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ÌìÌì220

гæ (³õÈëÎÄ̳)

[ÇóÖú] ÇóÖúmatlab³ÌÐòµ÷ÊÔ

% ex4_5.m
W1=[.7771;-.5336;-.3874; -.2980;.0265];
B1=[.1822;.6920;-.1758;.6830;-.4614];
W2=[-.1692 .0746 -.0642 -.4256 -.6433];  B2=[-.6926];
% train the network: parameters
err_goal=0.15;
lr=0.01;
P=1:15;  % 0.1Ö¨¢1.5•Ö¡Àe¡À¨ª¨º¾2009Ĩº3ÔÂÖ¨¢2010Ĩº5Ô  %2012.12.26DT¸Ä
T=[4096683
5247533
6818505
7892501
8766402
10856837
11644508
13478027
14927435
16621797
19560000
22380000
25907569
31419048
39600819
]';
hold on
figure (1)
plot(P,T,'*')    % ¡ä¨°¨®¡Ô-¨º¼¨¦¡é¦Ì㨪¼
A1=tansig(W1*P,B1); A2=purelin(W2*A1,B2);
E=T-A2;
SSE=sumsqr(E);errors=[SSE];
max_epoch=6000;
for epoch=1:max_epoch
     if SSE      % learning phase
     D2=deltalin(A2,E),  D1=deltatan(A1,D2,W2);
     [dW1,dB1]=learnbp(P,D1,lr); [dW2,dB2]=learnbp(A1,D2,lr);
     W1=W1+dW1, B1=B1+dB1;  W2=W2+dW2, B2=B2+dB2;
     A1=tansig(W1*P,B1),  A2=purelin(W2*A1,B2);
     E=T-A2;
     SSE=sumsqr(E);
     errors=[errors SSE];
end
plot(P,purelin(W2*tansig(W1*P,B1),B2)); % ¡ä¨°¨®¡ÄaoÏǨ²Ïß
hold off
figure (2)
ploterr(errors); % ¡ä¨°¨®¡Î¨®2îǨ²Ïß
% Ϩ²¨ºÛÔ¡è2a
P1=16;
T1=purelin(W2*tansig(W1*P1,B1),B2);
fprintf('\n 2009Ĩº¨¦¨²2¨²¡Á¨¹Ö¦ÌÎa:%d',T1)


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csgt0

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dbb627: ½ð±Ò+1, ¸Ðлָµ¼ 2013-01-10 09:13:56
deltalin
deltatan
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showmethemoney
2Â¥2013-01-09 16:23:39
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ÌìÌì220

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ÒýÓûØÌû:
2Â¥: Originally posted by csgt0 at 2013-01-09 16:23:39
deltalin
deltatan
ÓÐÕâ¸öº¯ÊýÂð£¿

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3Â¥2013-01-09 16:34:02
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csgt0

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ÌìÌì220: ½ð±Ò+5 2013-01-11 18:19:46
ÒýÓûØÌû:
3Â¥: Originally posted by ÌìÌì220 at 2013-01-09 16:34:02
ÄÇÓ¦¸ÃÊÇʲô   Õâ¸öÊÇBPÉñ¾­ÍøÂçµÄÔ¤²â   ÇëÄú°ïæ¿´¿´¹þ  Ð»Ð»...

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showmethemoney
4Â¥2013-01-09 16:50:44
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ÌìÌì220

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by csgt0 at 2013-01-09 16:50:44
ÕâÁ½¸ö²»ÊÇϵͳº¯Êý£¬Ó¦¸ÃÊÇ×Ô¼º±àµÄº¯Êý£¬¿´ÄãÕâÊǸöÀý×Ó£¬Äã¿´¿´ÉÏÏÂÎÄÊDz»ÊÇÓÐ˵Õâ¸öº¯Êý...

ÇëÎÊÄúQQ¶àÉÙ  ÎÒÏëÇë½ÌÄú   ÕæµÄºÜ׿±
5Â¥2013-01-09 16:53:00
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connors

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dbb627: ½ð±Ò+1, »¶Ó­½»Á÷ 2013-01-10 09:13:41
ÌìÌì220: ½ð±Ò+5 2013-01-11 18:19:52
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