Opened 10 years ago

Last modified 10 years ago

#12884 closed defect

Fix problems introduced by remove_constraint functionality in MIP — at Initial Version

Reported by: john_perry Owned by: ncohen
Priority: minor Milestone: sage-5.1
Component: linear programming Keywords: glpk, mixed integer programming, mip, linear programming, sd40.5
Cc: Merged in:
Authors: John Perry Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description

  • if the check_redundant option in MIP is true, then remove_constraint() should remove the constraint from self._constraints
  • apparently, GLPK wants you to re-initialize the basis after removing constraints, by calling glp_std_basis()

I'm going to upload a patch in a little bit.

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