Membership Documents
  • Bylaws
  • Charter
  • Join the DDI Alliance
  • Membership Form (PDF)
 Alliance Structure
  • Member Institutions
  • Expert Committee
  • Steering Committee
  • Committee Meeting Minutes
 Publications
  • General Brochure
  • Newsletter
  • Reports
    • Annual Report 2006 (PDF)
    • Annual Report 2005 (PDF)
    • Annual Report 2004 (PDF)
    • Strategic Plan, 2007 and Beyond (PDF)

 Papers, Presentations, and Reports
 Projects Using the DDI
 DDI Users' Listserv
 Getting Started with the DDI
 Frequently Asked Questions (FAQ)
 DDI Logo

 Document Type Definition (DTD)
 XML Schema (XSD)
 DDI Lite (Recommended Elements)
 Version Control for DTD
 Information on DTD Elements (DDI Tag Library)

 Mapping to Other Metadata Standards
  • Dublin Core
  • Recommended Fields (CESSDA) (PDF)
 Related Tools
  • Software/Tools
  • XML/XSLT

Alliance Structure

• Alliance Member Institutions
• Expert Committee
• Steering Committee
• Working Groups
• Committee Meeting Minutes

Member Institutions

• University of Alberta, Canada
• University of California, Berkeley -- Computer-Assisted Survey Methods Program and UCDATA
• University of California, California Digital Library
• Centro De Investigaciones Sociologicas (CIS), Spain
• CEPS/INSTEAD -- Luxembourg
• Cornell University (CISER)
• Danish Data Archive
• Data Archiving and Networked Services (DANS), The Netherlands
• Emory University
• Finnish Social Science Data Archive
• German Socio-Economic Panel Study (SOEP)
• GESIS-ZA (German Social Science Infrastructure Services, Central Archive for Empirical Social Research)
• GESIS-ZUMA (German Social Science Infrastructure Services, Centre for Survey Research and Methodology)
• University of Guelph
• Harvard University
• Institute for the Study of Labor (IZA)
• Inter-university Consortium for Political and Social Research (ICPSR)
• Massachusetts Institute of Technology (MIT)
• University of Minnesota, Minnesota Population Center
• National Opinion Research Center (NORC)
• Norwegian Social Science Data Service (NSD)
• Open Data Foundation
• Princeton University
• Roper Center
• Stanford University
• University of Surrey
• Swedish Social Science Data Service (SSD)
• Swiss Data Archive for the Social Sciences (SIDOS)
• United Kingdom Data Archive
• University of Wisconsin
• World Bank, Development Data Group (DECDG)
• Yale University

Expert Committee

The DDI Expert Committee is comprised of XML experts, social science researchers, and data archivists who serve as Alliance representatives from their respective institutions and organizations. The Expert Committee also has a number of working groups devoted to improving the specification's handling of special types of data.

• Iris Alfredsson, Swedish Social Science Data Service (SSD)
• Micah Altman, Harvard University
• Atle Alvheim, Norwegian Social Science Data Service (NSD)
• Nikos Askitas, Institute for the Study of Labor (IZA)
• William Block, Cornell University (CISER)
• Olivier Dupriez, World Bank, Development Data Group (DECDG)
• Michelle Edwards, University of Guelph
• Janet M. Eisenhauer, University of Wisconsin
• Alexis Furuichi (Princeton University)
• Julie Gibbs, University of Surrey
• Jan Goebel, German Socio-Economic Panel Study (SOEP)
• Arofan Gregory, AEON Consulting
• Pierre Hausman, CEPS/INSTEAD -- Luxembourg
• Pascal Heus, Open Data Foundation
• Stefan Kramer, Yale University
• Fredy Kuhn, Swiss Data Archive for the Social Sciences (SIDOS)
• Chuck Humphrey, University of Alberta
• Sanda Ionescu, Inter-university Consortium for Political and Social Research (ICPSR)
• Mari Kleemola, Finnish Social Science Data Archive
• Hans Jørgen Marker, Danish Data Archive (Chair)
• Eric Marlier, CEPS/INSTEAD -- Luxembourg
• Reiner Mauer, GESIS-ZA (German Social Science Infrastructure Services, Central Archive for Empirical Social Research)
• Mark G. Maynard, Roper Center, University of Connecticut
• Katherine McNeill, Massachusetts Institute of Technology
• Ken Miller, United Kingdom Data Archive
• Peter Ph. Mohler, GESIS-ZUMA (German Social Science Infrastructure Services, Centre for Survey Research and Methodology)
• Meinhard Moschner, GESIS-ZA (German Social Science Infrastructure Services, Central Archive for Empirical Social Research)
• Ron Nakao, Stanford University (Vice Chair)
• Rob O'Reilly, Emory University
• Tom Piazza, University of California, Berkeley -- Computer-Assisted Survey Methods Program
• Pilar Rey del Castillo, Centro De Investigaciones Sociologicas (CIS), Spain
• John Sokolowski, National Opinion Research Center (NORC)
• Jon Stiles, University of California, Berkeley -- UCDATA
• Wendy Thomas, University of Minnesota, Minnesota Population Center
• Mary Vardigan, Inter-university Consortium for Political and Social Research (ICPSR)
• Joachim Wackerow, GESIS-ZUMA (German Social Science Infrastructure Services, Centre for Survey Research and Methodology)
• Marion Wittenberg, Data Archiving and Networked Services (DANS), The Netherlands
• Wolfgang Zenk-Möltgen, GESIS-ZA (German Social Science Infrastructure Services, Central Archive for Empirical Social Research)

Steering Committee

Members of the Steering Committee include the following individuals from Alliance host institutions and associations:

• Mark Abrahamson, representing the Roper Center

• Myron Gutmann, representing the Inter-university Consortium for Political and Social Research (ICPSR)

• Hans Jorgen Marker, Danish Data Archive -- DDI Alliance Expert Committee Chair

• Ekkehard Mochmann, GESIS-ZA (German Social Science Infrastructure Services, Central Archive for Empirical Social Research), representing the International Federation of Data Organizations (IFDO)

• Ron Nakao, Stanford University -- DDI Alliance Expert Committee Vice Chair

• Kevin Schurer, United Kingdom Data Archive, representing the Council of European Social Science Data Archives (CESSDA)

• Mary Vardigan, ICPSR, DDI Alliance Director

• Melanie Wright, United Kingdom Data Archive (UKDA), representing the International Association of Social Science Information Service and Technology (IASSIST)