Originally posted by: ShaCplex

Hi ,

it seems that the objective value is wrongly printed;

i wrote 

docplex.mp.model import Model

docplex.mp.solution import SaveSolution

 

mdl = Model("LP")

sol = SaveSolution (mdl)

 

after solving,

mdl.solve(log_output = True).display()

I get the objective = 72508.423

but sol.get_objective_value() gives me 

 = -1e+75

whats this issue? can you please assist

 

Regards,

shahul

 

 

 

 

 

 

 

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Where do you get this 72508.423 from? Are you sure it is reported as optimal objective value? Could it be that the model is infeasible and the 72508.423 is just some bound on the objective?

Can you please explain where this 72508.423 comes from and also show the log output for your solve?

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Originally posted by: ShaCplex

Hi Daniel,

here you are;

solution = mdl.solve(log_output=True)

CPXPARAM_Read_DataCheck                          1
Tried aggregator 1 time.
LP Presolve eliminated 23 rows and 9 columns.
All rows and columns eliminated.
Presolve time = 0.00 sec. (0.01 ticks)

solution.display()

solution for: RPS
objective: 72508.423
var_BAH-DXB#DXB-JFK_BAH-JFK_PR = 203.000
var_BCN-DXB#DXB-CPT_BCN-CPT_PR = 143.000
var_BOM-DXB#DXB-EBB_BOM-EBB_PR = 5589.000
var_BAH-DXB#DXB-JFK_BAH-JFK_PR_J_J = 203.000
var_BCN-DXB#DXB-CPT_BCN-CPT_PR_J_J = 143.000
var_BOM-DXB#DXB-EBB_BOM-EBB_PR_J_J = 5589.000

Regards,

shahul

#CPLEXOptimizers
#DecisionOptimization

Hm, that indeed looks strange. What is the solution status?

Can you share the code/model? If not, can you export the model, solve it in the interactive and show the full log from the interactive here?

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#DecisionOptimization

Originally posted by: ShaCplex

Hi Daniel,

I will share you later, lengthy code. But I found that

mdl.solve().get_objective_value() gives me the right objective value.

 

Thanks you,

 

shahul

#CPLEXOptimizers
#DecisionOptimization