Re: Thomas' Fuzziness and Probability

From: Earl Cox (earldcox1@home.com)
Date: Thu Aug 16 2001 - 11:07:23 MET DST

  • Next message: Tomas Nordlander: "Help! Fussy logic + Expert system = True?"

    Thank you Stephan!

    This is exactly the point I should have made before launching into my overly
    long example of fuzzy reasoning. I should force myself to focus a bit more
    on the objection at hand.

    earl

    "Stephan Lehmke" <Stephan.Lehmke@cs.uni-dortmund.de> wrote in message
    news:9ldgfe$nqo$1@fbi-news.cs.uni-dortmund.de...
    > In article <23af61c2.0108142014.6f210d4f@posting.google.com>, Robert
    Dodier writes:
    > >
    > > Any such definition must ignore the relation between elements in a
    > > compound: if truth(B')=truth(B), then in any proposition containing
    > > A and B, I can swap in B' in place of B, and get exactly the same
    > > truth value for the compound; whether the elements are redundant,
    > > contradictory, or completely unrelated doesn't enter the calculation.
    >
    > It's exactly the same in two-valued logic. As fuzzy logic agrees with
    > classical logic on the extremal truth values, there is no way the
    > behaviour you observe can be avoided.
    >
    > If _you_ have some additional knowledge about how eye colors usually
    > behave, you have to introduce this knowledge as an additional axiom,
    > exactly as you would do in two-valued logic.
    >
    > regards
    > Stephan
    >

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