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Chapter 17
network may also have other, direct inputs that do not need fuzzy
processing. The network outputs, which are crisp numbers, undergo
the same sequence of operations.
All of these operations are not always used. Maybe only the
input side needs fuzzy processing, or only the output side. Sometimes
defuzzification is not needed. The entire sequence is shown here for
generality. In most practical applications, the organization is far more
modest.
Membership Functions
A fundamental tenet of fuzzy set theory is that observations can
partially belong to predefined sets. This is in sharp contrast to
traditional Boolean logic, in which