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From: jamesw@uhunix.uhcc.Hawaii.Edu (James Williams)
Subject: Re: Membership functions and non-existant data.
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Date: Wed, 3 May 1995 15:50:55 GMT
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Hi, I got a nice e-mail on the topic from Trevor.  Many thanks to Trevor 
for the references which are probably right on that I will check out.

I'm posting the e-mail below.


Karl Enrique Ihrig	ihrig@v1.eph.qub.ac.uk
Biggart House 137
Broadway 
Belfast BT12 6HG	I'm not Irish.  I'm American Mexican in Belfast.
-------------------------------------------------------------------------

From acrc.bris.ac.uk!trevor Tue May  2 21:38:15 1995

Check Jim Baldwin's papers on support logic, where an interval
value is used : (0 0) = false,  (1 1) = true, (0 1) = uncertain.

It is more than fuzzy though - it goes into mass assignment theory
which includes fuzzy as a special case, also probability as a special case.

If you are interested in logic programming with uncertainty, try
Fril which is a Prolog system with fuzzy and probabilistic uncertainty
built-in.

Alternatively, have a look at

Baldwin, J. F., Martin, T. P. & Pilsworth, B. W. (1995).
"FRIL - Fuzzy and Evidential Reasoning in AI"
 Research Studies Press (Wiley). ISBN 0 471 95523 X


which also contains a Fril demo disk for the Mac and WIndows 3.1

Trevor Martin

_______________________________________________________________________________
 Advanced Computing Research Centre     ||      Phone: +44 117 9288200
 Department of Engineering Maths        ||      Fax:   +44 117 9251154
 University of Bristol, BS8 1TR, UK     ||      email: trevor.martin@bris.ac.uk
_______________________________________________________________________________




