求Matlab指导，Undefined function 'minimize' for input arguments of type 'struct'.错误是

答案:4 悬赏:50 手机版

解决时间 2021-02-12 13:07

提问者网友：趣果有间
2021-02-11 22:17

clear all
x(1)=1.02;
x(2)=1.56;
col = {'k',[.8,0,0],[0,.5,0],'b',[0,.75,.75],[.7,0,.5]};
sn = 0.2;
for i=3:100
x(i)=0.75*x(i-1)+0.25*x(i-2)+randn(1,1)*sn;
end
%i=1:100;
%plot(i,x,'r*');
L=2;
xtr=ones(98,2);
for i=1:98
for ii=1:L
xtr(i,ii)=x(i);
end
end
for t=1:98
yt(t)=x(t+2);
end
ytr=yt';
cov = {@covNNone}; ell = 0.4; sf = 1; % setup the GP
hyp0.cov = log([ell;sf]);
mean = {@meanSum,{@meanLinear,@meanConst}};a = [1/5;1/5]; b =1; % m(x) = a*x+b
hyp0.mean = [a;b];
lik={@likGauss};
inf={@infExact};
hyp0.lik = log(sn);
Ncg = 50; % number of conjugate gradient steps
sdscale = 0.5; % how many sd wide should the error bars become?
hyp = minimize(hyp0,'gp', -Ncg, inf, mean, cov, lik, xtr, ytr); % opt hypers
[nlZ] = gp(hyp, inf, mean, cov, lik, xtr, ytr);
[ymu, ys2] = gp(hyp, inf, mean, cov, lik, xtr, ytr, xtr); % predict
i=1:100;
figure;
hold on;
plot(i,x,'r*');
i=3:100;
plot(i,ymu,'B+');
ysd = sdscale*sqrt(ys2);
plot(i,ymu+ysd,'k');
plot(i,ymu-ysd,'k');
%fill([i,flipud(i)],[ymu+ysd;flipud(ymu-ysd)],'b');
k=1;
xi=i;
ytr1=(ymu+ysd)';
ytr2=(ymu-ysd)';
for t=0:length(xi)-1
xi1(k)=xi(length(xi)-t);
Z2(k)=ytr2(length(xi)-t);
k=k+1;
end
fill([xi xi1],[ytr1 Z2],col{2},'EdgeColor',col{2},'FaceAlpha',0.1,'EdgeAlpha',0.3) % fill

最佳答案

五星知识达人网友：英雄的欲望
2021-02-11 22:34

你可以把Carl Edward Rasmussen高斯过程MATLAB工具包里的minimize函数，拷贝到你的文件夹里。

全部回答

1楼网友：骨子里都是戏
2021-02-12 00:25

minimize函数不是matlab中已有的函数，应先定义为自定义函数

2楼网友：纵马山川剑自提
2021-02-11 23:51

楼主高斯过程处理的怎么样了能不能交流一下我遇到的问题和你很相似

3楼网友：由着我着迷
2021-02-11 22:41

争议你可以把Carl Edward Rasmussen高斯过程MATLAB工具包里的minimize函数，拷贝到你的文件夹里。再看看别人怎么说的。

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