innovation in metadata design, implementation & best practices

Title: Decision on a proposal for new terms for
               describing collections of resources
Shepherd: Andrew Wilson
Identifier: http://dublincore.org/usage/decisions/2005/2005-03.CollectionDescription.html
Date: 2005-06-13
Description: The decisions documented here refer to proposals
               considered at the Usage Board meeting of October 2004 
               in Shanghai, China.

Text of proposals:
-- Accrual Method (element)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-accrualMethod/ 
-- Accrual Periodicity (element)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-accrualPeriodicity/ 
-- Accrual Policy (element)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-accrualPolicy/ 
-- Dublin Core Collection Description Accrual Method (encoding scheme)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-DCCDAccrualMethod/ 
-- Dublin Core Collection Description Accrual Periodicity (encoding scheme)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-DCCDAccrualPeriodicity/ 
-- Dublin Core Collection Description Accrual Policy (encoding scheme)
   http://www.ukoln.ac.uk/metadata/dcmi/collection-DCCDAccrualPolicy/ 

(Note: The text of the above proposals is archived
in the meeting packet for the Shanghai meeting, at
http://dublincore.org/usage/meetings/2004/10/Meeting-packet.pdf.)

Decision

The Usage Board approves the addition of three new terms --
"accrualMethod", "accrualPeriodicity" and "accrualPolicy" --
as conforming terms in the dcterms namespace. The Usage Board
deferred a decision on the three proposed encoding schemes
pending clarification of the maintenance responsibility for the
controlled vocabularies associated with the encoding schemes.

Discussion

The Collection Description Working Group proposed the addition
of three new elements: "accrualMethod", "accrualPeriodicity",
and "accrualPolicy"; and three new encoding schemes:
"DCCDAccrualMethod", "DCCDAccrualPeriodicity", and
"DCCDAccrualPolicy", as part of its development of an
application profile for describing collections of resources.
The DCMI Usage Board reviewed the proposal at a meeting in
Shanghai China on Sunday, 10 October 2004. Members present were
Tom Baker(chair), Diane Hillmann, Akira Miyazawa, Andy Powell,
Stuart Sutton, Rebecca Guenther, and Andrew Wilson (designated
shepherd of the Collection Description terms proposal).

Discussion of the three elements was concerned largely with
the nature of "resource discovery" and whether the proposals
actually achieved the aims of DCMI for cross-domain resource
discovery. As a result of this discussion the Usage Board will
clarify what it actually means when it refers to "resource
discovery" and "cross-domain".

The three proposed elements and the three proposed encoding
schemes were considered together because the encoding schemes
identify controlled vocabularies recommended as the source
of values for the elements.

After additions to the DCMI Type Vocabulary were approved
in 2003, the Usage Board decided not to accept further
proposals for expansion of the Type Vocabulary or for other
controlled vocabularies of values to be used with DC elements
and element refinements. The Usage Board has two main concerns
about expanding the number of controlled vocabularies managed
by DCMI:

       * The resources required to manage vocabularies at this
         level is considerable. The Usage Board is composed of
         up to nine members all volunteers with busy careers
         on the side -- who feel a sufficient enough challenge
         fulfilling the Board's primary mission;

       * Most of the suggestions or proposals for additional
         vocabularies are those that should be created and
         managed by specialist communities with sufficient
         expertise and motivation to do the job.

To a great extent, the process of developing vocabularies
is a social task, and not a technical task. As such it is
critical that the development be managed in the appropriate
domain. Usage Board members do not believe that the Usage
Board is the appropriate domain for such an activity.

The Usage Board decided to reserve its decision on the
proposed encoding schemes (and the associated controlled
vocabularies) and to seek clarification of the role of the
Usage Board in this area from the Trustees. Consequently,
references to specific encoding schemes in the element
proposals were removed.

Approved text - beginning
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VMS-ID: accrualMethod-001
Name: accrualMethod
URI: http://purl.org/dc/terms/accrualMethod
Namespace: http://purl.org/dc/terms/
Label: Accrual Method
Definition: The method by which items are added to a collection.
Comment: Recommended best practice is to use a value from a controlled
              vocabulary.
Type of term: http://dublincore.org/usage/documents/principles/#element
Status: http://dublincore.org/usage/documents/process/#conforming
Date issued: 2005-06-13
Decision: http://dublincore.org/usage/decisions/#Decision-2005-03
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Approved text - end

Approved text - beginning
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VMS-ID: accrualPeriodicity-001
Name: accrualPeriodicity
URI: http://purl.org/dc/terms/accrualPeriodicity
Namespace: http://purl.org/dc/terms/
Label: Accrual Periodicity
Definition: The frequency with which items are added to a collection.
Comment: Recommended best practice is to use a value from a 
              controlled vocabulary.
Type of term: http://dublincore.org/usage/documents/principles/#element
Status: http://dublincore.org/usage/documents/process/#conforming
Date issued: 2005-06-13
Decision: http://dublincore.org/usage/decisions/#Decision-2005-03
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Approved text - end

Approved text - beginning
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VMS-ID: accrualPolicy-001
Name: accrualPolicy
URI: http://purl.org/dc/terms/accrualPolicy
Namespace: http://purl.org/dc/terms/
Label: Accrual Policy
Definition: The policy governing the addition of items to a collection.
Comment: Recommended best practice is to use a value from a controlled
              vocabulary.
Type of term: http://dublincore.org/usage/documents/principles/#element
Status: http://dublincore.org/usage/documents/process/#conforming
Date issued: 2005-06-13
Decision: http://dublincore.org/usage/decisions/#Decision-2005-03
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Approved text - end