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<BR>Hi,<BR> <BR>I am running a maximization version of IP on ipopt (3.9.2) through AMPL. However I am getting negative values (while the optimum should be positive). I was reading the documentation (i.e. 09061.WaechterAndreas.Paper.2089.pdf). It says for the minimization version, Hessian regularization helps the solver to avoid maximum and saddle points. If I am not wrong, for the maximization version similarly the minimum and saddle points would be avoided. I am wondering if I am missing something. I shall appreciate any suggestion/pointer. <BR>
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Thanks,<BR> <BR>Regards<BR>Sakib<BR><BR>
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