Fuzzy set approach

Introduction to Fuzzy sets

 

Sometimes there is a need for making a subjective decision or estimation on some occurrence or on a process.

 

  • YES or NO - not good
  • MAYBE, ALMOST or POSSIBLY - much better

 

Fuzzy set is a set of values without defined strict boundaries.

 

  • Regular sets - value is a member or not a member (there is a strict boundary)
  • Fuzzy sets - value have memberness presented with a 0.2, 0.3, ...
Example of fuzzy set

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