Originally posted by: pieterce

Hi everyone

I have programmed my IP in CPLEX and wanted to include the non-anticipativity constraints for certain scenarios at certain time periods. However, it does not yield the desired result as for some reason my decision variables (DV = dvar int+ Q[I][T][S];) are zero while they should be equal to the other decision variables' values.

My code looks like this:

 forall (i in I, t in 1..3)
     {
           Q[i][t][1] == Q[i][t][2] == Q[i][t][3] == Q[i][t][4] == Q[i][t][5];   
           Q[i][t][6] == Q[i][t][7] == Q[i][t][8] == Q[i][t][9] == Q[i][t][10];  
           Q[i][t][11] == Q[i][t][12] == Q[i][t][13] == Q[i][t][14] == Q[i][t][15];  
           Q[i][t][16] == Q[i][t][17] == Q[i][t][18] == Q[i][t][19] == Q[i][t][20];  
           Q[i][t][21] == Q[i][t][22] == Q[i][t][23] == Q[i][t][24] == Q[i][t][25];    
     }

but my output at time t=1 is like this: [5 5 5 5 0 5 5 5 5 0 5 5 5 5 0 5 5 5 5 0 5 5 5 5 0] for every i

I don't understand why there are zeros at s=5, s= 10, s=15, s=20 and s=25 while I request them to be equal to value for the other s (5 in this case).

Anyone has any idea of why this happens? Looking forward to hearing back from you soon!

Kindest regards

Pieter

Hi

instead of

Q[i][t][1] == Q[i][t][2] == Q[i][t][3] == Q[i][t][4] == Q[i][t][5];   

can you write 4 equality constraints such as

Q[i][t][1] == Q[i][t][2]

Q[i][t][2] == Q[i][t][3]

and so on

regards