--- On Tue, 2/24/09, Joe Hourcle <[log in to unmask]> wrote:
>
> The problem really comes with time series data, where
> it's just time plotted against _anything_. There's
> a few controlled vocabularies, such as IVOA's UCD
> (Unified Content Descriptors):
>
> http://cdsweb.u-strasbg.fr/UCD/ucd1p-words.txt (the list)
> http://www.ivoa.net/Documents/latest/UCD.html
> (documentation)
>
Just to note that the IVOA [1] have recently proposed SKOS as a language for describing controlled vocabularies [2]; as a proof-of-concept there's a SKOS mapping/version of UCD's [3].
[1] http://www.ivoa.net/
[2] http://www.ivoa.net/Documents/latest/Vocabularies.html
[3] http://www.ivoa.net/Documents/PR/Semantics/Vocabularies-20081104.html#vocab-ucd1
Doug
