I don't think Roy's email made it to this list so I'm appending the
'vocabulary' which prompted Doug's comments. I agree it makes more sense to
have the discussion here or in the semantics list so I'll add my comments
here.
Just wanted to ask what this list is to be used for. As Doug says, it looks much like UCDs. Where does the semantics come in?
(Pardon my ignorance - this is the first time I've seen any of this work.)
Cheers,
Tony.
> -----Original Message-----
> From: owner-ucd-at-eso.org [mailto:owner-ucd-at-eso.org] On Behalf
> Of Doug Tody
> Sent: 01 December 2005 06:05
> To: ucd-at-ivoa.net
> Subject: Re: VOConcepts paper (fwd)
>
> [This discussion probably should be on the ucd or semantics
> list rather than voevent, which is an application.]
>
>
> ---------- Forwarded message ----------
> Date: Wed, 30 Nov 2005 22:58:14 -0700 (MST)
> From: Doug Tody <dtody-at-nrao.edu>
> To: Roy Williams <roy-at-cacr.caltech.edu>
> Cc: IVOA List VOEvent <voevent-at-ivoa.net>
> Subject: Re: VOConcepts paper
>
> The use-case identified in Madrid, which prompted the need
> for standard object type names was searching by object type
> in SSA. We want to be able to do things like query for
> spectra where targetclass=QSO. I was expecting to see a
> simple list of names like "star", "galaxy", "PN", "QSO",
> "AGN", "GRB", etc., which is what I think users would like to
> search for, but what we have instead are more UCD-like names
> such as "process.variation.burst;em.gamma" which I guess
> indicates a GRB.
>
> I can see where it could be useful to specify more precisely
> what type of object we have as the UCD approach suggested
> permits, but it would also be useful to standardize the
> actual, simple acronyms commonly used by astronomers.
> Perhaps what we need are two lists, one for precise
> characterisation of physical object types, another defining
> the common, standard acronym associated with such object
> types. This could be done by merely defining a standard list
> of acronyms for object types, and assigning one to each of
> the object type UCDs, where appropriate. - Doug
>
>
>
> On Wed, 30 Nov 2005, Roy Williams wrote:
>
> > Please find attached a white paper from Andrea Preite-Martinez, the
> > chairman of the IVOA Semantics working group, which is a
> first attempt
> > to build a standard vocabulary for astronomical phenomena
> and for astronomical objects.
> > I would like to have a brief discussion of this at the
> VOEvent meeting
> > next week, and/or receive comments by email from those who cannot
> > attend the meeting. Rick Hessman has already worked on
> exactly this topic.
> >
> > I would like to compile a "group response feedback" on this
> paper for
> > Andrea and the Semantics WG.
> >
> > Roy Williams
> >
> > California Institute of Technology
> > 626 395 3670
> >
> >
>