If I want to tackle the uncertainty of parameters of a transportation problem then which number is better to choose in the parameters among trapezoidal fuzzy number and rough interval number. I need to know the proper reason.
Trapezoidal functions are better because you get more accurate results using this method. but, in the interval method, only one upper and lower bound is calculated.
I agree with Mohammad Tavassoli. The definition of the problem by trapezoidal function provide more sensitivity and accuracy comparing to interval method. You can find some papers about that.