The purpose of the Technical Committee is to model, render, maintain, and update the DDI specifications to meet community needs and align with Alliance strategic goals. The TC receives input from substantive working groups of the Scientific Board, DDI users and developers, and other interested parties. This includes the development of conceptual models, implementation of models in various technical forms, monitoring the metadata landscape and related developments, and initiate and plan possible future directions for the standard.












Meeting Minutes for current year with links to previous years
Annual Report 2020/21 with work plan for July 2021-December 2022
Annual Report 2019
Upcoming Agenda Items
2024-04-11 - NO MEETING
2024-04-18 - Lifecycle issues; DDI-L 4.0 BETA; Codebook 2.6 work
Production Framework: Information on the production framework for each DDI product.
DDI Modeling Guidelines
The Technical Committee is in the process of defining guidelines that would address modeling issues across the range of DDI versions where possible. These reflect changes in the production process, use of multiple binding options, and the varied use of DDI content. While individual versions  are not required to follow these guidelines, variance from them should be noted and explained. Guidelines are found HERE and are available for comment.

TC Work Plan
Work Plan Page 
List major work projects, projected time frame, and priority
Current GANTT chart periods:
July 2021 - December 2022
Previous GANTT chart periods:
Q1 2020 - Q2 2021
Q2 2017 - Q1 2018
Includes GANTT chart for 2-Quarter Periods with comment section on completed periods.
Current and upcoming review activities. Click product name to link to the appropriate Comment and Review page. Open reviews are highlighted in red.
Product
Release Date
Review Dates
Comments                                 
DDI-C v.2.6
September 12, 2022 through October 31, 2022
List of issues 
In preparation for publication vote
DDI-C v. 2.5.1
2012-01-17
Published
DDI-L v. 3.3
2020-04-15
Published
Open for filing issues
XKOS (RDF)
2019-06-20
Published
Open for filling issues
DDI -CDI
"Cross Domain Integration"

April 16, 2020 through July 31, 2020
continuing
Review page
SDTL
Structured Data Transformation Language
2020-12-10
Published
Open for filing issues

Related Work Areas
Tool Administration Section - for DDI Administration Tools
See Work Plan for Scheduled Priorities
  • Implementation of DDI Roadmap as agreed to by Scientific Board
  • Publication of DDI Lifecycle 3.3
  • Oversite of "DDI Cross Domain Integration (CDI)" review
  • Release of updated DDI-L 3.2 High Level Documentation (around 3.3 release)
  • Update of 2.5 including new Dublin Core Files
  • Shifting documentation production for DDI-L and DDI-C into the COGS production framework
  • Work on overall DDI Design Rules with specialization by product - associated work page
updated 2020-01-22 
Documents by Technical Committee
DDI Roadmap 2021 update
DDI Roadmap 2019 version
DDI License and Copyright Review
Recommendation on License and Review
DDI Agency Registration
2015/16 Technical Committee Report
Identification/Annotation Usage (draft under discussion beginning 2016-06-14)
Presentation from TC to Scientific Board May 2017
DDI Roadmap from the Technical Committee (July 2017 - supported by TC)









CURRENT ACTIVITIES
DDI Lifecycle version 4.0 BETA - 
Roadmap work - tracking and discussion page
Implementation Languages Workshop
 COGS production platform  
LOD Infrastructure 
DDI-Codebook 2.6 Public Review
DDI-Codebook 2.6 and future development
DDI-Lifecycle version 3.4 4.0 - technical development
DDI Suite Overview - Mapping DDI
Best Practice production - List of of related issues
Issue Trackers Managed by TC
The Technical Committee manages a number of JIRA issue trackers related to their work:
DDI Codebook Issues (DDICODE)
DDI Lifecycle Issues (DDILIFE)
DDI Technical Committee (TC)
DDI 4 Q1 2015 Review (DMFQA) - all issues have been closed, tracker is closed
DDI 4 Q2 2016 Review (D4Q2) - Open from 8 October - 31 December 2016
The Technical Committee meets EVERY Thursday. The time of the meeting shifts with the change to Daylight Savings time in the UNITED STATES. Note that meeting times are set on CET and that during the period when the US and Europe are out of sync, Central European Time applies.
Standard Time (US and Europe): 
9:00 US Central / 16:00 CET
Join Zoom Meeting
https://zoom.us/j/596245942
                                                                
Member
Role
Email
Wendy Thomas
Chair
wlt@umn.edu
Jon Johnson 
Vice-chair
jon.johnson@ucl.ac.uk
Jeremy Iverson
Member
jeremy@colectica.com
Oliver Hopt
Member
oliver.hopt@gesis.org
Dan Smith
Member
dan@colectica.com 
Flavio Rizzolo
Member 
flavio.rizzolo@canada.ca 
Darren Bell
Member
dbell@essex.ac.uk
Christophe Dzikowski
Member
christophe.dzikowski@insee.fr
George Alter
Topic expert
Olof Olsson
Topic expert
Role of Chair:
  • Convene meetings (Post agendas, minutes, additional materials)
  • Ensure that tasks are clearly articulated and prioritized by the members
  • Manage workflow
  • Prepare yearly reports to Scientific Board
  • Prepare statements from the TC to external bodies as required (Scientific Board, Director, Executive Committee)
  • Ensure that procedures for publication and review are followed
  • Ensure that the work of the TC is transparent to the community
  • Encourage new membership
  • Scientific Board ex-officio member
  • Executive Director’s Advisory Group member
Role of Vice Chair:
  • Convene meetings when chair is unavailable
  • Assist Chair in performing the tasks of the Chair
  • Executive Director’s Advisory Group member