example4.20

粒子群优化算法pso

close all
clf reset
figure(gcf);
echo on
clc
pause
clc
p=rands(2,500);
pause
clc
plot(P(1,:),P(2,:),'*');
axis([-1.2 1.2 -1.2 1.2]);
title('Input data');
pause 
clc
 net=newsom([-1 1;-1 1],[4 5]);
 pause
 clc
 figure;
 plotsom(net.layers{1}.positions);
 pause
 clc
 figure;
 plotsom(net.IW{1,1},net.layers{1}.distances);
 pause
 clc
 net.trainparam.epochs=1;
 net=train(net,p);
 pause
 clc
 figure;
 plotsom(net.IW{1,1},net.layers{1}.distances);
 pause
 clc