An Advanced Chemical Reaction Optimization Algorithm Based on Balanced Local and Global Search

Algorithm 1

ACRO algorithm.

(1) Input: Objective function f, constraints

(2) ∖∖Initialization

(3) Set ini PopSize, iniKE, buffer, CollRate, iter,

ChangeRate and StepSize

(4) Create PopSize number of molecules

(5) ∖∖Iterations

(6) while (the stopping criteria not met) do

(7) if  iter % and iter/n > 10

(8)if totalsuccess  

(9)StepSize = StepSize/0.85

(10)else

(11)StepSize = StepSize × 0.85

(12)

(13)

(14) Generate

(15)if

(16)Randomly select one molecule

(17)if Decomposition criterion met then

(18)Trigger Decomposition

(19)else

(20)Trigger On-wall Ineffective Collision

(21)

(22)else

(23) Randomly select two molecules

(24)if Synthesis criterion met then

(25)Trigger Synthesis

(26)else

(27)Trigger Inter-molecular Ineffective Collision

(28)

(29)

(30)Check for any new minimum solution

(31)

(32) ∖∖The final stage

(33) Output the best solution found and its objective function value