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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];- _' {: Y1 |2 ~ W3 B4 {! E
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];
' R: G0 v. [9 J8 u$ X0 v% 创建一个新的前向神经网络 O5 s) w) w5 C6 L
net_1=newff(minmax(P),[10,1],{'tansig','purelin'},'traingdm'), Q- Z- V9 I# x$ c- R2 ^
% 当前输入层权值和阈值
( `# K! {4 Q' U ^. SinputWeights=net_1.IW{1,1}5 n* w+ V m7 W9 Q3 x6 A) [
inputbias=net_1.b{1}4 L- M4 U- L2 s3 g% V; m
% 当前网络层权值和阈值
' ~: C/ \* M% v, J& _layerWeights=net_1.LW{2,1}' U" B8 ]# { J0 H' ~4 b
layerbias=net_1.b{2}
4 N2 {) ^. Z q, k+ T0 q# A% 设置训练参数& \$ Q9 Q4 O7 i
net_1.trainParam.show = 50;
* |" {3 E, l0 znet_1.trainParam.lr = 0.05;: z4 @% _4 U$ z/ t. Z/ ~
net_1.trainParam.mc = 0.9;
0 X. X' B& c3 ?: Knet_1.trainParam.epochs = 10000;7 q4 R0 P+ d( L9 W v0 L' ^
net_1.trainParam.goal = 1e-3;2 q3 Q$ D* b6 D9 d: }
% 调用 TRAINGDM 算法训练 BP 网络
( E4 o3 J/ \& K* r V' U+ f[net_1,tr]=train(net_1,P,T);0 K4 T, o( z/ F; G0 M
% 对 BP 网络进行仿真1 B T) H" O) K$ m+ Y* b6 B
A = sim(net_1,P);# O' ]' e" i6 t/ [& N% B
% 计算仿真误差
9 v; g5 ?9 D- x" q# OE = T - A;: H v* I3 T: d* U) u% F
MSE=mse(E)" v1 n z; a8 ^* I
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3 K" G3 a% B$ I }5 x
sim(net_1,x) - n5 J3 _5 |3 G' B2 j4 r8 s
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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