Hello,<br> just a quick info: if someone choose to avoid the hessian calculation choosing the quasi-newton approach, is the sparsity structure of the Hessian of the Lagrangian function still required by IPOPT?<br><br>Thanks,<br>
Antonello<br clear="all"><br>-- <br>Antonello Lobianco<br>INRA, Laboratoire d'Economie Forestière<br>14 Rue Girardet - 54000 Nancy, France<br>Tel: +33.652392310<br>Email: <a href="mailto:antonello.lobianco@nancy-engref.inra.fr" target="_blank">antonello.lobianco@nancy-engref.inra.fr</a><br>
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