#15658: CPLEX backenddoes not handle binary variables
----------------------------------+----------------------------
Reporter: azi | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.1
Component: linear programming | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
----------------------------------+----------------------------
There is a problem with the CPLEX backend for MixedIntegerLinearProgram.
Namely the fact that one specifies a variable to be binary gets ignored. I
couldn't find the bug in the code (it looks like it handles this well)
hence I am posting it here.
{{{
sage: M = MixedIntegerLinearProgram(solver='CPLEX')
sage: A = M.new_variable(binary=True, dim=2)
sage: M.add_constraint(A[0][1]+A[0][2] == 2)
sage: M.solve()
0.0
sage: M.get_values(A)
{0: {1: 2.0, 2: 0.0}}
}}}
Best,
Jernej
--
Ticket URL: <http://trac.sagemath.org/ticket/15658>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
