Alternative algorithms for defuzzification


  • Yu. А. Zak


In the case of overlap (overlay) and different size linguistic terms in asymmetric membership functions represented as LR-intervals, in contrast to the known defuzzification methods, the value of the output variable is calculated in the range considered only in the L-th or R-th parts of linguistic terms that overlap. Algorithms and formula expressions are proposed for calculating the output variable, which is determined on the basis of Fuzzy-inference. Proposed algorithms can be used in control systems, technical and medical diagnostics.


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Methods of system analysis and control in conditions of risk and uncertainty