Il giorno 19/apr/2011, alle ore 22.49, L. Markowsky ha scritto:
>
>
> Subject: Re: [OctDev] request to register as a developer
> From: [email protected]
> Date: Sun, 17 Apr 2011 20:59:33 +0200
> CC: [email protected]; [email protected]
> To: [email protected]
>
> Hello,
>
> sorry i misread, you told you had no need to implement fuzzy set theory
> operators, i understood the opposite :). So i don't know, let's see what
> Carlo thinks about it. I think that maybe we can rename our package as "fuzzy
> set theory" and your as "fuzzy inference system" or whatever. Anyway it
> sounds strange to me that you didnt implement the fuzzy set theory operators
> to build something that conceptually is on top of them. How have you
> implemented for example the selection of rules to apply if not by min-maxing
> the conditions? I'm just curious about it :)
>
> Piero
>
> Hello,
>
> I've been puzzled by your question. I implemented a subset of the MATLAB
> Fuzzy Logic Toolbox using only publicly-available documentation
> (www.mathworks.com/help/toolbox/fuzzy/). In order to be MATLAB-compatible,
> the design of my package followed their docs. Does that answer your question?
>
> Thanks,
> L.
Hello,
not properly, it's not a matter of having the same API as Matlab fuzzy toolbox
rather than how it is implemented the composition under the hood. We
implemented fuzzy set theory operators as they are the basement semantic for
fuzzy logic (rules in a rulebase are in disgiunction between each other and
antecedents of the same rule are in conjunction resulting in a maxmin
composition computarion) as seen in for example "Fuzzy Logic with engineering
applications" by Timothy Ross around page 140-150. The description of our
operators can be find in the same book from page 34 to 41 and from 53 to 62.
As i can see from your code (eval_rules_mamdani.m for example) you implemented
the min computation of the single membership functions of the antecedents in a
rule and then aggregating by maxing hte results obtained.
Or approach doesn't mix semantic a syntax in such way, so it is quite
impossible to modify your system to use our functions at this point, it should
have been done from the principle, i suppose.
Piero
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