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Re: Label management information in SKOS-XL (continuing from UMTHES and SKOS-XL)/ other data elements

From: Aida Slavic <aida@acorweb.net>
Date: Thu, 05 Nov 2009 12:00:03 +0000
Message-ID: <4AF2BE43.9060106@acorweb.net>
To: 'SKOS' <public-esw-thes@w3.org>

With respect to Cristophe info about management data and Leonard's 
comment it
may be interesting to share experience from UDC

LexicalValue String      1 The wording of the term
identifier   String      1 A unique identifier for the term
created      date     0..1 The date when the term was created
modified     date     0..1 The date when the term was last modified
source       String   0..1 The person(s) or document(s) from which the 
term was taken
Status       String   0..1 Indication of whether the term is candidate, 
approved, etc.
lang         language 0..1 A code showing the language of the term. This 
should be
                           included if the thesaurus supports more than 
one language

 On a top of these above we have the following data:
- 'modified' is a block of elements containing info about: date, person, 
source, elements(fields) modified
- notation history
    - used for (if the same notation was used in the past to denote an 
other class/concept)
    - replaces (if the same concept/class was in the past presented by 
some other notation)
- cancellation data -  linked to the Status :
    date; person; source
    replaced by - links to a new notation which replaces this one which 
is cancelled (if applicable)
- class number type: simple or pre-composed
    If number is pre-composed (pre-coordinated) then the string is 
entered in a separate field in a coded fashion - each
    code identifies the type of facet from which single classification 
numbers comes (place, time, form,... or  another subject)
  With respect of pre-composed numbers, typically classification will 
also have  to have data such as as "derived from" - and "instructions 
for derivations/divisions"
You will get a better idea about this from 76x Number building block 
from MARC 21 Format Concise Classification 
(NB! that this format is created mainly with Library of Congress 
Classification and Dewey Decimal Classification requirements in mind).
'Derived from' is a special kind of relationships that classification 
schemes are likely to have as, for instance, notation for English 
literature or for English people or Linguistics of English language have 
notation derived from from the notation for English language. This is 
typical for most of documentary classifications.

I do not propose any of the above to be part of SKOS or ISO - this is 
mainly in response to Leonard's note about missing elements with respect 
to classification.



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Received on Thursday, 5 November 2009 12:00:38 UTC

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