[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [Elist Home]
Subject: Re: Proposal to modify Classifications in ebRIM
Len > I asked Lisa for a document number to make a proposal for changing the way > we handle classifications and classification schemes in the RIM. I got #1 > (see Attached PDF file)! I believe the changes you have requested are much needed, though I have reservations about thinking of classification schemes as a single hierarchy. I would ask you to support the following additional use cases: A) A user community wishes to use only a part of a classification, starting at a particular node and restricting the number of levels, and/or members of the sets at one level, that a user can go down below the start point. Example: Only those nodes listed under the heading Europe that were registered as member states of the EU in 1995. (This raises the question of a) how do you classify/qualify a classification node to indicate its membership of another category and b) how do you query the date at which a clssification was valid?) B) A user community may need to define a locally significant extension to an existing code list. Example: ISO 3166-1 defines the United Kingdom of Great Britain and Northern Ireland as a single code point (GB). ISO 3166-2 also defines each of the countries of the UK as separate entries using the 3 digit extensions of the base code, and each of the counties within each of the countries at the level below that. (How these three digit codes would be related to the two digit code in a separate list is another challenge to the RegRep model!) However, for legal reasons, the classification of UK laws requires that there be classifications based on England & Wales, Scotland, Northern Ireland, The Channel Islands and Isle of Man and do not (at present) apply separately to individual counties. Therefore someone wanting to classify these either has to define a proprieatry scheme or needs to define extensions to the existing scheme, either by redefining the level below the UK entry in the 3-letter scheme completely, or by adding a special category for the combination of England & Wales to the existing classification scheme at the middle level of the larger classification scheme. This must be done by someone without the rights to update the ISO 3166 classification. C) A user community may need to use the union of two classifications. Example: Using both ISO 3166 country codes and ISO 639 language codes to indicate language variants such as EN-US. (The combination of the two parts of ISO 3166 mentioned above is another example.) Martin Bryan Technical Manager, The Diffuse Project ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Diffuse: http://www.diffuse.org, mailto:mtbryan@diffuse.org The Diffuse Project is funded under the European Commission's IST programme. Diffuse publications are maintained by TIEKE (Finnish IT Development Centre), IC Focus and The SGML Centre. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The SGML Centre, 29 Oldbury Orchard, Churchdown, Glos GL3 2PU, UK Phone/Fax: +44 1452 714029 E-mail: mtbryan@sgml.u-net.com For further details about The SGML Centre visit http://www.sgml.u-net.com
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [Elist Home]
Powered by eList eXpress LLC