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IVOA Unified Content Descriptors

If you are interested in actively participating in the IVOA workgroup about semantics, please contact Andrea Preite Martinez.

Working papers

Latest documents

Charter for the Semantics WG (approved by EXEC on May 17 2006): The IVOA Standard Vocabulary Version 0.8 (20060505) :

An IVOA Standard for Unified Content Descriptors Version 1.10 : IVOA Recommendation 19 August 2005

The UCD1+ controlled vocabulary Version 1.11 : IVOA Recommendation 31 December 2005 Maintenance of the list of UCD words Version 1.20 : IVOA Recommendation 28 May 2006 During the RFC period for the above document, the RFC page was at:

Old documents


Name Institute
Sébastien Derrière CDS, F
Norman Gray Starlink UK
Nausicaa Delmotte ESO, D
Bob Mann ROE UK
Jonathan McDowell CfA, US
François Ochsenbein CDS, F
Pedro Osuna ESA, E
Andrea Preite Martinez
Guy Rixon Cambridge, UK
Roy Williams
Caltech, US


UCD Sessions at Interop Meetings

Where & When UCD Session Plenary & More
Victoria - Canada, May 2006 InterOpMay2006UCD plenary
Madrid - Spain, Oct 2005 InterOpOct2005UCD plenary
Kyoto - Japan, May 2005 InterOpMay2005UCD plenary
Pune - India, September 2004 no formal UCD session plenary
Cambridge, Mass. - USA, May 2004 InterOpMay2004UCD plenary
Strasbourg, October 2003 InterOpOct2003UCD ppt
Cambridge - UK, May 2003 InterOpMay2003UCD .ppt, .pdf

WG Roadmap

Date Event status
Oct-2004 UCD1+ to PR (RFC) done
May-2005 UCD-Tools done
Jun-2005 Create Sci- and Tech-Boards done
Jul-2005 UCD1+ word-list to PR(RFC) done (RFC after holidays)
Jul-2005 UCD1+: PR to Recomm done (in Aug, minor editing needed)
Oct-2005 UCD1+ word-list: PR to Recomm in progress
Oct-2005 From UCDs to Semantics proposed in Kyoto
Nov-2005 UCD1+ Words Maintenance Working Draft
Dec-2005 UCD1+ word-list: Recomm done (31Dec2005)
May-2006 UCD1+ Maintenance: Recomm done (28May2006)
End-2006 Ontologies-TN  
End-2006 Standard Vocabulary-TN  


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Topic revision: r75 - 2006-05-31 - AndreaPreiteMartinez
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