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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];
- Y* m& ] H4 ]6 u' P4 vT=[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];
* B! V: c8 [( G% 创建一个新的前向神经网络 ! T& Y! |. f, Z- \' `3 C
net_1=newff(minmax(P),[10,1],{'tansig','purelin'},'traingdm')* N q) H, b R, T) H/ [! a
% 当前输入层权值和阈值
+ s7 [ h; m6 r, C. HinputWeights=net_1.IW{1,1}
/ k. u5 K p6 ^2 Y3 z" q ]inputbias=net_1.b{1}
# G! [. t, d4 K0 c% 当前网络层权值和阈值$ \ F* _0 t! d& h% E5 o# D+ @
layerWeights=net_1.LW{2,1} h$ A* R% `3 K% B/ ~
layerbias=net_1.b{2}
3 Q& D/ M: Y9 H5 ^5 Z) t" r) V y% 设置训练参数
; a4 ]. Z% ]/ r3 Snet_1.trainParam.show = 50;
" Q x9 u5 _: @" ~. Vnet_1.trainParam.lr = 0.05;
9 p' J8 |; {% [6 ]" M$ z/ ]& P* Unet_1.trainParam.mc = 0.9;3 \9 V+ a; v6 z" p0 R9 j. a
net_1.trainParam.epochs = 10000;% r2 H5 ] N- P5 d% |- |3 E* ] u
net_1.trainParam.goal = 1e-3;
" h6 m1 J4 }8 Q/ i/ q: |- K* b% 调用 TRAINGDM 算法训练 BP 网络) p' g( V, M( @9 {" N% W# v3 O5 H
[net_1,tr]=train(net_1,P,T);
. ~9 @) F& }1 t, s X; q& \% 对 BP 网络进行仿真
$ `+ I. Z( P% y1 FA = sim(net_1,P);) R8 O9 m1 N! G7 m j+ k' ?
% 计算仿真误差 , M0 |% M' v8 {' O5 p6 P* Q
E = T - A;& {0 g l$ R, O8 {, x- c" l( S
MSE=mse(E)( ?; E2 m7 b: V! y: X
x=[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! c, E \/ b5 p3 ?$ W8 A! A
sim(net_1,x) ! c$ L% }0 c+ _1 `& p- a3 v$ j
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 。0 D2 ]8 B( x: ^2 C5 I$ i
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