Algorithm 1: MFEA

Input: pa, pb: two parent candidates randomly selected from pop.

Output: ca, cb: the offspring generated.

Begin

1:  If τa == τb or rand < rmp:

2:    pa and pb crossover and mutate to get ca and cb.

3:       If τa == τb:

4:         ca imitates pa. cb imitates pb.

5:       Else

6:         If rand < 0.5:

7:           ca imitates pa. cb imitates pb.

8:         Else

9:           ca imitates pb. cb imitates pa.

10:         End If

11:       End If

12:  Else

13:    pa undergoes polynomial mutation to produce offspring ca.

14:    pb undergoes polynomial mutation to produce offspring cb. 15:  ca imitates pa. cb imitates pb.

16:  End If

End