Step 1: Let , , .
Step 2: Generate ω from Ω according to the probability measure Pr of the fuzzy random variables .
Step 3: Generate a determined vector uniformly from the α-cut of fuzzy vector .
Step 4: If , then let . Return to step 3, and repeat times.
Step 5: If , set and return the th least element in { , ,…, } as the fitness value; else go to step 2, and .
Procedure 1: Calculate fitness value using fuzzy random simulation.