InterOpMay2020LightCurveAnnotation < IVOA

IVOA Web>WebPreferences>InterOpMay2020LightCurveAnnotation (2020-05-05, DaveMorris) (raw view)

---+ May 2020 IVOA Interop Meeting - Annotations of light curves using VOTable

   * When - Tuesday May 05 2020 15:00 UTC
   * Where - Zoom https://zoom.us/j/97011177855?pwd=T2F6UU5mZUEvaVg3WjlIWFM3My9BUT09

   * Speaker - IVOA.AdaNebot
   * Moderator - IVOA.DaveMorris

Live discussion document on [[https://yopad.eu/p/IVOA_Virtual2020_LightCurves#][this EtherPad]] will be edited and transferred to this wiki page after the meeting is over.  

The current version of the [[http://www.ivoa.net/documents/Notes/LightCurveTimeSeries][TimeSeries note]]

The document source in [[https://github.com/AdaNebot/TimeSeries/][GitHub]].

---++ Purpose of the Note
   * How could the proposed annotation help interoperability? 
      * it could allow to combine photometry in same / different filters / missions to help study / classify astronomical sources
      * it could allow to find information of the filter
      * it could allow to find time series in the VO

---++ Topics to discuss

   * Do we need to TAG a VOTable Document? 
      * Do applications need to know an annotation is consistent with what the Note is specifying?
      * Does it help applications to have a TAG pointing to the document? if so, how?

   * Do we want to generalise to annotating other type of time series data? 
      * What about radial velocities, or time series of positions?
      * Do we want to tackle this already in the same note or would TIMESYS suffice for now?

   * How do we annotate a table with multiple filters in the same column? 
      * ForeignKey to reference rows VS several TABLES?
      * ForeignKey or specific usage of GROUPs and double referencing?

   * How does an application know this is a timeseries? Usage of simple utypes 
      * Inherit utypes from Obscore: dataproduct_type and dataproduct_subtype?
      * If so, where do they go? Global property of VOTable, a RESOURCE or aTABLE?
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Topic revision: r3 - 2020-05-05 - DaveMorris

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