Calculate the the performance index of a fuzzy system. function PI=PerformanceIndex(y_sample,y_calculated,PerformanceIndexType) Calculate the the performance index of a fuzzy system for a sample data set. ------------------------------------------------------------------------- Parameters ------------------------------------------------------------------------- y_sample - column vector containing the prescribed output values y_calculated - column vector containing the calculated output values PerformanceIndexType - type (No) of the applied performance index OutputRange - range of the output linguistic variable ------------------------------------------------------------------------- Returned values ------------------------------------------------------------------------- xd - row vector containing the defuzzified values ------------------------------------------------------------------------- Remarks ------------------------------------------------------------------------- Zsolt Csaba Johanyák, johanyak.csaba@gamf.kefo.hu, v. 1.0, 29. September 2007.