IAU thesaurus in RDF (an update)

[Douglas Burke]

On 10/5/07 Frederic V. Hessman wrote:
> 
> > B)
> >
> > A couple of terms have spaces in them which should probably be 
> converted to "_" 
> 
> Got those too.   In the meanwhile, I've found various capitalization 
> errors and stuck in some missing stuff for galaxy rotation curves 
> (e.g. "Navarro-Frenk-White_profiles" anybody?).
> 
> Thanks for the corrections.   Please keep them coming so that we can 
> get this finished as a reasonable and reasonably complete (for our 
> intial purposes only, of course) suggestion.
> 
> Douglas implicitly raises a good point: the text file isn't much 
> simpler than n3 and n3 is a lot less verbose than SKOS/OWL - should 
> the IVOA suggest vocabularies are published in n3?
> 
> Rick

Rick,

I do much prefer to look at RDF/N3 rather than RDF/XML...

I have a question about the format of the identifiers used.

If you look at the N3 form that cwm generates
  - e.g. http://hea-www.harvard.edu/~dburke/playground/iau-djb.n3 - then 
most terms are fine, in that they are represented as IAU:foo, but we do find

<http://www.Astro.physik.Uni-Goettingen.DE/~hessman/rdf/IAU#He+_ionization_zone>

which I guess comes about because of the "+" character. In itself it's 
just ugly, and not a real issue, but I've come across cases where 
certain parsers [*] didn't like the fragments to contain the "." 
character, or start with a number, so I wonder if we should take care in 
how we create the fragments, even if my reading of 
http://gbiv.com/protocols/uri/rfc/rfc3986.html#collected-abnf is that we 
can use these characters.

[* whatever parser it is that longwell, 
http://simile.mit.edu/wiki/Longwell, uses]

Doug