de.lmu.ifi.dbs.elki.math.linearalgebra.randomprojections

Class AbstractRandomProjectionFamily.MatrixProjection

java.lang.Object

de.lmu.ifi.dbs.elki.math.linearalgebra.randomprojections.AbstractRandomProjectionFamily.MatrixProjection

All Implemented Interfaces:

RandomProjectionFamily.Projection

Enclosing class:

AbstractRandomProjectionFamily

public static class AbstractRandomProjectionFamily.MatrixProjection
extends Object
implements RandomProjectionFamily.Projection

Class to project using a matrix multiplication.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Vector	buf Projection buffer.
(package private) Matrix	matrix Projection matrix.
(package private) double[]	vals Projection buffer values.

Constructor Summary

Constructors

Constructor and Description
MatrixProjection(Matrix matrix) Constructor.

Method Summary

Modifier and Type	Method and Description
int	getOutputDimensionality() Get the output dimensionality.
double[]	project(NumberVector in) Project a single vector.

Methods inherited from class java.lang.Object

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

Field Detail

matrix

Matrix matrix

Projection matrix.

buf

Vector buf

Projection buffer.

vals

double[] vals

Projection buffer values.

Constructor Detail

MatrixProjection

public MatrixProjection(Matrix matrix)

Constructor.

Parameters:

matrix - Projection matrix.

Method Detail

project

public double[] project(NumberVector in)

Description copied from interface: RandomProjectionFamily.Projection

Project a single vector.

Specified by:

project in interface RandomProjectionFamily.Projection

Parameters:

in - Input vector

Returns:

Projected vector

getOutputDimensionality

public int getOutputDimensionality()

Description copied from interface: RandomProjectionFamily.Projection

Get the output dimensionality.

Specified by:

getOutputDimensionality in interface RandomProjectionFamily.Projection

Returns:

Output dimensionality