DDI Lifecycle 3.3 Public Review

The purpose of the public review is to obtain feedback and evaluation of changes made to DDI Lifecycle 3.2 for the purpose of improving the detail of coverage, supporting content required by current users, and improving the flexibility of the structure of schemas. DDI 3.3 also is being used to provide an implementation test of the COGS production system for generating documentation from the schema contents plus content provided in RST format. This approach allows for more automated updates as well as providing source materials which may be used for training and publication. The public review will last a minimum of 6 weeks through 3 August 2018. Review comments are entered on the Jira issue tracker for DDI Lifecycle and will be addressed as they are received by the Technical Committee. A change log will be maintained and development work will be accessible as it is completed. Instructions for access to this work will be posted on this page once this work has begun. 

Important areas for review:

New Content

• 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)

Feedback Wanted

• New dynamic text should be tested, with feedback on if it is an improvement, should be reverted, or should be updated in some way.
• Documentation content and layout
• Statistical Classification (Copenhagen Mapping) - Does this adequately reflect this section of the GSIM model? Does it relate well to XKOS structure?
• Serialization of objects (see Implementation Guide - Best Practices for Usage of DDI 3.2 and Future Versions: Increasing Interoperability and Ease of Adoption)