mcdittmar / dm-usecases

The is repo gathers all the material to be used in the DM workshop 2020

DM Workshop Repository

Context

• During fall 2020 Interop a wide discussion on both Measure and Coordinate models and possibly at refining their usages has been open. https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpNov2020DM

• This came after a long discussion on the mailing list, related to the necessity of keeping or not a tight dependency between Measurements and Coordinates (MC).

• It has also been suggested that product models (e.g. CubeDM ) could be replaced with domain related components.

• The major points of the audience contributions are :

  • 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 has been tackled by the WG for a couple of years along with the development of Measurements/Coordinates models.

  • 2018:Discussions have been engaged on this topic after a hands-on session in Victoria. https://wiki.ivoa.net/twiki/bin/view/IVOA/SourceCatalogs
  • 2019: Data providers and client developers were asked to present their needs in a dedicated session at Paris https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpMay2019DM

• After these 2 surveys the scope of the model usage has been exposed in Virtual May and we have been working on MANGO (model for source data with some MC adaptations ) that has been sketched in Groningen and the in virtual-May 2020. It has been presented presented in virtual-Fall 2020. https://wiki.ivoa.net/internal/IVOA/InterOpNov2020DM/Mango_interopFall2020.pdf

The workshop

• To continue this action we propose to organize 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 and data samples provided by interested people.
• This repository contains all material gathered to exercise the models and their annotations.

Repository setup

• All use cases are located un use-cases
• Each use case has the following content
  • One README describing the case
  • One raw-data directory containing non annotated VOTables which content matches the case. A README tells more about these data files
  • One sub-directory for each proposal
    • The content of the proposal sub-dirs is left to the discrepancy of the author.
    • It must however contain data and text (README) only.

Contributor Guide

• Please have a look at that guide to contribute