Decision Optimization

Dear Mathis,

Could you please share a minimal model that would allow us (with some luck) to reproduce the problem?

Could you also please share a screen dump showing the problem?

Cheers,

Dear Renaud

There is my model (model1), it is a facility location problem to minimize cost :

{string} Cities = ...;
int Fixed[Cities] = ...;
int Demand[Cities] = ...;
float SupplyCost[Cities][Cities] = ...;

dvar boolean y[Cities]; //1 if there is a facility in tthe city
dvar boolean x[Cities][Cities]; //1 if city i is provided by facility  in city  j

dexpr float

Objective = sum(j in Cities) Fixed[j]*y[j] + sum(i in Cities, j in Cities) 0.35*Demand[i]*x[i][j]*SupplyCost[i][j]; 
    
minimize Objective;
  
subject to{
  
  forall (i in Cities) sum(j in Cities) x[i][j]==1; //One facility providing a city
  
  forall (i in Cities, j in Cities) x[i][j]<= y[j]; //Provided by city where there is a facility

}

execute DISPLAY_RESULTS{
writeln("Objective = ",Objective);
  for (var j in Cities)
  {
    if (y[j]==1)
    {
        write("  ", j);
    }        
}    
writeln;

for (var j in Cities)
  {
    if (y[j]==1)
    {
      writeln();
      write("  ", j, " delivers to: ");
        for (var i in Cities)
      {
        if (x[i][j]==1)
        {
          write("  ",i);
         }
   }
   writeln();
 }

}  
                 
}

And Data:

/NbCities=12;
Cities = {A,B,C,D,E,F,G,H,I,J,K,L};
//Capacity = 99999;
//MaxDistance = 9999;
//MaxDepots = 9999;
Fixed = [100 200 130 150 225    175    190    210    165    230    125    215 ];
Demand = [15 10    12    18    5    24    11    16    13    22    19    20 ];
SupplyCost = [
[ 0        15    37    55    24    60    18    33    48    40    58    67  ]
[ 15    0    22    40    38    52    33    48    42    55    61    61  ]
[ 37    22    0    18    16    30    41    28    20    39    58    39  ]
[ 55    40    18    0    34    12    69    46    24    62    43    34  ]
[ 24    38    16    34    0    36    25    12    24    47    37    43  ]
[ 60    52    30    12    36    0    57    42    12    50    31    22  ] 
[ 18    33    41    69    25    57    0    15    45    22    41    61  ]
[ 33    48    28    46    12    42    15    0    30    37    25    46  ]
[ 48    42    20    24    24    12    45    30    0    38    19    19  ]
[ 40    55    39    62    47    50    22    37    38    0    19    40  ]
[ 58    61    58    43    37    31    41    25    19    19    0    21  ]
[ 67    61    39    34    43    22    61    46    19    40    21    0  ]
];

And there is a screen dump of ILOG when i try to run my configuration with data (donnee1) that are on the screen. I hope this is clear .

Thank you!

Dear Mathis,

Could you please share a minimal model that would allow us (with some luck) to reproduce the problem?

Could you also please share a screen dump showing the problem?

Cheers,

Dear Mathis,

We cannot reproduce your problem so could you please provide us with a tarball or zip archive containing this project configuration file as well (files with names starting with '.' in the project directory). Maybe they are corrupted.

Cheers,

Dear Renaud

There is my model (model1), it is a facility location problem to minimize cost :

{string} Cities = ...;
int Fixed[Cities] = ...;
int Demand[Cities] = ...;
float SupplyCost[Cities][Cities] = ...;

dvar boolean y[Cities]; //1 if there is a facility in tthe city
dvar boolean x[Cities][Cities]; //1 if city i is provided by facility  in city  j

dexpr float

Objective = sum(j in Cities) Fixed[j]*y[j] + sum(i in Cities, j in Cities) 0.35*Demand[i]*x[i][j]*SupplyCost[i][j]; 
    
minimize Objective;
  
subject to{
  
  forall (i in Cities) sum(j in Cities) x[i][j]==1; //One facility providing a city
  
  forall (i in Cities, j in Cities) x[i][j]<= y[j]; //Provided by city where there is a facility

}

execute DISPLAY_RESULTS{
writeln("Objective = ",Objective);
  for (var j in Cities)
  {
    if (y[j]==1)
    {
        write("  ", j);
    }        
}    
writeln;

for (var j in Cities)
  {
    if (y[j]==1)
    {
      writeln();
      write("  ", j, " delivers to: ");
        for (var i in Cities)
      {
        if (x[i][j]==1)
        {
          write("  ",i);
         }
   }
   writeln();
 }

