#12547: Single variable inequalities in MixedIntegerLinearProgram should set the
min and max automatically
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Reporter: ppurka | Owner: ncohen
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: linear programming | Keywords: MixedIntegerLinearProgram
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies: 12546
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Comment(by ncohen):
> I felt it was a more user-friendly way of taking input since you
essentially just write the inequations as you would write on paper.
Well, I never claimed that Sage's way was the best `:-)`
Actually, there are many different ways to add constraints... With
inequalities, or with the min/max arguments of the add_constraint method.
We can also create other if it is easier.
The thing is that there are many cases (the Graph library is full of them)
where LP are generated from a graph, so this should stay possible. And
also that changing the lower bounds the way would suggested was dangerous
in many cases.. But that's all, I earn no money if we keep the current
implementation of add_constraint, so we're free to do whatever we want
with them `:-)`
Nathann
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12547#comment:3>
Sage <http://www.sagemath.org>
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