[OAI-implementers] Sets and multiple formats
Naomi at cs.cornell.edu
Thu Mar 9 16:25:25 EST 2006
Given that you must specify the metadata format for all harvesting, included
selective harvesting, it makes sense to have your sets group items without
regard to format.
When a harvester makes a request:
However, since you use "annotations" as your example second format, the
question may be whether your "annotations_for_oai_dc" is truly another
metadata format (a different view of the same item, to use OAI-PMH parlance),
or whether it's different content.
Also, records can belong to multiple sets:
> -----Original Message-----
> From: oai-implementers-bounces at openarchives.org
> [mailto:oai-implementers-bounces at openarchives.org] On Behalf
> Of John Weatherley
> Sent: Thursday, March 09, 2006 4:14 PM
> To: oai-implementers at openarchives.org
> Subject: [OAI-implementers] Sets and multiple formats
> We are reconsidering the way we define sets and the following
> has come up: Does it make sense to define a set that includes records
> from two fundamentally different metadata formats or is it better to
> stick to one format per set?
> For example, suppose a repository contains the following metadata
> Is it better to have a single set that includes records from both of
> the above, such as:
> or better to split the sets by format:
> Or is either approach equally OK?
> I'm curious what others have done in this regard and whether
> there are
> any conventions that have taken shape?
> The OAI protocol defines sets in the following way:
> "The actual meaning of a set or of the arrangement of sets in
> a repository is not defined in the protocol. It is expected
> that individual communities may formulate well-defined set
> configurations with perhaps a controlled vocabulary for
> setNames and setSpec , and may even develop mechanisms for
> exposing these to harvesters. For example, a group of
> cooperating e-print archives in a specific discipline may
> agree on sets that arrange metadata in their repositories
> based on a controlled subject classification."
> I do not see any discussion in the documentation about the
> singularity or multiplicity of metadata formats in respect to sets.
> John Weatherley
> DLESE Program Center
> University Corporation for Atmospheric Research (UCAR)
> PO Box 3000
> Boulder, CO 80307-3000
> jweather at ucar.edu (e-mail)
> (303) 497-2680 (tel)
> (303) 497-8336 (fax)
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