lingo提示MODEL IS ILL DEFINED.

来源：学生作业帮编辑：灵鹊做题网作业帮分类：综合作业时间：2024/05/15 23:37:36

lingo提示MODEL IS ILL DEFINED.
model:
sets:
project/1..7/;
year/1..5/;
assignment(project,year):a,b,c,d,e,x;
endsets
data:
a=360,600,400,950,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0,
360,600,400,950,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0;
b=20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0;
c=30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1;
d=0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0;
e=1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0;
enddata
max=@sum(assignment:a(i,j)*x(i,j));
@sum(assignment:b(i,j)*x(i,j))

改成这样就行了
model:
sets:
project/1..7/;
year/1..5/;
assignment(project,year):a,b,c,d,e,x;
endsets
data:
a=360,600,400,950,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0,
360,600,400,950,10.5,6.8,7.0,
360,600,400,1350,10.5,6.8,7.0;
b=20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0,
20,35,10,100,0.6,1,0;
c=30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1,
30,75,40,50,0.3,0,1;
d=0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0,
0,0,0,400,3,0,0;
e=1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0,
1,1,1,1.5,0,0,0;
enddata
max=@sum(assignment(i,j):a(i,j)*x(i,j));
@sum(assignment(i,j):b(i,j)*x(i,j))
再问：能不能来个理论上的解释，以便以后不犯这类错误
再答：你自己对照一下我怎么改的就知道了你的问题就是用下标的时候不声明下标看我怎么声明的就行了

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