[DDI-users] DDI Lifecycle 3.3 specification available for final public review and comment

[Jared Lyle]

In the summer of 2018, DDI Lifecycle version 3.3 was made available for
public review. Several important issues were identified as a result of that
review. Those issues were thoroughly reviewed and addressed, and are now
ready for final review at:

https://ddi-alliance.atlassian.net/wiki/spaces/DDI4/pages/794951754/DDI+Lifecycle+3.3+-+Final+Review

This page includes a link to the package containing the schemas and field
level documentation. In addition, there are links to related content: Model
documentation, High Level documentation, Implementation Guide, Examples,
and a complete 3.2 to 3.3 change log with notes on requirements for
transforming from version 3.2 to 3.3.

A brief review period for this revised DDI Lifecycle version 3.3 will take
place Friday, January 25 through Friday, February 21, after which the
Alliance will vote on the new specification.

Version 3.3 contains additional new coverage for the following:

   - Classification management (based on GSIM/Neuchatel)
   - Non-survey data collection (Measurements)
   - Sampling
   - Weighting
   - Questionnaire Design
   - Support for DDI as a Property Graph (properties on items and
   references)
   - Quality Statement improvements (useful for Eurostat reporting)

DDI Lifecycle version 3.3 also includes improvements in the types and
organization of documentation for the specification. These changes allow
for the publication of updates and additions as they occur rather than
requiring the reissue of the specification itself. We welcome comments on
the coverage and format of this documentation.

Jared Lyle
Executive Director, DDI Alliance <https://ddialliance.org/>
ICPSR <https://www.icpsr.umich.edu/>, University of Michigan
lyle at umich.edu

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