PSO: Using PSO algorithm to optimize two-element function to find optimal individual fitness-jason NIU

Figure[x,y] = Meshgrid ( -5:0.1:5,-5:0.1:5), z = x.^2 + y.^2-10*cos (2*pi*x)-10*cos (2*pi*y) + 20;mesh (x, y, z) hold onc1 =   1.49445;C2 = 1.49445;maxgen = 1000;  Sizepop = 100; Vmax = 1;     Vmin = -1;popmax = 5;     Popmin = -5;for i = 1:sizepop pop (i,:) = 5*rands);        V (i,:) = Rands);   Fitness (i) = Fun (Pop (i,:));   end[bestfitness Bestindex] = max (fitness); zbest = Pop (bestindex,:);    Gbest = Pop;   Fitnessgbest = fitness;   Fitnesszbest = bestfitness; For i = 1:maxgen for j = 1:sizepop V (j,:) = V (j,:) + c1*rand* (gbest (J,:)-pop (J,:)) + c2*rand* (zbest-p        OP (J,:));        V (J,find (V (j,:) >vmax) = Vmax;                V (J,find (V (j,:) <vmin)) = Vmin;        Pop (j,:) = Pop (j,:) + V (j,:);        Pop (J,find (pop (J,:) >popmax)) = Popmax;                Pop (J,find (pop (J,:) <popmin)) = Popmin;     Fitness (j) = Fun (Pop (j,:));            End for j = 1:sizepop If Fitness (j) > Fitnessgbest (J) Gbest (j,:) = Pop (j,:); FitnEssgbest (j) = Fitness (j);            End If Fitness (j) > Fitnesszbest zbest = Pop (j,:);        Fitnesszbest = Fitness (j);            End End YY (i) = fitnesszbest; End[fitnesszbest, Zbest]plot3 (zbest (1), Zbest (2), fitnesszbest, ' ro ', ' linewidth ', 1.5) title (' Particle swarm algorithm: A three-dimensional grid diagram of the target function drawn, Red circle for the most advantage-jason niu ') figureplot (yy) title (' PSO: Using particle swarm optimization algorithm to find the optimal individual fitness for the target function-jason niu ', ' fontsize ', ' xlabel ', ' the ' Evolutionary algebra ', ' FontSize ', Ylabel (' Fitness ', ' fontsize ', 12);

PSO: Using PSO algorithm to optimize two-element function to find optimal individual fitness-jason NIU