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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];5 T9 @& j$ z# Q# K
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];- I' o+ Z1 X P: h# P
% 创建一个新的前向神经网络
1 G) L" S5 f# H+ @' `: ~) Hnet_1=newff(minmax(P),[10,1],{'tansig','purelin'},'traingdm')
2 j$ X- n* F' \! E8 J4 z% 当前输入层权值和阈值
0 B: H! z" ?$ ~1 ^* ^! u z2 dinputWeights=net_1.IW{1,1}
" L- L# l: h7 Z! B3 P3 [7 oinputbias=net_1.b{1}2 v! J5 m' j0 A- a
% 当前网络层权值和阈值
$ u1 U% y6 {( k5 h, OlayerWeights=net_1.LW{2,1}% c" o; n. E. D* U; L
layerbias=net_1.b{2}
% |9 f( d3 f" X/ {% 设置训练参数
* A0 m1 k0 s4 P M8 l+ P' Z; Rnet_1.trainParam.show = 50;6 |% H+ \! v9 T% N! T
net_1.trainParam.lr = 0.05;
+ v! X% _0 P, o: V1 B8 Onet_1.trainParam.mc = 0.9;" F& O/ W6 P( A
net_1.trainParam.epochs = 10000;
+ @& E, K/ j+ y) onet_1.trainParam.goal = 1e-3;. P0 D( c. h2 J2 a
% 调用 TRAINGDM 算法训练 BP 网络7 f- e7 G4 X9 s1 ]
[net_1,tr]=train(net_1,P,T);
& S3 P; }7 |- Z$ Y% 对 BP 网络进行仿真
N# ?5 Z7 r6 r/ H! ~7 xA = sim(net_1,P);# T0 t4 N- I% y0 ?9 ]' O
% 计算仿真误差
4 p3 J. X1 ^( aE = T - A;
% X: f1 x; K+ zMSE=mse(E)
( [* d; s: {# S7 Y' ^& nx=[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! D, Q( w1 _# v
sim(net_1,x) 2 u% \; G4 l) E5 N: W$ L/ H
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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