Ron, Charles and I are working together to see if we can agree on a
proposal for handling schemes in RDF. Our current thoughts are:
1. There appear to be at least three kinds of schemes relevant to
metadata:
- controlled vocabularies (eg AAT, LCSH)
- formats (eg ISO 8601, AACR2)
- units (eg miles, kilometers)
The first two were mentioned in Stu's mail [1]. The third may not
be relevant to DC.
2. We'd like to support both the following scenarios:
- A scheme name is just a string, with no associated URL. You
are free to associate it (somehow) with some external standard
or authority.
- A scheme name has an associated URL, which may refer to some
external standard or authority.
3. We are hoping to be able to use XML namespaces for the second
scenario, but haven't ironed out all the wrinkles.
There are some things we still disagree on, but we're working on it :-)
[1] http://weeble.lut.ac.uk/lists/meta2/1652.html
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