[Coin-discuss] Construct a MIP problem

[Spencer Fung]

Hi All,

 

I am wondering how to construct a MIP problem by using constraint matrix. I
have done the following procedure to create a MIP problem, 

 

    si->loadProblem(*matrix, NULL, col_ub, NULL, sense, rhs, NULL);

    si->setInteger(ctype, n_cols);

si->writeMps("problem");

 

However, the column type show in "problem.mps" is still continuous. But
after invoke the branchAndBound(), the column type is changed to integer. Is
it possible to obtain an integer model before invoking the B&B?

 

Thanks.

 

Cheers,

Spencer

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