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    • Annual Report 2004 (PDF)
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Document Type Definition (DTD)
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Mapping to Other Metadata Standards
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Version 2.0 Change Proposal

In October a group composed of representatives from ICPSR, Yale, and NSD submitted a proposal for a change to Version 2.0. The proposal relates to how the specification handles the grouping of categories. Prior to Version 2.0, one could group categories in two different ways -- (1) recursively through a nested structure, and (2) through the use of category groups. When Version 2.0 was published, it was thought that only one method for grouping should be provided, so the nested feature was removed. The proposal submitted in October was a request for the nested structure to be reinstated. The DDI's Structural Reform Group modified the original proposal. It is this modification that is being voted on.

Original Proposal, October 7, 2004 (PDF 180K)
Modified Proposal, March 11, 2005 (PDF 120K)
Comments Log (PDF 80K)

Voting Procedures

Public Review (March 23-April 10)

During this period, anyone can send comments about the modified proposal above to: ddi-users@icpsr.umich.edu.

Voting (April 11-April 24)

After two weeks of review and comment, each DDI Alliance Expert Committee member has two weeks to vote Yes or No.

Publication (April 25, 2005)

If the proposal is accepted, a revised DDI specification is posted on the public site as the new development version or, if a development version already exists, the change is incorporated. The approved change is then incorporated into the next scheduled release of a new production version of the DDI specification.

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