QSimplexOps Enumeration
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 48.01.01+1850ffb5138fca4d234db948cf0432e896c1cf42
[FlagsAttribute] public enum QSimplexOps
| Member name | Value | Description |
|---|---|---|
| PrimalPphase1Traditional | 1 | Force traditional primal first phase. |
| PrimalPhase1BigM | 2 | Force BigM primal first phase. |
| DualPhase1Traditional | 4 | Force traditional dual first phase. |
| DualPhase1BigM | 8 | Force BigM dual first phase. |
| ForceDualBounds | 16 | Always use artificial bounds in dual. |
| NoWarmStart | 32 | Use original problem basis only when warmstarting the KKT. |
| NoDualCrash | 64 | Skip the primal bound flips for ranged primals (might cause more trouble than good if the bounds are very large). |
| ExtendedDualCrash | 128 | Also do the single pivot crash. |
| CautiousPerturbation | 256 | Do not apply aggressive perturbation in dual. |
| TraditionalScale | 512 | Applies standard scaling to the KKT system. |
| NoBarrierFallback | 1,024 | Do not fall back to using Barrier in case of numerical difficulties with quadratic simplex during a MIP solve. |
| Phase1Primal | 2,048 | Use primal simplex to solve the phase 1 feasibility problem before applying quadratic primal simplex. |
| Phase1Dual | 4,096 | Use dual simplex to solve the phase 1 feasibility problem before applying quadratic primal simplex. |
| Phase1Barrier | 8,192 | Use barrier algorithm to solve the phase 1 feasibility problem before applying quadratic primal simplex. |
| PartialPricing | 16,384 | Use partial pricing. |
| FullPricing | 32,768 | Use full pricing. |
| CrossoverCleanup | 65,536 | Perform cleanup if a superbasic solution is provided for warm-start. |
Reference
© 2001-2026 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.