ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Tue, 24 Feb 2015 10:19:05 +0100How to stop a MILP before it reaches the optimal solution (using different backends)?https://ask.sagemath.org/question/25909/how-to-stop-a-milp-before-it-reaches-the-optimal-solution-using-different-backends/Sometimes you don't need an optimal solution. A feasible solution is a must, but a decent value of the objective function will do. At least that's better than waiting forever...
Some backends (most?, all?) for the MixedIntegerLinearProgram support different stop criteria. But it took me quite some time to find them. How to tell MixedIntegerLinearProgram not to continue until the optimal solution is found?
PD: I found the answer (at least part of it) before I submitted this question, but I think it's good to ask the question for reference:pangTue, 24 Feb 2015 10:19:05 +0100https://ask.sagemath.org/question/25909/Why do I get the "unable to find a common ring for all elements" error message?https://ask.sagemath.org/question/10746/why-do-i-get-the-unable-to-find-a-common-ring-for-all-elements-error-message/I was wondering if you can take a look at this cell:
http://sagecell.sagemath.org/?q=ypqhgw
and let me know why I get the error message.
ThanksBehzadSun, 17 Nov 2013 20:46:09 +0100https://ask.sagemath.org/question/10746/