[Voevent-core] Fwd: standard vocabulary

[Francois Ochsenbein]

Hi Roy, Rob,

In my mind, it's (hopefully) more than just flexibility -- it is
a description of the phenomenon. Assigning a name to it does not
describe it -- you could name it 054321ff instead of GRB and the 
semantic contents would be the same... The "atoms" used in 
"process.variation.burst;em.X-ray" have all a definition in the
UCD dictionary, their association therefore means something. 
Of course it would be possible to add "GRB" among the atoms, 
but then you remove the possible relationship between e.g. GRB
and X-ray burst. In other terms, the UCD is a way to describe
phenomenae, observables, parameters, etc... with a restricted set
of well-defined "words".

--Francois

>
>>
>>>>> I tried to express the idea of a GRB, and I came up with
>>>>> process.variation.burst; em.gamma
>>>>
>>>> Could Andrea or Rick (or anybody else) comment on why the latter
>>>> should be preferred over simply "GRB" as a class identifier?
>
>To me, it is the flexibility. If you know how to talk about a burst
>in the gamma, now you know how to do it in the X-ray as well:
>	process.variation.burst;em.X-ray
>
>I suppose you could also call it a "XB", but I'm sure anyone would
>understand....
>Roy
>
>
>California Institute of Technology
>626 395 3670
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Francois Ochsenbein       ------       Observatoire Astronomique de Strasbourg
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