[CODATA-international] New DDI 3.3 specification available for public review and comment

Jared Lyle lyle at umich.edu
Mon Jun 25 21:47:41 EDT 2018

The DDI Alliance (http://www.ddialliance.org/) is pleased to announce the
Public Review of DDI 3.3. This version of the DDI specification includes
important updates and new content, including:

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

Additionally, DDI 3.3 has a formal model now, so a detailed changelog can
be generated between DDI 3.2 and 3.3.

Links to the specification and instructions for comment are found at:


We are eager to obtain feedback from the DDI and RDF communities on this
vocabulary. The comment period is open for six weeks until August 3, 2018,
and we hope to hear from you!

Jared Lyle
Director, DDI Alliance
ICPSR, University of Michigan
+1 734-763-6075
lyle at umich.edu
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