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Re: [Help-glpk] Save solution in GLPK
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From: |
Andrew Makhorin |
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Subject: |
Re: [Help-glpk] Save solution in GLPK |
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Date: |
Tue, 5 Jun 2007 14:03:21 +0400 |
> It seems to me that you would like to re-optimize your problem. Is
> your problem dual feasible at the second call of lpx_simplex? If so,
> you should use dual simplex. Just call lpx_set_int_parm(lp,
> LPX_K_DUAL, 1); before lpx_simplex.
Cedric adds new columns, not rows, so the basis must remain primal
feasible, while the dual simplex assumes dual feasibility.