clc;clearall %情况变量环境[xdata,textdata]=xlsread('exp12_4_2.xls');%读取货运量数据[n,m]=size(xdata);Train_Num=20; %输入样本数量为20Test_Num=Train_Num; %测试样本数量也是20Sim_Num=2; %预测样本数量为6%提取输入Input和输出Output数据Input=[xdata(1:Train_Num,3)xdata(1:Train_Num,4)xdata(1:Train_Num,5)xdata(1:Train_Num,6)xdata(1:Train_Num,7)]';Output=xdata(1:Train_Num,2)';%%%数据归一化处理[Inputn,In_ps]=mapminmax(Input,0,1); %输入数据归一化[Outputn,Out_ps]=mapminmax(Output,0,1); %输出数据归一化Train_Input=Inputn(:,1:Train_Num); %训练数据输入Test_Input=Train_Input; %测试数据输入<