#11606: simplify constraints in linear programs
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Reporter: john_perry | Owner: ncohen
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-4.8
Component: linear programming | Keywords: sd32
Work_issues: | Upstream: N/A
Reviewer: Nathann Cohen | Author: John Perry
Merged: | Dependencies:
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Changes (by newvalueoldvalue):
* status: needs_review => positive_review
* reviewer: => Nathann Cohen
* author: john_perry => John Perry
Comment:
Positive review to this patch, which passes all tests ! `:-)`
John, I do not see the errors you mentionned on my alpha4. The fact that
the write_lp and p.show return errors lead me to think that you have CBC
installed. Is this true ? `:-)`
Through OsiCbcSolverInterface, I did not find how to write those files and
some "names" in the structure of a LP were not available (like the "name
of the lp", or the "name of the objective function"), and because of that
I did not enable the names in the CBc interface. Perhaps this is one of
the things that would be fixed by a real interface with Cbc. But anyway, I
guess those bugs only appear on your install because of Cbc. They can also
be "fixed" by adding "solver= GLPK"in the doctests above.
Thank you for this patch ! `:-)`
Nathann
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11606#comment:35>
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