Files containing "skos:Concept" or "Concept" type "rdf:Description" are processed by this service.
This service allows the replacement of the identifiers (URI) of a SKOS/RDF-XML file by ARK identifiers built according to the recommendations of the California Digital Library (CDL).
An ARK identifier has the following syntax:
The transformation is performed in two stages:
1- Replacing the resource URI (at the level of the concept scheme) by the following generic URI: http://mon_site.fr/ark:/NAAN/ABC. The old URI is kept in a "dc:identifier" field.
At the concept level, an 8-character alphanumeric sequence followed by a dash and then a "check sum" completes this prefix and constitutes a unique ARK identifier for each concept of the resource.
Prefix | Unique identifier |
---|---|
http://mon_site.fr/ark:/NAAN/ABC | -CGT6ZZBQ-F |
2- The URI are recalculated for:
To have ARK identifiers that comply with CDL recommendations (see details here), the generic URI must be replaced as follows:
Note that in the absence of NAAN, the URI can not be considered an ARK identifier but can nevertheless be used without the ark:/NAAN/ part, the last part being a unique identifier.