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Re: [Help-glpk] Re: Simplex method infeasible, IP method feasible
From: |
Nicolo' Giorgetti |
Subject: |
Re: [Help-glpk] Re: Simplex method infeasible, IP method feasible |
Date: |
Wed, 10 Sep 2003 17:41:10 +0200 |
>
> Why infeasible? I tried your example with both simplex and interior.
> Here are the results below.
Ok, but If you check the constraints, A*xmin -b <= 0, you'll find that
some constraints are violated:
A*xmin-b =
1.0000e-004
-5.0000e-004
-8.3020e+001
-9.8723e+001
-6.4050e-005
-9.2220e-006
BTW, lpx_get_status() returns 183 (LPX_NOFEAS) and it is correct.
If you consider xmin of the interior point method
A*xmin-b =
2.5000e-003
1.3000e-003
-8.3015e+001
-9.8720e+001
-1.3258e-003
-4.9793e-003
Regards,
Nicolo'.
- [Help-glpk] Simplex method infeasible, IP method feasible, Nicolo' Giorgetti, 2003/09/09
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Andrew Makhorin, 2003/09/10
- Re: [Help-glpk] Re: Simplex method infeasible, IP method feasible,
Nicolo' Giorgetti <=
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Andrew Makhorin, 2003/09/11
- Re: [Help-glpk] Re: Simplex method infeasible, IP method feasible, Nicolo' Giorgetti, 2003/09/12
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Andrew Makhorin, 2003/09/12
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Nicolo' Giorgetti, 2003/09/12
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Andrew Makhorin, 2003/09/12
- Re: [Help-glpk] Re: Simplex method infeasible, IP method feasible, Nicolo' Giorgetti, 2003/09/13
- [Help-glpk] Re: Simplex method infeasible, IP method feasible, Andrew Makhorin, 2003/09/11