lingo选址优化问题

葳蓝

file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.gif
file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.giffile:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.gif，






file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.gif
其中sij为生产基地i到销售点j的路程，xij表示生产基地到销售点的运送量，bj表示销售点的销售量，ai为生产基地的生产量其中sij已知为

madio

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葳蓝

madio 发表于 2013-8-21 21:24
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我郁闷呀

百年孤独

葳蓝 发表于 2013-8-21 21:28
我郁闷呀

看这里看这里～～

葳蓝

百年孤独 发表于 2013-8-21 21:45
看这里看这里～～

MODEL:
sets:
demand/1..40/:a,b,d;     
supply/1..154/:x,y,g;
link(demand,supply):c;
endsets
data:
!locations for the demand(需求点的位置);
a=137.5,284,295,362,410,167,400,420,376,374,365,358,354,359,333,318,299,305,275,276,270,276,296,262,282,135,138.5,167,194,212,252,251.5,240,241,235,235.5,206,193.5,192,167;
b=462,409,382,443,408.5,462,443,447,401,424,406,448,495,528,511,459,434,457,422,419,415,405,387,399,398.5,395,442,442,442,443,458,477,495,514,496,486.5,466,475,507,495.5;
x=137.5,167,376,210,263,284,278.5,295,299,362,410,395,277,235,200,167,225,400,414,424,411,420,403,376,380,377,374,370,368,374,365,356,358,354,357,359,347,261,270,313,324,333,334,323,312,317,316,315.5,316,318,291.5,284,281,299,302,305,281,274,273.5,267,270,275,276,270,276,288,293.5,296,303,298.5,293,296,276,250,247,262,269,276,282,282,273,276,138.5,155,163,173,183,238,213,189,210,201,150,135,143,142,140,121,109,138.5,167,168,184,194,200,212,220,246,246,252,257,255.5,249,247,254,251.5,259,261,255,240,241,236,235,232,235.5,245,225,225,219,219,228.5,213,211,208.5,206,206,200,200,200,200,206,194,184,184,193.5,193,184,184,192.5,192,192,170,168,167;
y=462,399,400,390,445,409,425,382,444,443,408.5,520,496,465,466.5,462,443,447,422,400,396,401,404,406,404,424,424,423,427.5,431,448,450,459,495,513,528,553,537.5,514,511.5,511,511,497,497,498,451,448,444,434,412,415,425,421,434,451,457,458.5,448,444,446,440,422,419,415,405,403,392.5,387,386,378,376,372,352,350,384,399,397,402,398.5,386.5,389,361,378,396,390,364,370,382,412,413,433,434,400,395,407,414,430,432,441,442,442,435,440,442,442,443,443,444,455,458,460.5,466,464,469,472,477,478,470,494,495,514,514,496,487,486.5,474,457.5,451,451,462,472,481,487,496,507,515,514,507,497,484,466,466,463.5,475,475,484,484,496.5,496.5,507,514,516.5,507,495.5;
!quantities of the demand and supply（供需量）;
d=47.1808,40.415,27.4918,35.406,19.5296,31.3271,20.673,20.4,10.4032,9.265,59.012,55.4741,0.451,11.503,9.489,20.3046,0.5412,11.459,5.3302,100.2958,23.9197,40.8982,23.0535,46.489,64.6251,12.773,7.0355,25.122,21.9095,57.8005,5.1346,21.2085,121.5031,20.478,60.441,22.389,29.64,133.8004,45.37,29.0107;
enddata
init:
!initial locations for the supply（初始点）;
x=137.5,167,376,210,263,284,278.5,295,299,362,410,395,277,235,200,167,225,400,414,424,411,420,403,376,380,377,374,370,368,374,365,356,358,354,357,359,347,261,270,313,324,333,334,323,312,317,316,315.5,316,318,291.5,284,281,299,302,305,281,274,273.5,267,270,275,276,270,276,288,293.5,296,303,298.5,293,296,276,250,247,262,269,276,282,282,273,276,138.5,155,163,173,183,238,213,189,210,201,150,135,143,142,140,121,109,138.5,167,168,184,194,200,212,220,246,246,252,257,255.5,249,247,254,251.5,259,261,255,240,241,236,235,232,235.5,245,225,225,219,219,228.5,213,211,208.5,206,206,200,200,200,200,206,194,184,184,193.5,193,184,184,192.5,192,192,170,168,167;
y=462,399,400,390,445,409,425,382,444,443,408.5,520,496,465,466.5,462,443,447,422,400,396,401,404,406,404,424,424,423,427.5,431,448,450,459,495,513,528,553,537.5,514,511.5,511,511,497,497,498,451,448,444,434,412,415,425,421,434,451,457,458.5,448,444,446,440,422,419,415,405,403,392.5,387,386,378,376,372,352,350,384,399,397,402,398.5,386.5,389,361,378,396,390,364,370,382,412,413,433,434,400,395,407,414,430,432,441,442,442,435,440,442,442,443,443,444,455,458,460.5,466,464,469,472,477,478,470,494,495,514,514,496,487,486.5,474,457.5,451,451,462,472,481,487,496,507,515,514,507,497,484,466,466,463.5,475,475,484,484,496.5,496.5,507,514,516.5,507,495.5;
endinit
!Objective function（目标）;
[OBJ] min=@sum(link(i,j): c(i,j)*((x(j)-a(i))^2+(y(j)-b(i))^2)^(1/2)*(0.5));
@for(link(i,j):[DED_CON] @if(c(i,j)#GE#250,g(j)=1,g(j)=0));
!demand constraints（需求约束）;
@for(demand(i):[DEMAND_CON] @sum(supply(j):c(i,j)) =d(i););
!supply constraints（供应约束）;
@for(supply(i):[SUPPLY_CON] @sum(demand(j):c(j,i)) >=250;);
!@for(supply: @free(x); !@free(Y); !);
@for(supply: @bnd(135,X,420); @bnd(382,Y,528); );
@for(supply(j):@bin(g(j)));
END
这个代码错在哪了

葳蓝

百年孤独 发表于 2013-8-21 21:45
看这里看这里～～

我是用公式编辑器编辑出来的，怎么是图片了…………

百年孤独

葳蓝 发表于 2013-8-22 12:33
我是用公式编辑器编辑出来的，怎么是图片了…………

我没明白你的意思~

kanglongwuhui

应该用集合的，你这么多数，眼睛容易看花。。。