>Dear Pat et al,
>
>
>
><snip>
>> FWIW, here is the definition of "context" that I put forward at
>> Heidelberg, and which seemed to meet with some general acceptance.
>>
>> -------
>> Theories of meaning invariably focus their attention on some subset
>> of the many factors which can possibly influence the actual meaning
>> conveyed by a meaningful utterance or sentence or diagram, or any
>> symbolic structure or act. The other factors or aspects which may
>> influence meaning, but which are not explicitly examined by the
>> theory, are often referred to as "context". Thus, the term "context"
>> has no single meaning: it is used simply to refer to anything (or
>> sometimes everything) which can influence meaning but which is
>> outside the scope of the current theory. It is always defined
>> negatively.
>> -------
>
>MW: This fits very well with how I have come to understand context,
>which roughly speaking is "What was left out because it was so
>obvious". (01)
Or so arcane or difficult that nobody wanted to think about it. (02)
>MW: The problem is that what is obvious in one context, is not obvious
>in another context, and provides significant hinderance when you try
>to integrate the two ontologies. (03)
+1 (04)
>As a result, my approach to context
>in this sense is that if you can identify one, try to eliminate it by
>making it explicit. (05)
+5 Exactly. Which is why its so much better to
have an ontology of contexts (if one must) rather
than a context logic. (06)
>
>MW: On the other hand, this idea of context seems to me to be different
>from what John S is talking about with boxes, and Pat H about IKL. This
>is about saying something about propositions, it seems to me. (07)
Two sides of the same coin. Propositions (or
sentences) change their truth-value in different
contexts. Is this more about the context or the
propositions? Doesnt really matter. (08)
>
>MW: Equally, Duane seems to be talking as much about an approach to
>analysis as anything else, with a handy check-list of "contexts" to
>make sure you have not left something out. (09)
I havnt checked the details yet, but it sounds
like the big plus is similar to the reason Cyc
likes to use contexts: so one can use the same
word to have a 'family' of distinct but related
meanings and use machinery to select or compose
the appropriate one automagically, rather than
having to remember them all explicitly. This is a
good point, but its really to do with the design
of human interfaces rather than the basic logic
itself. (010)
Pat (011)
>
><snip>
>
>Regards
>
>Matthew West
>Reference Data Architecture and Standards Manager
>Shell International Petroleum Company Limited
>Registered in England and Wales
>Registered number: 621148
>Registered office: Shell Centre, London SE1 7NA, United Kingdom
>
>Tel: +44 20 7934 4490 Mobile: +44 7796 336538
>Email: matthew.west@xxxxxxxxx
>http://www.shell.com
>http://www.matthew-west.org.uk/
>
>
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