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List:       koffice-devel
Subject:    Re: fuzzy logic
From:       Benoit Jacob <jacob () math ! jussieu ! fr>
Date:       2007-02-03 15:56:06
Message-ID: 20070203164635.S29142 () cantor ! math ! jussieu ! fr
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I've had a look. It seems to me that their fuzzy numbers are just a 
special kind of measures (as in measure theory in math) on the real 
numbers. IMHO, their framework is too limited to be really useful. It 
doesn't seem to allow gaussian (as in exp(-x^2)) or dirac measures, which 
are the most common measures one'll have to deal with. It will thus force 
replacing them with approximations, which will not only be unreliable but 
also more computational-intensive.

In short, it's either too little (for real scientific work) or too much 
(if one doesn't need good reliability, then one doesn't need to mess with 
that anyway).

If one wants to be serious with that kind of things, it would be better to 
make a framework that includes enough of measure-theory to encompass 
probability theory (recall that measure-theory and probability-theory as 
just the same thing) because that might have many useful applications.

Benoit

On Sat, 3 Feb 2007, Thomas Zander wrote:

> On Saturday 03 February 2007 14:37, Tomas Mecir wrote:
>> 2007/2/2, Thomas Zander <zander@kde.org>:
>>> Anyone up for trying to see if this thing can be adapted for KSpread?
>>> http://www.openfuzzymath.org/
>>
>> Just had a look. It seems to be a combination of Java classes and
>> OOBasic macros, so the only way of adapting that would be a rewrite
>> using their ideas and algorithms.
>
> This is one of the reasons why I think that a kross java 'module' is a good
> thing.  Reinventing existing code is not really a nice thing to do :)
>
> -- 
> Thomas Zander
>
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