e5_2_1.m

bp神经网络识别数字

% Example52Tr
clear all;
load E52PT p t;    % 加载训练样本集（输入向量和目标向量）
% 创建BP网
pr(1:256,1)=0;
pr(1:256,2)=1;
net= newff(pr,[25 1],{'logsig','purelin'},'traingdx','learngdm');
% 设置训练参数和训练BP网络
net.trainParam.epochs = 2500;
net.trainParam.goal= 0.001;
net.trainParam.show = 10;
net.trainParam.lr=0.05;
net= train(net,p,t);
% 存储训练后的BP网络
save E52net net;