clcclear?
%讀取訓(xùn)練數(shù)據(jù)
[f1f2f3f4class]?=?textread（‘trainData.txt‘??‘%f%f%f%f%f‘150）;

%特征值歸一化
[inputminImaxI]?=?premnmx（?[f1??f2??f3??f4?]‘）??;

%構(gòu)造輸出矩陣
s?=?length（?class?）?;
output?=?zeros（?s??3??）?;
for?i?=?1?:?s?
???output（?i??class（?i?）??）?=?1?;
end

%創(chuàng)建神經(jīng)網(wǎng)絡(luò)
?net?=?newff（?minmax（input）??[10?3]??{?‘logsig‘?‘purelin‘?}??‘traingdx‘）?;?%舊版本
%?net?=?newff（?inputoutput‘?[10]??{?‘logsig‘?‘purelin‘?}??‘traingdx‘?）?;????%新版本
%?net.divideFcn?=?‘‘;


%設(shè)置訓(xùn)練參數(shù)
net.trainparam.show?=?50?;
net.trainparam.epochs?=?500?;
net.trainparam.goal?=?0.01?;
net.trainParam.lr?=?0.01?;

%開始訓(xùn)練
net?=?train（?net?input??output‘?）?;

%讀取測(cè)試數(shù)據(jù)
[t1?t2?t3?t4?c]?=?textread（‘testData.txt‘??‘%f%f%f%f%f‘150）;

%測(cè)試數(shù)據(jù)歸一化
testInput?=?tramnmx?（?[t1t2t3t4]‘??minI?maxI?）?;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1131??2017-03-27?15:11??BP神經(jīng)網(wǎng)絡(luò)例子\BP_Main.m
?????文件????????1349??2011-07-10?13:38??BP神經(jīng)網(wǎng)絡(luò)例子\testData.txt
?????文件????????2708??2011-07-10?13:42??BP神經(jīng)網(wǎng)絡(luò)例子\totalData.txt
?????文件????????1359??2011-07-10?13:39??BP神經(jīng)網(wǎng)絡(luò)例子\trainData.txt
?????目錄???????????0??2017-03-27?15:19??BP神經(jīng)網(wǎng)絡(luò)例子\