我在Matlab中发现了一些关于比较GA(遗传算法)和ANFIS(自适应神经模糊推理系统)的代码。当我运行以下代码时,会发生以下错误:
试图访问M(1,2);由于数字(M)= 1,因此索引越界。 错误(第4行)
M(1)= M(I,2);
由于我是Matlab的初学者,我无法找到问题所在。 这是代码:
function r=err(M)
for i=1:342;
s(i)=M(i,1);
m(i)=M(i,2);
a(i)=M(i,3);
b(i)=M(i,4);
end
dat=load('data2.txt','-ascii');
global X Y
X=0; Y=0;
X=dat(:,1);
Y=dat(:,2);
options = gaoptimset(@ga);
opts = gaoptimset(options,'PopulationSize',250);
options.PopInitRange = [0;5];
options.EliteCount = 1;
options.Generations = 250;
options = gaoptimset('PlotFcns', @gaplotbestf);
[param_ga fval] = ga(@temp , 10000 , [],[],[],[],[],[],[],options);
n_data=length(X);
err=0;
for ii=1:n_data
for jj=1:342
w(jj)=exp(-1*((X(ii)-param_ga((jj)*m(jj))/(param_ga((jj)*s(jj))))^2));
end
sum_w=sum(w);
ww=w/sum_w;
y=0;
for jj=1:342
y=y+ww(jj)*(param_ga((jj)*b(jj))+param_ga((jj)*a(jj))*X(ii));
end
err=err+(y-Y(ii))^2;
end
GA_AVERAGE_ERROR=err
numMFs = 10;
mfType = 'gauss2mf';
epoch_n = 500;
in_fis = genfis1(dat,numMFs,mfType,'linear');
[out_fis,error,stepsize]= anfis(dat,in_fis,epoch_n);
x=min(dat(:,1)):0.1:max(dat(:,1));
y=evalfis(x,out_fis);
yy=evalfis(dat(:,1),out_fis);
e=(yy-dat(:,2)).^2;
E=sum(e)/length(e);
ANFIS_AVERAGE_ERROR=E
if ANFIS_AVERAGE_ERROR>GA_AVERAGE_ERROR
disp 'ANFIS_AVERAGE_ERROR > GA_AVERAGE_ERROR'
elseif ANFIS_AVERAGE_ERROR<GA_AVERAGE_ERROR
disp 'ANFIS_AVERAGE_ERROR < GA_AVERAGE_ERROR'
else disp 'ANFIS_AVERAGE_ERROR = GA_AVERAGE_ERROR'
end
n=1:epoch_n;
y=x.^(2.5*sin(1*x))+x.^3-21*x.^2+99*x+21;
figure(1)
scatter(dat(:,1),dat(:,2))
hold on
plot(x,evalfis(x,out_fis),'-r','LineWidth',2);
plot(x,y,'-g','LineWidth',2);
hold off
legend('Training Data','ANFIS Output','Major Function');
disp(' Result of Program ');
disp ('GA_AVERAGE_ERROR =');disp(GA_AVERAGE_ERROR)
disp ('ANFIS_AVERAGE_ERROR =');disp(ANFIS_AVERAGE_ERROR)
if ANFIS_AVERAGE_ERROR>=GA_AVERAGE_ERROR
r=0;
else r=1;
end
if r==1
disp 'ANFIS METHOD better than GENETIC ALGORITHM METHOD for this case'
else
disp 'GENETIC ALGORITHM METHOD better than ANFIS METHOD for this case'
end
当我评论第4行第5行,第6行和第7行产生错误时。 感谢您的关注,感谢任何帮助。
答案 0 :(得分:0)
numel(M)= 1表示M是标量。因此,它没有条目M(1,2)。因此,您尝试访问第4行中不存在的条目会产生错误。