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DDI Process modelling "working group". Steve McEachern Dagstuhl workshop, 22 October, 2012. Summary. Origins: Impetus for the group Meetings Use cases Potential models Next steps. Origins.

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Ddi process modelling working group

DDI Process modelling "working group"

Steve McEachern

Dagstuhl workshop, 22 October, 2012


  • Origins: Impetus for the group

  • Meetings

  • Use cases

  • Potential models

  • Next steps


  • DDI qualitative working group, Nov 2011: processes for qualitative data collection and archiving (Various)

  • Follow-up with UK Data Archive and ICPSR re archival processing and provenance (SMcE)

  • GSIM development and ABS implementation (ABS)

  • National Child Study (Jay Greenfield)

  • May 2012: IASSIST discussion

    • Background paper - Arofan: http://goo.gl/Ruasf


  • June 2012: Initial teleconference

    • Meeting notes: http://goo.gl/CmNUo

  • July 2012: Canberra meeting following RC33 conference

    • Meeting notes: http://goo.gl/49Chy

Use cases
Use cases

Various stages of the DDI lifecycle, including (but not limited to):

  • Data production - questionnaire design, data collection, sampling

  • Data analysis - analysis procedures, results generation, publication process

  • Data archiving - data ingest, processing and publication

  • Potential use cases are covered in:

    • Arofan's background paper

    • Meeting notes from teleconference

Potential aims for a model
Potential aims for a model

Alistair Hamilton, ABS

  • a) Historical documentation

    • Should be readily achievable

  • b) Design time

    • Introduction for the purposes of documentation would likely be useful

    • Making this machine actionable might be more problematic

    • May be better to figure out points of exit / handshake to other standards

  • c) Run time??

Points of departure comments from canberra meeting
Points of departure - comments from Canberra meeting

  • Should we include process in DDI?

    • Need to think somewhat about this more generally for DDI.

    • Should DDI be able to “do everything”? What should be in or out of scope?

  • Suggestion therefore is to stay away from the more complex elements (particularly run time).

  • Alternative is to look at models like GSIM, and see how that might be related into existing elements of DDI - particularly lifecycle events.

Potential models
Potential models

  • Wendy - starting model for discussion

    • Document: http://goo.gl/u8FrZ


    • Documentation: http://goo.gl/JmUWZ

  • GLBPM - Marcel Hebing

    • Documentation: Original model - http://goo.gl/H4UlO; Comments re process models - http://goo.gl/6SDu6

Next steps
Next steps

From Canberra meeting:

a) Development of a bare-bones model - Wendy Thomas volunteered to outline this model, and Jay Greenfield has volunteered to compare that to his existing NCS use cases

b) Review paper on existing standards that might form a starting point for DDI (or that DDI could provide external reference to) - Herve, I'm not sure if you indicated you could work on this??

Next steps 2
Next steps (2)

c) Development of a set of detailed use cases for process metadata requirements across various DDI "user types".

- Data archives (UKDA/ICPSR/ADA) to develop a common "archive processing" use case, based on Herve's initial email

- NSIs, based around recent work on GSIM

- "Data lifecycle" usecases - eg. "data collection", "longitudinal data", "administrative data" - from those with a particular interest in these sections of the lifecycle

Next steps 3
Next steps (3)

d) Development of a working paper outlining the broad requirements of a DDI process model and relevant elements - Requirements, Possible Usecases and Potential Solutions (integrating a-c)

e) Establishment of a formal DDI working group - Steve to discuss with Mary Vardigan