大神们帮忙看下
小女子自学中，菜鸟一枚，看书上的程序就想敲敲看，但总是显示69和172 错误，到底怎么回事~换了各个版本的软件都是如此~求赐教~MODEL:
Title Location Prolem;
sets:
demand/1..6/:a,b,d;
supply/1..2/:x,y,e;
link(demand,supply):c;
endsets
data:
a=1.25,8.75,0.5,5.75,3,7.25;
b=1.25,0.75,4.75,5,6.5,7.75;
d=3,5,4,7,6,11;
e=20,20;
enddata
init:
x,y=5,1,2,7;
endinit
min=@sum(link(i,j):c(i,j)*(x(j)-a(i)^2+(y(j)-b(i))^2)^(1/2));
@for(demand(i):@sum(supply(j):c(i,j))=d(i););
@for(supply(i):@sum(demand(j):c(j,i))<e(i););
@for(supply:@free(X);@free(Y););
END 表情符号那儿是什么。{:3_42:} 妹子，给你改完了。
MODEL:
sets:
demand/1..6/:a,b,d;
supply/1,2/:x,y,e;
link(demand,supply):c;
endsets
data:
a=1.25,8.75,0.5,5.75,3,7.25;
b=1.25,0.75,4.75,5,6.5,7.75;
d=3,5,4,7,6,11;
e=20,20;
enddata
init:
x,y=5,1,2,7;
endinit
min=@sum(link(i,j):c(i,j)*((x(j)-a(i))^2+(y(j)-b(i))^2)^(1/2));
@for(demand(i):@sum(supply(j):c(i,j))=d(i));
@for(supply(i):@sum(demand(j):c(j,i))<=e(i));
@for(supply(i):@free(x);@free(y));
END 运行结果为：
Local optimal solution found.
Objective value: 85.26604
Infeasibilities: 0.000000
Total solver iterations: 68
Variable Value Reduced Cost
A( 1) 1.250000 0.000000
A( 2) 8.750000 0.000000
A( 3) 0.5000000 0.000000
A( 4) 5.750000 0.000000
A( 5) 3.000000 0.000000
A( 6) 7.250000 0.000000
B( 1) 1.250000 0.000000
B( 2) 0.7500000 0.000000
B( 3) 4.750000 0.000000
B( 4) 5.000000 0.000000
B( 5) 6.500000 0.000000
B( 6) 7.750000 0.000000
D( 1) 3.000000 0.000000
D( 2) 5.000000 0.000000
D( 3) 4.000000 0.000000
D( 4) 7.000000 0.000000
D( 5) 6.000000 0.000000
D( 6) 11.00000 0.000000
X( 1) 3.254883 0.000000
X( 2) 7.250000 -0.1853513E-05
Y( 1) 5.652332 0.000000
Y( 2) 7.750000 -0.1114154E-05
E( 1) 20.00000 0.000000
E( 2) 20.00000 0.000000
C( 1, 1) 3.000000 0.000000
C( 1, 2) 0.000000 4.008540
C( 2, 1) 0.000000 0.2051358
C( 2, 2) 5.000000 0.000000
C( 3, 1) 4.000000 0.000000
C( 3, 2) 0.000000 4.487750
C( 4, 1) 7.000000 0.000000
C( 4, 2) 0.000000 0.5535090
C( 5, 1) 6.000000 0.000000
C( 5, 2) 0.000000 3.544853
C( 6, 1) 0.000000 4.512336
C( 6, 2) 11.00000 0.000000
Row Slack or Surplus Dual Price
OBJ 85.26604 -1.000000
2 0.000000 -4.837363
3 0.000000 -7.158911
4 0.000000 -2.898893
5 0.000000 -2.578982
6 0.000000 -0.8851584
7 0.000000 0.000000
8 0.000000 0.000000
9 4.000000 0.000000
sorjor 发表于 2012-11-30 19:09 static/image/common/back.gif
运行结果为：
Local optimal solution found.
Objective value: 85.26 ...
谢谢哈，可是问题在哪里啊？我还是不太清楚，我按照你的把我的改了下还是报同样的错误，但你的却可以运行呢~~ 小汤姆兔 发表于 2012-12-3 11:02 static/image/common/back.gif
谢谢哈，可是问题在哪里啊？我还是不太清楚，我按照你的把我的改了下还是报同样的错误，但你的却可以运行 ...
三楼的程序是对的，你的的函数打错了吧？少了一层括号运算！
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