The Semantics Working Group

Documents

UCD list update

• Any member of the IVOA community can submit at any time a request for modification (RFM) of the controlled list of UCD words;
• A globally editable page is the interface between the community and the Scientific Board in charge of discussing the RFM;
• The author of a RFM should get an answer within 6 weeks;
• At regular intervals (synchronized with IVOA Interoperability meetings) the approved modifications are integrated in a new version of the IVOA UCD1+ Common Vocabulary.

• Request for Modifications to UCD List version 1.3 (June 2017 to February 2018)

IVOA Recommendations

• review of the maintenance process for UCD started . see the UCDMaintenanceRFC page.
• Proposed Recommendation http://wiki.ivoa.net/internal/IVOA/UCDList2017RFC/PR-UCDlist-1.3-20180219.pdf
• The UCD1+ controlled vocabulary, Version 1.23: IVOA Recommendation 02 April 2007
• Maintenance of the list of UCD words, Version 1.20: IVOA Recommendation 28 May 2006
• The UCD1+ controlled vocabulary, Version 1.11: IVOA Recommendation 31 December 2005
• An IVOA Standard for Unified Content Descriptors, Version 1.10 : IVOA Recommendation 19 August 2005
• Vocabularies in the Virtual Observatory, Version 1.19: IVOA Recommendation 07 October 2009

Current work

IVOA vocabularies update

here are the pages where discussion for the addition of new terms are summarised

UpdateDatalinkTerms

UpdateTheoryVocabularyTerms

UpdateVOresourceVocabularyTerms

2018- March Publishing and disseminating the IVOA defined vocabularies

VocabularyTestPage is a page proposed for a centralised page where all vocabularies defined in the VO could be published and downloaded.

This page is submitted for approval to the exec commitee, with a short charter discussed at last IVOA semantics sessions and on the semantics mailing list .

2018- February / New UCD List v 1.3

2017- Oct / Update of the UCD Maintenance Standard

An IVOA Note has been issued to stabilize the maintenance process Note Version 2.0, 6 June 2017 Note Version 2.0, 6 June 2017 in track change mode from V1.20

This Note is turned to a Working draft proposing the Maintenance Process as an IVOA standard, in coordination with Standards & Process WG.

WorkingDraft 2.0, 19 October 2017 in track change mode from V1.20

Proposed Recommendation 23 August 2018. Proposed Recommendation 2.0, 23 August 2018 in track change mode from WD 2.0 20171019

Unique identifiers and description for facilities and instruments in astronomy and planetary science (started 2014)

Unified names and identifiers for astronomical Facilities, Telescopes and Instruments: See Unified Facilities Description at UniFacil (on going work).

TelescopeInstruments Nomenclature Meetings:

• @ the Lisa conference in SXB -2017-June 3-6
• Meeting in Strasbourg @CDS - 2018-Feb-21-23 SxbNomenTIMeeting20180221-23
• Preparation for discussion at AAS meeting January 6-10 2019 - Metadata structure for Telescopes and Instruments description MetaTelInst -

Former work

Units specification in the IVOA

Vocabularies in the IVOA

• Scope of a Standard Vocabulary: StdVocabScope
• Use Cases for a Standard Vocabulary: StdVocabUseCases

Keywords

Astronomical Keywords in the era of the Virtual Observatory, IVOA Note AstroKeysTN-20070425.pdf

Ontologies

Former work in the Semantics Group (2003-2014)

UCDandSemanticsFormerWork

Mailing-lists

• ObjectTypes_1.500.owl: Object Types ontology v1.5