Initializing help system before first use

# NlpValidateKKT Method

Validates the first order optimality conditions also known as the Karush-Kuhn-Tucker (KKT) conditions versus the currect solution
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 47.01.01+0ba4e76731516b80760698bbaa939494dae84e49
Syntax
C#

    public void NlpValidateKKT(
    	int mode,
    	int respectbasis,
    	int updatemult,
    	double violtarget
    )

#### Parameters

mode Int32
  The calculation mode can be:
  - 0: recalculate the reduced costs at the current solution using the current dual solution.
  - 1: minimize the sum of KKT violations by adjusting the dual solution.
  - 2: perform both.
respectbasis Int32
  The following ways are defined to assess if a constraint is active:
  - 0: evaluate the recalculated slack activity versus XSLP_ECFTOL_R.
  - 1: use the basis status of the slack in the linearized problem if available.
  - 2: use both.
updatemult Int32
  The calculated values can be:
  - 0: only used to calculate the XSLP_VALIDATIONINDEX_K measure.
  - 1: used to update the current dual solution and reduced costs.
violtarget Double
  When calculating the best KKT multipliers, it is possible to enforce an even distribution of reduced costs violations by enforcing a bound on them.

See Also

#### Reference

XPRSprob Class
Optimizer Namespace
Parent Topic XPRSprob Methods

© 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.