Re: Uncertainty and Lisa

"Young, David" <[email protected]> writes:

> Upon request, I've decided to look into adding support for certainty factors

As one of those who suggested this, let me thank you for looking into it.


> most popular representations of cf; since my time is limited, I think I'll
> start with the model described in PAIP and work on that. After that has been
> evaluated by the Lisa community, I'll consider adding other implementations.
>
> If you have suggestions for the programming interface to cf -- new rule
> syntax, representations for cf objects, etc. -- please send them to me.

Here is a sample rule from the MYCIN implementation of PAIP:

  (defrule 52
    if (site culture is blood)
       (gram organism is neg)
       (morphology organism is rod)
       (burn patient is serious)
    then .4
       (identity organism is pseudomonas))

Where .4 is the cf.  I think a syntax like the following is similar in
spirit to PAIP's:

  (defrule name (key*) pattern* => cf action*)


Paolo
-- 
Why Lisp? http://alu.cliki.net/RtL%20Highlight%20Film


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