This classification is intended for organising knowledge organisation system (KOS) assets published by the Publications Office of the European Union ranging from controlled lists, terminologies, thesauri, models, markup schemas, ontologies and authoritative assets and other kinds of resources. The assets types are classified by their main function, being classification, sematic or data modelling, handling authoritative data, e.g.The Asset classification authority table is maintained by the Publications Office of the EU on the EU Vocabularies website.