Catalano.MachineLearning.FeatureScaling

Class LogarithmNormalization

java.lang.Object

Catalano.MachineLearning.FeatureScaling.LogarithmNormalization

All Implemented Interfaces:

IFeatureScaling, java.io.Serializable

public class LogarithmNormalization
extends java.lang.Object
implements IFeatureScaling

Logarithm Normalization. sign(x) * log10(abs(x)+1)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LogarithmNormalization() Initializes a new instance of the LogarithmNormalization class.

Method Summary

Modifier and Type	Method and Description
double[][]	Apply(DecisionVariable[] variables, double[][] data) Apply the normalization.
double[][]	Apply(double[][] data) Apply the normalization.
void	ApplyInPlace(DecisionVariable[] variables, double[][] data) Apply the normalization in place of the original data.
void	ApplyInPlace(double[][] data) Apply the normalization in place of the original data.
double[]	Compute(DecisionVariable[] variables, double[] feature) Normalize the feature.
double[]	Compute(double[] feature) Normalize the feature.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogarithmNormalization

public LogarithmNormalization()

Initializes a new instance of the LogarithmNormalization class.

Method Detail

Apply

public double[][] Apply(double[][] data)

Description copied from interface: IFeatureScaling

Apply the normalization.

Specified by:

Apply in interface IFeatureScaling

Parameters:

data - Data to be normalized.

Returns:

Normalized data.

Apply

public double[][] Apply(DecisionVariable[] variables,
                        double[][] data)

Description copied from interface: IFeatureScaling

Apply the normalization.

Specified by:

Apply in interface IFeatureScaling

Parameters:

variables - Decision variables.

data - Data to be normalized.

Returns:

Normalized. data.

ApplyInPlace

public void ApplyInPlace(double[][] data)

Description copied from interface: IFeatureScaling

Apply the normalization in place of the original data.

Specified by:

ApplyInPlace in interface IFeatureScaling

Parameters:

data - Data to be normalized.

ApplyInPlace

public void ApplyInPlace(DecisionVariable[] variables,
                         double[][] data)

Description copied from interface: IFeatureScaling

Apply the normalization in place of the original data.

Specified by:

ApplyInPlace in interface IFeatureScaling

Parameters:

variables - Decision variables.

data - Data to be normalized.

Compute

public double[] Compute(double[] feature)

Description copied from interface: IFeatureScaling

Normalize the feature.

Specified by:

Compute in interface IFeatureScaling

Parameters:

feature - Feature to be normalized.

Returns:

Normalized feature.

Compute

public double[] Compute(DecisionVariable[] variables,
                        double[] feature)

Description copied from interface: IFeatureScaling

Normalize the feature.

Specified by:

Compute in interface IFeatureScaling

Parameters:

variables - Decision variables.

feature - Feature.

Returns:

Normalized feature.