de.lmu.ifi.dbs.elki.data.projection

Class FeatureSelection<V extends FeatureVector<F>,F>

java.lang.Object

de.lmu.ifi.dbs.elki.data.projection.FeatureSelection<V,F>

Type Parameters:

V - Vector type

F - Feature type

All Implemented Interfaces:

Projection<V,V>

public class FeatureSelection<V extends FeatureVector<F>,F>
extends Object
implements Projection<V,V>

Projection class for number vectors.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FeatureSelection.Parameterizer<V extends FeatureVector<F>,F> Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
protected ArrayAdapter<F,V>	adapter Array adapter.
private int	dimensionality Output dimensionality.
private FeatureVector.Factory<V,F>	factory Object factory.
private int	mindim Minimum dimensionality required for projection.

Constructor Summary

Constructors

Constructor and Description
FeatureSelection(int[] dims) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
private static <V extends FeatureVector<F>,F> ArrayAdapter<F,? super V>	getAdapter(FeatureVector.Factory<V,F> factory) Choose the best adapter for this.
TypeInformation	getInputDataTypeInformation() Input type information.
SimpleTypeInformation<V>	getOutputDataTypeInformation() Output type restriction
void	initialize(SimpleTypeInformation<V> in) Initialize
V	project(V data) Project a single instance.

Methods inherited from class java.lang.Object

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

Field Detail

mindim

private int mindim

Minimum dimensionality required for projection.

factory

private FeatureVector.Factory<V extends FeatureVector<F>,F> factory

Object factory.

dimensionality

private int dimensionality

Output dimensionality.

adapter

protected ArrayAdapter<F,V extends FeatureVector<F>> adapter

Array adapter.

Constructor Detail

FeatureSelection

public FeatureSelection(int[] dims)

Constructor.

Parameters:

dims - Dimensions

Method Detail

initialize

public void initialize(SimpleTypeInformation<V> in)

Description copied from interface: Projection

Initialize

Specified by:

initialize in interface Projection<V extends FeatureVector<F>,V extends FeatureVector<F>>

Parameters:

in - Data type to use for projecting.

project

public V project(V data)

Description copied from interface: Projection

Project a single instance.

Specified by:

project in interface Projection<V extends FeatureVector<F>,V extends FeatureVector<F>>

Parameters:

data - Data to project

Returns:

Projected data

getAdapter

private static <V extends FeatureVector<F>,F> ArrayAdapter<F,? super V> getAdapter(FeatureVector.Factory<V,F> factory)

Choose the best adapter for this.

Type Parameters:

V - Vector type

F - Value type

Parameters:

factory - Object factory, for type inference

Returns:

Adapter

getOutputDataTypeInformation

public SimpleTypeInformation<V> getOutputDataTypeInformation()

Description copied from interface: Projection

Output type restriction

Specified by:

getOutputDataTypeInformation in interface Projection<V extends FeatureVector<F>,V extends FeatureVector<F>>

Returns:

Output type

getInputDataTypeInformation

public TypeInformation getInputDataTypeInformation()

Description copied from interface: Projection

Input type information.

Specified by:

getInputDataTypeInformation in interface Projection<V extends FeatureVector<F>,V extends FeatureVector<F>>

Returns:

Type restriction