Spectra DM for theoretical spectra?
Gerard
gerard.lemson at mpe.mpg.de
Wed Jun 3 06:10:58 PDT 2009
Hi Carlos
> I think it's perfectly explained (thank you).
>
> So we are talking about provenance. All right.
>
> Thus, I will study the work that is being doing about the
> provenance data model. So far, knowing that "this is a
> question about provenance" doesn't help me to tackle the
> problem of how knowing if what is called Teff for one model
> is the same "thing" than what is called "T" fo other model.
> (and for me this problem is almost exactly the same one as
> knowing if two observed spectra correspond to the same "point" in sky)
>
PLEASE also look into the SimDB data model.
It already allows you to describe the provenance/history of
synthetic/simulation data products.
Why is that not good for you?
> The summary would be:
>
> - This is not part of the spectrumDM.
> - The provenance DM (where it seems to belong conceptually)
> does not consider these kind of information right now and it
> is difficult because, in real life, each model will use
> different parameters.
> - It is not either the purpose of SimDB going to such detail
> level (although it could be extended, but should be discussed
> if it's worth to do so)
>
> But, at the same time, we are told that the case of
> theoretical spectra is already considered in SSAP
> (+SpectrumDM + ObsDM) and that we shouldn't discuss much about it...
>
This is the old story indeed. But this is what we are now discussing,
whether that answer is still correct.
So don't give up yet!
Gerard
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