LINGO ERROR CODE 是1017 我写的代码如下MODEL:1] min = 0.5*CP*(Q*(1-D/P)-S)^2/(Q*(1-D/P))2] +CD*D/Q+0.5*CS*S^2/(Q*(1-D/P));3] T1=(Q*(1-D/P)-S)/(P-D)*365;4] T2=(Q*(1-D/P)-S)/D*365;5] T3=S/D*365;6] T4=S/(P-D)*365;7] T= T1+T2+T3+T4;8] data;9] CD=50010] D=490011] CP=100012] P=980013] CS=2000;14] enddataEND
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【答案】 出现1017code说明你的lingo版本有问题.
另外有一些错误.
修改后如下
MODEL:
min = 0.5*C_P*(Q*(1-D/P)-S)^2/(Q*(1-D/P))+C_D*D/Q+0.5*C_S*S^2/(Q*(1-D/P));
T1=(Q*(1-D/P)-S)/(P-D)*365;
T2=(Q*(1-D/P)-S)/D*365;
T3=S/D*365;
T4=S/(P-D)*365;
T= T1+T2+T3+T4;
data:
C_D=500;
D=4900;
C_P=1000;
P=9800;
C_S=2000;
enddata
END
运行结果：
Local optimal solution found.
Objective value:40414.52
Total solver iterations:4
Variable Value Reduced Cost
C_P 1000.000 0.000000
Q 121.2436 0.000000
D 4900.000 0.000000
P 9800.000 0.000000
S 20.20726 0.000000
C_D 500.0000 0.000000
C_S 2000.000 0.000000
T1 3.010469 -0.1032174E-07
T2 3.010469 0.000000
T3 1.505235 -0.3807276E-07
T4 1.505235 0.000000
T 9.031408 0.000000
Row Slack or Surplus Dual Price
1 40414.52 -1.000000
2 0.000000 0.000000
3 0.000000 0.000000
4 0.000000 0.000000
5 0.000000 0.000000
6 0.000000 0.000000