According to footnote 8 of http://wiki.creativecommons.org/images/d/d6/Ccrel-1.0.pdf :
8 ... CC initially used the http://web.resource.org/cc/ namespace, migrating to http://creativecommons.org/ns# for superior human interaction with the vocabulary when it became apparent RDFa would facilitate this. In 2004 the Dublin Core Metadata Initiative approved a "license" refinement of its "rights" term (see http://dublincore.org/usage/decisions/2004/2004-01.Rights-terms.shtml). Had http: //purl.org/dc/terms/license existed in 2002, CC would not have defined http://web.resource.org/cc/license. Thanks to the extensibility properties of RDF, http://creativecommons.org/ns#license describes its relationship to each of these other properties. -- Sincerely yours / Med venlig hilsen, Søren Roug <[email protected]<mailto:[email protected]>> European Environment Agency, Kongens Nytorv 6, DK-1050 Copenhagen K Tel: +45 2368 3660 Jabber: [email protected]<mailto:[email protected]> This email was delivered using 100% recycled electrons. Please try to keep it that way. From: [email protected] [mailto:[email protected]] On Behalf Of Bernard Vatant Sent: 21 December 2010 10:26 To: Linking Open Data Cc: [email protected]; [email protected] Subject: Concurrent namespaces for Creative Commons ontology Hi folks It seems that there are two concurrent publications and namespaces for the Creative Commons Rights Expression Language. http://creativecommons.org/schema.rdf uses http://creativecommons.org/ns#<http://creativecommons.org/ns> http://web.resource.org/cc/schema.rdf uses http://web.resource.org/cc/ The first one looks at first sight more reliable since it is maintained by Creative Commons folks themselves It is apparently the namespace underlying CC tag on CKAN packages http://ckan.net/tag/format-cc Datasets under this tag indeed use it, such as Eurostat or Geospecies (and BTW it would be great if CKAN tags pages could explicit the vocabulary namespace underlying the tag, if any) OTOH I found the second one to be used by a bunch of more or less famous ontologies such as: BIO http://purl.org/vocab/bio/0.1 Music Ontology http://purl.org/ontology/mo/ FRBR http://purl.org/vocab/frbr/core Review Ontology http://purl.org/stuff/rev Talis Address Schema http://schemas.talis.com/2005/address/schema VANN http://purl.org/vocab/vann So I wonder ... I cc people behind both vocabularies, maybe they can do something about it? Best Bernard -- Bernard Vatant Senior Consultant Vocabulary & Data Engineering Tel: +33 (0) 971 488 459 Mail: [email protected]<mailto:[email protected]> ---------------------------------------------------- Mondeca 3, cité Nollez 75018 Paris France Web: http://www.mondeca.com Blog: http://mondeca.wordpress.com ----------------------------------------------------