}  
                 
}

And Data:

/NbCities=12;
Cities = {A,B,C,D,E,F,G,H,I,J,K,L};
//Capacity = 99999;
//MaxDistance = 9999;
//MaxDepots = 9999;
Fixed = [100 200 130 150 225    175    190    210    165    230    125    215 ];
Demand = [15 10    12    18    5    24    11    16    13    22    19    20 ];
SupplyCost = [
[ 0        15    37    55    24    60    18    33    48    40    58    67  ]
[ 15    0    22    40    38    52    33    48    42    55    61    61  ]
[ 37    22    0    18    16    30    41    28    20    39    58    39  ]
[ 55    40    18    0    34    12    69    46    24    62    43    34  ]
[ 24    38    16    34    0    36    25    12    24    47    37    43  ]
[ 60    52    30    12    36    0    57    42    12    50    31    22  ] 
[ 18    33    41    69    25    57    0    15    45    22    41    61  ]
[ 33    48    28    46    12    42    15    0    30    37    25    46  ]
[ 48    42    20    24    24    12    45    30    0    38    19    19  ]
[ 40    55    39    62    47    50    22    37    38    0    19    40  ]
[ 58    61    58    43    37    31    41    25    19    19    0    21  ]
[ 67    61    39    34    43    22    61    46    19    40    21    0  ]
];

And there is a screen dump of ILOG when i try to run my configuration with data (donnee1) that are on the screen. I hope this is clear .

Thank you!

Dear Mathis,

Could you please share a minimal model that would allow us (with some luck) to reproduce the problem?

Could you also please share a screen dump showing the problem?

Cheers,

Dear Renaud,

Here is the archive of the project: https://www.dropbox.com/s/dv20wlv61g5j4pj/HubLocation.zip?dl=0

It works on my colleague's  computer, i guess there is something wrong in my Cplex settings but i donwloaded it with the same process than him. 

Cheers,

Dear Mathis,

We cannot reproduce your problem so could you please provide us with a tarball or zip archive containing this project configuration file as well (files with names starting with '.' in the project directory). Maybe they are corrupted.

Cheers,

Dear Renaud

There is my model (model1), it is a facility location problem to minimize cost :

{string} Cities = ...;
int Fixed[Cities] = ...;
int Demand[Cities] = ...;
float SupplyCost[Cities][Cities] = ...;

dvar boolean y[Cities]; //1 if there is a facility in tthe city
dvar boolean x[Cities][Cities]; //1 if city i is provided by facility  in city  j

dexpr float

Objective = sum(j in Cities) Fixed[j]*y[j] + sum(i in Cities, j in Cities) 0.35*Demand[i]*x[i][j]*SupplyCost[i][j]; 
    
minimize Objective;
  
subject to{
  
  forall (i in Cities) sum(j in Cities) x[i][j]==1; //One facility providing a city
  
  forall (i in Cities, j in Cities) x[i][j]<= y[j]; //Provided by city where there is a facility

}

execute DISPLAY_RESULTS{
writeln("Objective = ",Objective);
  for (var j in Cities)
  {
    if (y[j]==1)
    {
        write("  ", j);
    }        
}    
writeln;

for (var j in Cities)
  {
    if (y[j]==1)
    {
      writeln();
      write("  ", j, " delivers to: ");
        for (var i in Cities)
      {
        if (x[i][j]==1)
        {
          write("  ",i);
         }
   }
   writeln();
 }

}  
                 
}

And Data:

/NbCities=12;
Cities = {A,B,C,D,E,F,G,H,I,J,K,L};
//Capacity = 99999;
//MaxDistance = 9999;
//MaxDepots = 9999;
Fixed = [100 200 130 150 225    175    190    210    165    230    125    215 ];
Demand = [15 10    12    18    5    24    11    16    13    22    19    20 ];
SupplyCost = [
[ 0        15    37    55    24    60    18    33    48    40    58    67  ]
[ 15    0    22    40    38    52    33    48    42    55    61    61  ]
[ 37    22    0    18    16    30    41    28    20    39    58    39  ]
[ 55    40    18    0    34    12    69    46    24    62    43    34  ]
[ 24    38    16    34    0    36    25    12    24    47    37    43  ]
[ 60    52    30    12    36    0    57    42    12    50    31    22  ] 
[ 18    33    41    69    25    57    0    15    45    22    41    61  ]
[ 33    48    28    46    12    42    15    0    30    37    25    46  ]
[ 48    42    20    24    24    12    45    30    0    38    19    19  ]
[ 40    55    39    62    47    50    22    37    38    0    19    40  ]
[ 58    61    58    43    37    31    41    25    19    19    0    21  ]
[ 67    61    39    34    43    22    61    46    19    40    21    0  ]
];

And there is a screen dump of ILOG when i try to run my configuration with data (donnee1) that are on the screen. I hope this is clear .

