IloExpr expr1(env);
IloExpr expr2(env);
IloExpr expr3(env);
for(int i=0;i<n;i++)
{
        expr1+=x[i];
}
for(int i=0;i<n;i++)
{
        expr2+=y[i];
}
expr3=expr1-expr2;
model.add(expr1 ==expr2)/model.add(expr3==0);
expr1.end();
expr2.end();
expr3.end();

when adding the constraint to CPLEX model, should we use model.add(expr1 ==expr2) or use the command model.add(expr3==0)?


------------------------------
Zhaojin LI
------------------------------

#DecisionOptimization

Hello,

It is according to what you prefer.
Actually CPLEX extracts the model in a same way with the 2 formulations.
You can check this with exportModel.

Regards,

Chris B.

------------------------------
Christiane Bracchi
------------------------------

Original Message:
Sent: Mon December 14, 2020 07:52 AM
From: Zhaojin LI
Subject: should we use model.add(expr1 ==expr2) or model.add(expr3==0)?


IloExpr expr1(env);
IloExpr expr2(env);
IloExpr expr3(env);
for(int i=0;i<n;i++)
{
        expr1+=x[i];
}
for(int i=0;i<n;i++)
{
        expr2+=y[i];
}
expr3=expr1-expr2;
model.add(expr1 ==expr2)/model.add(expr3==0);
expr1.end();
expr2.end();
expr3.end();

when adding the constraint to CPLEX model, should we use model.add(expr1 ==expr2) or use the command model.add(expr3==0)?


------------------------------
Zhaojin LI
------------------------------

#DecisionOptimization