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

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

All Implemented Interfaces:

Shrink

public final class VolumeBorderBasedShrink
extends Object
implements Shrink

ShrinkDistanceBased. calculates the volume loss from the left or right support or core region border to the new value, divided by the support or core 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 VolumeBorderBased 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)

leftSuppLoss(.).

Specified by:

leftSuppLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss in distance assessed to the left dimension of the support

leftCoreLoss

public double leftCoreLoss(double value,
                           MembershipFunction mem)

leftCoreLoss(.).

Specified by:

leftCoreLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss in distance assessed to the core region

rightSuppLoss

public double rightSuppLoss(double value,
                            MembershipFunction mem)

rightSuppLoss(.).

Specified by:

rightSuppLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy membership function

Returns:

loss in distance assessed to the right dimension of the support

rightCoreLoss

public double rightCoreLoss(double value,
                            MembershipFunction mem)

rightCoreLoss(.).

Specified by:

rightCoreLoss in interface Shrink

Parameters:

value - current value

mem - holds parameter of fuzzy trapezoid membership function

Returns:

loss in distance assessed to the core region

toString

public final String toString()

Returns the string representation VolumeBorderBased for this shrink function.

Overrides:

toString in class Object

Returns:

a name for this shrink