Initializing help system before first use

CUTSEPGOMORYSTRATEGY

Description
Strategy for separation of Gomory cuts. A more aggressive strategy will increase the effort spent in Gomory cut separation and the frequency at which Gomory cuts are separated during the branch-and-bound tree search. If a conservative strategy is selected (i.e., value 1, XPRS_CUTSEPSTRATEGY_CONSERVATIVE), then Gomory 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 Gomory cuts.
1 
XPRS_CUTSEPSTRATEGY_CONSERVATIVE Conservative cut separation strategy. Gomory 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
CUTSEPGOMORYSTRATEGY = -2
will disable all other cut separators, but enforce an automatic separation strategy for Gomory cuts.
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE).
See also
CUTSEPSTRATEGY, CUTSEPCLIQUESTRATEGY, CUTSEPMIRSTRATEGY, CUTSEPCOVERSTRATEGY, CUTSEPFLOWPATHSTRATEGY, CUTSEPIMPLBOUNDSTRATEGY, CUTSEPGUBCOVERSTRATEGY, CUTSEPZEROHALFSTRATEGY, CUTSEPSTRONGCGSTRATEGY, CUTSEPFARKASSTRATEGY, CUTSEPPATHMIXSTRATEGY, CUTSEPMCFSTRATEGY, CUTSEPRLTSTRATEGY, CUTSEPSDPSTRATEGY.
Category
Control

Parent Topic Control Parameters

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