org.knime.base.node.mine.bfn.fuzzy.shrink
Class VolumeRuleBasedShrink

java.lang.Object
  org.knime.base.node.mine.bfn.fuzzy.shrink.VolumeRuleBasedShrink

All Implemented Interfaces:

Shrink

public final class VolumeRuleBasedShrink
extends Object
implements Shrink

Calculates the volume loss from the left or right support or core region border to the new value, divided by the support spread d1_i*Prod(i!=k)d2_k/Prod(k)d2_k = d1_i/d2_i.

Author:

Thomas Gabriel, University of Konstanz

Field Summary

Fields inherited from interface org.knime.base.node.mine.bfn.fuzzy.shrink.Shrink

SHRINK_KEY, SHRINKS

Method Summary

static Shrink	getInstance()
double	leftCoreLoss(double value, MembershipFunction mem) leftCoreLoss(.).
double	leftSuppLoss(double value, MembershipFunction mem) leftSuppLoss(.).
double	rightCoreLoss(double value, MembershipFunction mem) rightCoreLoss(.).
double	rightSuppLoss(double value, MembershipFunction mem) rightSuppLoss(.).
String	toString() Returns the string representation VolumeRuleBased for this shrink function.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static Shrink getInstance()

Returns:

a new instance of the ShrinkVolumeRuleBased object

leftSuppLoss

public double leftSuppLoss(double value,
                           MembershipFunction mem)

Description copied from interface: Shrink

leftSuppLoss(.).

Specified by:

leftSuppLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss normalized loss in volume in the left support region

leftCoreLoss

public double leftCoreLoss(double value,
                           MembershipFunction mem)

Description copied from interface: Shrink

leftCoreLoss(.).

Specified by:

leftCoreLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss normalized loss in volume in the left core region

rightSuppLoss

public double rightSuppLoss(double value,
                            MembershipFunction mem)

Description copied from interface: Shrink

rightSuppLoss(.).

Specified by:

rightSuppLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss normalized loss in volume in the right support region

rightCoreLoss

public double rightCoreLoss(double value,
                            MembershipFunction mem)

rightCoreLoss(.).

Specified by:

rightCoreLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss normalized loss in volume in the right core region

toString

public final String toString()

Returns the string representation VolumeRuleBased for this shrink function.

Overrides:

toString in class Object

Returns:

a name for this shrink function