DDI SpecificationsRecent Developments

Wendy ThomasJoachim Wackerow

Technical CommitteeEDDI 2015 - Copenhagen

DDI Cooperation Platform

• Wiki system Confluence. It provides team collaboration functions.– https://

ddi-alliance.atlassian.net/wiki/display/DDI4/DDI+Home

• Issue tracking system Jira. It provides bug tracking, issue tracking, and project management functions.– https://ddi-alliance.atlassian.net/secure/BrowseProjects.jsp

a?selectedCategory=all&selectedProjectType=all

• Hosting service Bitbucket. It uses the Git revision control system.– https://bitbucket.org/ddi-alliance/

DDI Maintenance and Development

• Current DDI list of products– DDI-Codebook– DDI-Lifecycle– RDF Vocabularies– Controlled Vocabularies

• DDI Views– Development project– Development reviews

DDI-Lifecycle

• In the first half of 2016 we will release DDI 3.3 beta version which includes work on:– Sampling, Weighting, and Survey Development– Resolution of issues filed against DDI 3.2

• Update to DDI 3.2 high level documentation– Expanded documentation based on work for the

3.3 beta release– Uses the documentation production system

developed for the DDI Moving Forward project

DDI Views

• Anticipated release date for the second Development Review– Q2 2016

• Coverage additions– Library Packages:

• Data Description• Data Capture• Process Model

– Functional Views:• Classification• Data Capture• Data Description

Release of a DDI Codebook View

• The third Development Review should include a basic Codebook View– Include the basic classes that should be available

in any view covering content that can be managed and preserved

– Test the approach of including full classes and restricting their coverage using documentation

– This would be a preliminary view that would continue to expand to cover the content of the current DDI-Codebook

DDI Codebook ViewDetails

• Using items of– Data Description– Data Capture– Methodology (using items of Process)– Utility packages

Codebook 2.5Codebook View DraftCodebook View equivalent to

Codebook 2.5

DDI Codebook ViewCoverage

Library and Views

Codebook View

Consumption of DDI Views

DDI

Model and Generation ofXML Schema / RDF

UML Model

XML Schemaper View

RDF Vocabularyper View

Documentation

Production Framework - Details

Moving Forward Sprints

• Minneapolis, May 25-29, 2015– Substance working groups

• Dagstuhl, October 19-23, 2015 – Review by external experts

• Copenhagen, November 23-27, 2015– Production Framework

Get Involved

• Commenting draft releases• Contributing to working groups• Participating in sprints• Support from organizations by contributing:– project management, programmers time, meeting

rooms

www.ddialliance.org / secretariat@ddialliance.org