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This
report is about type-2 fuzzy logic systems. It describes some
very new ideas that will let you model linguistic uncertainty
totally within the framework of fuzzy logic.
Words mean different things to different
people. So rules that use words have linguistic uncertainties.
Type-2 fuzzy logic provides a measure of
dispersion that captures the effects of rule uncertainties. This
seems to be as fundamental to the design of systems that include
such uncertainties as variance is to the mean.
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