Initializing help system before first use

NODEAPPLIEDBOUNDS

Description
This control determines whether the solver is allowed to apply primal reductions at each node. The solver will use the constraints of the node to tighten the range of variables, often resulting in fixing their values. This can greatly simplify the problem and may even determine optimality or infeasibility of the node before the simplex method commences.
Type
Integer
Topic areas
Branch and Bound Search, Presolve
Values
-1 
Automatic: the solver decides if and when to apply primal reductions at nodes.
0 
Disabled.
1 
Only apply primal reductions to MIP entities.
2 
Apply primal reductions to all variables.
Default value
-1
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE).
See also
Working with Presolve, NODEPRESOLVE, NODEPROBINGEFFORT.
Category
Control

Parent Topic Control Parameters

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