In Fuzzy Transportation Problem, we bound to subtract fuzzy trapezoidal numbers, if we use them to define uncertain data. Then a negative distribution is raised.We know that in a transportation problem negative distribution is meaningless. A fuzzy trapezoidal number (a,b,c,d) is said to be negative if a
Mojtaba Parhizi
you can use arithmitic law and add minimum negative value and add all value with this specefice number for att transfer numbers to positive side of axel.(right side). proportion and distinatation between every number will keep constant. for example if you have data range between -3 to +3 you can add -3 to all data new transformed data will have range between 0 to 6 then you can make fuzzification.
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