Initializing help system before first use

CUTSEPMIRSTRATEGY

Description
Strategy for separation of Mixed Integer Rounding (MIR) cuts. A more aggressive strategy will increase the effort spent in MIR cut separation and the frequency at which MIR cuts are separated during the branch-and-bound tree search. If a conservative strategy is selected (i.e., value 1, XPRS_CUTSEPSTRATEGY_CONSERVATIVE), then MIR cuts will be separated only at the root node of the branch-and-bound tree.
Type
Integer
Topic areas
Cuts, Branch and Bound Search
Values
-2 
XPRS_CUTSEPSTRATEGY_AUTOENFORCED Automatic selection of cut separation strategy, enforced regardless of the value of the meta control CUTSEPSTRATEGY.
-1 
XPRS_CUTSEPSTRATEGY_AUTOMATIC Automatic selection of cut separation strategy.
0 
XPRS_CUTSEPSTRATEGY_OFF Off. No separation of MIR cuts.
1 
XPRS_CUTSEPSTRATEGY_CONSERVATIVE Conservative cut separation strategy. MIR cuts separated only at the root node.
2 
XPRS_CUTSEPSTRATEGY_MODERATE Moderate cut separation strategy.
3 
XPRS_CUTSEPSTRATEGY_AGGRESSIVE Aggressive cut separation strategy.
Default value
-1
Note
Setting the control to value -2 ( XPRS_CUTSEPSTRATEGY_AUTOENFORCED) behaves like automatic selection (value -1, XPRS_CUTSEPSTRATEGY_AUTOMATIC), but, unlike -1, the value -2 is not overridden by the meta control CUTSEPSTRATEGY. For instance, setting 
CUTSEPSTRATEGY = 0
CUTSEPMIRSTRATEGY = -2
will disable all other cut separators, but enforce an automatic separation strategy for MIR cuts.
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE).
See also
CUTSEPSTRATEGY, CUTSEPCLIQUESTRATEGY, CUTSEPCOVERSTRATEGY, CUTSEPFLOWPATHSTRATEGY, CUTSEPIMPLBOUNDSTRATEGY, CUTSEPGUBCOVERSTRATEGY, CUTSEPZEROHALFSTRATEGY, CUTSEPSTRONGCGSTRATEGY, CUTSEPFARKASSTRATEGY, CUTSEPPATHMIXSTRATEGY, CUTSEPMCFSTRATEGY, CUTSEPGOMORYSTRATEGY, CUTSEPRLTSTRATEGY, CUTSEPSDPSTRATEGY.
Category
Control

Parent Topic Control Parameters

© 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.