UCD List 1.3 Proposed Recommendation: Request for Comments

Public discussion page for the UCD List specification version 1.3 Proposed Recommendation

The UCD Standard has defined a vocabulary for classifying physical quantities and labeling dataset descriptions as well as dataset content and has offered a reference list for the values of these semantic labels at http://www.ivoa.net/documents/cover/UCDlist-20070402.html.

It has been revised to include new terms, for statistical quantities, for measurements required by the planetary science and solar physics community, for finer description of metadata.

All new terms have been discussed and checked in their context of use and added to this specification.

New parts of this proposed recommendation compared to the previous version of the UCD List are marked in yellow in this current PR document for easy reading.

The latest version of UCDList is now version 1.3 and can be found on the document repository at http://www.ivoa.net/documents/UCD1+/20170831/index.html

The colored version provided here is easier to spot the added terms and changes .

All changes are in the colored text ( green text, yellow highlighted terms) .

Reference Interoperable Implementations

UCDs are used everywhere in the VO ecosystem, in catalog tables, metadata description, service parameters, etc.

In the VOTable specification, FIELD and PARAM elements have a 'ucd' attribute that should take values into the recommended list of terms provided in this specification.

TAP Schemata also define UCD to qualify their columns.

Implementations Validators

The CDS UCD builder allows to find an appropriate UCD term from a free text description.

It has been revised to support the new terms of the vocabulary.

Check the new version at : http://cds.u-strasbg.fr/UCD/cgi-bin/descr2ucd

Table of Contents

Comments from the IVOA Community during
RFC/TCG review period: 2017-09-06 to 2017-10-06

The comments from the TCG members during the RFC/TCG review should be included in the next section.

In order to add a comment to the document, please edit this page and add your comment to the list below in the format used for the example (include your Wiki Name so that authors can contact you for further information). When the author(s) of the document have considered the comment, they will provide a response after the comment.

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Comments from TCG member during the RFC/TCG Review Period:
2017-09-06 to 2017-10-06

WG chairs or vice chairs must read the Document, provide comments if any (including on topics not directly linked to the Group matters) or indicate that they have no comment.

IG chairs or vice chairs are also encouraged to do the same, althought their inputs are not compulsory.

TCG Chair & Vice Chair

Applications Working Group

Data Access Layer Working Group

Data Model Working Group

Grid & Web Services Working Group

Registry Working Group

Semantics Working Group

Data Curation & Preservation Interest Group

Education Interest Group

Knowledge Discovery in Databases Interest Group

Theory Interest Group

Time Domain Interest Group

Operations

Standards and Processes Committee

TCG Vote : Vote_start_date - Vote_end_date

If you have minor comments (typos) on the last version of the document please indicate it in the Comments column of the table and post them in the TCG comments section above with the date.

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