ISSUE-131

Last Call Comment: mappings with a boolean expression

State:
POSTPONED
Product:
SKOS
Raised by:
Alistair Miles
Opened on:
2008-09-30
Description:
Raised by Johan De Smedt in [1]:

"""
The mapping constructs are not practical for expressing the mapping between
concepts in the following use case.
(maybe this use case is not considered as part of the skos objective, then
please ignore the remark)

- ConceptSchema csA, csB, ... are used to classify content
  Typically csA, csB, ... are large and complex content schemes, used by
experts and/or expert tools
- Taxonomies tM, tN, ... are used in a an custom [i.e. target audience
specific] application
  Typically tM, tN, are made at hoc and are not used for direct content
classification (This exclusion need not be absolute)
- A seach expressed in terms/concepts of tM, tN, ... 
  must be resolved by a one-way mapping (tN & tM & ...) ->
boolean-expression-of(csA * csB * ... )

Multiple of these mappings allow content to be uniquely indexed (indexed
over csA, cs B, ...)
While supporting reuse of that indexed content in different search
strategies for different audiences
(user query specifies concepts from tM, tN, ...)

The current mapping does not address such mappings (with a boolean
expression)
"""

Requires discussion.

[1] http://lists.w3.org/Archives/Public/public-swd-wg/2008Sep/0026.html
Related emails:
  1. ISSUE-131: Last Call Comment: mappings with a boolean expression (from dean+cgi@w3.org on 2008-09-30)
  2. Re: SKOS Comment (from alistair.miles@zoo.ox.ac.uk on 2008-09-30)
  3. ISSUE-131 draft response (from alistair.miles@zoo.ox.ac.uk on 2008-10-01)
  4. SKOS comment: Last Call Working Draft (from panzerm@oclc.org on 2008-10-03)
  5. ISSUE-186: Last Call Comment: Mappings (from dean+cgi@w3.org on 2008-10-08)
  6. Re: SKOS comment: Last Call Working Draft (from sean.bechhofer@manchester.ac.uk on 2008-10-08)
  7. Re: ISSUE-186: Last Call Comment: Mappings (from aisaac@few.vu.nl on 2008-10-08)
  8. Real List of No Changes! (from sean.bechhofer@manchester.ac.uk on 2008-10-14)
  9. Re: ISSUE-186: Last Call Comment: Mappings (from aisaac@few.vu.nl on 2008-10-17)
  10. Re: ISSUE-186: Last Call Comment: Mappings (from alistair.miles@zoo.ox.ac.uk on 2008-10-22)
  11. Re: ISSUE-186: Last Call Comment: Mappings (from stella@lukehouse.org on 2008-10-22)
  12. ISSUE-131: Last Call Comment: mappings with a boolean expression (from alistair.miles@zoo.ox.ac.uk on 2008-11-06)
  13. Re: ISSUE-131 draft response (from alistair.miles@zoo.ox.ac.uk on 2008-11-06)
  14. RE: ISSUE-131: Last Call Comment: mappings with a boolean expression (from Johan.DeSmedt@wkb.be on 2008-11-06)

Related notes:

2008-11-10: ACTION: Accept

2008-11-10: CHANGE-TYPE: None

2008-11-10: RESOLUTION: The Working Group has considered mappings between concepts and Boolean-like expressions. This fell within the scope of two issues: [ISSUE-39] and [ISSUE-40]. In [1] it was proposed not to include any boolean-like grouping constructs in SKOS, because this would require a substantial addition to the theoretical foundations of SKOS. This was discussed during the 2007-12-18 telecon and became part of the resolution to ISSUE-39 adopted by the Working Group. Any third party is, of course, free to define an extension for SKOS which provides a vocabulary for complex, boolean-like mapping expressions, and which ideally would also develop the necessary theory to allow those expressions to be used in query translation software. This, however, has been deemed out of scope for the current SKOS Recommendation Track work.

2008-11-10: COMMENTER-RESPONSE: Accept