<br><br><div class="gmail_quote">On Wed, Sep 19, 2012 at 12:48 PM, Benedikt Schmidt <span dir="ltr"><<a href="mailto:benediktibk@aon.at" target="_blank">benediktibk@aon.at</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p>So, do I understand this right: Clp can solve stuff which contains integers, but only under certain circumstances? And under these circumstances I will have to use Cbc?</p></blockquote><div><br>To the best of my knowledge, Clp solves only LP and Cbc MILP, so if you have integers you need to fire up Cbc and not Clp.<br>
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<p>On Wed, 19 Sep 2012 12:35:39 +0200, Bo Jensen <<a href="mailto:jensen.bo@gmail.com" target="_blank">jensen.bo@gmail.com</a>> wrote:</p>
<blockquote style="padding-left:5px;border-left:#1010ff 2px solid;margin-left:5px;width:100%">
<p>"I nailed them down to booleans through upper and lower bounds."<br><br>That's an binary variable, but still an integer :-) So it can not be solved with simplex unless your matrix is totally modular (and RHS integer too), probably need to use Cbc.<br>
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<div class="gmail_quote">On Wed, Sep 19, 2012 at 12:28 PM, Benedikt Schmidt <span><<a href="mailto:benediktibk@aon.at" target="_blank">benediktibk@aon.at</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br> at the moment I am trying to solve a mixed-integer problem. Actually the<br> integers are not really integers, I nailed them down to booleans through<br>
upper and lower bounds. The problem is, that the clp can not solve the<br> problem, it says "Clp6002E 1 bad bound pairs or bad objectives were found<br> -<br> first at R0", but the glpk is able to get the right solution. I've reduced<br>
the problem as much as possible and attached it to this mail.<br> Could that be a bug or am I using the interface wrong?<br><br> Thanks,<br> Benedikt<br>_______________________________________________<br> Clp mailing list<br>
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