de.lmu.ifi.dbs.elki.datasource.filter.normalization

Class AbstractNormalization<V extends NumberVector>

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.filter.AbstractConversionFilter<I,O>

de.lmu.ifi.dbs.elki.datasource.filter.AbstractVectorConversionFilter<V,V>

de.lmu.ifi.dbs.elki.datasource.filter.normalization.AbstractNormalization<V>

Type Parameters:

V - Object type processed

All Implemented Interfaces:

Normalization<V>, ObjectFilter

Direct Known Subclasses:

AttributeWiseErfNormalization, AttributeWiseMeanNormalization, AttributeWiseMinMaxNormalization, AttributeWiseVarianceNormalization, InverseDocumentFrequencyNormalization

public abstract class AbstractNormalization<V extends NumberVector>
extends AbstractVectorConversionFilter<V,V>
implements Normalization<V>

Abstract super class for all normalizations.

Since:

0.4.0

Author:

Elke Achtert

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractVectorConversionFilter

factory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractNormalization() Initializes the option handler and the parameter map.

Method Summary

Methods

Modifier and Type	Method and Description
protected SimpleTypeInformation<? super V>	convertedType(SimpleTypeInformation<V> in) Get the output type from the input type after conversion.
V	restore(V featureVector) Transforms a feature vector to the original attribute ranges.
String	toString()
LinearEquationSystem	transform(LinearEquationSystem linearEquationSystem) Transforms a linear equation system describing linear dependencies derived on the normalized space into a linear equation system describing linear dependencies quantitatively adapted to the original space.

Methods inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractVectorConversionFilter

initializeOutputType

Methods inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractConversionFilter

filter, filterSingleObject, getInputTypeRestriction, getLogger, prepareComplete, prepareProcessInstance, prepareStart

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.datasource.filter.ObjectFilter

filter

Constructor Detail

AbstractNormalization

protected AbstractNormalization()

Initializes the option handler and the parameter map.

Method Detail

convertedType

protected SimpleTypeInformation<? super V> convertedType(SimpleTypeInformation<V> in)

Description copied from class: AbstractConversionFilter

Get the output type from the input type after conversion.

Specified by:

convertedType in class AbstractConversionFilter<V extends NumberVector,V extends NumberVector>

Parameters:

in - input type restriction

Returns:

output type restriction

restore

public V restore(V featureVector)
                               throws NonNumericFeaturesException

Description copied from interface: Normalization

Transforms a feature vector to the original attribute ranges.

Specified by:

restore in interface Normalization<V extends NumberVector>

Parameters:

featureVector - a feature vector to be transformed into original space

Returns:

a feature vector transformed into original space corresponding to the given feature vector

Throws:

NonNumericFeaturesException - feature vector is not compatible with values initialized during normalization

transform

public LinearEquationSystem transform(LinearEquationSystem linearEquationSystem)

Description copied from interface: Normalization

Transforms a linear equation system describing linear dependencies derived on the normalized space into a linear equation system describing linear dependencies quantitatively adapted to the original space.

Specified by:

transform in interface Normalization<V extends NumberVector>

Parameters:

linearEquationSystem - the linear equation system to be transformed

Returns:

a linear equation system describing linear dependencies derived on the normalized space transformed into a linear equation system describing linear dependencies quantitatively adapted to the original space

toString

public String toString()

Overrides:

toString in class Object