Chris, John, Pat (01)
In the mKR language (http://mkrmke.org),
I explicitly define context to be a list of propositions.
The basic proposition of mKR is (02)
at space=s, time=t, view=v { sentence }; (03)
v is the name of the list of propositions which are the
context of the sentence. s and t are subcontexts.
The propositions define the lattice structure of the
Ontology, including all the relations between the concepts. (04)
The view corresponds to the Microtheory in OpenCyc.
space and time correspond to Space and Time in OpenCyc,
but I remain neutral about specifics of their representation.
For my applications, I use any convenient English-like
representation. (05)
sentence includes statements, questions, commands,
assignments, conditionals, iterations, n-ary relations,
hierarchies, lists, sets, enums, quantifiers, variables,
methods. (06)
Dick McCullough
Ayn Rand do speak od mKR done;
mKE do enhance od Real Intelligence done;
knowledge := man do identify od existent done;
knowledge haspart proposition list;
http://mKRmKE.org/ (07)
----- Original Message -----
From: "Christopher Menzel" <cmenzel@xxxxxxxx>
To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
Sent: Wednesday, February 25, 2009 12:00 PM
Subject: Re: [ontolog-forum] OpenCyc OWL Files (08)
> John F. Sowa wrote:
>> Pat,
>>
>> I mostly agree with your comments, but I'd like to clarify
>> some points.
>>
>> JFS>> During the development of the Common Logic standard,
>> >> Lenat had been asking for the kinds of extensions to CL
>> >> that were added to IKRIS.
>>
>> PH> Actually the pressure came mostly from the Stanford IKL
>> > laboratory,
>
> Pat of course means "KSL laboratory" (better, to avoid redundancy, just
> "KSL").
>
>> ...The old KIF 3.0 had a backquote, which I used to
>> support contexts in conceptual graphs (which were influenced
>> by Peirce's contexts, which have similar expressive power
>> to McCarthy's contexts). I was very happy to get the 'that'
>> operator in IKL, which can be used in the same way as backquote.
>
> It is semantically superior to backquote, however, especially for
> representing intensional contexts. Intuitively, what we believe, fear,
> desire, etc are propositions (or states of affairs, etc -- whatever
> structured entity you take that-clauses to denote), not sentences.
>
> -chris
>
>
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> (09)
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