预测值与真实值差距很大，应该怎么修改???急

Question

load C:\Users\Song\Desktop\p.txt
load C:\Users\Song\Desktop\t.txt;
save p.mat;
save t.mat;
p=p;
t=t;
[p1,ps]=mapminmax(p);
[t1,ts]=mapminmax(t);
net=newff(minmax(p1),[6 1],{'tansig' 'purelin'},'traingdx');
net.trainParam.epochs=10000;
net.trainParam.goal=1e-7;
net.trainParam.lr=0.015;
net.trainParam.show=5;
[net,tr]=train(net,p1,t1);
pw=[15053 25663 36036;2901.07 3063.31 3153.44;1961.9 2018.6 2069.3;29073 32903 36469;19934 21984 24046;75573 83547 89778];
pwn=mapminmax(pw);
awn=sim(net,pwn);
aw=mapminmax('reverse',awn,ts);
下面是数据p
1754 3098 13767 12357 6982 9403 15053 25663 36036 12438
1473.29 1525.01 1719.87 1995.82 1908.74 2337.71 2901.07 3063.31 3153.44 3483.4
1492.7 1538 1601 1676 1771 1860 1961.9 2018.6 2069.3 2114.8
15637 17653 19978 21989 24725 26738 29073 32903 36469 40321
12200 13244 14825 15330 16460 17893 19934 21984 24046 26275
41809 47127 52964 61470 66098 68406 75573 83547 89778 97178
然后是t
4747 6162 7375 10661 11648 13224 17151 15517 16553 17854
想问问如何修改

Answer 1

oad C:\Users\Song\Desktop\p.txt
load C:\Users\Song\Desktop\t.txt;
save p.mat;
save t.mat;
p=p;
t=t;
[p1,ps]=mapminmax(p);
[t1,ts]=mapminmax(t);
[trainsample.p1,valsample.p1,testsample.p1] =dividerand(p1,0.7,0.15,0.15);
[trainsample.t1,valsample.t1,testsample.t1] =dividerand(t1,0.7,0.15,0.15);
net=newff(minmax(trainsample.p1),[6 1],{'tansig' 'purelin'},'trainlm');
net.trainParam.epochs=10000;
net.trainParam.goal=1e-7;
net.trainParam.lr=0.015;
net.trainParam.show=5;
[net,tr]=train(net,trainsample.p1,trainsample.t1);