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<p class="MsoNormal"><span style="font-size:11.0pt">Ah, thank you for the quick response. I was returning SCIP_DIDNOTFIND.....<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:black">Mike Hewitt<br>
Professor <br>
Ralph Marotta Endowed Chair in Free Enterprise<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:black">Director, Quinlan Business Leadership Hub<br>
Faculty Director, Supply Chain and Sustainability Center<br>
Quinlan School of Business</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Helvetica;color:black">Loyola University Chicago<br>
312-915-7394<br>
<a href="mailto:mhewitt3@luc.edu"><span style="color:#0563C1">mhewitt3@luc.edu</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">From:
</span></b><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">Scip <scip-bounces@zib.de> on behalf of Ambros Gleixner <gleixner@zib.de><br>
<b>Date: </b>Saturday, February 17, 2024 at 02:57<br>
<b>To: </b>scip@zib.de <scip@zib.de><br>
<b>Subject: </b>Re: [SCIP] Branching rule for subset of variables<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hi Mike,<br>
<br>
This is easily possible by returning the result SCIP_DIDNOTRUN, in which <br>
case the branching rule with the next lower priority will take over.<br>
<br>
Best,<br>
Ambros<br>
<br>
<br>
Am 17.02.2024 um 05:02 schrieb Hewitt, Michael:<br>
> I am using SCIP to solve a formulation via branch and price in which <br>
> there are integer variables other than the ones that are priced out. For <br>
> example, suppose there are integer variables X, which are enumerated and <br>
> not priced out. Suppose there are also binary variables Y, which are <br>
> generated dynamically via pricing.<br>
> <br>
> I have implemented a branching rule that is like Ryan & Foster for when <br>
> one of the Y variables are fractional. I’ve implemented this by <br>
> modifying the Bin packing example code.<br>
> <br>
> In the case where all the fractional variables at a node are the X <br>
> variables (meaning not the ones that need to be priced out), I’d like my <br>
> branching rule to basically defer to normal SCIP branching. How do I do <br>
> that?<br>
> <br>
> Thanks, Mike<br>
> <br>
> Mike Hewitt<br>
> Professor<br>
> Ralph Marotta Endowed Chair in Free Enterprise<br>
> <br>
> Director, Quinlan Business Leadership Hub<br>
> Faculty Director, Supply Chain and Sustainability Center<br>
> Quinlan School of Business<br>
> <br>
> Loyola University Chicago<br>
> 312-915-7394<br>
> mhewitt3@luc.edu <<a href="mailto:mhewitt3@luc.edu">mailto:mhewitt3@luc.edu</a>><br>
> <br>
> <br>
> _______________________________________________<br>
> Scip mailing list<br>
> Scip@zib.de<br>
> <a href="https://listserv.zib.de/mailman/listinfo/scip">https://listserv.zib.de/mailman/listinfo/scip</a><br>
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