org.apache.mahout.math.matrix.linalg
Class EigenvalueDecomposition

java.lang.Object
  org.apache.mahout.math.matrix.linalg.EigenvalueDecomposition

All Implemented Interfaces:

Serializable

Deprecated. until unit tests are in place. Until this time, this class/interface is unsupported.

@Deprecated
public final class EigenvalueDecomposition
extends Object
implements Serializable

See Also:

Serialized Form

Constructor Summary

EigenvalueDecomposition(double[][] v)
Deprecated.

EigenvalueDecomposition(DoubleMatrix2D A)
Deprecated. Constructs and returns a new eigenvalue decomposition object; The decomposed matrices can be retrieved via instance methods of the returned decomposition object.

EigenvalueDecomposition(Matrix A)
Deprecated.

Method Summary

DoubleMatrix2D	getD() Deprecated. Returns the block diagonal eigenvalue matrix, D.
DoubleMatrix1D	getImagEigenvalues() Deprecated. Returns the imaginary parts of the eigenvalues.
DoubleMatrix1D	getRealEigenvalues() Deprecated. Returns the real parts of the eigenvalues.
DoubleMatrix2D	getV() Deprecated. Returns the eigenvector matrix, V
String	toString() Deprecated. Returns a String with (propertyName, propertyValue) pairs.

Methods inherited from class java.lang.Object

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

Constructor Detail

EigenvalueDecomposition

public EigenvalueDecomposition(double[][] v)

Deprecated.

EigenvalueDecomposition

public EigenvalueDecomposition(Matrix A)

Deprecated.

EigenvalueDecomposition

public EigenvalueDecomposition(DoubleMatrix2D A)

Deprecated.

Constructs and returns a new eigenvalue decomposition object; The decomposed matrices can be retrieved via instance methods of the returned decomposition object. Checks for symmetry, then constructs the eigenvalue decomposition.

Parameters:

A - A square matrix.

Throws:

IllegalArgumentException - if A is not square.

Method Detail

getD

public DoubleMatrix2D getD()

Deprecated.

Returns the block diagonal eigenvalue matrix, D.

Returns:

D

getImagEigenvalues

public DoubleMatrix1D getImagEigenvalues()

Deprecated.

Returns the imaginary parts of the eigenvalues.

Returns:

imag(diag(D))

getRealEigenvalues

public DoubleMatrix1D getRealEigenvalues()

Deprecated.

Returns the real parts of the eigenvalues.

Returns:

real(diag(D))

getV

public DoubleMatrix2D getV()

Deprecated.

Returns the eigenvector matrix, V

Returns:

V

toString

public String toString()

Deprecated.

Returns a String with (propertyName, propertyValue) pairs. Useful for debugging or to quickly get the rough picture. For example,

 rank          : 3
 trace         : 0
 

Overrides:

toString in class Object