Thank you!

Dear Mathis,

Could you please share a minimal model that would allow us (with some luck) to reproduce the problem?

Could you also please share a screen dump showing the problem?

Cheers,

Dear Mathis,

Thank you for the files. We could reproduce the problem which is triggered by the use of character with accents in filenames!

This seems to be  a bug and as a workaround I suggest you rename the files without accents.

I hope this helps,

Cheers,

Dear Renaud,

Here is the archive of the project: https://www.dropbox.com/s/dv20wlv61g5j4pj/HubLocation.zip?dl=0

It works on my colleague's  computer, i guess there is something wrong in my Cplex settings but i donwloaded it with the same process than him. 

Cheers,

Dear Mathis,

We cannot reproduce your problem so could you please provide us with a tarball or zip archive containing this project configuration file as well (files with names starting with '.' in the project directory). Maybe they are corrupted.

Cheers,

Dear Renaud

There is my model (model1), it is a facility location problem to minimize cost :

{string} Cities = ...;
int Fixed[Cities] = ...;
int Demand[Cities] = ...;
float SupplyCost[Cities][Cities] = ...;

dvar boolean y[Cities]; //1 if there is a facility in tthe city
dvar boolean x[Cities][Cities]; //1 if city i is provided by facility  in city  j

dexpr float

Objective = sum(j in Cities) Fixed[j]*y[j] + sum(i in Cities, j in Cities) 0.35*Demand[i]*x[i][j]*SupplyCost[i][j]; 
    
minimize Objective;
  
subject to{
  
  forall (i in Cities) sum(j in Cities) x[i][j]==1; //One facility providing a city
  
  forall (i in Cities, j in Cities) x[i][j]<= y[j]; //Provided by city where there is a facility

}

execute DISPLAY_RESULTS{
writeln("Objective = ",Objective);
  for (var j in Cities)
  {
    if (y[j]==1)
    {
        write("  ", j);
    }        
}    
writeln;

for (var j in Cities)
  {
    if (y[j]==1)
    {
      writeln();
      write("  ", j, " delivers to: ");
        for (var i in Cities)
      {
        if (x[i][j]==1)
        {
          write("  ",i);
         }
   }
   writeln();
 }

}  
                 
}

And Data:

/NbCities=12;
Cities = {A,B,C,D,E,F,G,H,I,J,K,L};
//Capacity = 99999;
//MaxDistance = 9999;
//MaxDepots = 9999;
Fixed = [100 200 130 150 225    175    190    210    165    230    125    215 ];
Demand = [15 10    12    18    5    24    11    16    13    22    19    20 ];
SupplyCost = [
[ 0        15    37    55    24    60    18    33    48    40    58    67  ]
[ 15    0    22    40    38    52    33    48    42    55    61    61  ]
[ 37    22    0    18    16    30    41    28    20    39    58    39  ]
[ 55    40    18    0    34    12    69    46    24    62    43    34  ]
[ 24    38    16    34    0    36    25    12    24    47    37    43  ]
[ 60    52    30    12    36    0    57    42    12    50    31    22  ] 
[ 18    33    41    69    25    57    0    15    45    22    41    61  ]
[ 33    48    28    46    12    42    15    0    30    37    25    46  ]
[ 48    42    20    24    24    12    45    30    0    38    19    19  ]
[ 40    55    39    62    47    50    22    37    38    0    19    40  ]
[ 58    61    58    43    37    31    41    25    19    19    0    21  ]
[ 67    61    39    34    43    22    61    46    19    40    21    0  ]
];

And there is a screen dump of ILOG when i try to run my configuration with data (donnee1) that are on the screen. I hope this is clear .

Thank you!

Dear Mathis,

Could you please share a minimal model that would allow us (with some luck) to reproduce the problem?

Could you also please share a screen dump showing the problem?

Cheers,