population.m

基于自组织特征映射（SOM）的系统辨识算法实现

P=[0.5512 0.5123 0.5087 0.5001 0.6012 0.5298 0.5000 0.4965 0.5103 0.5003;
   0.4488 0.4877 0.4913 0.4999 0.3988 0.4702 0.5000 0.5035 0.4897 0.4997];
plot(P(1,:),P(2,:),'+r');
hold on 
net=newsom([0 1;0 1],[3 4]);
w1_init=net.IW{1,1};
plotsom(w1_init,net.layers{1}.distances);
a=[100 300 500];
for i=1:3
    net.trainParam.epochs=a(i);
    net=init(net);
    net=train(net,P);
    figure;
    w1=net.IW{1,1};
    plotsom(w1,net.layers{1}.distances);
y=sim(net,P); %若设p＝[0.5;0.5];y=sim(net,p) 则可以根据p的值来判断它属于哪一类
y=vec2ind(y)
end