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 Brief statement of what this is and how it is organized:

This the home page for capturing comments and reviews on a series of development draft releases for the DDI 4 Moving Forward Project. As of the Q2 2016 Development Release this is referred to as DDI-Views. Each development draft release will cover different sections of the overall model and implementations. Each release  will contain a selected set of Library Packages and Functional Views with accompanying documentation. On this page you will find a list of documents which contain useful background information on the project, modeling decisions, and organization, contact information if you have questions on the process, and links to Past, Current, and Upcoming Reviews. Each release has a separate page which provided information specific to that review and a comment submission form linked to the issue tracker for that review.

Link to current comment page

Current comment page (contains link to the review package)

The Technical Committee has reviewed the package and provided a summary report available on the current comment page. This review is based on the Design Principles agreed to by the Scientific Board in May 2016.

Instructions for submitting a comment:

Each review release has a standard comment form with fixed values for the Project name, issue type and version. There is a components list that allows you to classify the type of material you are commenting on (i.e. XML View, Model Diagram, DDI General Documentation, etc.). The Summary section has specific instructions on what to provide. This includes a TOPIC (of your choice) and identifying information so that we know the specific area and/or object you are commenting on. All of the documentation files contain line numbers that you should refer to in this space. XML Schema and RDF/OWL Vocabularies do not have line numbers listed but you can obtain these by opening the document in a text reader or similar software. Please include the name of the object in addition to line numbers if appropriate. All object names within DDI are unique. Then provide the content of your comment using the Description box and/or by attaching a file containing your comments. Please include any examples or related materials you think will assist us in understanding your comment.


Past Review
  • Release name: Q1 2015
  • Release date: 27 April 2015
  • Review period: 27 April - 15 June 2015
  • Type of release: Development Draft
  • Coverage: Agent, Collections, Complex Data Type, Conceptual, Core Process, Discovery 
  • Link to the comment page with related links to release package and comment log
  • Link to Issue Tracker
Current Review
  • Release name: Q2 2016
  • Release date: 17 October 2016
  • Review period: Through 31 December 2016
  • Type of release: Development Draft
  • Coverage in addition to previous review: Complex Process, Custom Metadata, Data Capture, Logical Data Description, Format Description, Segment Location Specifics, Workflows, Collection Pattern, Process Pattern, Methodology Pattern, and Signification Pattern,
  • Functional Views: Agent Registry, Data Dictionary, Instrument, Statistical Classification 
  • Link to the comment page with related links to release package and comment log
  • Link to Issue Tracker
Upcoming Review
  • Special: Codebook View
  • March/June 2017
Useful background documents (link to page or document)

Note that these documents reflect the date that they were written. Some details may have changed or terminology made more consistent but they provide a general coverage of the project:

Contact Information:

For questions regarding the review process please contact the Technical Committee list ddi-srg@icpsr.umich.edu or the Technical Committee Chair, Wendy Thomas wlt@umn.edu

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