesaurus.
The concepts are modeled as skos:Concept.  These concept belong to the EUROVOC thesaurus and to at least one micro-thesaurus.

The html file gives an explanation.
The owl file is owl-2. it imports the skos and skos-xl from the web.
Extension classes and properties have additional comments in the owl.

feel free to ask explanations when needed.

Hope this helps.


Kind Regards,
   Johan De Smedt
=======================
mail: johan.de-smedt@tenforce.com

> -----Original Message-----
> From: public-esw-thes-request@w3.org [mailto:public-esw-thes-
> request@w3.org] On Behalf Of Giacomo Bartoloni
> Sent: 18 February, 2010 16:11
> To: public-esw-thes@w3.org
> Cc: Enrico Francesconi
> Subject: Doubts about domains and microthesauri in Thesaurus to SKOS
> conversion
> 
> Hi everybody, I'm studying the best way (or the most beautiful and
> meaningful form) to represent a thesaurus with domains and
> microthesauri, in my case Eurovoc and few ones, in "SKOS 2009" format.
> My doubt is how to deal with domains and microthesauri, I found many
> examples (UKAT's, IVOA vocabularies and STW's) but it seems to lack a
> shared method to do it.
> In UKAT thesaurus both the thesaurus and the microthesauri are
> skos:ConceptScheme and the concepts have the property skos:inScheme
> pointing to the main scheme and to the related microthesaurus.
> According to IVOA all the domains and the microthesauri are
> skos:Concept but I think that in this way I loose the base thesaurus
> Descriptor goal and I put all domains, microthesauri and descriptors
> on the same level.
> In the STW's thesaurus, there is only one skos:ConceptScheme, the
> thesaurus itself, and the domains, the microthesauri and the
> descriptors are mapped into skos:Concept but this class is extended
> into stw:Descriptor and ztw:Thsys.
> 
> Which is the best thesaurus representation?
> 
> Thanks a lot
> 
> Giacomo Bartoloni