I have a model:

int I=5;

int J=5;

int L=2;

int omiga=100;

int f[1..L]=[7,7];

int M[1..L]=[5,2];

int q11[1..I][1..J]=[[0,24000,15000,31000,11000],

[0,0,18000,20500,13000],

[0,0,0,25000,23500],

[0,0,0,0,11000],

[0,0,0,0,0]];

float t[1..I][1..J][1..L]=[[[0,6.22,10.37,13.48,15.56],

[0,0,4.15,7.26,9.33],

[0,0,0,3.11,5.19],

[0,0,0,0,2.08],

[0,0,0,0,0]],

[[0,5,13,19,22],

[0,0,8,11,17],

[0,0,0,7,9],

[0,0,0,0,2],

[0,0,0,0,0]]];

float gt[1..I][1..J][1..L]=[[[0,1,1,1,1],

[0,0,1,1,1],

[0,0,0,1,1],

[0,0,0,0,1],

[0,0,0,0,0]],

[[0,1,1,1,1],

[0,0,1,1,1],

[0,0,0,1,1],

[0,0,0,0,1],

[0,0,0,0,0]]];

dvar float q[1..I][1..J][1..L];

minimize sum(i in 1..I,j in 1..J,l in 1..L)(gt[i][j][l]*(omiga/(2*f[l])+omiga*t[i][j][l])*q[i][j][l]

-gt[i][j][l]*M[l]*q[i][j][l]);

subject to{

forall(i in 1..I,j in 1..J)sum(l in 1..L)q[i][j][l]==q11[i][j];

}

In my original model,gt[1..I][1..J][1..L]=sgn(t[1..I][1..J][1..L]).

The function sgn(x):

if x>0,sgn(x)=1;if x=0,sgn(x)=0;if x<0,sgn(x)=-1.

And I think this model is a linear model,because the gt[1..I][1..J][1..L]

is a parameter,I can calculate it through sgn(t[1..I][1..J][1..L]) in advance.

So gt[1..I][1..J][1..L] is a 0-1 matrix,not a decision variable.

But when I run this model,it shows that the gt[1..I][1..J][1..L] is wrong.

I don't konw why.Can someone help me.

Thank you verymuch.

Dear 201830610051,

When running your model with oplrun using CPLEX Studio 12.9 I get:

<<< setup

*** ERROR[GENERATE_136] at 43:28-61:14 model.mod: Size mismatch between maps: "gt(1)(1)" with size 2 and "" with size 5.

*** ERROR[GENERATE_209] at 43:28-61:14 model.mod: Invalid initialization expression for element "gt".

*** ERROR[GENERATE_210] at 65:45-47 model.mod: Element "gt" is not available, see previous error(s).

<<< generate

Which indicates a problem with the way the 'gt' array is initialized. There clearly is a mismatch between index order and the initialization.

Cheers,