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MIPFRACREDUCE

Description
Branch and Bound: Specifies how often the optimizer should run a heuristic to reduce the number of fractional integer variables in the node LP solutions.
Type
Integer
Topic areas
Branch and Bound Search, Root
Values
-1 
Automatic.
0 
Disabled.
1 
Run before and after cutting on the root node.
2 
Run also during root cutting.
3 
Run also during the tree search.
Default value
-1
Note
This heuristic is only applicable to problems that are dual degenerate. These are problems that contain multiple solutions with identical objective function value. The more dual degenerate a problem is, the more likely it will be for this heuristic to have an improving effect.
Affects routines
XPRSmipoptimize ( MIPOPTIMIZE).
Category
Control

Parent Topic Control Parameters

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