[DDI-users] Public Release of DDI Lifecycle 3.3

[Jared Lyle]

Dear DDI Community,

The DDI Alliance is pleased to announce the public release of DDI Lifecycle
3.3 <https://ddialliance.org/Specification/DDI-Lifecycle/3.3/>. This
updated version of DDI Lifecycle has moved through the development and
review process and is now being published as the current version of DDI
Lifecycle.

Version 3.3 contains additional coverage for:

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

DDI Lifecycle 3.3 also introduces changes 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 reissuing of the specification itself. We continue to welcome comments
on the coverage and format of this documentation.

Changes and updates in version 3.3 reflect work on 162 issues filed on
version 3.2 which reflected specific bugs, continuity issues, and improving
alignment with other standards. A full list of changes as well as
instructions for those needing to translate instances or systems from
version 3.2 to 3.3 is available:
https://ddi-alliance.atlassian.net/wiki/spaces/DDI4/pages/805142559/DDI+3.3+Change+Log
.

Thanks to everyone who contributed to DDI Lifecycle 3.3, especially the DDI
Technical Committee, the Study Development Working Group, and the
Copenhagen Profile.


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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