In connection with the revision of the DCMI Abstract Model,
Andy Powell has developed "Domains and Ranges for DCMI
Properties" -- a proposal for a vocabulary of classes and
their use as the domains and ranges of metadata elements
maintained by DCMI [1].
Domains and ranges specify -- in a form usable for inferencing
-- what kind of described resources and value resources
are associated with a given property. The assignment of
formal domains and ranges makes the meanings implicit in
natural-language definitions available for machine processing.
So as not to affect the conformance of legacy implementations
of Simple Dublin Core in RDF (as explained in [2]), DCMI
proposes to replicate the fifteen elements of the Dublin
Core Metadata Element Set -- currently identified using
the namespace http://purl.org/dc/elements/1.1/ -- in the
namespace http://purl.org/dc/terms/. Terms in the former
namespace are to remain unspecified as to domain and range;
terms in the latter are to be assigned domains and ranges as
outlined in the proposal.
This proposal has been posted for Public Comment from 5
February to 5 March 2007. Interested members of the public
are invited to post comments to the DC-ARCHITECTURE mailing
list [3], including "[Domains and Ranges Public Comment]" in
the subject line. After Public Comment, the proposal will
be submitted to the DCMI Usage Board for a further review
and decision.
[1] http://dublincore.org/documents/2007/02/05/domain-range/
[2] http://dublincore.org/documents/2006/05/29/dc-rdf-notes/
[3] http://www.jiscmail.ac.uk/lists/dc-architecture.html
--
Dr. Thomas Baker <[log in to unmask]>
Director, Specifications and Documentation
Dublin Core Metadata Initiative
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