資源簡介
bp神經(jīng)網(wǎng)絡(luò)預(yù)測bp神經(jīng)網(wǎng)絡(luò)預(yù)測bp神經(jīng)網(wǎng)絡(luò)預(yù)測
代碼片段和文件信息
clc
%數(shù)據(jù)輸入
p=[370 503 434 575 490 420 560 640 558 343 326 405 446 423 422 697 598 377 435 472 451 667 601 689 541 485 425 389 382 707 422];
t=[515 713 586 753 720 567 717 987 810 489 453 589 639 568 595 982 849 519 615 652 599 941 893 999 758 701 630 561 520 1040?535];
%歸一化處理
p=(p-min(p))/(max(p)-min(p));
t=(t-min(t))/(max(t)-min(t));
%數(shù)據(jù)輸入2:網(wǎng)絡(luò)有關(guān)參數(shù)
EPOCHS=10000;
GOAL=0.000005;
%建立bp神經(jīng)網(wǎng)絡(luò),并訓(xùn)練,仿真。其中輸入為p,輸出為t
%-------------------------隱層神經(jīng)元確定-----------------------------
s=3:15;%s?為常向量,表示神經(jīng)元的個數(shù)
res=zeros(size(s));%res將要存儲誤差向量,這里先置零
pn=[p(1:5);p(6:10);p(11:15);p(16:20)];
tn=[t(1:5);t(6:10);t(11:15);t(16:20)];
for?i=1:length(s)???????????
????net=newff(minmax(pn)[s(i)4]{‘tansig‘‘purelin‘}‘trainlm‘);
????net.iw{11}=zeros(size(net.iw{11}))+0.5;
????net.lw{21}=
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????2346??2012-03-08?20:42??bp_huanghe.m
-----------?---------??----------?-----??----
?????????????????2346????????????????????1
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