 |
 |
I think this will get even more fuzzy in the future. There is an effort to get metadata scheme maintainers to provide URIs for metadata elements for the purpose of interoperability (some DC folks are involved in this). That can mean elements or values on a controlled list or the name of the list itself. I recently prepared a statement about what the Library of Congress might do for the standards we maintain, and if and when it gets done, there would be a URI for LCSH, since it is a value on one of our source lists. That URI would be maintained at LC, since the encoding scheme itself is maintained here, and thus would be different from that registered in DCMI terms. This is an issue that will need to be explored. Rebecca ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ Rebecca S. Guenther ^^ ^^ Senior Networking and Standards Specialist ^^ ^^ Network Development and MARC Standards Office ^^ ^^ 1st and Independence Ave. SE ^^ ^^ Library of Congress ^^ ^^ Washington, DC 20540-4402 ^^ ^^ (202) 707-5092 (voice) (202) 707-0115 (FAX) ^^ ^^ [log in to unmask] ^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > Date: Mon, 2 Jun 2003 21:31:49 +0100 > From: Pete Johnston <[log in to unmask]> > Subject: Encoding scheme URIs > > I'm trying to get clear in my mind what URIs like > http://purl.org/dc/terms/LCSH (i.e. the URIs DCMI assigns to "encoding > schemes") denote. > > I think I'd always worked on the basis that, even though they are > assigned by DCMI, these URIs denoted the actual classification > schemes/systems i.e. the class of "subjects" which make up the Library > of Congress Subject Headings, the Dewey Decimal Classification system > and so on. A resource of type http://purl.org/dc/terms/LCSH _is_ a LCSH > term, and the class of all such terms _is_ the LCSH "system". > > So on that basis it would be fine to say something like > > @prefix dc: <http://purl.org/dc/elements/1.1/> . > @prefix dcterms: <http://purl.org/dc/terms/> . > @prefix ex: <http://example.org/> . > dcterms:LCSH dc:creator ex:LoC . > > (if http://example.org/LoC denotes the Library of Congress as an > organisation) > > But it would be inaccurate to say something like > > @prefix dc: <http://purl.org/dc/elements/1.1/> . > @prefix dcterms: <http://purl.org/dc/terms/> . > @prefix ex: <http://example.org/> . > dcterms:LCSH dc:creator ex:DCMI . > > (if http://example.org/DCMI denotes the DCMI) > > because although DCMI has assigned the URI, they didn't create the > classification system/vocabulary. > > But I notice that the recent DCMI schemas say things like > > dcterms:LCSH dcterms:issued "2000-07-11" . > > These statements don't seem to fit with the view above, because LCSH was > around before 2000. So I'm a bit unsure now what > http://purl.org/dc/terms/LCSH really does identify! > > Pete > >