Web sites and semantics.

ABSTRACTA lot of efforts done in the word of the Web aims to facilitate data representation and data mining. This is done most of the time by a syntactic formalisation of knowledge or information using languages such as XML or RDF using an hypertext structure. We claim that this is not sufficient and that we need to provide a way of specifying semantic (global) constraints over Web sites to be able to mechanically perform some verifications and proof-reading during the life time of the site, using some software engineering technics.