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P=[0.1093,0.1110,0.1127,0.1141,0.1154,0.1164,0.1171,0.1175,0.1178,0.1179,0.1179,0.1179,0.1179,0.1180,0.1182];. { h0 S4 h I5 M, Q
T=[0.1110,0.1127,0.1141,0.1154,0.1164,0.1171,0.1175,0.1178,0.1179,0.1179,0.1179,0.1179,0.1180,0.1182,0.1185]; ^7 o+ ^% p2 Q9 _
% 创建一个新的前向神经网络 ' n% P' n5 E1 r8 F0 I7 @
net_1=newff(minmax(P),[10,1],{'tansig','purelin'},'traingdm')
: P. b$ {2 c4 Z6 d1 d3 r/ I% 当前输入层权值和阈值* p/ g" l, K5 i$ |4 V8 [/ W
inputWeights=net_1.IW{1,1}
" j. B- `8 t" r9 einputbias=net_1.b{1}
# Z& F" R! F9 l$ E- b% 当前网络层权值和阈值
+ F* D" z/ T9 {) rlayerWeights=net_1.LW{2,1}
4 x- O4 R" ^5 ]. `, Llayerbias=net_1.b{2} ?% E- I3 K1 f' H- X- p& m* m
% 设置训练参数3 ]/ k7 R9 X1 m \8 I1 S
net_1.trainParam.show = 50;
% l. A: X& j2 l/ Dnet_1.trainParam.lr = 0.05;
/ ^* `( ?. `. ~/ l5 q( F1 ~; S# Q. u: Mnet_1.trainParam.mc = 0.9;
5 k# Z) T! m0 Q% E- q1 z: Snet_1.trainParam.epochs = 10000;6 Y. H! C$ G' i9 w8 |1 F! W1 N
net_1.trainParam.goal = 1e-3;
$ [& t7 l! g2 x5 V' C* x" ~6 s8 j% 调用 TRAINGDM 算法训练 BP 网络
* Y6 U# X6 F" r* B[net_1,tr]=train(net_1,P,T);+ f0 M5 Y/ q3 c$ z
% 对 BP 网络进行仿真
$ j! N$ q: \" P0 r/ a+ rA = sim(net_1,P);' F8 r! u8 ?1 Y( X/ ?
% 计算仿真误差
8 g/ h" W. @7 e4 o5 R' {; O# w5 r* sE = T - A;6 e3 Z$ q$ L# s8 Z' H- F+ _
MSE=mse(E)
J: `. [! s0 T& _5 tx=[0.1110,0.1127,0.1141,0.1154,0.1164,0.1171,0.1175,0.1178,0.1179,0.1179,0.1179,0.1179,0.1180,0.1182,0.1185]';%测试0 k! m: T- E7 o x, j* Y! |, E+ ?, b
sim(net_1,x)
0 P$ t0 q3 F0 @& N/ [这段程序是根据14年的数据,来预测下一年的,怎么算不出来啊 。
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