#18734: Construct an interactive_simplex_method.LPDictionary from a
MixedIntegerLinearProgram
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Reporter: mkoeppe | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.8
Component: numerical | Resolution:
Keywords: lp | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #18685, #18688, #18732, #18733 | Stopgaps:
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Description changed by mkoeppe:
Old description:
> For teaching, presentation, and debugging purposes, it could be powerful
> to have a function that sets up a
> sage.numerical.interactive_simplex_method.LPDictionary
> corresponding to the current basis of a MixedIntegerLinearProgram (with
> all variables real).
>
> #18685 added the prerequisite basis status information for the case of
> the GLPK backend.
> #18688 provides corresponding MixedIntegerLinearProgram methods.
>
> #18732 adds the missing functions for retrieving the data of the
> dictionary (for the GLPK backend).
> #18733 provides corresponding MixedIntegerLinearProgram methods.
New description:
For teaching, presentation, and debugging purposes, it could be powerful
to have a function that sets up a
sage.numerical.interactive_simplex_method.LPDictionary
corresponding to the current basis of a MixedIntegerLinearProgram (with
all variables real).
(One would probably first set up an InteractiveLPProblemStandardForm from
a MixedIntegerLinearProgram, and then call its "dictionary" method to
construct the dictionary.)
#18685 added the prerequisite basis status information for the case of the
GLPK backend.
#18688 provides corresponding MixedIntegerLinearProgram methods.
#18732 adds the missing functions for retrieving the data of the
dictionary (for the GLPK backend).
#18733 provides corresponding MixedIntegerLinearProgram methods.
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Ticket URL: <http://trac.sagemath.org/ticket/18734#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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