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The first step in the development of a fuzzy system is to select a preliminary
description of the system. This description will be later refined as a result
of the tuning and verification stages.
Xfuzzy 3 contains two tools assisting in the description of fuzzy systems:
xfedit and xfpkg.
The first one is dedicated to the logical definition of the system, that is,
the definition of its linguistic variables and the logical relations between
them. On the other side, the xfpkg tool eases the description of the
mathematical functions assigned to the fuzzy operators, linguistic hedges,
membership functions and defuzzification methods.
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