Initializing help system before first use

XSLP_PROBING, NLPPROBING

Description
This control determines whether probing on a subset of variables should be performed prior to starting the main algorithm. Probing runs multiple times bound reduction in order to further tighten the bounding box.
Type
Integer
Topic area
Presolve
Values
-1 
Automatic.
0 
Disable SLP probing.
1 
Activate SLP probing only on binary variables.
2 
Activate SLP probing only on binary or unbounded integer variables.
3 
Activate SLP probing only on binary or integer variables.
4 
Activate SLP probing only on binary, integer variables, and unbounded continuous variables.
5 
Activate SLP probing on any variable.
Default value
-1
Note
The Xpress NonLinear nonlinear probing, which is carried out once, is independent of the Optimizer presolve (which is carried out during each SLP iteration). The probing level allows for probing on an expanding set of variables, allowing for probing on all variables (level 5) or only those for which probing is more likely to be useful (binary variables).
Affects routines
XSLPpresolve
See also
XSLP_PRESOLVEOPS,
Category
Control

Parent Topic Integer control parameters

© 2001-2025 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.