Agenda for DC&P session at Interop
    Brian Thomas 
    bthomas at noao.edu
       
    Fri May 18 08:49:12 PDT 2012
    
    
  
On Friday, May 18, 2012 11:01:00 AM Frederic V. Hessman wrote:
> The SKOS examples that the semantic group has considered has everything you want except antonyms.  Not obivous how useful antonyms will be for the IVOA:  what's the antonym of a galaxy or spectrum?  Well, radio-quiet QSO's are, in some sense, antonyms of radio-loud QSO's, but that's the only example I can think of off-hand and the oppositeness is pretty superficial.
The antonym may be used to further distinguish terms which otherwise might look similar (particularly
if you have underdescribed your topology/ontology, which is usually the case in an auto-generated
scenario). 
That said, I agree they are not as useful to have as synonyms or hypernyms, and are much rarer
to find in a dictionary (as you say, many terms dont have clear antonyms).
Cheers,
=-brian
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