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%%%%%  load the data and forecast
%%%%%  it's not working.....
warning('off'); %#ok<WNOFF>
close all
clear
clc

load ttt

strip=12;
lenth=strip*200;
times=20;

err=zeros(times,strip);
rec_t=zeros(times,strip);
rec_tf=zeros(times,strip);
for time=1:times
    msg = sprintf('forecasting iteration %g/%g...\n',time,times);
    fprintf('%s',msg);
    signal=ttt(time:time+lenth-1); %%% lenth
   
    %%%%  strip data to predict 'strip+1' point
    in=zeros(strip,lenth-strip);
    for i=1:  (lenth-strip)
        in(:,i)=signal(i:i+strip-1);
    end
    tgt=signal(strip+1:lenth);
   
    in_f=signal(lenth-strip+1:lenth);
    in_f=reshape(in_f,strip,1);
   
    %%%%%%%%%%%%%% network %%%%%%%%%%%%%%%%
    net=newff(minmax(in),[strip*4,1],{'purelin','purelin'},'trainlm');
    net.trainParam.epochs=1000; %
    nettrainParam.goal=0.001; %
    [net,tr,Y,E]=train(net,in,tgt);
   
% %     %%%%%%%%%%%  chek the network %%%%%%%%%%%%%%%%
% %     out=sim(net,in);
% %     figure
% %     plot(reshape(tgt,1,strip*(cnt_strip-1)),'r-*');
% %     hold on
% %     plot(reshape(out,1,strip*(cnt_strip-1)),'b-d');
% %     legend('orignal','net(in)');
   
%     %%%%%%%%%%%%% prediction %%%%%%%%%%%%%%%
    out_f=sim(net,in_f);
   
    %%%%%%  record the series
    rec_t(time,1)=ttt(time+lenth);
    rec_tf(time,1)=out_f;
    err(time,1)=rec_tf(time,1)-rec_t(time,1);
end


figure;
plot(lenth+1:lenth+times,rec_t(:,1),'b-*');
hold on
plot(lenth+1:lenth+times,rec_tf(:,1),'r');
hold on
plot(lenth:lenth+times-1,rec_tf(:,1),'g-o');
legend('orignal','prediction','left-shifted');
title(strcat('pred == ',num2str(1,'%2.2d')));
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[ Last edited by gohomeba on 2014-3-6 at 10:04 ]
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  • 2014-03-06 10:04:01, 8.26 K

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gohomeba

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gohomeba

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gohomeba

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4Â¥2014-03-12 20:48:40
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gohomeba

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ÒýÓûØÌû:
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gohomeba

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