Package elki.data.projection

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

java.lang.Object

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 java.lang.Object
implements Projection<V,V>

Projection class for number vectors.

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FeatureSelection.Par<V extends FeatureVector<F>,F>	Parameterization class.
private class	FeatureSelection.ProjectedFeatureVectorAdapter	Generic projection function
private class	FeatureSelection.ProjectedNumberFeatureVectorAdapter	Adapter for generating number vectors without reboxing.

Field Summary

Fields

Modifier and Type	Field	Description
private int[]	dims	Dimensions to select.
private FeatureVector.Factory<V,F>	factory	Object factory.
private int	mindim	Minimum dimensionality required for projection.
private java.util.function.Function<V,V>	project	Projection lambda.

Constructor Summary

Constructors

Constructor	Description
FeatureSelection(int[] dims)	Constructor.

Method Summary

Modifier and Type	Method	Description
TypeInformation	getInputDataTypeInformation()	Input type information.
SimpleTypeInformation<V>	getOutputDataTypeInformation()	Output type restriction
void	initialize(SimpleTypeInformation<? extends 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.

dims

private int[] dims

Dimensions to select.

factory

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

Object factory.

project

private java.util.function.Function<V extends FeatureVector<F>,V extends FeatureVector<F>> project

Projection lambda.

Constructor Detail

FeatureSelection

public FeatureSelection(int[] dims)

Constructor.

Parameters:

dims - Dimensions

Method Detail

initialize

public void initialize(SimpleTypeInformation<? extends V> in)

Description copied from interface: Projection

Initialize

Specified by:

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

Parameters:

data - Data to project

Returns:

Projected data

getOutputDataTypeInformation

public SimpleTypeInformation<V> getOutputDataTypeInformation()

Description copied from interface: Projection

Output type restriction

Specified by:

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

Returns:

Type restriction