Misc. Presentations

1
Misc. Presentations

• Steve Carson
• GSC Associates
• for JTC 1/SC 24 WG 8 Palm Springs, CA USA
• August 2001

2
Groups for discussion

• A -- most general comments
• B -- PAB IHO, FACC refinements
• C -- GSC country code refinements (in UK
  comments)
• D -- comments on definitions of abstract sets
• E -- comments that just change or add EG
  assignments
• F -- GSC comments on structured definitions
• G -- other new and revised definitions (some
  select ones need to be pulled out as there are
  some overlapping comments)
• - comments on the main body text
• - the comments on table entries that overlap or
  that might be controversial
• - editorial comments

3
Religions how current enumerants map

• Buddhist xxxx
• Christian xxxx
• Greek Orthodox
• Judaism xxxx
• Moslem ? Islam xxxx
• Protestant
• Roman Catholic
• Shinto xxxx

4
Concepts and definitions
intension
Concept
Definition
extension
Set of instances
5
Suggestions for NR and QR

• If the EDCS definition is intended to represent
  the same concept as a definition from an external
  reference, then we can make a NR to that
  definition.
• If the EDCS definition is derived from but does
  NOT represent the same concept as the external
  definition then we can make a QR to that
  definition.
• Example A_OR_B mapping to A and to B separately

6
When are two definitions the same?
Consider these definitions of aluminum

• A light silvery ductile and malleable metal, not
  readily tarnished by air, which is a chemical
  element, atomic no. 13 (Symbol Al) - The New
  Shorter Oxford English Dictionary
• A silvery-white, ductile metallic element, the
  most abundant in the earth's crust but found only
  in combination, chiefly in bauxite. Having good
  conductive and thermal properties, it is used to
  form many hard, light, corrosion-resistant
  alloys. Atomic number 13 atomic weight 26.98
  melting point 660.2C boiling point 2,467C
  specific gravity 2.69 valence 3. - The American
  Heritage Dictionary of the English Language,
  Fourth Edition
• A lightweight silvery metal used either pure or
  as an alloy for making utensils or fittings where
  lightness is an advantage. - Oxford American
  Dictionary
• A silvery light and malleable metal, not
  tarnished by air. - The Pocket Oxford Dictionary
• A silvery lightweight metal, that is a chemical
  element. It does not rust. -Webster's New World
  Dictionary for Young Reader

7
When are two definitions the same?

• The five definitions of aluminum on the previous
  slide all are intensions of the same concept.
• Therefore, all five definitions are the same in
  the sense that the set of (object) instances that
  satisfy each definition (that is, the extensions
  of the concepts) are the same.
• So, two definitions are the same if the set of
  objects that satisfy each of them is the same.

8
Minor changes to definitions

• A change in definition A to create definition B
  is minor if A and B are intensions of the same
  concept.
• It is difficult to give a complete specification
  of minor changes, but such changes include
• replacement of words by synonyms
• changes in grammar or sentence structure that do
  not change meaning.

9
References require