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Re: KR and RDF Redux

From: Richard H. McCullough <rhm@cdepot.net>
Date: Wed, 11 Dec 2002 09:58:37 -0800
Message-ID: <006401c2a13e$ee6b2a00$bd7ba8c0@rhm8200>
To: "Charles McCathieNevile" <charles@w3.org>, "Seth Ladd" <seth@brivo.net>
Cc: <www-rdf-interest@w3.org>
KR does have canonical forms.
Where RDF has one form (the triple) for all properties,
KR has a different form/syntax for each different type of property:
attribute, part, action, relation.
Dick McCullough 
knowledge := man do identify od existent done
knowledge haspart proposition list

  ----- Original Message ----- 
  From: Charles McCathieNevile 
  To: Seth Ladd 
  Cc: www-rdf-interest@w3.org 
  Sent: Wednesday, December 11, 2002 9:34 AM
  Subject: Re: KR and RDF Redux

  I think the real point is that we are trying to represent information that
  does not have a single canonical form in natural language, so the particular
  syntax we use to represent it isn't that important given that it is selected
  from among the many that meet the requirements. (There, of course lie the
  details wherein the devil hides).

  'John takes a walk' uses 'walk' as a noun
  'John walks' uses it as a verb.

  In some cases there are shades of different meaning, in others they are
  equivalent statements. If you have a case where they are meaningfully
  different then this discussion isn't getting fine enough and this example
  isn't relevant anyway, but it does seem to illustrate the general point.



  On Wed, 11 Dec 2002, Seth Ladd wrote:

  >Charles McCathieNevile wrote:
  >> journey
  >>   by John
  >>   from hisHouse
  >>   to theStore
  >>   purpose
  >>     purchase milk
  >> (all except the purpose bit is readily available in the work that Dan
  >> Connolly, Jim Ley, I and others have done in encoding flight information.
  >> Adding a purpose for the journey is a good idea - especially since our use
  >> case often involves going to meetings (already expresed as RDF) and the rest
  >> seems to be trying to meet friends (fair amount of data available in FOAF)
  >I think the point here is that the solution to "John walked to the store"
  >is turned inside out from a verb to a noun.  Create a noun (object) that is
  >the result of the action performed.  Then you can add many properties to
  >this object and talk about it.
  >This also helps when trying to use CRUD functions on everything (in an
  >attempt to follow REST principles).  Inside of "door.enter()" you can
  >"Entrance.create()".  Once I've done that, I can then talk about (apply
  >properties to) an Entrance, because it is now a Thing.

  Charles McCathieNevile  http://www.w3.org/People/Charles  tel: +61 409 134 136
  SWAD-E http://www.w3.org/2001/sw/Europe ------------ WAI http://www.w3.org/WAI
   21 Mitchell street, FOOTSCRAY Vic 3011, Australia  fax(fr): +33 4 92 38 78 22
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Received on Wednesday, 11 December 2002 12:58:38 UTC

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