<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Dear DMers,</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">During last Interop we had a session, requested by Markus, that aimed at opening </div><div class="">a wide discussion on both Measurements and Coordinate models and possibly at </div><div class="">refining their usages.</div><div class=""><br class=""></div><div class=""> <a href="https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpNov2020DM" class="">https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpNov2020DM</a></div><div class=""><br class=""></div><div class="">This came after a long discussion on the mailing list, related to the necessity of keeping </div><div class="">or not a tight dependancy between Measurements and Coordinates. </div><div class="">It has also been suggested that product models (e.g. CubeDM ) could be replaced with </div><div class="">domain related components.</div><div class=""><br class=""></div><div class="">Many people have participated to the discussion with many positive contributions. </div><div class="">Although the goal of this message is not to report on that meeting, we do need to note </div><div class="">a few points:</div><div class="">- There is a clear demand for using models</div><div class="">- There is a clear demand for the models to be simple and modular.</div><div class="">- The distinction between what is modelling and what is serialisation is unclear.</div><div class=""><br class=""></div><div class="">The need for a concrete solution for annotating catalog data, that resurfaced last week, </div><div class="">has been tackled by the WG for a couple of years along with the development of </div><div class="">Measurements/Coordinates models.</div><div class="">- 2018: Discussions have been engaged on this topic after a hands-on session in Victoria. </div><div class=""> <a href="https://wiki.ivoa.net/twiki/bin/view/IVOA/SourceCatalogs" class="">https://wiki.ivoa.net/twiki/bin/view/IVOA/SourceCatalogs</a></div><div class="">- 2019: We asked data providers and client developers to present their needs in a dedicated </div><div class=""> session at Paris</div><div class=""> <a href="https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpMay2019DM" class="">https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpMay2019DM</a></div><div class=""><br class=""></div><div class="">After these 2 surveys the scope of the model usage has been exposed in Virtual May and </div><div class="">we have been working on MANGO (model for source data with some MC adaptations ) </div><div class="">that has been sketched in both Groningen and virtual-May and then presented last week.</div><div class=""><br class=""></div><div class=""> <a href="https://wiki.ivoa.net/internal/IVOA/InterOpNov2020DM/Mango_interopFall2020.pdf" class="">https://wiki.ivoa.net/internal/IVOA/InterOpNov2020DM/Mango_interopFall2020.pdf</a></div><div class=""><br class=""></div><div class="">To continue this action we propose to organise a virtual workshop (initial proposal by Tom </div><div class="">to the TCG) with the hope of getting a widely accepted framework.</div><div class=""><br class=""></div><div class="">The idea is not to start afresh but to give to the participants the opportunity of matching </div><div class="">their needs with the current proposals.</div><div class="">To get a clear picture of what has to be done, we propose to work with a variety concrete </div><div class="">use cases and data samples provided by interested people. </div><div class="">We will then take a bit of time to exercice different options on this material before organising </div><div class="">the meeting where everyone will be able to present their own conclusion.</div><div class=""><br class=""></div><div class="">Details of this action will be released soon, unless someone has a clear veto.</div><div class=""><br class=""></div><div class="">Regards</div><div class=""><br class=""></div><div class="">Laurent - Jesus</div><div class=""><br class=""></div><div class="">PS You will be able to follow the topic on #data-models@Slack</div><div class=""><br class=""></div><div class="">
<div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div>—</div><div>Translate with <a href="https://www.deepl.com/translator" class="">https://www.deepl.com/translator</a></div><div class="">-- <br class="">jesuischarlie/Tunis/Paris/Bruxelles/Berlin<br class=""><br class="">Laurent Michel<br class="">SSC XMM-Newton<br class="">Tél : +33 (0)3 68 85 24 37<br class="">Fax : +33 (0)3 )3 68 85 24 32<br class="">Université de Strasbourg <<a href="http://www.unistra.fr" class="">http://www.unistra.fr</a>><br class="">Observatoire Astronomique<br class="">11 Rue de l'Université<br class="">F - 67200 Strasbourg</div></div>
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