Shared Mechanism-Based Self-Adaptive Hyperheuristic for Regional Low-Carbon Location-Routing Problem with Time Windows

Algorithm 1

Pseudocode of credit assignment in shared mechanism.

FIR is the fitness improvement rate of recently applied operator;

FRR is the normalization of SFIR.

input: FIR, SFIR

output: FRR

if FIR>0 then

for i=0 to Size of the Sliding Window do

op=SlidingSindow. getOperatorPos(i)

Reward=bf_i×FIR.

SFIR_op=SFIR_op+Reward.

end for

TotalReward=∑ SFIR.

for op=0 to NTdo

FRR_op=SFIR_op/TotalReward

end for

save FIR into Sidling Window

else

clear Sidling Window

end if