lingo代码哪里错，急！

Question

lingo代码哪里错，急！model:

sets:
dat/1..4/:w,z;
num/1..11/:y,a,b,c,d;
link(num,dat):e,m;
endsets

data:
w=15,60,90,30;
m=67.9,1,1.02,1,
61.9,1,1,1,
70.11,1,0.87,1,
75.15,0,0.07,1,
71.78,0,0.87,1,
74.54,1,1.46,1,
79.22,0,1.56,1,
75.59,1,1.26,2,
65.49,1,1.03,3,
67.65,1,0.88,4,
43.89,1,0.95,4;
enddata
min=@sum(link:e*w);
y=@if(d#eq#1:y1,@if(d#eq#2:y2,@if(d#eq#3:y3,y4)));
y1=0.027*a+0.151*b+0.021*c-0.755;
y2=0.012*a+0.099*b-0.462*c+1.266;
y3=0.005*a+0.24*b+0.455*c+0.535;
y4=-0.007*a+0.377*b+0.454*c+1.153;
@for(num(i):a(i)=m(i,1)+e(i,1));
@for(num(i):b(i)=m(i,2)+e(i,2));
@for(num(i):c(i)=m(i,3)+e(i,3));
@for(num(i):d(i)=m(i,4)+e(i,4));
y>=0.5;
@gin(e(i,4));@gin(e(i,2);
end

Answer 1

sets:
dat/1..4/:w,z;
num/1..11/:y,a,b,c,d;
link(num,dat):e,m;
endsets
min=@sum(link:e*w);
这里的w是定义为dat型的

追问

那应该怎么写目标函数代码

追答

我怎么知道你需要做什么
如果需要帮助请给原题