Table 6: Optimization process carried out in each variable for robust method.

VariableAim in TaguchiRobust

𝑡 5 0 % Smaller is best (to120 minutes) 𝐴 1 𝐵 1 𝐶 1 𝐷 0 𝐸 1 𝐹 1 𝐺 1 𝐻 1
AUCBigger is best 𝐴 1 𝐵 1 𝐶 0 𝐷 0 𝐸 1 𝐹 0 𝐺 0 𝐻 1
EEBigger is best 𝐴 1 𝐵 0 𝐶 0 𝐷 0 𝐸 1 𝐹 0 𝐺 1 𝐻 1
SRBigger is best 𝐴 1 𝐵 1 𝐶 1 𝐷 0 𝐸 0 𝐹 0 𝐺 1 𝐻 1
SFBigger is best 𝐴 1 𝐵 0 𝐶 1 𝐷 1 𝐸 0 𝐹 1 𝐺 1 𝐻 0
DmSmaller is best 𝐴 1 𝐵 1 𝐶 0 𝐷 1 𝐸 0 𝐹 1 𝐺 1 𝐻 1