MIP zero-half cuts switch
Decides whether or not to generate zero-half cuts for the problem.
Purpose
MIP zero-half cuts switch
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Description
Decides whether or not to generate zero-half cuts for the problem. The value 0 (zero), the default, specifies that the attempt to generate zero-half cuts should continue only if it seems to be helping.
If you find that too much time is spent generating zero-half cuts for your model, consider setting this parameter to -1 (minus one) to turn off zero-half cuts.
If the dual bound of your model does not make sufficient progress, consider setting this parameter to 2 to generate zero-half cuts more aggressively.
For a definition of a zero-half cut, see the topic Zero-half cuts in the general topic Cuts in the CPLEX User’s Manual. The table Parameters for controlling cuts, also in the user’s manual, includes links to the documentation of other parameters affecting other types of cuts.
| Value | Meaning |
|---|---|
| -1 | Do not generate zero-half cuts |
| 0 | Automatic: let CPLEX choose; default |
| 1 | Generate zero-half cuts moderately |
| 2 | Generate zero-half cuts aggressively |