Advantages of SKOS for providing semantic stability to to the information resources: an example of use in a collaborative institutional web portal

SKOS has emerged as the W3C initiative to provide semantic stability to the Web. Although this proposal is still in development, many thesaurus management or document indexing applications already use this model. We present a proposal of use of SKOS into a collaborative information system dedicated to the Cultural management in order to improve the description level of the documents of the portal and the information retrieval effectiveness