<div dir="ltr"><div>Hernan,<br></div><div><br></div>Couenne is a global solver, hence it guarantees to find an optimal solution regardless of the initial one provided. The initial solution you give will be used by Ipopt (used by Couenne to solve some NLP problems, for instance for heuristics) and by Couenne itself, but only to serve as a cutoff (i.e. remove regions of the feasibility set). It can actually be very useful to decrease the running time. However, in general Couenne will not (and should not) give an optimal solution that depends on the initial one given.<br>
<br>Regards,<br>Pietro<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Sep 9, 2013 at 11:17 PM, Hernan <span dir="ltr"><<a href="mailto:hernanlespay@gmail.com" target="_blank">hernanlespay@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi,<br><br></div>I intend solve a integer non linear problem using ampl with the couenne solver. I want to give a initial solution to solve it. However, counne solve the problem disregarding the initial solution and solve it in the same time that without the initial solution.<br>
<br></div>what I can do?<br><br>best regards.<br><br><br></div>
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