From: mailbox@dmitry-kazakov.de   
      
   On 25 Aug 2003 12:56:35 -0700, aalwazeer@gistrans.com wrote:   
      
   >I read that some methods use the Center of Gravity of the [Fuzzy   
   >Number/Membership Function] Curve to defuzzify the fuzzy number.   
      
   The method depends on the meaning of the membership function. If its   
   values are possibilities, then center of gravity is meaningless.   
      
   >I don't understand how a fuzzy number can be difuzzified by the same   
   >value when the membership function is represented by an equilateral   
   >triangle, a rectangle, or a trabizoid that have a common base.   
      
   Well, perhaps it just has no sense. In many cases defuzzification is   
   purely empiric, so it is in vain to ask why it gives this or that   
   result. Just because! (:-)) Avoid defuzzification if you can.   
      
   ---   
   Regards,   
   Dmitry Kazakov   
   www.dmitry-kazakov.de   
      
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