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   comp.ai.fuzzy      Fuzzy logic... all warm and fuzzy-like      1,275 messages   

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   Message 812 of 1,275   
   Joe Pfeiffer to Silvert   
   Re: What is a fuzzy rule?   
   08 Aug 09 23:00:40   
   
   4c1ec138   
   From: pfeiffer@cs.nmsu.edu   
      
   Silvert  writes:   
      
   > On Aug 7, 10:07 pm, Joe Pfeiffer  wrote:   
   >   
   >> Your description doesn't quite give me a clear idea of how your rules   
   >> work -- when you say you can obtain crisp rules by defining "close to   
   >> work" it sounds like you're using a boolean value.  But then your   
   >> description of "too far OK if cheap enough" it goes back to sounding   
   >> fuzzy.   
   >>   
   >> So...  if your idea of "close to work" has a value of 0 at 1.5 miles   
   >> away or farther, and a value of 1 at .5 miles away or closer, and is   
   >> something in between (for instance, a linear function) in between the   
   >> two distances, you've got a fuzzy rule and I've got no idea what the   
   >> mathemeticians are talking about.   
   >>   
   >> If your idea of "close to work" is 0 at distances beyond one mile, and 1   
   >> for distances at or within one mile, it's crisp.   
   >   
   > Sorry, I thought that concepts like "close to work" were so obviously   
   > fuzzy that I didn't specify the membership. Up to 500 m the membership   
   > is 1, over 50 km the membership is 0, and there is some sort of   
   > interpolation in between. Just think of what the words mean in human   
   > terms.   
      
   I'd have agreed, except that you then went on to say it gave you a crisp   
   rule.  As I've seen the term used, "crisp" means boolean which is why I   
   was confused.  With your clarification, I'm back to having no idea what   
   their objection was.   
   --   
   Klingon programs don't have parameters.  They have arguments and win   
   them (Walter Bushell)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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