During Fall 2020 Interop we had a session, requested by Markus Demleitner, that aimed at opening a wide discussion on both Measure and Coordinate models and possibly at refining their usages.

This came after a long discussion on the mailing list, related to the necessity of keeping or not a tight dependancy between Measurements and Coordinates. It has also been suggested that product models (e.g. CubeDM ) could be replaced with domain related components.

Many people have participated to the discussion with many positive contributions.
Although the goal of this message is not to report on that meeting, we do need to note a few points:

  • There is a clear demand for using models
  • There is a clear demand for the models to be simple and modular.
  • The distinction between what is modelling and what is serialisation is unclear.
The need for a concrete solution for annotating catalog data, that resurfaced last week, has been tackled by the WG for a couple of years along with the development of Meas/Coordinates models.
  • 2018:Discussions have been engaged on this topic after a hands-on session in Victoria.
  • 2019: We asked data providers and client developers to present their needs in a dedicated session at Paris
After these 2 surveys the scope of the model usage has been exposed in Virtual May 2020 and we have been working on MANGO (model for source data with some MC adaptations ) that has been sketched in Groningen and in virtual-May and then presented in November 2020.

To continue this action we have been organising a virtual workshop (initially proposed by Tom to the TCG) with the hope of getting a widely accepted framework.

The idea is not to start afresh but to give to the participants the opportunity of matching their needs with the current proposals.

To get a clear picture of what has to be done, we propose to work with a variety concrete use cases, mostly taken out of the SourceDM proposal ( 2016) and data samples provided by interested people.


  • 2021 February 18: Public release of the use-case repository.
  • 2021 February 24: Running meeting to present the process
  • 2021 March: People can look and contribute at the repository
  • 2021 April: Virtual Workshop.

Running meeting(2x/02/2021)

  • Etherpad link
  • Zoom link
The purpose of this meeting is to prepar the workshop:

  • Presentation of the goals
  • Presentation of the use-case repository
  • Discussion on the best way to run it
  • Agreement on a date
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Topic revision: r1 - 2021-02-19 - LaurentMichel
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