org.ojalgo.optimisation.integer

Class IntegerStrategy.GMICutConfiguration

java.lang.Object

org.ojalgo.optimisation.integer.IntegerStrategy.GMICutConfiguration

Enclosing interface:

IntegerStrategy

public static final class IntegerStrategy.GMICutConfiguration
extends Object

Gomory Mixed Integer Cut Configuration

Author:

apete

Field Summary

Fields

Modifier and Type	Field and Description
double	fractionality The minimum fractionality of the integer variable used to generate the cut.
BigDecimal	violation After the cut is generated it is transformed to be expresssed in the original model variables.

Constructor Summary

Constructors

Constructor and Description
GMICutConfiguration()

Method Summary

Modifier and Type	Method and Description
IntegerStrategy.GMICutConfiguration	withFractionality(double newFractionality)
IntegerStrategy.GMICutConfiguration	withViolation(BigDecimal newViolation)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fractionality

public final double fractionality

The minimum fractionality of the integer variable used to generate the cut. Less than this, and the (potential) cut is never generated.

violation

public final BigDecimal violation

After the cut is generated it is transformed to be expresssed in the original model variables. In this process the RHS of the cut inequality changes. This parameter controls how much the RHS is allowed to grow in magnitude. If it grows/expands to much the cut is discarded.

The cut/constraint violation is always exactly 1 (due to how the cut is generated). That means the magnitude of the RHS becomes a meassure of the relative cut violation. Allowing large RHS values is equivalent to accepting small relative cut violations. The number you specify here is the inverse of the relative cut violation (the absolute value of the max RHS allowed).

Constructor Detail

GMICutConfiguration

public GMICutConfiguration()

Method Detail

withFractionality

public IntegerStrategy.GMICutConfiguration withFractionality(double newFractionality)

withViolation

public IntegerStrategy.GMICutConfiguration withViolation(BigDecimal newViolation)