org.simulator.math
Class Relative_N_Metric

java.lang.Object
  org.simulator.math.QualityMeasure
      org.simulator.math.Relative_N_Metric

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

RelativeEuclideanDistance, RelativeManhattanDistance

public class Relative_N_Metric
extends QualityMeasure

Computes the relative distance of two vectors based on the N_Metric distance.

Since:

1.0

Version:

$Rev: 454 $

Author:

Roland Keller

See Also:

Serialized Form

Field Summary

protected N_Metric

metric The metric the relative distance is based on.

Fields inherited from class org.simulator.math.QualityMeasure

defaultValue, meanFunction

Constructor Summary

Relative_N_Metric()
Default constructor

Relative_N_Metric(double root)
Initialization with a certain n

Relative_N_Metric(N_Metric metric)
Initialization with a given N_Metric

Method Summary

double	distance(MultiTable.Block.Column x, MultiTable.Block.Column expected, double defaultValue) Returns the distance of the two vectors x and y with the given root.
void	setDefaultValue(double value) Set the value to be returned by the distance function in cases, in which no distance can be computed.
void	setRoot(double root) Sets the root

Methods inherited from class org.simulator.math.QualityMeasure

distance, distance, getColumnDistances, getDefaultValue, getMeanFunction, setMeanFunction

Methods inherited from class java.lang.Object

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

Field Detail

metric

protected N_Metric metric

The metric the relative distance is based on.

Constructor Detail

Relative_N_Metric

public Relative_N_Metric()

Default constructor

Relative_N_Metric

public Relative_N_Metric(double root)

Initialization with a certain n

Parameters:

root -

Relative_N_Metric

public Relative_N_Metric(N_Metric metric)

Initialization with a given N_Metric

Parameters:

metric -

Method Detail

distance

public double distance(MultiTable.Block.Column x,
                       MultiTable.Block.Column expected,
                       double defaultValue)

Description copied from class: QualityMeasure

Returns the distance of the two vectors x and y with the given root. This may be the root in a formal way or a default value to be returned if the distance uses a non defined operation. If one array is longer than the other one additional values do not contribute to the distance. Double.NaN values are also ignored.

Specified by:

distance in class QualityMeasure

Parameters:

x - an array

expected - another array

defaultValue - The value to be returned in cases in which no distance computation is possible.

Returns:

The distance between the two arrays x and y.

setDefaultValue

public void setDefaultValue(double value)

Description copied from class: QualityMeasure

Set the value to be returned by the distance function in cases, in which no distance can be computed.

Overrides:

setDefaultValue in class QualityMeasure

setRoot

public void setRoot(double root)

Sets the root

Parameters:

root -