From: clearking@gmail.com   
      
   I'm a phd student studying clustering for a while. I'm interested in   
   fuzzy clustering right now and I've read some papers in the field.   
   there is a big puzzle haunting in my mind all the time. The question   
   is, what is the meaning of fuzzification in clustering? they use the   
   fuzzy process in the course of clustering, not in the input or the   
   output, i.e., they crisply assign the data to the clusters according   
   to the membership. the so what's the meaning or function of   
   fuzzification here?   
      
   so can anyone help me to solve the puzzle? why do people use fuzzy   
   clustering ?   
      
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