BP神经网络预测MATLAB源代码

% 生成训练样本集
clear all;
clc;

P=[1163.76	60.00	54.00	162.24;
1083.60	145.00	22.00	189.40;
1139.60	80.00	62.00	158.40;
1212.40	59.00	82.00	86.60;
1126.40	50.00	35.00	228.60;
1041.60	59.00	7.00	332.40;
1105.28	168.00	0.00	166.72;
1139.84	77.00	0.00	223.16;
1107.68	209.00	0.00	123.32;
1056.00	119.00	7.00	258.00;
1132.80	81.00	24.00	202.20;
1235.20	61.00	4.00	139.80;
1288.00	68.00	5.00	79.00;
1120.00	35.00	123.00	162.00;
1029.39	85.00	84.00	241.61;
988.53	90.00	253.00	108.47;
971.20	59.00	335.00	74.80;
1008.00	55.00	349.00	28.00;
991.28	106.00	316.00	26.72;
941.22	131.00	208.00	159.78;
1251.60	84.00	16.00	88.40;
1183.00	97.00	76.00	84.00;
1122.52	135.00	20.00	162.48;
1318.80	51.00	0.00	70.20;
226.76	239.00	8.00	6.24;
182.50	500.00	16.00	261.50;
995.56	131.00	43.00	27