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

Class AttributeWiseErfNormalization<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>

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

Type Parameters:

V - Object type

All Implemented Interfaces:

Normalization<V>, ObjectFilter

@Alias(value={"de.lmu.ifi.dbs.elki.datasource.filter.normalization.AttributeWiseErfNormalization","de.lmu.ifi.dbs.elki.datasource.filter.AttributeWiseErfNormalization"})
public class AttributeWiseErfNormalization<V extends NumberVector>
extends AbstractNormalization<V>

Attribute-wise Normalization using the error function. This mostly makes sense when you have data that has been mean-variance normalized before.

Since:

0.4.0

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
private static Logging	LOG Class logger.

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

factory

Constructor Summary

Constructors

Constructor and Description
AttributeWiseErfNormalization() Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected V	filterSingleObject(V obj) Normalize a single instance.
protected SimpleTypeInformation<? super V>	getInputTypeRestriction() Get the input type restriction used for negotiating the data query.
protected Logging	getLogger() Class logger.

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

convertedType, restore, toString, transform

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, 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

Field Detail

LOG

private static final Logging LOG

Class logger.

Constructor Detail

AttributeWiseErfNormalization

public AttributeWiseErfNormalization()

Constructor.

Method Detail

filterSingleObject

protected V filterSingleObject(V obj)

Description copied from class: AbstractConversionFilter

Normalize a single instance. You can implement this as UnsupportedOperationException if you override both public "normalize" functions!

Specified by:

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

Parameters:

obj - Database object to normalize

Returns:

Normalized database object

getLogger

protected Logging getLogger()

Description copied from class: AbstractConversionFilter

Class logger.

Specified by:

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

Returns:

Logger

getInputTypeRestriction

protected SimpleTypeInformation<? super V> getInputTypeRestriction()

Description copied from class: AbstractConversionFilter

Get the input type restriction used for negotiating the data query.

Specified by:

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

Returns:

Type restriction