TCG Meeting (online) - April 7 2025 @ 21:00 UTC

• Attendees : Marco, Tom, Adrian, André, Gus, Baptiste, Francesca, Gilles, Grégory, Janet, Jesus, JJ, Joshua, Mark CD, Mark K, Markus, Pierre F, Renaud, Sara, Steve, Sébastien, Tamara, Tess
• Regrets : Anne

• zoom vconf link

• Marco: Start update to DocStd with Markus and appropriate group regarding errata and other known issues.
• All (for Interop planning):
  • Please send out a call for IVOA participation to your groups.
  • Add your requests for sessions and other notes to the planning page (https://wiki.ivoa.net/twiki/bin/view/IVOA/ProgramPrep2025A).

Agenda

• (standing item): documents on track
  • RFC
    • VOResource-1.2 - approved 2025-04-06
      • This is approved, buy more feedback came in during the exec approval. That is not the normal process, but we don't want to ignore the input, so proposed to have a rapid-turnaround update and release for 1.3 limited only to the late feedback.
        • Markus: One point was "why do you only allow DOIs as alt identifiers", so maybe not worth a release. A couple minor points being addressed in a PR address some other minor points. A response to other comments explaining why documentation changes are not needed should complete the updates.
        • Tom: Can we find a way to quickly release 1,2 now as voted on and approved, then quickly release a 1.2.1 in an erratum-like process?
        • Markus: Given tagging and version control capabilities we have, we could release new version instead of errata. Maybe just bake in the errata but don't bother with the minor rev.
        • JJ, Do the errata not get baked into a new copy of the doc? Why not?
        • Markus: We didn't have the infrastructure for that, but with ivoatex and github we do now.
        • Conclusion: Let's just notify exec of the new updates and ask for reapproval. Updates to DocStd to bake in errata to the doc can happen at a comfortable pace. Marco to take the lead.
    • VOEvent-2.1 - status check
    • StandardsRegExt -1.1 - status check
  • -no- EN, Errata, VEPs

• update RFC template: https://wiki.ivoa.net/twiki/bin/view/IVOA/TemplateRFC
  • usage and feedback
  • RFC Template has been updated. Please start from there with new RFCs.

• Roadmap 2024B

• June Interop planning
  • who is planning to be there in person/remotely?
    • Please notify Marco, Francesca, Tom of your attendance and whether it is in-person, especially for Sunday.
    • On the exec, we have heard that Marco/INAF will attend, ESAC will send some, China will send 2. CDS will not send anyone, and probably not much from France.
    • Please register as soon as possible. Will send a reminder pretty soon but not right away.
    • Some people will only attend a subset of sessions. Send Marco requests for specific requests for remote attendance of specific sessions.
  • web page: https://indico.ict.inaf.it/event/3121/
    • registration: https://indico.ict.inaf.it/event/3121/registrations/1444/
    • call for abstract: https://indico.ict.inaf.it/event/3121/abstracts/
      • This general call for abstracts is new based on feedback from the last meeting to make the call for participation a little more open.
      • Please send out a call for participation to your groups.
  • wiki page: https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpJune2025
  • planning page: https://wiki.ivoa.net/twiki/bin/view/IVOA/ProgramPrep2025A
    • Add planning notes, session requests, etc. here as it comes up so that we can start drafting a program.
    • Local and CSP will be combined plenary dealing with NASA missions and data challenges.
    • DM will request at least 2 sessions
    • DAL, probably 2

• Data Models organisations
  • open discussion (based on Mark CD report at the last TCG)
  • Mark- Two main options:
    • Take the approach of building block models (that are not necessarily useful on their own), what are the implications to documents, maintenance, etc.
    • Use case based models. They may overlap quite a bit.
  • Marco: This relates also to the questions about what constitutes validators and interoperable implmentations
  • Markus: Favors modular approach, and implementations are easier with PyVO
  • Mark: PyVO and Laurent's work really help with the implementations, but also relied on quite a bit of work and help.
  • Gilles: Many times I just need a small part of the model. This was the idea of MANGO
  • Adrian: Parallel with s/w dev where you want to separate out different pieces. With s/w/dev we have tools and so on to test the impacts of changes throughout the dependency chain. How do we handle that with standards?
  • Mark: Good analogy.
  • Marco: Maybe this brings up a broader discussion about RFC processes...

• Other ongoing activities / Open topics
  • Major version transitioning in Registry
  • astronet.ru publishing registry
    • Need to wait a few more months
  • TD IG chair
    • Good news pending
  • statistics on clients (agents) for TAP (and other protocols): OPS/DAL/Apps
  • GWS -> DSP name changes
    • Name change can be handled by admin at ivoadoc, but requires stopping mail servers for part of a day.
  • IVOA static website rebuilding
    • Before interop, the new website will replace the old one

• AOB
• Date for the next TCG vconf
  • proposed: -- 5-7 May 2025 @ 13:00 UTC -- consolidate topic and evaluate schedule status, after Exec vconf & plan topics for the in person TCG
    • May 5 would not be good for some.
    • Pencil in Tuesday, May 6. Mention conflicts via e-mail if needed.
  • and the subsequent *21-23 May 2025 @ 20 UTC° IF NEEDED: finalise program